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185f812c41
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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
1185 lines
33 KiB
C
1185 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2013-2015
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* NVIDIA Corporation <www.nvidia.com>
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*/
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/* Tegra124 Clock control functions */
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#include <common.h>
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#include <init.h>
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#include <log.h>
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#include <asm/io.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/sysctr.h>
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#include <asm/arch/tegra.h>
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#include <asm/arch-tegra/clk_rst.h>
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#include <asm/arch-tegra/timer.h>
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#include <div64.h>
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#include <fdtdec.h>
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#include <linux/delay.h>
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/*
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* Clock types that we can use as a source. The Tegra124 has muxes for the
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* peripheral clocks, and in most cases there are four options for the clock
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* source. This gives us a clock 'type' and exploits what commonality exists
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* in the device.
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*
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* Letters are obvious, except for T which means CLK_M, and S which means the
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* clock derived from 32KHz. Beware that CLK_M (also called OSC in the
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* datasheet) and PLL_M are different things. The former is the basic
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* clock supplied to the SOC from an external oscillator. The latter is the
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* memory clock PLL.
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*
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* See definitions in clock_id in the header file.
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*/
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enum clock_type_id {
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CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */
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CLOCK_TYPE_MCPA, /* and so on */
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CLOCK_TYPE_MCPT,
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CLOCK_TYPE_PCM,
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CLOCK_TYPE_PCMT,
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CLOCK_TYPE_PDCT,
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CLOCK_TYPE_ACPT,
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CLOCK_TYPE_ASPTE,
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CLOCK_TYPE_PMDACD2T,
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CLOCK_TYPE_PCST,
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CLOCK_TYPE_DP,
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CLOCK_TYPE_PC2CC3M,
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CLOCK_TYPE_PC2CC3S_T,
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CLOCK_TYPE_PC2CC3M_T,
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CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */
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CLOCK_TYPE_MC2CC3P_A,
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CLOCK_TYPE_M,
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CLOCK_TYPE_MCPTM2C2C3,
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CLOCK_TYPE_PC2CC3T_S,
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CLOCK_TYPE_AC2CC3P_TS2,
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CLOCK_TYPE_COUNT,
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CLOCK_TYPE_NONE = -1, /* invalid clock type */
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};
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enum {
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CLOCK_MAX_MUX = 8 /* number of source options for each clock */
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};
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/*
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* Clock source mux for each clock type. This just converts our enum into
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* a list of mux sources for use by the code.
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*
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* Note:
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* The extra column in each clock source array is used to store the mask
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* bits in its register for the source.
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*/
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#define CLK(x) CLOCK_ID_ ## x
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static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
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{ CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(CLK_M),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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{ CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC),
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CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_29},
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{ CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO),
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CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE),
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MASK_BITS_31_29},
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{ CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_28},
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/* CLOCK_TYPE_DP */
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{ CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_28},
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/* Additional clock types on Tegra114+ */
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/* CLOCK_TYPE_PC2CC3M */
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{ CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_PC2CC3S_T */
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{ CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(SFROM32KHZ), CLK(NONE), CLK(OSC), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_PC2CC3M_T */
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{ CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */
