[PATCH v3 21/23] mmc: mtk-sd: assign plat->cfg.f_max with a correct value

Weijie Gao weijie.gao at mediatek.com
Mon Nov 9 09:28:11 CET 2020


Currently this driver does not set the value of plat->cfg.f_max, which
results in that MMC framework will always run at the lowest frequency.

This patch sets plat->cfg.f_max to the maximum allowed frequency, which is
half of the source clock frequency.

Signed-off-by: Weijie Gao <weijie.gao at mediatek.com>
---
v3 changes: new
---
 drivers/mmc/mtk-sd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/mmc/mtk-sd.c b/drivers/mmc/mtk-sd.c
index f4ff8822f2..5e24943212 100644
--- a/drivers/mmc/mtk-sd.c
+++ b/drivers/mmc/mtk-sd.c
@@ -1639,6 +1639,8 @@ static int msdc_drv_probe(struct udevice *dev)
 	else
 		cfg->f_min = host->src_clk_freq / (4 * 4095);
 
+	cfg->f_max = host->src_clk_freq / 2;
+
 	cfg->b_max = 1024;
 	cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
 
-- 
2.17.1


More information about the U-Boot mailing list