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smaeul-u-boot/arch/arm/cpu/armv7/omap5/clocks.c
SRICHARAN R 5e9cd44ca0 ARM: OMAP4/5: Move USB clocks to essential group. 
USB clocks will be required for fastboot, tftp
related functionalities. Move these clocks to
essential group inorder to have the functionality
working when non-essential clocks are not enabled.

Signed-off-by: R Sricharan <r.sricharan@ti.com>
2012-07-07 14:07:36 +02:00

495 lines
16 KiB
C
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/*
*
* Clock initialization for OMAP5
*
* (C) Copyright 2010
* Texas Instruments, <www.ti.com>
*
* Aneesh V <aneesh@ti.com>
* Sricharan R <r.sricharan@ti.com>
*
* Based on previous work by:
* Santosh Shilimkar <santosh.shilimkar@ti.com>
* Rajendra Nayak <rnayak@ti.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/omap_common.h>
#include <asm/arch/clocks.h>
#include <asm/arch/sys_proto.h>
#include <asm/utils.h>
#include <asm/omap_gpio.h>
#ifndef CONFIG_SPL_BUILD
/*
* printing to console doesn't work unless
* this code is executed from SPL
*/
#define printf(fmt, args...)
#define puts(s)
#endif
struct omap5_prcm_regs *const prcm = (struct omap5_prcm_regs *)0x4A004100;
const u32 sys_clk_array[8] = {
12000000, /* 12 MHz */
0, /* NA */
16800000, /* 16.8 MHz */
19200000, /* 19.2 MHz */
26000000, /* 26 MHz */
0, /* NA */
38400000, /* 38.4 MHz */
};
static const struct dpll_params mpu_dpll_params_1_5ghz[NUM_SYS_CLKS] = {
{125, 0, 1, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{625, 6, 1, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{625, 7, 1, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{750, 12, 1, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{625, 15, 1, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params mpu_dpll_params_2ghz[NUM_SYS_CLKS] = {
{500, 2, 1, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{2024, 16, 1, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{625, 5, 1, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{1000, 12, 1, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{625, 11, 1, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params mpu_dpll_params_1100mhz[NUM_SYS_CLKS] = {
{275, 2, 1, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{1375, 20, 1, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{1375, 23, 1, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{550, 12, 1, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{1375, 47, 1, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params mpu_dpll_params_800mhz[NUM_SYS_CLKS] = {
{200, 2, 1, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{1000, 20, 1, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{375, 8, 1, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{400, 12, 1, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{375, 17, 1, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params mpu_dpll_params_400mhz[NUM_SYS_CLKS] = {
{200, 2, 2, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{1000, 20, 2, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{375, 8, 2, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{400, 12, 2, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{375, 17, 2, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params mpu_dpll_params_550mhz[NUM_SYS_CLKS] = {
{275, 2, 2, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{1375, 20, 2, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{1375, 23, 2, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{550, 12, 2, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{1375, 47, 2, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params