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{ CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_MC2CC3P_A */
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{ CLK(MEMORY), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(PERIPH), CLK(NONE), CLK(AUDIO), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_M */
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{ CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
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CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
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MASK_BITS_31_30},
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/* CLOCK_TYPE_MCPTM2C2C3 */
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{ CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
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CLK(MEMORY2), CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_PC2CC3T_S */
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{ CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(OSC), CLK(NONE), CLK(SFROM32KHZ), CLK(NONE),
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MASK_BITS_31_29},
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/* CLOCK_TYPE_AC2CC3P_TS2 */
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{ CLK(AUDIO), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
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CLK(PERIPH), CLK(NONE), CLK(OSC), CLK(SRC2),
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MASK_BITS_31_29},
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};
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/*
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* Clock type for each peripheral clock source. We put the name in each
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* record just so it is easy to match things up
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*/
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#define TYPE(name, type) type
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static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
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/* 0x00 */
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TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT),
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TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT),
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TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT),
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TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PC2CC3M),
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TYPE(PERIPHC_PWM, CLOCK_TYPE_PC2CC3S_T),
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TYPE(PERIPHC_05h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SBC2, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_SBC3, CLOCK_TYPE_PC2CC3M_T),
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/* 0x08 */
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TYPE(PERIPHC_08h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_I2C1, CLOCK_TYPE_PC2CC3M_T16),
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TYPE(PERIPHC_I2C5, CLOCK_TYPE_PC2CC3M_T16),
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TYPE(PERIPHC_0bh, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_0ch, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SBC1, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T),
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TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T),
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/* 0x10 */
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TYPE(PERIPHC_10h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_11h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_VI, CLOCK_TYPE_MC2CC3P_A),
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TYPE(PERIPHC_13h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_16h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_17h, CLOCK_TYPE_NONE),
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/* 0x18 */
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TYPE(PERIPHC_18h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_VFIR, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_1Bh, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_1Ch, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_HSI, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_UART1, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_UART2, CLOCK_TYPE_PC2CC3M_T),
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/* 0x20 */
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TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MC2CC3P_A),
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TYPE(PERIPHC_21h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_22h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T),
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TYPE(PERIPHC_24h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_25h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_I2C2, CLOCK_TYPE_PC2CC3M_T16),
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TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPTM2C2C3),
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/* 0x28 */
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TYPE(PERIPHC_UART3, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_29h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A),
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TYPE(PERIPHC_2bh, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_2ch, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SBC4, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_I2C3, CLOCK_TYPE_PC2CC3M_T16),
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TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PC2CC3M_T),
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/* 0x30 */
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TYPE(PERIPHC_UART4, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_UART5, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_VDE, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_OWR, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_NOR, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_CSITE, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT),
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TYPE(PERIPHC_DTV, CLOCK_TYPE_NONE),
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/* 0x38 */
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TYPE(PERIPHC_38h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_39h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_3ah, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_3bh, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_MSENC, CLOCK_TYPE_MC2CC3P_A),
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TYPE(PERIPHC_TSEC, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_3eh, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_OSC, CLOCK_TYPE_NONE),
