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| author | Minkyu Kang <mk7.kang@samsung.com> | 2011-05-18 16:57:55 +0900 |
|---|---|---|
| committer | Minkyu Kang <mk7.kang@samsung.com> | 2011-05-26 19:33:25 +0900 |
| commit | b4f73910d90aeff8e536acc4c91d9ef722e423a3 (patch) | |
| tree | 119dfe345f226245cff441824a9ddbeff628947b /arch | |
| parent | 68a8cbfad93241387ee1385b9d19e3e2b7919c4e (diff) | |
| download | u-boot-imx-b4f73910d90aeff8e536acc4c91d9ef722e423a3.zip u-boot-imx-b4f73910d90aeff8e536acc4c91d9ef722e423a3.tar.gz u-boot-imx-b4f73910d90aeff8e536acc4c91d9ef722e423a3.tar.bz2 | |
S5PC2XX: clock: support pwm clock for evt1 (cpu revision 1)
The source of pwm clock is fixed at evt1.
And some registers for pwm clock are removed.
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/s5pc2xx/clock.c | 46 |
1 files changed, 26 insertions, 20 deletions
diff --git a/arch/arm/cpu/armv7/s5pc2xx/clock.c b/arch/arm/cpu/armv7/s5pc2xx/clock.c index 624de62..5ecd475 100644 --- a/arch/arm/cpu/armv7/s5pc2xx/clock.c +++ b/arch/arm/cpu/armv7/s5pc2xx/clock.c @@ -124,29 +124,35 @@ static unsigned long s5pc210_get_pwm_clk(void) unsigned int sel; unsigned int ratio; - /* - * CLK_SRC_PERIL0 - * PWM_SEL [27:24] - */ - sel = readl(&clk->src_peril0); - sel = (sel >> 24) & 0xf; - - if (sel == 0x6) + if (s5p_get_cpu_rev() == 0) { + /* + * CLK_SRC_PERIL0 + * PWM_SEL [27:24] + */ + sel = readl(&clk->src_peril0); + sel = (sel >> 24) & 0xf; + + if (sel == 0x6) + sclk = get_pll_clk(MPLL); + else if (sel == 0x7) + sclk = get_pll_clk(EPLL); + else if (sel == 0x8) + sclk = get_pll_clk(VPLL); + else + return 0; + + /* + * CLK_DIV_PERIL3 + * PWM_RATIO [3:0] + */ + ratio = readl(&clk->div_peril3); + ratio = ratio & 0xf; + } else if (s5p_get_cpu_rev() == 1) { sclk = get_pll_clk(MPLL); - else if (sel == 0x7) - sclk = get_pll_clk(EPLL); - else if (sel == 0x8) - sclk = get_pll_clk(VPLL); - else + ratio = 8; + } else return 0; - /* - * CLK_DIV_PERIL3 - * PWM_RATIO [3:0] - */ - ratio = readl(&clk->div_peril3); - ratio = ratio & 0xf; - pclk = sclk / (ratio + 1); return pclk; |