ChuanN-sudo/u-boot
1
0
Fork 0
forked from OERV-BSP/u-boot
Code Pull Requests Activity

mmc: dw_mmc: do not skip dwmci_setup_bus() for same non-zero clock frequency

Browse Source 
In dwmci_setup_bus(), if the requested frequency is equal to the current
frequency, the function is returned, assuming no changes are required in
associated registers.

On certain SD cards, skipping in such situations may result in a timeout
errors during MMC initialization. Due to the lack of documentation, the
cause is unknown, but removing said check seems to fix the issue.

Signed-off-by: Kaustabh Chakraborty <kauschluss@disroot.org>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Kaustabh Chakraborty
2025-10-17 20:54:07 +05:30
committed by Peng Fan
parent 02d7aa8821
commit 3a5b187b5c
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mmc/dw_mmc.c
View File

@@ -554,7 +554,7 @@ static int dwmci_setup_bus(struct dwmci_host *host, u32 freq)
unsigned long sclk;
int ret;
if (freq == host->clock || freq == 0)
if (!freq)
return 0;
/*