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/* 0x40 */
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TYPE(PERIPHC_40h, CLOCK_TYPE_NONE), /* start with 0x3b0 */
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TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PC2CC3T_S),
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TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT),
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TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT),
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TYPE(PERIPHC_I2C4, CLOCK_TYPE_PC2CC3M_T16),
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TYPE(PERIPHC_SBC5, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_SBC6, CLOCK_TYPE_PC2CC3M_T),
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/* 0x48 */
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TYPE(PERIPHC_AUDIO, CLOCK_TYPE_AC2CC3P_TS2),
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TYPE(PERIPHC_49h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_DAM0, CLOCK_TYPE_AC2CC3P_TS2),
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TYPE(PERIPHC_DAM1, CLOCK_TYPE_AC2CC3P_TS2),
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TYPE(PERIPHC_DAM2, CLOCK_TYPE_AC2CC3P_TS2),
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TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PC2CC3S_T),
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TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
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/* 0x50 */
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TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
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TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
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TYPE(PERIPHC_52h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PC2CC3S_T),
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TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_55h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_56h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_57h, CLOCK_TYPE_NONE),
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/* 0x58 */
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TYPE(PERIPHC_58h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SOR, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_5ah, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_5bh, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT),
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TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT),
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TYPE(PERIPHC_HDA, CLOCK_TYPE_PC2CC3M_T),
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TYPE(PERIPHC_5fh, CLOCK_TYPE_NONE),
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/* 0x60 */
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TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_XUSB_FS, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_XUSB_SS, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_CILAB, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_CILCD, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_CILE, CLOCK_TYPE_NONE),
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/* 0x68 */
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TYPE(PERIPHC_DSIA_LP, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_DSIB_LP, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_ENTROPY, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_DVFS_REF, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_DVFS_SOC, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_ADX0, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_AMX0, CLOCK_TYPE_NONE),
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/* 0x70 */
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TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_72h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_73h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_74h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_75h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_I2C6, CLOCK_TYPE_PC2CC3M_T16),
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/* 0x78 */
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TYPE(PERIPHC_78h, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_EMC_DLL, CLOCK_TYPE_MCPTM2C2C3),
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TYPE(PERIPHC_HDMI_AUDIO, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_CLK72MHZ, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_ADX1, CLOCK_TYPE_AC2CC3P_TS2),
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TYPE(PERIPHC_AMX1, CLOCK_TYPE_AC2CC3P_TS2),
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TYPE(PERIPHC_VIC, CLOCK_TYPE_NONE),
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TYPE(PERIPHC_7Fh, CLOCK_TYPE_NONE),
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};
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/*
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* This array translates a periph_id to a periphc_internal_id
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*
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* Not present/matched up:
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* uint vi_sensor; _VI_SENSOR_0, 0x1A8
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* SPDIF - which is both 0x08 and 0x0c
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*
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*/
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#define NONE(name) (-1)
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#define OFFSET(name, value) PERIPHC_ ## name
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static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
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/* Low word: 31:0 */
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NONE(CPU),
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NONE(COP),
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NONE(TRIGSYS),
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NONE(ISPB),
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NONE(RESERVED4),
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NONE(TMR),
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PERIPHC_UART1,
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PERIPHC_UART2, /* and vfir 0x68 */
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/* 8 */
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NONE(GPIO),
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PERIPHC_SDMMC2,
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PERIPHC_SPDIF_IN,
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PERIPHC_I2S1,
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PERIPHC_I2C1,
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NONE(RESERVED13),
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PERIPHC_SDMMC1,
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PERIPHC_SDMMC4,
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/* 16 */