core_dpll_params_2128mhz_ddr532[NUM_SYS_CLKS] = {
{266, 2, 2, 5, 8, 4, 62, 5, 5, 7}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{570, 8, 2, 5, 8, 4, 62, 5, 5, 7}, /* 16.8 MHz */
{665, 11, 2, 5, 8, 4, 62, 5, 5, 7}, /* 19.2 MHz */
{532, 12, 2, 5, 8, 4, 62, 5, 5, 7}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{665, 23, 2, 5, 8, 4, 62, 5, 5, 7} /* 38.4 MHz */
};
static const struct dpll_params
core_dpll_params_2128mhz_ddr266[NUM_SYS_CLKS] = {
{266, 2, 4, 5, 8, 8, 62, 10, 10, 14}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{570, 8, 4, 5, 8, 8, 62, 10, 10, 14}, /* 16.8 MHz */
{665, 11, 4, 5, 8, 8, 62, 10, 10, 14}, /* 19.2 MHz */
{532, 12, 4, 8, 8, 8, 62, 10, 10, 14}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{665, 23, 4, 8, 8, 8, 62, 10, 10, 14} /* 38.4 MHz */
};
static const struct dpll_params per_dpll_params_768mhz[NUM_SYS_CLKS] = {
{32, 0, 4, 3, 6, 4, -1, 2, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{160, 6, 4, 3, 6, 4, -1, 2, -1, -1}, /* 16.8 MHz */
{20, 0, 4, 3, 6, 4, -1, 2, -1, -1}, /* 19.2 MHz */
{192, 12, 4, 3, 6, 4, -1, 2, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{10, 0, 4, 3, 6, 4, -1, 2, -1, -1} /* 38.4 MHz */
};
static const struct dpll_params iva_dpll_params_2330mhz[NUM_SYS_CLKS] = {
{1165, 11, -1, -1, 5, 6, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{2011, 28, -1, -1, 5, 6, -1, -1, -1, -1}, /* 16.8 MHz */
{1881, 30, -1, -1, 5, 6, -1, -1, -1, -1}, /* 19.2 MHz */
{1165, 25, -1, -1, 5, 6, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{1972, 64, -1, -1, 5, 6, -1, -1, -1, -1} /* 38.4 MHz */
};
/* ABE M & N values with sys_clk as source */
static const struct dpll_params
abe_dpll_params_sysclk_196608khz[NUM_SYS_CLKS] = {
{49, 5, 1, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{35, 5, 1, 1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{46, 8, 1, 1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{34, 8, 1, 1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{64, 24, 1, 1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
/* ABE M & N values with 32K clock as source */
static const struct dpll_params abe_dpll_params_32k_196608khz = {
750, 0, 1, 1, -1, -1, -1, -1, -1, -1
};
static const struct dpll_params usb_dpll_params_1920mhz[NUM_SYS_CLKS] = {
{400, 4, 2, -1, -1, -1, -1, -1, -1, -1}, /* 12 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 13 MHz */
{400, 6, 2, -1, -1, -1, -1, -1, -1, -1}, /* 16.8 MHz */
{400, 7, 2, -1, -1, -1, -1, -1, -1, -1}, /* 19.2 MHz */
{480, 12, 2, -1, -1, -1, -1, -1, -1, -1}, /* 26 MHz */
{-1, -1, -1, -1, -1, -1, -1, -1, -1, -1}, /* 27 MHz */
{400, 15, 2, -1, -1, -1, -1, -1, -1, -1} /* 38.4 MHz */
};
void setup_post_dividers(u32 *const base, const struct dpll_params *params)
{
struct dpll_regs *const dpll_regs = (struct dpll_regs *)base;
/* Setup post-dividers */
if (params->m2 >= 0)
writel(params->m2, &dpll_regs->cm_div_m2_dpll);
if (params->m3 >= 0)
writel(params->m3, &dpll_regs->cm_div_m3_dpll);
if (params->h11 >= 0)
writel(params->h11, &dpll_regs->cm_div_h11_dpll);
if (params->h12 >= 0)
writel(params->h12, &dpll_regs->cm_div_h12_dpll);
if (params->h13 >= 0)
writel(params->h13, &dpll_regs->cm_div_h13_dpll);
if (params->h14 >= 0)
writel(params->h14, &dpll_regs->cm_div_h14_dpll);
if (params->h22 >= 0)
writel(params->h22, &dpll_regs->cm_div_h22_dpll);
if (params->h23 >= 0)
writel(params->h23, &dpll_regs->cm_div_h23_dpll);
}
const struct dpll_params *get_mpu_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &mpu_dpll_params_800mhz[sysclk_ind];
