linux-kernel - [PATCH 4.9 086/171] Revert "mmc: sdhci: Fix incorrect switch to HS mode"

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Message-Id: <20200102220558.950964515@linuxfoundation.org>
Date:   Thu,  2 Jan 2020 23:06:57 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Faiz Abbas <faiz_abbas@...com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 4.9 086/171] Revert "mmc: sdhci: Fix incorrect switch to HS mode"

From: Faiz Abbas <faiz_abbas@...com>

commit 07bcc411567cb96f9d1fc84fff8d387118a2920d upstream.

This reverts commit c894e33ddc1910e14d6f2a2016f60ab613fd8b37.

This commit aims to treat SD High speed and SDR25 as the same while
setting UHS Timings in HOST_CONTROL2 which leads to failures with some
SD cards in AM65x. Revert this commit.

The issue this commit was trying to fix can be implemented in a platform
specific callback instead of common sdhci code.

Cc: <stable@...r.kernel.org>
Signed-off-by: Faiz Abbas <faiz_abbas@...com>
Acked-by: Adrian Hunter <adrian.hunter@...el.com>
Link: https://lore.kernel.org/r/20191128110422.25917-1-faiz_abbas@ti.com
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/host/sdhci.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1557,9 +1557,7 @@ void sdhci_set_uhs_signaling(struct sdhc
 		ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
 	else if (timing == MMC_TIMING_UHS_SDR12)
 		ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
-	else if (timing == MMC_TIMING_SD_HS ||
-		 timing == MMC_TIMING_MMC_HS ||
-		 timing == MMC_TIMING_UHS_SDR25)
+	else if (timing == MMC_TIMING_UHS_SDR25)
 		ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
 	else if (timing == MMC_TIMING_UHS_SDR50)
 		ctrl_2 |= SDHCI_CTRL_UHS_SDR50;