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NONE(TCW),
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PERIPHC_PWM,
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PERIPHC_I2S2,
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NONE(RESERVED19),
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PERIPHC_VI,
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NONE(RESERVED21),
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NONE(USBD),
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NONE(ISP),
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/* 24 */
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NONE(RESERVED24),
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NONE(RESERVED25),
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PERIPHC_DISP2,
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PERIPHC_DISP1,
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PERIPHC_HOST1X,
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NONE(VCP),
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PERIPHC_I2S0,
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NONE(CACHE2),
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/* Middle word: 63:32 */
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NONE(MEM),
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NONE(AHBDMA),
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NONE(APBDMA),
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NONE(RESERVED35),
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NONE(RESERVED36),
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NONE(STAT_MON),
|
|
NONE(RESERVED38),
|
|
NONE(FUSE),
|
|
|
|
/* 40 */
|
|
NONE(KFUSE),
|
|
PERIPHC_SBC1, /* SBCx = SPIx */
|
|
PERIPHC_NOR,
|
|
NONE(RESERVED43),
|
|
PERIPHC_SBC2,
|
|
NONE(XIO),
|
|
PERIPHC_SBC3,
|
|
PERIPHC_I2C5,
|
|
|
|
/* 48 */
|
|
NONE(DSI),
|
|
NONE(RESERVED49),
|
|
PERIPHC_HSI,
|
|
PERIPHC_HDMI,
|
|
NONE(CSI),
|
|
NONE(RESERVED53),
|
|
PERIPHC_I2C2,
|
|
PERIPHC_UART3,
|
|
|
|
/* 56 */
|
|
NONE(MIPI_CAL),
|
|
PERIPHC_EMC,
|
|
NONE(USB2),
|
|
NONE(USB3),
|
|
NONE(RESERVED60),
|
|
PERIPHC_VDE,
|
|
NONE(BSEA),
|
|
NONE(BSEV),
|
|
|
|
/* Upper word 95:64 */
|
|
NONE(RESERVED64),
|
|
PERIPHC_UART4,
|
|
PERIPHC_UART5,
|
|
PERIPHC_I2C3,
|
|
PERIPHC_SBC4,
|
|
PERIPHC_SDMMC3,
|
|
NONE(PCIE),
|
|
PERIPHC_OWR,
|
|
|
|
/* 72 */
|
|
NONE(AFI),
|
|
PERIPHC_CSITE,
|
|
NONE(PCIEXCLK),
|
|
NONE(AVPUCQ),
|
|
NONE(LA),
|
|
NONE(TRACECLKIN),
|
|
NONE(SOC_THERM),
|
|
NONE(DTV),
|
|
|
|
/* 80 */
|
|
NONE(RESERVED80),
|
|
PERIPHC_I2CSLOW,
|
|
NONE(DSIB),
|
|
PERIPHC_TSEC,
|
|
NONE(RESERVED84),
|
|
NONE(RESERVED85),
|
|
NONE(RESERVED86),
|
|
NONE(EMUCIF),
|
|
|
|
/* 88 */
|
|
NONE(RESERVED88),
|
|
NONE(XUSB_HOST),
|
|
NONE(RESERVED90),
|
|
PERIPHC_MSENC,
|
|
NONE(RESERVED92),
|
|
NONE(RESERVED93),
|
|
NONE(RESERVED94),
|
|
NONE(XUSB_DEV),
|
|
|
|
/* V word: 31:0 */
|
|
NONE(CPUG),
|
|
NONE(CPULP),
|
|
NONE(V_RESERVED2),
|
|
PERIPHC_MSELECT,
|
|
NONE(V_RESERVED4),
|
|
PERIPHC_I2S3,
|
|
PERIPHC_I2S4,
|
|
PERIPHC_I2C4,
|
|
|
|
/* 104 */
|
|
PERIPHC_SBC5,
|
|
PERIPHC_SBC6,
|
|
PERIPHC_AUDIO,
|
|
NONE(APBIF),
|
|
PERIPHC_DAM0,
|
|
PERIPHC_DAM1,
|
|
PERIPHC_DAM2,
|
|
PERIPHC_HDA2CODEC2X,
|
|
|
|
/* 112 */
|
|
NONE(ATOMICS),
|
|
NONE(V_RESERVED17),
|
|
NONE(V_RESERVED18),
|
|
NONE(V_RESERVED19),
|
|
NONE(V_RESERVED20),
|
|
NONE(V_RESERVED21),
|
|
NONE(V_RESERVED22),
|
|
PERIPHC_ACTMON,
|
|
|
|
/* 120 */
|
|
PERIPHC_EXTPERIPH1,
|
|
NONE(EXTPERIPH2),
|
|
NONE(EXTPERIPH3),
|
|
NONE(OOB),
|
|
PERIPHC_SATA,
|
|
PERIPHC_HDA,
|
|
NONE(TZRAM),
|
|
NONE(SE),
|
|
|
|
/* W word: 31:0 */
|
|
NONE(HDA2HDMICODEC),
|
|
NONE(SATACOLD),
|
|
NONE(W_RESERVED2),
|
|
NONE(W_RESERVED3),
|
|
NONE(W_RESERVED4),
|
|
NONE(W_RESERVED5),
|
|
NONE(W_RESERVED6),
|
|
NONE(W_RESERVED7),
|
|
|
|
/* 136 */
|
|
NONE(CEC),
|
|
NONE(W_RESERVED9),
|
|
NONE(W_RESERVED10),
|
|
NONE(W_RESERVED11),
|
|
NONE(W_RESERVED12),
|
|
NONE(W_RESERVED13),
|
|
NONE(XUSB_PADCTL),
|
|
NONE(W_RESERVED15),
|
|
|
|
/* 144 */
|
|
NONE(W_RESERVED16),
|
|
NONE(W_RESERVED17),
|
|
NONE(W_RESERVED18),
|
|
NONE(W_RESERVED19),
|
|
NONE(W_RESERVED20),
|
|
NONE(ENTROPY),
|
|
NONE(DDS),
|
|
NONE(W_RESERVED23),
|
|
|
|
/* 152 */
|
|
NONE(DP2),
|
|
NONE(AMX0),
|
|
NONE(ADX0),
|
|
NONE(DVFS),
|
|
NONE(XUSB_SS),
|
|
NONE(W_RESERVED29),
|
|
NONE(W_RESERVED30),
|
|
NONE(W_RESERVED31),
|
|
|
|
/* X word: 31:0 */
|
|
NONE(SPARE),
|
|
NONE(X_RESERVED1),
|
|
NONE(X_RESERVED2),
|
|
NONE(X_RESERVED3),
|
|
NONE(CAM_MCLK),
|
|
NONE(CAM_MCLK2),
|
|
PERIPHC_I2C6,
|
|
NONE(X_RESERVED7),
|
|
|
|
/* 168 */
|
|
NONE(X_RESERVED8),
|
|
NONE(X_RESERVED9),
|
|
NONE(X_RESERVED10),
|
|
NONE(VIM2_CLK),
|
|
NONE(X_RESERVED12),
|
|
NONE(X_RESERVED13),
|
|
NONE(EMC_DLL),
|
|
NONE(X_RESERVED15),
|
|
|
|
/* 176 */
|
|
NONE(HDMI_AUDIO),
|
|
NONE(CLK72MHZ),
|
|
NONE(VIC),
|
|
NONE(X_RESERVED19),
|
|
NONE(ADX1),
|
|
NONE(DPAUX),
|
|
PERIPHC_SOR,
|
|
NONE(X_RESERVED23),
|
|
|
|
/* 184 */
|
|
NONE(GPU),
|
|
NONE(AMX1),
|
|
NONE(X_RESERVED26),
|
|
NONE(X_RESERVED27),
|
|
NONE(X_RESERVED28),
|
|
NONE(X_RESERVED29),
|
|
NONE(X_RESERVED30),
|
|
NONE(X_RESERVED31),
|
|
};
|
|
|
|
/*
|
|
* PLL divider shift/mask tables for all PLL IDs.
|
|
*/
|
|
struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = {
|
|
/*
|
|
* T124: same as T114, some deviations from T2x/T30. Adds PLLDP.
|
|
* NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLX, etc.)
|
|
* If lock_ena or lock_det are >31, they're not used in that PLL.
|
|
*/
|
|
|
|
{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x0F,
|
|
.lock_ena = 24, .lock_det = 27, .kcp_shift = 28, .kcp_mask = 3, .kvco_shift = 27, .kvco_mask = 1 }, /* PLLC */
|
|
{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0,
|
|
.lock_ena = 0, .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLM */
|
|
{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
|
|
.lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLP */
|
|
{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
|
|
.lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLA */
|
|
{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x01,
|
|
.lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLU */
|
|
{ .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
|
|
.lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLD */
|
|
{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x0F,
|
|
.lock_ena = 18, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 }, /* PLLX */
|
|
{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0,
|
|
.lock_ena = 9, .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLE */
|
|
{ .m_shift = 0, .m_mask = 0x0F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
|
|
.lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLS (RESERVED) */
|
|
{ .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0xF,
|
|
.lock_ena = 30, .lock_det = 27, .kcp_shift = 25, .kcp_mask = 3, .kvco_shift = 24, .kvco_mask = 1 }, /* PLLDP */
|
|
};
|
|
|
|
/*
|
|
* Get the oscillator frequency, from the corresponding hardware configuration
|
|
* field. Note that Tegra30+ support 3 new higher freqs, but we map back
|
|
* to the old T20 freqs. Support for the higher oscillators is TBD.
