From: Kever Yang Date: Fri, 23 Sep 2016 07:57:17 +0000 (+0800) Subject: rockchip: rk3399: update PPLL and pmu_pclk frequency X-Git-Tag: v2016.11-rc1~1^2~11 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=8389dcbf98b756d01b0b31679d3b83119382ac51;p=oweals%2Fu-boot.git rockchip: rk3399: update PPLL and pmu_pclk frequency Update PPLL to 676MHz and PMU_PCLK to 48MHz, because: 1. 48MHz can make sure the pwm can get exact 50% duty ratio, but 99MHz can not, 2. We think 48MHz is fast enough for pmu pclk and it is lower power cost than 99MHz, 3. PPLL 676 MHz and PMU_PCLK 48MHz are the clock rate we are using internally for kernel,it suppose not to change the bus clock like pmu_pclk in kernel, so we want to change it in uboot. Signed-off-by: Kever Yang Acked-by: Simon Glass --- diff --git a/arch/arm/include/asm/arch-rockchip/cru_rk3399.h b/arch/arm/include/asm/arch-rockchip/cru_rk3399.h index c919f47745..6776e484b7 100644 --- a/arch/arm/include/asm/arch-rockchip/cru_rk3399.h +++ b/arch/arm/include/asm/arch-rockchip/cru_rk3399.h @@ -64,9 +64,9 @@ check_member(rk3399_cru, sdio1_con[1], 0x594); #define APLL_HZ (600*MHz) #define GPLL_HZ (594*MHz) #define CPLL_HZ (384*MHz) -#define PPLL_HZ (594*MHz) +#define PPLL_HZ (676*MHz) -#define PMU_PCLK_HZ (99*MHz) +#define PMU_PCLK_HZ (48*MHz) #define ACLKM_CORE_HZ (300*MHz) #define ATCLK_CORE_HZ (300*MHz)