From 30e76b755b2a52e74bf916716a83deaf775664bb Mon Sep 17 00:00:00 2001
From: Daniel Golle <daniel@makrotopia.org>
Date: Mon, 15 Mar 2021 15:31:11 +0000
Subject: [PATCH] mmc: mtk-sd: don't ignore max-frequency from device tree
commit e58e68d9 ("mmc: mtk-sd: assign plat->cfg.f_max with a correct value")
wrongly assumed that plat->cfg.f_max is always unset at the time
mscd_drv_probe() is run. This is not true in case max-frequency being
defined in device tree, as it is then already set by mmc_of_parse()
in msdc_of_to_plat().
Only set plat->cfg.f_max to the default maximum value in case it is
not already set to a sane value.
Fixes: e58e68d93e ("mmc: mtk-sd: assign plat->cfg.f_max with a correct value")
Cc: Stefan Roese <sr@denx.de>
Cc: Weijie Gao <weijie.gao@mediatek.com>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/mmc/mtk-sd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/mtk-sd.c b/drivers/mmc/mtk-sd.c
index 3b9c12266a..48a764be82 100644
--- a/drivers/mmc/mtk-sd.c
+++ b/drivers/mmc/mtk-sd.c
@@ -1639,7 +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;
+ if (cfg->f_max < cfg->f_min || cfg->f_max > host->src_clk_freq)
+ cfg->f_max = host->src_clk_freq;
cfg->b_max = 1024;
cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
--
2.39.5