|
|
*/
|
|
enum clock_osc_freq clock_get_osc_freq(void)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 reg;
|
|
|
|
reg = readl(&clkrst->crc_osc_ctrl);
|
|
reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
|
|
|
|
if (reg & 1) /* one of the newer freqs */
|
|
printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg);
|
|
|
|
return reg >> 2; /* Map to most common (T20) freqs */
|
|
}
|
|
|
|
/* Returns a pointer to the clock source register for a peripheral */
|
|
u32 *get_periph_source_reg(enum periph_id periph_id)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
enum periphc_internal_id internal_id;
|
|
|
|
/* Coresight is a special case */
|
|
if (periph_id == PERIPH_ID_CSI)
|
|
return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
|
|
|
|
assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
|
|
internal_id = periph_id_to_internal_id[periph_id];
|
|
assert(internal_id != -1);
|
|
if (internal_id >= PERIPHC_X_FIRST) {
|
|
internal_id -= PERIPHC_X_FIRST;
|
|
return &clkrst->crc_clk_src_x[internal_id];
|
|
} else if (internal_id >= PERIPHC_VW_FIRST) {
|
|
internal_id -= PERIPHC_VW_FIRST;
|
|
return &clkrst->crc_clk_src_vw[internal_id];
|
|
} else {
|
|
return &clkrst->crc_clk_src[internal_id];
|
|
}
|
|
}
|
|
|
|
int get_periph_clock_info(enum periph_id periph_id, int *mux_bits,
|
|
int *divider_bits, int *type)
|
|
{
|
|
enum periphc_internal_id internal_id;
|
|
|
|
if (!clock_periph_id_isvalid(periph_id))
|
|
return -1;
|
|
|
|
internal_id = periph_id_to_internal_id[periph_id];
|
|
if (!periphc_internal_id_isvalid(internal_id))
|
|
return -1;
|
|
|
|
*type = clock_periph_type[internal_id];
|
|
if (!clock_type_id_isvalid(*type))
|
|
return -1;
|
|
|
|
*mux_bits = clock_source[*type][CLOCK_MAX_MUX];
|
|
|
|
if (*type == CLOCK_TYPE_PC2CC3M_T16)
|
|
*divider_bits = 16;
|
|
else
|
|
*divider_bits = 8;
|
|
|
|
return 0;
|
|
}
|
|
|
|
enum clock_id get_periph_clock_id(enum periph_id periph_id, int source)
|
|
{
|
|
enum periphc_internal_id internal_id;
|
|
int type;
|
|
|
|
if (!clock_periph_id_isvalid(periph_id))
|
|
return CLOCK_ID_NONE;
|
|
|
|
internal_id = periph_id_to_internal_id[periph_id];
|
|
if (!periphc_internal_id_isvalid(internal_id))
|
|
return CLOCK_ID_NONE;
|
|
|
|
type = clock_periph_type[internal_id];
|
|
if (!clock_type_id_isvalid(type))
|
|
return CLOCK_ID_NONE;
|
|
|
|
return clock_source[type][source];
|
|
}
|
|
|
|
/**
|
|
* Given a peripheral ID and the required source clock, this returns which
|
|
* value should be programmed into the source mux for that peripheral.
|
|
*
|
|
* There is special code here to handle the one source type with 5 sources.
|
|
*
|
|
* @param periph_id peripheral to start
|
|
* @param source PLL id of required parent clock
|
|
* @param mux_bits Set to number of bits in mux register: 2 or 4
|
|
* @param divider_bits Set to number of divider bits (8 or 16)
|
|
* Return: mux value (0-4, or -1 if not found)
|
|
*/
|
|
int get_periph_clock_source(enum periph_id periph_id,
|
|
enum clock_id parent, int *mux_bits, int *divider_bits)
|
|
{
|
|
enum clock_type_id type;
|
|
int mux, err;
|
|
|
|
err = get_periph_clock_info(periph_id, mux_bits, divider_bits, &type);
|
|
assert(!err);
|
|
|
|
for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
|
|
if (clock_source[type][mux] == parent)
|
|
return mux;
|
|
|
|
/* if we get here, either us or the caller has made a mistake */
|
|
printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
|
|
parent);
|
|
return -1;
|
|
}
|
|
|
|
void clock_set_enable(enum periph_id periph_id, int enable)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 *clk;
|
|
u32 reg;
|
|
|
|
/* Enable/disable the clock to this peripheral */
|
|
assert(clock_periph_id_isvalid(periph_id));
|
|
if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
|
|
clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
|
|
else if ((int)periph_id < PERIPH_ID_X_FIRST)
|
|
clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
|
|
else
|
|
clk = &clkrst->crc_clk_out_enb_x;
|
|
reg = readl(clk);
|
|
if (enable)
|
|
reg |= PERIPH_MASK(periph_id);
|
|
else
|
|
reg &= ~PERIPH_MASK(periph_id);
|
|
writel(reg, clk);
|
|
}
|
|
|
|
void reset_set_enable(enum periph_id periph_id, int enable)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 *reset;
|
|
u32 reg;
|
|
|
|
/* Enable/disable reset to the peripheral */
|
|
assert(clock_periph_id_isvalid(periph_id));
|
|
if (periph_id < PERIPH_ID_VW_FIRST)
|
|
reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
|
|
else if ((int)periph_id < PERIPH_ID_X_FIRST)
|
|
reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
|
|
else
|
|
reset = &clkrst->crc_rst_devices_x;
|
|
reg = readl(reset);
|
|
if (enable)
|
|
reg |= PERIPH_MASK(periph_id);
|
|
else
|
|
reg &= ~PERIPH_MASK(periph_id);
|
|
writel(reg, reset);
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL)
|
|
/*
|
|
* Convert a device tree clock ID to our peripheral ID. They are mostly
|
|
* the same but we are very cautious so we check that a valid clock ID is
|
|
* provided.
