diff options
Diffstat (limited to 'drivers/clk/rockchip/clk_rk3399.c')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk3399.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/clk/rockchip/clk_rk3399.c b/drivers/clk/rockchip/clk_rk3399.c index 53d2a3f85d..ec149c8be8 100644 --- a/drivers/clk/rockchip/clk_rk3399.c +++ b/drivers/clk/rockchip/clk_rk3399.c @@ -750,18 +750,21 @@ static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id) case HCLK_SDMMC: case SCLK_SDMMC: con = readl(&cru->clksel_con[16]); + /* dwmmc controller have internal div 2 */ + div = 2; break; case SCLK_EMMC: con = readl(&cru->clksel_con[21]); + div = 1; break; default: return -EINVAL; } - div = (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT; + div *= (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT; if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT == CLK_EMMC_PLL_SEL_24M) - return DIV_TO_RATE(24*1000*1000, div); + return DIV_TO_RATE(OSC_HZ, div); else return DIV_TO_RATE(GPLL_HZ, div); } @@ -776,11 +779,12 @@ static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru, case HCLK_SDMMC: case SCLK_SDMMC: /* Select clk_sdmmc source from GPLL by default */ - src_clk_div = GPLL_HZ / set_rate; + /* mmc clock defaulg div 2 internal, provide double in cru */ + src_clk_div = DIV_ROUND_UP(GPLL_HZ / 2, set_rate); if (src_clk_div > 127) { /* use 24MHz source for 400KHz clock */ - src_clk_div = 24*1000*1000 / set_rate; + src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate); rk_clrsetreg(&cru->clksel_con[16], CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK, CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT | |