From: Haibo Chen Date: Mon, 15 Aug 2016 08:31:33 +0000 (+0800) Subject: mmc: sdhci-esdhc-imx: correct the max timeout count X-Git-Tag: v4.9-rc1~124^2~52 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2fb0b02b79d1c5ca88e223750a2eb9b0a3679bb0;p=platform%2Fkernel%2Flinux-amlogic.git mmc: sdhci-esdhc-imx: correct the max timeout count i.MX USDHC Reference Manual has a mistake, for the register SYS_CTRL, the DTOCV(bit 19~16) means the data timeout counter value. When DTOCV is set to 0xF, it means SDCLK << 29, not SDCLK << 28. Signed-off-by: Haibo Chen Acked-by: Dong Aisheng Acked-by: Adrian Hunter Signed-off-by: Ulf Hansson --- diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 437c448..1f54fd8 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -929,7 +929,8 @@ static unsigned int esdhc_get_max_timeout_count(struct sdhci_host *host) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = sdhci_pltfm_priv(pltfm_host); - return esdhc_is_usdhc(imx_data) ? 1 << 28 : 1 << 27; + /* Doc Errata: the uSDHC actual maximum timeout count is 1 << 29 */ + return esdhc_is_usdhc(imx_data) ? 1 << 29 : 1 << 27; } static void esdhc_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)