|
|
*
|
|
* @param clk_id Clock ID according to tegra124 device tree binding
|
|
* Return: peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
|
|
*/
|
|
enum periph_id clk_id_to_periph_id(int clk_id)
|
|
{
|
|
if (clk_id > PERIPH_ID_COUNT)
|
|
return PERIPH_ID_NONE;
|
|
|
|
switch (clk_id) {
|
|
case PERIPH_ID_RESERVED4:
|
|
case PERIPH_ID_RESERVED25:
|
|
case PERIPH_ID_RESERVED35:
|
|
case PERIPH_ID_RESERVED36:
|
|
case PERIPH_ID_RESERVED38:
|
|
case PERIPH_ID_RESERVED43:
|
|
case PERIPH_ID_RESERVED49:
|
|
case PERIPH_ID_RESERVED53:
|
|
case PERIPH_ID_RESERVED64:
|
|
case PERIPH_ID_RESERVED84:
|
|
case PERIPH_ID_RESERVED85:
|
|
case PERIPH_ID_RESERVED86:
|
|
case PERIPH_ID_RESERVED88:
|
|
case PERIPH_ID_RESERVED90:
|
|
case PERIPH_ID_RESERVED92:
|
|
case PERIPH_ID_RESERVED93:
|
|
case PERIPH_ID_RESERVED94:
|
|
case PERIPH_ID_V_RESERVED2:
|
|
case PERIPH_ID_V_RESERVED4:
|
|
case PERIPH_ID_V_RESERVED17:
|
|
case PERIPH_ID_V_RESERVED18:
|
|
case PERIPH_ID_V_RESERVED19:
|
|
case PERIPH_ID_V_RESERVED20:
|
|
case PERIPH_ID_V_RESERVED21:
|
|
case PERIPH_ID_V_RESERVED22:
|
|
case PERIPH_ID_W_RESERVED2:
|
|
case PERIPH_ID_W_RESERVED3:
|
|
case PERIPH_ID_W_RESERVED4:
|
|
case PERIPH_ID_W_RESERVED5:
|
|
case PERIPH_ID_W_RESERVED6:
|
|
case PERIPH_ID_W_RESERVED7:
|
|
case PERIPH_ID_W_RESERVED9:
|
|
case PERIPH_ID_W_RESERVED10:
|
|
case PERIPH_ID_W_RESERVED11:
|
|
case PERIPH_ID_W_RESERVED12:
|
|
case PERIPH_ID_W_RESERVED13:
|
|
case PERIPH_ID_W_RESERVED15:
|
|
case PERIPH_ID_W_RESERVED16:
|
|
case PERIPH_ID_W_RESERVED17:
|
|
case PERIPH_ID_W_RESERVED18:
|
|
case PERIPH_ID_W_RESERVED19:
|
|
case PERIPH_ID_W_RESERVED20:
|
|
case PERIPH_ID_W_RESERVED23:
|
|
case PERIPH_ID_W_RESERVED29:
|
|
case PERIPH_ID_W_RESERVED30:
|
|
case PERIPH_ID_W_RESERVED31:
|
|
return PERIPH_ID_NONE;
|
|
default:
|
|
return clk_id;
|
|
}
|
|
}
|
|
#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
|
|
|
|
void clock_early_init(void)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
struct clk_pll_info *pllinfo;
|
|
u32 data;
|
|
|
|
tegra30_set_up_pllp();
|
|
|
|
/* clear IDDQ before accessing any other PLLC registers */
|
|
pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL];
|
|
clrbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, PLLC_IDDQ);
|
|
udelay(2);
|
|
|
|
/*
|
|
* PLLC output frequency set to 600Mhz
|
|
* PLLD output frequency set to 925Mhz
|
|
*/
|
|
switch (clock_get_osc_freq()) {
|
|
case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
|
|
clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
|
|
clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
|
|
break;
|
|
|
|
case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
|
|
clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
|
|
clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
|
|
break;
|
|
|
|
case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
|
|
clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
|
|
clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
|
|
break;
|
|
case CLOCK_OSC_FREQ_19_2:
|
|
default:
|
|
/*
|
|
* These are not supported. It is too early to print a
|
|
* message and the UART likely won't work anyway due to the
|
|
* oscillator being wrong.
|
|
*/
|
|
break;
|
|
}
|
|
|
|
/* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */
|
|
writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]);
|
|
|
|
/* PLLC_MISC: Set LOCK_ENABLE */
|
|
pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL];
|
|
setbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, (1 << pllinfo->lock_ena));
|
|
udelay(2);
|
|
|
|
/* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1, and enable lock */
|
|
pllinfo = &tegra_pll_info_table[CLOCK_ID_DISPLAY];
|
|
data = (12 << pllinfo->kcp_shift) | (1 << pllinfo->kvco_shift);
|
|
data |= (1 << PLLD_CLKENABLE) | (1 << pllinfo->lock_ena);
|
|
writel(data, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
|
|
udelay(2);
|
|
}
|
|
|
|
/*
|
|
* clock_early_init_done - Check if clock_early_init() has been called
|
|
*
|
|
* Check a register that we set up to see if clock_early_init() has already
|
|
* been called.
