include/stm32_rcc.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * Copyright (C) STMicroelectronics SA 2017
   4  * Author(s): Patrice CHOTARD, <patrice.chotard@st.com> for STMicroelectronics.
   5  */
   6
   7 #ifndef __STM32_RCC_H_
   8 #define __STM32_RCC_H_
   9
  10 #define AHB_PSC_1                       0
  11 #define AHB_PSC_2                       0x8
  12 #define AHB_PSC_4                       0x9
  13 #define AHB_PSC_8                       0xA
  14 #define AHB_PSC_16                      0xB
  15 #define AHB_PSC_64                      0xC
  16 #define AHB_PSC_128                     0xD
  17 #define AHB_PSC_256                     0xE
  18 #define AHB_PSC_512                     0xF
  19
  20 #define APB_PSC_1                       0
  21 #define APB_PSC_2                       0x4
  22 #define APB_PSC_4                       0x5
  23 #define APB_PSC_8                       0x6
  24 #define APB_PSC_16                      0x7
  25
  26 struct pll_psc {
  27         u8      pll_m;
  28         u16     pll_n;
  29         u8      pll_p;
  30         u8      pll_q;
  31         u8      ahb_psc;
  32         u8      apb1_psc;
  33         u8      apb2_psc;
  34 };
  35
  36 struct stm32_clk_info {
  37         struct pll_psc sys_pll_psc;
  38         bool has_overdrive;
  39         bool v2;
  40 };
  41
  42 enum soc_family {
  43         STM32F42X,
  44         STM32F469,
  45         STM32F7,
  46         STM32MP1,
  47 };
  48
  49 enum apb {
  50         APB1,
  51         APB2,
  52 };
  53
  54 struct stm32_rcc_clk {
  55         char *drv_name;
  56         enum soc_family soc;
  57 };
  58
  59 struct stm32_rcc_regs {
  60         u32 cr;         /* RCC clock control */
  61         u32 pllcfgr;    /* RCC PLL configuration */
  62         u32 cfgr;       /* RCC clock configuration */
  63         u32 cir;        /* RCC clock interrupt */
  64         u32 ahb1rstr;   /* RCC AHB1 peripheral reset */
  65         u32 ahb2rstr;   /* RCC AHB2 peripheral reset */
  66         u32 ahb3rstr;   /* RCC AHB3 peripheral reset */
  67         u32 rsv0;
  68         u32 apb1rstr;   /* RCC APB1 peripheral reset */
  69         u32 apb2rstr;   /* RCC APB2 peripheral reset */
  70         u32 rsv1[2];
  71         u32 ahb1enr;    /* RCC AHB1 peripheral clock enable */
  72         u32 ahb2enr;    /* RCC AHB2 peripheral clock enable */
  73         u32 ahb3enr;    /* RCC AHB3 peripheral clock enable */
  74         u32 rsv2;
  75         u32 apb1enr;    /* RCC APB1 peripheral clock enable */
  76         u32 apb2enr;    /* RCC APB2 peripheral clock enable */
  77         u32 rsv3[2];
  78         u32 ahb1lpenr;  /* RCC AHB1 periph clk enable in low pwr mode */
  79         u32 ahb2lpenr;  /* RCC AHB2 periph clk enable in low pwr mode */
  80         u32 ahb3lpenr;  /* RCC AHB3 periph clk enable in low pwr mode */
  81         u32 rsv4;
  82         u32 apb1lpenr;  /* RCC APB1 periph clk enable in low pwr mode */
  83         u32 apb2lpenr;  /* RCC APB2 periph clk enable in low pwr mode */
  84         u32 rsv5[2];
  85         u32 bdcr;       /* RCC Backup domain control */
  86         u32 csr;        /* RCC clock control & status */
  87         u32 rsv6[2];
  88         u32 sscgr;      /* RCC spread spectrum clock generation */
  89         u32 plli2scfgr; /* RCC PLLI2S configuration */
  90         /* below registers are only available on STM32F46x and STM32F7 SoCs*/
  91         u32 pllsaicfgr; /* PLLSAI configuration */
  92         u32 dckcfgr;    /* dedicated clocks configuration register */
  93         /* Below registers are only available on STM32F7 SoCs */
  94         u32 dckcfgr2;   /* dedicated clocks configuration register */
  95 };
  96
  97 #endif /* __STM32_RCC_H_ */