linux-kernel - [PATCH 2/3] mmc: tegra: fix eMMC DDR52 mode

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Date:   Thu, 12 Jul 2018 09:39:03 +0200
From:   Stefan Agner <stefan@...er.ch>
To:     adrian.hunter@...el.com, ulf.hansson@...aro.org
Cc:     thierry.reding@...il.com, jonathanh@...dia.com,
        marcel.ziswiler@...adex.com, linux-mmc@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        Stefan Agner <stefan@...er.ch>
Subject: [PATCH 2/3] mmc: tegra: fix eMMC DDR52 mode

Make sure the clock is doubled when using eMMC DDR52 mode.

Signed-off-by: Stefan Agner <stefan@...er.ch>
---
 drivers/mmc/host/sdhci-tegra.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
index 137df06b9b6e..888a1ad511db 100644
--- a/drivers/mmc/host/sdhci-tegra.c
+++ b/drivers/mmc/host/sdhci-tegra.c
@@ -228,7 +228,8 @@ static void tegra_sdhci_set_uhs_signaling(struct sdhci_host *host,
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host);
 
-	if (timing == MMC_TIMING_UHS_DDR50)
+	if (timing == MMC_TIMING_UHS_DDR50 ||
+	    timing == MMC_TIMING_MMC_DDR52)
 		tegra_host->ddr_signaling = true;
 
 	sdhci_set_uhs_signaling(host, timing);
-- 
2.18.0