ARM: stm32: use clock setup function defined in clock.c

Use the clock setup function defined in clock.c instead of setting the
clock bits directly in the drivers.
Remove register definitions of RCC in rcc.h as these are already
defined in the struct in stm32.h

Signed-off-by: Michael Kurz <michi.kurz@gmail.com>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Vikas Manocha <vikas.manocha@st.com>

arch/arm/include/asm/arch-stm32f7/rcc.h

@@ -8,32 +8,6 @@
 #ifndef _STM32_RCC_H
 #define _STM32_RCC_H
 
-#define RCC_CR		0x00	/* clock control */
-#define RCC_PLLCFGR	0x04	/* PLL configuration */
-#define RCC_CFGR	0x08	/* clock configuration */
-#define RCC_CIR		0x0C	/* clock interrupt */
-#define RCC_AHB1RSTR	0x10	/* AHB1 peripheral reset */
-#define RCC_AHB2RSTR	0x14	/* AHB2 peripheral reset */
-#define RCC_AHB3RSTR	0x18	/* AHB3 peripheral reset */
-#define RCC_APB1RSTR	0x20	/* APB1 peripheral reset */
-#define RCC_APB2RSTR	0x24	/* APB2 peripheral reset */
-#define RCC_AHB1ENR	0x30	/* AHB1 peripheral clock enable */
-#define RCC_AHB2ENR	0x34	/* AHB2 peripheral clock enable */
-#define RCC_AHB3ENR	0x38	/* AHB3 peripheral clock enable */
-#define RCC_APB1ENR	0x40	/* APB1 peripheral clock enable */
-#define RCC_APB2ENR	0x44	/* APB2 peripheral clock enable */
-#define RCC_AHB1LPENR	0x50	/* periph clk enable in low pwr mode */
-#define RCC_AHB2LPENR	0x54	/* AHB2 periph clk enable in low pwr mode */
-#define RCC_AHB3LPENR	0x58	/* AHB3 periph clk enable in low pwr mode */
-#define RCC_APB1LPENR	0x60	/* APB1 periph clk enable in low pwr mode */
-#define RCC_APB2LPENR	0x64	/* APB2 periph clk enable in low pwr mode */
-#define RCC_BDCR	0x70	/* Backup domain control */
-#define RCC_CSR		0x74	/* clock control & status */
-#define RCC_SSCGR	0x80	/* spread spectrum clock generation */
-#define RCC_PLLI2SCFGR	0x84	/* PLLI2S configuration */
-#define RCC_PLLSAICFG	0x88	/* PLLSAI configuration */
-#define RCC_DCKCFG1	0x8C	/* dedicated clocks configuration register */
-#define RCC_DCKCFG2	0x90	/* dedicated clocks configuration register */
 /*
  * RCC AHB1ENR specific definitions
  */

arch/arm/include/asm/arch-stm32f7/stm32_periph.h

@@ -33,6 +33,9 @@ enum periph_clock {
 	GPIO_I_CLOCK_CFG,
 	GPIO_J_CLOCK_CFG,
 	GPIO_K_CLOCK_CFG,
+	SYSCFG_CLOCK_CFG,
+	TIMER2_CLOCK_CFG,
+	FMC_CLOCK_CFG,
 };
 
 #endif /* __ASM_ARM_ARCH_PERIPH_H */

arch/arm/mach-stm32/stm32f7/clock.c

@@ -252,6 +252,15 @@ void clock_setup(int peripheral)
 	case GPIO_K_CLOCK_CFG:
 		setbits_le32(&STM32_RCC->ahb1enr, RCC_AHB1ENR_GPIO_K_EN);
 		break;
+	case SYSCFG_CLOCK_CFG:
+		setbits_le32(&STM32_RCC->apb2enr, RCC_APB2ENR_SYSCFGEN);
+		break;
+	case TIMER2_CLOCK_CFG:
+		setbits_le32(&STM32_RCC->apb1enr, RCC_APB1ENR_TIM2EN);
+		break;
+	case FMC_CLOCK_CFG:
+		setbits_le32(&STM32_RCC->ahb3enr, RCC_AHB3ENR_FMC_EN);
+		break;
 	default:
 		break;
 	}

arch/arm/mach-stm32/stm32f7/timer.c

@@ -8,8 +8,8 @@
 #include <common.h>
 #include <asm/io.h>
 #include <asm/arch/stm32.h>
+#include <asm/arch/stm32_defs.h>
 #include <asm/arch/gpt.h>
-#include <asm/arch/rcc.h>
 
 #define READ_TIMER()	(readl(&gpt1_regs_ptr->cnt) & GPT_FREE_RUNNING)
 #define GPT_RESOLUTION	(CONFIG_SYS_HZ_CLOCK/CONFIG_STM32_HZ)
@@ -22,7 +22,7 @@ DECLARE_GLOBAL_DATA_PTR;
 int timer_init(void)
 {
 	/* Timer2 clock configuration */
-	setbits_le32(RCC_BASE + RCC_APB1ENR, RCC_APB1ENR_TIM2EN);
+	clock_setup(TIMER2_CLOCK_CFG);
 	/* Stop the timer */
 	writel(readl(&gpt1_regs_ptr->cr1) & ~GPT_CR1_CEN, &gpt1_regs_ptr->cr1);
 

board/st/stm32f746-disco/stm32f746-disco.c

@@ -10,7 +10,6 @@
 #include <asm/armv7m.h>
 #include <asm/arch/stm32.h>
 #include <asm/arch/gpio.h>
-#include <asm/arch/rcc.h>
 #include <asm/arch/fmc.h>
 #include <dm/platdata.h>
 #include <dm/platform_data/serial_stm32x7.h>
@@ -171,7 +170,7 @@ int dram_init(void)
 	if (rv)
 		return rv;
 
-	setbits_le32(&STM32_RCC->ahb3enr, RCC_AHB3ENR_FMC_EN);
+	clock_setup(FMC_CLOCK_CFG);
 
 	/*
 	 * Get frequency for NS2CLK calculation.