}
const struct dpll_params *get_core_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
/* Configuring the DDR to be at 532mhz */
return &core_dpll_params_2128mhz_ddr532[sysclk_ind];
}
const struct dpll_params *get_per_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &per_dpll_params_768mhz[sysclk_ind];
}
const struct dpll_params *get_iva_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &iva_dpll_params_2330mhz[sysclk_ind];
}
const struct dpll_params *get_usb_dpll_params(void)
{
u32 sysclk_ind = get_sys_clk_index();
return &usb_dpll_params_1920mhz[sysclk_ind];
}
const struct dpll_params *get_abe_dpll_params(void)
{
#ifdef CONFIG_SYS_OMAP_ABE_SYSCK
u32 sysclk_ind = get_sys_clk_index();
return &abe_dpll_params_sysclk_196608khz[sysclk_ind];
#else
return &abe_dpll_params_32k_196608khz;
#endif
}
/*
* Setup the voltages for vdd_mpu, vdd_core, and vdd_iva
* We set the maximum voltages allowed here because Smart-Reflex is not
* enabled in bootloader. Voltage initialization in the kernel will set
* these to the nominal values after enabling Smart-Reflex
*/
void scale_vcores(void)
{
u32 volt_core, volt_mpu, volt_mm;
omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ);
/* Palmas settings */
if (omap_revision() != OMAP5432_ES1_0) {
volt_core = VDD_CORE;
volt_mpu = VDD_MPU;
volt_mm = VDD_MM;
} else {
volt_core = VDD_CORE_5432;
volt_mpu = VDD_MPU_5432;
volt_mm = VDD_MM_5432;
}
do_scale_vcore(SMPS_REG_ADDR_8_CORE, volt_core);
do_scale_vcore(SMPS_REG_ADDR_12_MPU, volt_mpu);
do_scale_vcore(SMPS_REG_ADDR_45_IVA, volt_mm);
if (omap_revision() == OMAP5432_ES1_0) {
/* Configure LDO SRAM "magic" bits */
writel(2, &prcm->prm_sldo_core_setup);
writel(2, &prcm->prm_sldo_mpu_setup);
writel(2, &prcm->prm_sldo_mm_setup);
}
}
u32 get_offset_code(u32 volt_offset)
{
u32 offset_code, step = 10000; /* 10 mV represented in uV */
volt_offset -= PALMAS_SMPS_BASE_VOLT_UV;
offset_code = (volt_offset + step - 1) / step;
/*
* Offset codes 1-6 all give the base voltage in Palmas
* Offset code 0 switches OFF the SMPS
*/
return offset_code + 6;
}
/*
* Enable essential clock domains, modules and
* do some additional special settings needed
*/
void enable_basic_clocks(void)
{
u32 *const clk_domains_essential[] = {
&prcm->cm_l4per_clkstctrl,
&prcm->cm_l3init_clkstctrl,
&prcm->cm_memif_clkstctrl,
&prcm->cm_l4cfg_clkstctrl,
0
};
u32 *const clk_modules_hw_auto_essential[] = {
&prcm->cm_l3_2_gpmc_clkctrl,
&prcm->cm_memif_emif_1_clkctrl,
&prcm->cm_memif_emif_2_clkctrl,
&prcm->cm_l4cfg_l4_cfg_clkctrl,
&prcm->cm_wkup_gpio1_clkctrl,
&prcm->cm_l4per_gpio2_clkctrl,
&prcm->cm_l4per_gpio3_clkctrl,
&prcm->cm_l4per_gpio4_clkctrl,
&prcm->cm_l4per_gpio5_clkctrl,
&prcm->cm_l4per_gpio6_clkctrl,
0
};
u32 *const clk_modules_explicit_en_essential[] = {
&prcm->cm_wkup_gptimer1_clkctrl,
&prcm->cm_l3init_hsmmc1_clkctrl,
&prcm->cm_l3init_hsmmc2_clkctrl,
&prcm->cm_l4per_gptimer2_clkctrl,
&prcm->cm_wkup_wdtimer2_clkctrl,
&prcm->cm_l4per_uart3_clkctrl,
&prcm->cm_l4per_i2c1_clkctrl,
0
};
/* Enable optional additional functional clock for GPIO4 */
setbits_le32(&prcm->cm_l4per_gpio4_clkctrl,
GPIO4_CLKCTRL_OPTFCLKEN_MASK);
/* Enable 96 MHz clock for MMC1 & MMC2 */
setbits_le32(&prcm->cm_l3init_hsmmc1_clkctrl,
HSMMC_CLKCTRL_CLKSEL_MASK);
setbits_le32(&prcm->cm_l3init_hsmmc2_clkctrl,
HSMMC_CLKCTRL_CLKSEL_MASK);
/* Set the correct clock dividers for mmc */
setbits_le32(&prcm->cm_l3init_hsmmc1_clkctrl,
HSMMC_CLKCTRL_CLKSEL_DIV_MASK);
setbits_le32(&prcm->cm_l3init_hsmmc2_clkctrl,
HSMMC_CLKCTRL_CLKSEL_DIV_MASK);
/* Select 32KHz clock as the source of GPTIMER1 */
