From f70409aff3a10e22ff9c66f87e9cbc3de7cbd7f7 Mon Sep 17 00:00:00 2001 From: Minkyu Kang Date: Tue, 24 Aug 2010 15:51:55 +0900 Subject: ARMV7: S5P: separate the peripheral clocks Because of peripheral devices can select clock sources, separate the peripheral clocks. (pwm, uart and so on) It just return the pclk at s5pc1xx SoC, but s5pc210 SoC must be calculated by own clock register setting. Signed-off-by: Minkyu Kang Signed-off-by: Kyungmin Park --- arch/arm/cpu/armv7/s5p-common/timer.c | 4 ++-- arch/arm/cpu/armv7/s5pc1xx/clock.c | 25 ++++++++++++++++++++++--- 2 files changed, 24 insertions(+), 5 deletions(-) (limited to 'arch/arm/cpu') diff --git a/arch/arm/cpu/armv7/s5p-common/timer.c b/arch/arm/cpu/armv7/s5p-common/timer.c index 1f1c7ff..0490650 100644 --- a/arch/arm/cpu/armv7/s5p-common/timer.c +++ b/arch/arm/cpu/armv7/s5p-common/timer.c @@ -57,7 +57,7 @@ int timer_init(void) /* * @ PWM Timer 4 * Timer Freq(HZ) = - * PCLK / { (prescaler_value + 1) * (divider_value) } + * PWM_CLK / { (prescaler_value + 1) * (divider_value) } */ /* set prescaler : 16 */ @@ -68,7 +68,7 @@ int timer_init(void) if (count_value == 0) { /* reset initial value */ /* count_value = 2085937.5(HZ) (per 1 sec)*/ - count_value = get_pclk() / ((PRESCALER_1 + 1) * + count_value = get_pwm_clk() / ((PRESCALER_1 + 1) * (MUX_DIV_2 + 1)); /* count_value / 100 = 20859.375(HZ) (per 10 msec) */ diff --git a/arch/arm/cpu/armv7/s5pc1xx/clock.c b/arch/arm/cpu/armv7/s5pc1xx/clock.c index c9b5485..98a27e5 100644 --- a/arch/arm/cpu/armv7/s5pc1xx/clock.c +++ b/arch/arm/cpu/armv7/s5pc1xx/clock.c @@ -38,7 +38,8 @@ #define CONFIG_SYS_CLK_FREQ_C110 24000000 #endif -unsigned long (*get_pclk)(void); +unsigned long (*get_uart_clk)(int dev_index); +unsigned long (*get_pwm_clk)(void); unsigned long (*get_arm_clk)(void); unsigned long (*get_pll_clk)(int); @@ -297,15 +298,33 @@ static unsigned long s5pc100_get_pclk(void) return get_pclkd1(); } +/* s5pc1xx: return uart clock frequency */ +static unsigned long s5pc1xx_get_uart_clk(int dev_index) +{ + if (cpu_is_s5pc110()) + return s5pc110_get_pclk(); + else + return s5pc100_get_pclk(); +} + +/* s5pc1xx: return pwm clock frequency */ +static unsigned long s5pc1xx_get_pwm_clk(void) +{ + if (cpu_is_s5pc110()) + return s5pc110_get_pclk(); + else + return s5pc100_get_pclk(); +} + void s5p_clock_init(void) { if (cpu_is_s5pc110()) { get_pll_clk = s5pc110_get_pll_clk; get_arm_clk = s5pc110_get_arm_clk; - get_pclk = s5pc110_get_pclk; } else { get_pll_clk = s5pc100_get_pll_clk; get_arm_clk = s5pc100_get_arm_clk; - get_pclk = s5pc100_get_pclk; } + get_uart_clk = s5pc1xx_get_uart_clk; + get_pwm_clk = s5pc1xx_get_pwm_clk; } -- cgit v1.1