From: Jeong-Hyeon Kim jhkim@insignal.co.kr
Exynos SoC series are various and cover the different range of MCLK. Several clock setting is based on MPLL, but it's to easy change depend on board configuration. So, common setting of clock need for cover the various type of memory. System clock (XXTI) is one of solution for it.
Signed-off-by: Jeong-Hyeon Kim jhkim@insignal.co.kr --- arch/arm/cpu/armv7/exynos/clock.c | 16 ++++++++++++---- 1 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c index 4f3b451..680aeeb 100644 --- a/arch/arm/cpu/armv7/exynos/clock.c +++ b/arch/arm/cpu/armv7/exynos/clock.c @@ -246,7 +246,9 @@ static unsigned long exynos4_get_pwm_clk(void) sel = readl(&clk->src_peril0); sel = (sel >> 24) & 0xf;
- if (sel == 0x6) + if (sel == 0x0 || sel == 0x1) + sclk = CONFIG_SYS_CLK_FREQ; + else if (sel == 0x6) sclk = get_pll_clk(MPLL); else if (sel == 0x7) sclk = get_pll_clk(EPLL); @@ -314,7 +316,9 @@ static unsigned long exynos4_get_uart_clk(int dev_index) sel = readl(&clk->src_peril0); sel = (sel >> (dev_index << 2)) & 0xf;
- if (sel == 0x6) + if (sel == 0x0 || sel == 0x1) + sclk = CONFIG_SYS_CLK_FREQ; + else if (sel == 0x6) sclk = get_pll_clk(MPLL); else if (sel == 0x7) sclk = get_pll_clk(EPLL); @@ -361,7 +365,9 @@ static unsigned long exynos5_get_uart_clk(int dev_index) sel = readl(&clk->src_peric0); sel = (sel >> (dev_index << 2)) & 0xf;
- if (sel == 0x6) + if (sel == 0x0 || sel == 0x1) + sclk = CONFIG_SYS_CLK_FREQ; + else if (sel == 0x6) sclk = get_pll_clk(MPLL); else if (sel == 0x7) sclk = get_pll_clk(EPLL); @@ -462,7 +468,9 @@ static unsigned long exynos4_get_lcd_clk(void) * 0x7: SCLK_EPLL * 0x8: SCLK_VPLL */ - if (sel == 0x6) + if (sel == 0x0 || sel == 0x1) + sclk = CONFIG_SYS_CLK_FREQ; + else if (sel == 0x6) sclk = get_pll_clk(MPLL); else if (sel == 0x7) sclk = get_pll_clk(EPLL);