diff options
Diffstat (limited to 'drivers/clk/rockchip/clk_rk322x.c')
| -rw-r--r-- | drivers/clk/rockchip/clk_rk322x.c | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/drivers/clk/rockchip/clk_rk322x.c b/drivers/clk/rockchip/clk_rk322x.c index fdeb816e23..d7f6a3c313 100644 --- a/drivers/clk/rockchip/clk_rk322x.c +++ b/drivers/clk/rockchip/clk_rk322x.c @@ -26,9 +26,6 @@ enum { OUTPUT_MIN_HZ = 24 * 1000000, }; -#define RATE_TO_DIV(input_rate, output_rate) \ - ((input_rate) / (output_rate) - 1); - #define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1)) #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\ @@ -239,7 +236,7 @@ static ulong rockchip_mmc_get_clk(struct rk322x_cru *cru, uint clk_general_rate, } src_rate = mux == EMMC_SEL_24M ? OSC_HZ : clk_general_rate; - return DIV_TO_RATE(src_rate, div); + return DIV_TO_RATE(src_rate, div) / 2; } static ulong rockchip_mmc_set_clk(struct rk322x_cru *cru, uint clk_general_rate, @@ -250,11 +247,12 @@ static ulong rockchip_mmc_set_clk(struct rk322x_cru *cru, uint clk_general_rate, debug("%s: clk_general_rate=%u\n", __func__, clk_general_rate); - /* mmc clock auto divide 2 in internal */ - src_clk_div = (clk_general_rate / 2 + freq - 1) / freq; + /* mmc clock defaulg div 2 internal, need provide double in cru */ + src_clk_div = DIV_ROUND_UP(clk_general_rate / 2, freq); - if (src_clk_div > 0x7f) { - src_clk_div = (OSC_HZ / 2 + freq - 1) / freq; + if (src_clk_div > 128) { + src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, freq); + assert(src_clk_div - 1 < 128); mux = EMMC_SEL_24M; } else { mux = EMMC_SEL_GPLL; |