diff options
Diffstat (limited to 'package/boot/uboot-mediatek/patches/000-mtk-10-mmc-mtk-sd-increase-the-minimum-bus-frequency.patch')
| -rw-r--r-- | package/boot/uboot-mediatek/patches/000-mtk-10-mmc-mtk-sd-increase-the-minimum-bus-frequency.patch | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/package/boot/uboot-mediatek/patches/000-mtk-10-mmc-mtk-sd-increase-the-minimum-bus-frequency.patch b/package/boot/uboot-mediatek/patches/000-mtk-10-mmc-mtk-sd-increase-the-minimum-bus-frequency.patch index c568ab99e1..8f14a98ff1 100644 --- a/package/boot/uboot-mediatek/patches/000-mtk-10-mmc-mtk-sd-increase-the-minimum-bus-frequency.patch +++ b/package/boot/uboot-mediatek/patches/000-mtk-10-mmc-mtk-sd-increase-the-minimum-bus-frequency.patch @@ -1,7 +1,7 @@ -From ed880b7572e1135e3bd8382d4670a375f7d9c91b Mon Sep 17 00:00:00 2001 +From 1d4fcea788e579934a1ad0a90cecd6e1761127d1 Mon Sep 17 00:00:00 2001 From: Weijie Gao <weijie.gao@mediatek.com> Date: Tue, 2 Mar 2021 15:56:17 +0800 -Subject: [PATCH 10/21] mmc: mtk-sd: increase the minimum bus frequency +Subject: [PATCH 03/12] mmc: mtk-sd: increase the minimum bus frequency With a 48MHz input clock, the lowest bus frequency can be as low as 48000000 / (4 * 4095) = 2930Hz. Such an extremely low frequency will cause @@ -12,27 +12,17 @@ issue without any side effects. Signed-off-by: Weijie Gao <weijie.gao@mediatek.com> --- - drivers/mmc/mtk-sd.c | 5 +++++ - 1 file changed, 5 insertions(+) + drivers/mmc/mtk-sd.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/mtk-sd.c +++ b/drivers/mmc/mtk-sd.c -@@ -232,6 +232,8 @@ +@@ -232,7 +232,7 @@ #define SCLK_CYCLES_SHIFT 20 +-#define MIN_BUS_CLK 200000 +#define MIN_BUS_CLK 260000 -+ + #define CMD_INTS_MASK \ (MSDC_INT_CMDRDY | MSDC_INT_RSPCRCERR | MSDC_INT_CMDTMO) - -@@ -1639,6 +1641,9 @@ static int msdc_drv_probe(struct udevice - else - cfg->f_min = host->src_clk_freq / (4 * 4095); - -+ if (cfg->f_min < MIN_BUS_CLK) -+ cfg->f_min = MIN_BUS_CLK; -+ - if (cfg->f_max < cfg->f_min || cfg->f_max > host->src_clk_freq) - cfg->f_max = host->src_clk_freq; - |