|
|
*
|
|
* Return: true if clock_early_init() was called, false if not
|
|
*/
|
|
bool clock_early_init_done(void)
|
|
{
|
|
struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 val;
|
|
|
|
val = readl(&clkrst->crc_sclk_brst_pol);
|
|
|
|
return val == 0x20002222;
|
|
}
|
|
|
|
void arch_timer_init(void)
|
|
{
|
|
struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
|
|
u32 freq, val;
|
|
|
|
freq = clock_get_rate(CLOCK_ID_CLK_M);
|
|
debug("%s: clk_m freq is %dHz [0x%08X]\n", __func__, freq, freq);
|
|
|
|
/* ARM CNTFRQ */
|
|
asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq));
|
|
|
|
/* Only Tegra114+ has the System Counter regs */
|
|
debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
|
|
writel(freq, &sysctr->cntfid0);
|
|
|
|
val = readl(&sysctr->cntcr);
|
|
val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
|
|
writel(val, &sysctr->cntcr);
|
|
debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
|
|
}
|
|
|
|
#define PLLE_SS_CNTL 0x68
|
|
#define PLLE_SS_CNTL_SSCINCINTR(x) (((x) & 0x3f) << 24)
|
|
#define PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16)
|
|
#define PLLE_SS_CNTL_SSCINVERT (1 << 15)
|
|
#define PLLE_SS_CNTL_SSCCENTER (1 << 14)
|
|
#define PLLE_SS_CNTL_SSCBYP (1 << 12)
|
|
#define PLLE_SS_CNTL_INTERP_RESET (1 << 11)
|
|
#define PLLE_SS_CNTL_BYPASS_SS (1 << 10)
|
|
#define PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0)
|
|
|
|
#define PLLE_BASE 0x0e8
|
|
#define PLLE_BASE_ENABLE (1 << 30)
|
|
#define PLLE_BASE_LOCK_OVERRIDE (1 << 29)
|
|
#define PLLE_BASE_PLDIV_CML(x) (((x) & 0xf) << 24)
|
|
#define PLLE_BASE_NDIV(x) (((x) & 0xff) << 8)
|
|
#define PLLE_BASE_MDIV(x) (((x) & 0xff) << 0)
|
|
|
|
#define PLLE_MISC 0x0ec
|
|
#define PLLE_MISC_IDDQ_SWCTL (1 << 14)
|
|
#define PLLE_MISC_IDDQ_OVERRIDE (1 << 13)
|
|
#define PLLE_MISC_LOCK_ENABLE (1 << 9)
|
|
#define PLLE_MISC_PTS (1 << 8)
|
|
#define PLLE_MISC_VREG_BG_CTRL(x) (((x) & 0x3) << 4)
|
|
#define PLLE_MISC_VREG_CTRL(x) (((x) & 0x3) << 2)
|
|
|
|
#define PLLE_AUX 0x48c
|
|
#define PLLE_AUX_SEQ_ENABLE (1 << 24)
|
|
#define PLLE_AUX_ENABLE_SWCTL (1 << 4)
|
|
|
|
int tegra_plle_enable(void)
|
|
{
|
|
unsigned int m = 1, n = 200, cpcon = 13;
|
|
u32 value;
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
|
|
value &= ~PLLE_BASE_LOCK_OVERRIDE;
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX);
|
|
value |= PLLE_AUX_ENABLE_SWCTL;
|
|
value &= ~PLLE_AUX_SEQ_ENABLE;
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
|
|
|
|
udelay(1);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
|
|
value |= PLLE_MISC_IDDQ_SWCTL;
|
|
value &= ~PLLE_MISC_IDDQ_OVERRIDE;
|
|
value |= PLLE_MISC_LOCK_ENABLE;
|
|
value |= PLLE_MISC_PTS;
|
|
value |= PLLE_MISC_VREG_BG_CTRL(3);
|
|
value |= PLLE_MISC_VREG_CTRL(2);
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
|
|
|
|
udelay(5);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
value |= PLLE_SS_CNTL_SSCBYP | PLLE_SS_CNTL_INTERP_RESET |
|
|
PLLE_SS_CNTL_BYPASS_SS;
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
|
|
value &= ~PLLE_BASE_PLDIV_CML(0xf);
|
|
value &= ~PLLE_BASE_NDIV(0xff);
|
|
value &= ~PLLE_BASE_MDIV(0xff);
|
|
value |= PLLE_BASE_PLDIV_CML(cpcon);
|
|
value |= PLLE_BASE_NDIV(n);
|
|
value |= PLLE_BASE_MDIV(m);
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
|
|
|
|
udelay(1);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
|
|
value |= PLLE_BASE_ENABLE;
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
|
|
|
|
/* wait for lock */
|
|
udelay(300);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
value &= ~PLLE_SS_CNTL_SSCINVERT;
|
|
value &= ~PLLE_SS_CNTL_SSCCENTER;
|
|
|
|
value &= ~PLLE_SS_CNTL_SSCINCINTR(0x3f);
|
|
value &= ~PLLE_SS_CNTL_SSCINC(0xff);
|
|
value &= ~PLLE_SS_CNTL_SSCMAX(0x1ff);
|
|
|
|
value |= PLLE_SS_CNTL_SSCINCINTR(0x20);
|
|
value |= PLLE_SS_CNTL_SSCINC(0x01);
|
|
value |= PLLE_SS_CNTL_SSCMAX(0x25);
|
|
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
value &= ~PLLE_SS_CNTL_SSCBYP;
|
|
value &= ~PLLE_SS_CNTL_BYPASS_SS;
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
|
|
udelay(1);
|
|
|
|
value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
value &= ~PLLE_SS_CNTL_INTERP_RESET;
|
|
writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
|
|
|
|
udelay(1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void clock_sor_enable_edp_clock(void)
|
|
{
|
|
u32 *reg;
|
|
|
|
/* uses PLLP, has a non-standard bit layout. */
|
|
reg = get_periph_source_reg(PERIPH_ID_SOR0);
|
|
setbits_le32(reg, SOR0_CLK_SEL0);
|
|
}
|
|
|
|
u32 clock_set_display_rate(u32 frequency)
|
|
{
|
|
/**
|
|
* plld (fo) = vco >> p, where 500MHz < vco < 1000MHz
|
|
* = (cf * n) >> p, where 1MHz < cf < 6MHz
|
|
* = ((ref / m) * n) >> p
|
|
*
|
|
* Iterate the possible values of p (3 bits, 2^7) to find out a minimum
|
|
* safe vco, then find best (m, n). since m has only 5 bits, we can
|
|
* iterate all possible values. Note Tegra 124 supports 11 bits for n,
|
|
* but our pll_fields has only 10 bits for n.
