summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorWenchao Chen <wenchao.chen@unisoc.com>2022-10-11 18:49:35 +0800
committerUlf Hansson <ulf.hansson@linaro.org>2022-10-11 15:48:51 +0200
commit6e141772e6465f937458b35ddcfd0a981b6f5280 (patch)
tree5ca0ffd30fa85fc75ddf66a40403c52fb9bdf7f8 /drivers
parentb78870e7f41534cc719c295d1f8809aca93aeeab (diff)
mmc: sdhci-sprd: Fix minimum clock limit
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/host/sdhci-sprd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c
index 46c55ab4884c..b92a408f138d 100644
--- a/drivers/mmc/host/sdhci-sprd.c
+++ b/drivers/mmc/host/sdhci-sprd.c
@@ -309,7 +309,7 @@ static unsigned int sdhci_sprd_get_max_clock(struct sdhci_host *host)
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,