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d090cbab64
Following next kernel rcc bindings, we must use a MFD RCC driver which is able to bind both clock and reset drivers. We can reuse and adapt RCC MFD driver already available for MCU SoCs (F4/F7/H7). Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
98 lines
2.5 KiB
C
98 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) STMicroelectronics SA 2017
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* Author(s): Patrice CHOTARD, <patrice.chotard@st.com> for STMicroelectronics.
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*/
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#ifndef __STM32_RCC_H_
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#define __STM32_RCC_H_
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#define AHB_PSC_1 0
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#define AHB_PSC_2 0x8
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#define AHB_PSC_4 0x9
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#define AHB_PSC_8 0xA
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#define AHB_PSC_16 0xB
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#define AHB_PSC_64 0xC
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#define AHB_PSC_128 0xD
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#define AHB_PSC_256 0xE
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#define AHB_PSC_512 0xF
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#define APB_PSC_1 0
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#define APB_PSC_2 0x4
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#define APB_PSC_4 0x5
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#define APB_PSC_8 0x6
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#define APB_PSC_16 0x7
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struct pll_psc {
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u8 pll_m;
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u16 pll_n;
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u8 pll_p;
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u8 pll_q;
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u8 ahb_psc;
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u8 apb1_psc;
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u8 apb2_psc;
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};
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struct stm32_clk_info {
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struct pll_psc sys_pll_psc;
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bool has_overdrive;
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bool v2;
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};
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enum soc_family {
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STM32F42X,
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STM32F469,
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STM32F7,
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STM32MP1,
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};
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enum apb {
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APB1,
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APB2,
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};
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struct stm32_rcc_clk {
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char *drv_name;
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enum soc_family soc;
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};
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struct stm32_rcc_regs {
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u32 cr; /* RCC clock control */
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u32 pllcfgr; /* RCC PLL configuration */
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u32 cfgr; /* RCC clock configuration */
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u32 cir; /* RCC clock interrupt */
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u32 ahb1rstr; /* RCC AHB1 peripheral reset */
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u32 ahb2rstr; /* RCC AHB2 peripheral reset */
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u32 ahb3rstr; /* RCC AHB3 peripheral reset */
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u32 rsv0;
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u32 apb1rstr; /* RCC APB1 peripheral reset */
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u32 apb2rstr; /* RCC APB2 peripheral reset */
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u32 rsv1[2];
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u32 ahb1enr; /* RCC AHB1 peripheral clock enable */
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u32 ahb2enr; /* RCC AHB2 peripheral clock enable */
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u32 ahb3enr; /* RCC AHB3 peripheral clock enable */
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u32 rsv2;
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u32 apb1enr; /* RCC APB1 peripheral clock enable */
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u32 apb2enr; /* RCC APB2 peripheral clock enable */
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u32 rsv3[2];
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u32 ahb1lpenr; /* RCC AHB1 periph clk enable in low pwr mode */
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u32 ahb2lpenr; /* RCC AHB2 periph clk enable in low pwr mode */
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u32 ahb3lpenr; /* RCC AHB3 periph clk enable in low pwr mode */
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u32 rsv4;
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u32 apb1lpenr; /* RCC APB1 periph clk enable in low pwr mode */
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u32 apb2lpenr; /* RCC APB2 periph clk enable in low pwr mode */
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u32 rsv5[2];
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u32 bdcr; /* RCC Backup domain control */
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u32 csr; /* RCC clock control & status */
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u32 rsv6[2];
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u32 sscgr; /* RCC spread spectrum clock generation */
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u32 plli2scfgr; /* RCC PLLI2S configuration */
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/* below registers are only available on STM32F46x and STM32F7 SoCs*/
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u32 pllsaicfgr; /* PLLSAI configuration */
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u32 dckcfgr; /* dedicated clocks configuration register */
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/* Below registers are only available on STM32F7 SoCs */
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u32 dckcfgr2; /* dedicated clocks configuration register */
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};
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#endif /* __STM32_RCC_H_ */
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