|
|
*
|
|
* Note values undershoot or overshoot target output frequency may not
|
|
* work if the values are not in "safe" range by panel specification.
|
|
*/
|
|
u32 ref = clock_get_rate(CLOCK_ID_OSC);
|
|
u32 divm, divn, divp, cpcon;
|
|
u32 cf, vco, rounded_rate = frequency;
|
|
u32 diff, best_diff, best_m = 0, best_n = 0, best_p;
|
|
const u32 max_m = 1 << 5, max_n = 1 << 10, max_p = 1 << 3,
|
|
mhz = 1000 * 1000, min_vco = 500 * mhz, max_vco = 1000 * mhz,
|
|
min_cf = 1 * mhz, max_cf = 6 * mhz;
|
|
int mux_bits, divider_bits, source;
|
|
|
|
for (divp = 0, vco = frequency; vco < min_vco && divp < max_p; divp++)
|
|
vco <<= 1;
|
|
|
|
if (vco < min_vco || vco > max_vco) {
|
|
printf("%s: Cannot find out a supported VCO for Frequency (%u)\n",
|
|
__func__, frequency);
|
|
return 0;
|
|
}
|
|
|
|
best_p = divp;
|
|
best_diff = vco;
|
|
|
|
for (divm = 1; divm < max_m && best_diff; divm++) {
|
|
cf = ref / divm;
|
|
if (cf < min_cf)
|
|
break;
|
|
if (cf > max_cf)
|
|
continue;
|
|
|
|
divn = vco / cf;
|
|
if (divn >= max_n)
|
|
continue;
|
|
|
|
diff = vco - divn * cf;
|
|
if (divn + 1 < max_n && diff > cf / 2) {
|
|
divn++;
|
|
diff = cf - diff;
|
|
}
|
|
|
|
if (diff >= best_diff)
|
|
continue;
|
|
|
|
best_diff = diff;
|
|
best_m = divm;
|
|
best_n = divn;
|
|
}
|
|
|
|
if (best_n < 50)
|
|
cpcon = 2;
|
|
else if (best_n < 300)
|
|
cpcon = 3;
|
|
else if (best_n < 600)
|
|
cpcon = 8;
|
|
else
|
|
cpcon = 12;
|
|
|
|
if (best_diff) {
|
|
printf("%s: Failed to match output frequency %u, best difference is %u\n",
|
|
__func__, frequency, best_diff);
|
|
rounded_rate = (ref / best_m * best_n) >> best_p;
|
|
}
|
|
|
|
debug("%s: PLLD=%u ref=%u, m/n/p/cpcon=%u/%u/%u/%u\n",
|
|
__func__, rounded_rate, ref, best_m, best_n, best_p, cpcon);
|
|
|
|
source = get_periph_clock_source(PERIPH_ID_DISP1, CLOCK_ID_DISPLAY,
|
|
&mux_bits, ÷r_bits);
|
|
clock_ll_set_source_bits(PERIPH_ID_DISP1, mux_bits, source);
|
|
clock_set_rate(CLOCK_ID_DISPLAY, best_n, best_m, best_p, cpcon);
|
|
|
|
return rounded_rate;
|
|
}
|
|
|
|
void clock_set_up_plldp(void)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
u32 value;
|
|
|
|
value = PLLDP_SS_CFG_UNDOCUMENTED | PLLDP_SS_CFG_DITHER;
|
|
writel(value | PLLDP_SS_CFG_CLAMP, &clkrst->crc_plldp_ss_cfg);
|
|
clock_start_pll(CLOCK_ID_DP, 1, 90, 3, 0, 0);
|
|
writel(value, &clkrst->crc_plldp_ss_cfg);
|
|
}
|
|
|
|
struct clk_pll_simple *clock_get_simple_pll(enum clock_id clkid)
|
|
{
|
|
struct clk_rst_ctlr *clkrst =
|
|
(struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
|
|
|
|
if (clkid == CLOCK_ID_DP)
|
|
return &clkrst->plldp;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct periph_clk_init periph_clk_init_table[] = {
|
|
{ PERIPH_ID_SBC1, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SBC2, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SBC3, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SBC4, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SBC5, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SBC6, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_HOST1X, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_DISP1, CLOCK_ID_CGENERAL },
|
|
{ PERIPH_ID_SDMMC1, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SDMMC2, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SDMMC3, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_SDMMC4, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_PWM, CLOCK_ID_SFROM32KHZ },
|
|
{ PERIPH_ID_I2C1, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_I2C2, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_I2C3, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_I2C4, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_I2C5, CLOCK_ID_PERIPH },
|
|
{ PERIPH_ID_I2C6, CLOCK_ID_PERIPH },
|
|
{ -1, },
|
|
};
|