mmc: sdhci: fix ctrl_2 on super-speed selection

This patch fixes the HC ctrl_2 programming where, in case of
SDR104 and HS200, we have to write 100b in the the UHS Mode
bits. We wrote 101b that is reserved from Arasan Specs.

Reported-by: Youssef Triki <youssef.triki@st.com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 9bd6ab2..3ad3973 100644 (file)
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1543,16 +1543,15 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
                        ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
                        /* Select Bus Speed Mode for host */
                        ctrl_2 &= ~SDHCI_CTRL_UHS_MASK;
-                       if (ios->timing == MMC_TIMING_MMC_HS200)
-                               ctrl_2 |= SDHCI_CTRL_HS_SDR200;
+                       if ((ios->timing == MMC_TIMING_MMC_HS200) ||
+                           (ios->timing == MMC_TIMING_UHS_SDR104))
+                               ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
                        else if (ios->timing == MMC_TIMING_UHS_SDR12)
                                ctrl_2 |= SDHCI_CTRL_UHS_SDR12;
                        else if (ios->timing == MMC_TIMING_UHS_SDR25)
                                ctrl_2 |= SDHCI_CTRL_UHS_SDR25;
                        else if (ios->timing == MMC_TIMING_UHS_SDR50)
                                ctrl_2 |= SDHCI_CTRL_UHS_SDR50;
-                       else if (ios->timing == MMC_TIMING_UHS_SDR104)
-                               ctrl_2 |= SDHCI_CTRL_UHS_SDR104;
                        else if (ios->timing == MMC_TIMING_UHS_DDR50)
                                ctrl_2 |= SDHCI_CTRL_UHS_DDR50;
                        sdhci_writew(host, ctrl_2, SDHCI_HOST_CONTROL2);