From 98712d4f7f7e89da39976823c10793add20ee65c Mon Sep 17 00:00:00 2001 From: Wenchao Chen Date: Tue, 11 Oct 2022 18:49:35 +0800 Subject: [PATCH] mmc: sdhci-sprd: Fix minimum clock limit commit 51c43aea24334e7a509b6d202e1721204b738d48 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 Acked-by: Adrian Hunter Fixes: 4e150946b509 ("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 Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/host/sdhci-sprd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci-sprd.c b/drivers/mmc/host/sdhci-sprd.c index a999d2089d3de..4e2d6a25f200d 100644 --- 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_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, -- 2.39.5