From: Wenchao Chen wenchao.chen@unisoc.com
commit 6e141772e6465f937458b35ddcfd0a981b6f5280 upstream.
The Spreadtrum controller supports 100KHz minimal clock rate, which means that the current value 400KHz is wrong.
Unfortunately this has also lead to fail to initialize some cards, which are allowed to require 100KHz to work. So, let's fix the problem by changing the minimal supported clock rate to 100KHz.
Signed-off-by: Wenchao Chen wenchao.chen@unisoc.com Acked-by: Adrian Hunter adrian.hunter@intel.com Fixes: fb8bd90f83c4 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20221011104935.10980-1-wenchao.chen666@gmail.com [Ulf: Clarified to commit-message] Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/mmc/host/sdhci-sprd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mmc/host/sdhci-sprd.c +++ b/drivers/mmc/host/sdhci-sprd.c @@ -295,7 +295,7 @@ static unsigned int sdhci_sprd_get_max_c
static unsigned int sdhci_sprd_get_min_clock(struct sdhci_host *host) { - return 400000; + return 100000; }
static void sdhci_sprd_set_uhs_signaling(struct sdhci_host *host,