setbits_le32(&prcm->cm_wkup_gptimer1_clkctrl,
GPTIMER1_CLKCTRL_CLKSEL_MASK);
do_enable_clocks(clk_domains_essential,
clk_modules_hw_auto_essential,
clk_modules_explicit_en_essential,
1);
/* Select 384Mhz for GPU as its the POR for ES1.0 */
setbits_le32(&prcm->cm_sgx_sgx_clkctrl,
CLKSEL_GPU_HYD_GCLK_MASK);
setbits_le32(&prcm->cm_sgx_sgx_clkctrl,
CLKSEL_GPU_CORE_GCLK_MASK);
/* Enable SCRM OPT clocks for PER and CORE dpll */
setbits_le32(&prcm->cm_wkupaon_scrm_clkctrl,
OPTFCLKEN_SCRM_PER_MASK);
setbits_le32(&prcm->cm_wkupaon_scrm_clkctrl,
OPTFCLKEN_SCRM_CORE_MASK);
}
void enable_basic_uboot_clocks(void)
{
u32 *const clk_domains_essential[] = {
0
};
u32 *const clk_modules_hw_auto_essential[] = {
0
};
u32 *const clk_modules_explicit_en_essential[] = {
&prcm->cm_l4per_mcspi1_clkctrl,
&prcm->cm_l4per_i2c2_clkctrl,
&prcm->cm_l4per_i2c3_clkctrl,
&prcm->cm_l4per_i2c4_clkctrl,
&prcm->cm_l3init_hsusbtll_clkctrl,
&prcm->cm_l3init_hsusbhost_clkctrl,
&prcm->cm_l3init_fsusb_clkctrl,
0
};
do_enable_clocks(clk_domains_essential,
clk_modules_hw_auto_essential,
clk_modules_explicit_en_essential,
1);
}
/*
* Enable non-essential clock domains, modules and
* do some additional special settings needed
*/
void enable_non_essential_clocks(void)
{
u32 *const clk_domains_non_essential[] = {
&prcm->cm_mpu_m3_clkstctrl,
&prcm->cm_ivahd_clkstctrl,
&prcm->cm_dsp_clkstctrl,
&prcm->cm_dss_clkstctrl,
&prcm->cm_sgx_clkstctrl,
&prcm->cm1_abe_clkstctrl,
&prcm->cm_c2c_clkstctrl,
&prcm->cm_cam_clkstctrl,
&prcm->cm_dss_clkstctrl,
&prcm->cm_sdma_clkstctrl,
0
};
u32 *const clk_modules_hw_auto_non_essential[] = {
&prcm->cm_mpu_m3_mpu_m3_clkctrl,
&prcm->cm_ivahd_ivahd_clkctrl,
&prcm->cm_ivahd_sl2_clkctrl,
&prcm->cm_dsp_dsp_clkctrl,
&prcm->cm_l3instr_l3_3_clkctrl,
&prcm->cm_l3instr_l3_instr_clkctrl,
&prcm->cm_l3instr_intrconn_wp1_clkctrl,
&prcm->cm_l3init_hsi_clkctrl,
&prcm->cm_l4per_hdq1w_clkctrl,
0
};
u32 *const clk_modules_explicit_en_non_essential[] = {
&prcm->cm1_abe_aess_clkctrl,
&prcm->cm1_abe_pdm_clkctrl,
&prcm->cm1_abe_dmic_clkctrl,
&prcm->cm1_abe_mcasp_clkctrl,
&prcm->cm1_abe_mcbsp1_clkctrl,
&prcm->cm1_abe_mcbsp2_clkctrl,
&prcm->cm1_abe_mcbsp3_clkctrl,
&prcm->cm1_abe_slimbus_clkctrl,
&prcm->cm1_abe_timer5_clkctrl,
&prcm->cm1_abe_timer6_clkctrl,
&prcm->cm1_abe_timer7_clkctrl,
&prcm->cm1_abe_timer8_clkctrl,
&prcm->cm1_abe_wdt3_clkctrl,
&prcm->cm_l4per_gptimer9_clkctrl,
&prcm->cm_l4per_gptimer10_clkctrl,
&prcm->cm_l4per_gptimer11_clkctrl,
&prcm->cm_l4per_gptimer3_clkctrl,
&prcm->cm_l4per_gptimer4_clkctrl,
&prcm->cm_l4per_mcspi2_clkctrl,
&prcm->cm_l4per_mcspi3_clkctrl,
&prcm->cm_l4per_mcspi4_clkctrl,
&prcm->cm_l4per_mmcsd3_clkctrl,
&prcm->cm_l4per_mmcsd4_clkctrl,
&prcm->cm_l4per_mmcsd5_clkctrl,
&prcm->cm_l4per_uart1_clkctrl,
&prcm->cm_l4per_uart2_clkctrl,
&prcm->cm_l4per_uart4_clkctrl,
&prcm->cm_wkup_keyboard_clkctrl,
&prcm->cm_wkup_wdtimer2_clkctrl,
&prcm->cm_cam_iss_clkctrl,
&prcm->cm_cam_fdif_clkctrl,
&prcm->cm_dss_dss_clkctrl,
&prcm->cm_sgx_sgx_clkctrl,
0
};
/* Enable optional functional clock for ISS */
setbits_le32(&prcm->cm_cam_iss_clkctrl, ISS_CLKCTRL_OPTFCLKEN_MASK);
/* Enable all optional functional clocks of DSS */
setbits_le32(&prcm->cm_dss_dss_clkctrl, DSS_CLKCTRL_OPTFCLKEN_MASK);
do_enable_clocks(clk_domains_non_essential,
clk_modules_hw_auto_non_essential,
clk_modules_explicit_en_non_essential,
0);
/* Put camera module in no sleep mode */
clrsetbits_le32(&prcm->cm_cam_clkstctrl, MODULE_CLKCTRL_MODULEMODE_MASK,
CD_CLKCTRL_CLKTRCTRL_NO_SLEEP <<
MODULE_CLKCTRL_MODULEMODE_SHIFT);
}
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