From: Tanmay Kathpalia <tanmay.kathpalia@altera.com>
Date: Wed, 3 Dec 2025 12:21:33 +0000 (-0800)
Subject: mmc: sdhci-cadence: Use max-frequency property from device tree
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1e40e419aeb25f8d9a3f6872b5dcd05a2ed2b06e;p=thirdparty%2Fu-boot.git

mmc: sdhci-cadence: Use max-frequency property from device tree

When f_max parameter is 0 in sdhci_setup_cfg(), the function defaults
to using the maximum frequency from host controller capabilities register
instead of the max-frequency property parsed from device tree.

The max-frequency property from device tree is parsed by mmc_of_parse()
and stored in plat->cfg.f_max, but sdhci_setup_cfg() was being called
with f_max=0, causing it to ignore the device tree value and use the
host capabilities register value instead.

Fix this by passing plat->cfg.f_max to sdhci_setup_cfg() to ensure
the device tree specified maximum frequency is respected over the
hardware default.

Signed-off-by: Tanmay Kathpalia <tanmay.kathpalia@altera.com>
Reviewed-by: Balsundar Ponnusamy <balsundar.ponnusamy@altera.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

diff --git a/drivers/mmc/sdhci-cadence.c b/drivers/mmc/sdhci-cadence.c
index 6c9d24fe5f7..b92b3df3ed9 100644
--- a/drivers/mmc/sdhci-cadence.c
+++ b/drivers/mmc/sdhci-cadence.c
@@ -253,7 +253,7 @@ static int sdhci_cdns_probe(struct udevice *dev)
 
 	host->mmc = &plat->mmc;
 	host->mmc->dev = dev;
-	ret = sdhci_setup_cfg(&plat->cfg, host, 0, 0);
+	ret = sdhci_setup_cfg(&plat->cfg, host, plat->cfg.f_max, 0);
 	if (ret)
 		return ret;