This patch adds support for BPLL clock.
Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Joonyoung Shim jy0922.shim@samsung.com --- Changes in V3: - New Patch. Changes in V4: - Removed warning message. Changes in V5: - fixed indentation error arch/arm/cpu/armv7/exynos/clock.c | 28 +++++++++++++++++++++------- arch/arm/include/asm/arch-exynos/clk.h | 1 + arch/arm/include/asm/arch-exynos/clock.h | 2 ++ 3 files changed, 24 insertions(+), 7 deletions(-)
diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c index dbd5f11..fc0ed5e 100644 --- a/arch/arm/cpu/armv7/exynos/clock.c +++ b/arch/arm/cpu/armv7/exynos/clock.c @@ -98,7 +98,7 @@ static unsigned long exynos5_get_pll_clk(int pllreg) struct exynos5_clock *clk = (struct exynos5_clock *)samsung_get_base_clock(); unsigned long r, m, p, s, k = 0, mask, fout; - unsigned int freq, pll_div2_sel, mpll_fout_sel; + unsigned int freq, pll_div2_sel, fout_sel;
switch (pllreg) { case APLL: @@ -115,6 +115,9 @@ static unsigned long exynos5_get_pll_clk(int pllreg) r = readl(&clk->vpll_con0); k = readl(&clk->vpll_con1); break; + case BPLL: + r = readl(&clk->bpll_con0); + break; default: printf("Unsupported PLL (%d)\n", pllreg); return 0; @@ -125,8 +128,9 @@ static unsigned long exynos5_get_pll_clk(int pllreg) * MPLL_CON: MIDV [25:16] * EPLL_CON: MIDV [24:16] * VPLL_CON: MIDV [24:16] + * BPLL_CON: MIDV [25:16] */ - if (pllreg == APLL || pllreg == MPLL) + if (pllreg == APLL || pllreg == MPLL || pllreg == BPLL) mask = 0x3ff; else mask = 0x1ff; @@ -155,13 +159,23 @@ static unsigned long exynos5_get_pll_clk(int pllreg) fout = m * (freq / (p * (1 << (s - 1)))); }
- /* According to the user manual, in EVT1 MPLL always gives + /* According to the user manual, in EVT1 MPLL and BPLL always gives * 1.6GHz clock, so divide by 2 to get 800MHz MPLL clock.*/ - if (pllreg == MPLL) { + if (pllreg == MPLL || pllreg == BPLL) { pll_div2_sel = readl(&clk->pll_div2_sel); - mpll_fout_sel = (pll_div2_sel >> MPLL_FOUT_SEL_SHIFT) - & MPLL_FOUT_SEL_MASK; - if (mpll_fout_sel == 0) + + switch (pllreg) { + case MPLL: + fout_sel = (pll_div2_sel >> MPLL_FOUT_SEL_SHIFT) + & MPLL_FOUT_SEL_MASK; + break; + case BPLL: + fout_sel = (pll_div2_sel >> BPLL_FOUT_SEL_SHIFT) + & BPLL_FOUT_SEL_MASK; + break; + } + + if (fout_sel == 0) fout /= 2; }
diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h index 637fb4b..e99339a 100644 --- a/arch/arm/include/asm/arch-exynos/clk.h +++ b/arch/arm/include/asm/arch-exynos/clk.h @@ -27,6 +27,7 @@ #define EPLL 2 #define HPLL 3 #define VPLL 4 +#define BPLL 5
unsigned long get_pll_clk(int pllreg); unsigned long get_arm_clk(void); diff --git a/arch/arm/include/asm/arch-exynos/clock.h b/arch/arm/include/asm/arch-exynos/clock.h index bf41c19..fce38ef 100644 --- a/arch/arm/include/asm/arch-exynos/clock.h +++ b/arch/arm/include/asm/arch-exynos/clock.h @@ -599,4 +599,6 @@ struct exynos5_clock {
#define MPLL_FOUT_SEL_SHIFT 4 #define MPLL_FOUT_SEL_MASK 0x1 +#define BPLL_FOUT_SEL_SHIFT 0 +#define BPLL_FOUT_SEL_MASK 0x1 #endif