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authorWolfram Sang <wsa+renesas@sang-engineering.com>2022-04-04 14:49:02 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2022-04-07 13:48:19 +0300
commit03e59b1e2f56245163b14c69e0a830c24b1a3a47 (patch)
treee76f686a4a34cd5aff92a9cded2747e76c61df9a /drivers
parent46d4820f949a3030b19ee482c68a50b06dd27590 (diff)
downloadlinux-03e59b1e2f56245163b14c69e0a830c24b1a3a47.tar.xz
mmc: renesas_sdhi: don't overwrite TAP settings when HS400 tuning is complete
When HS400 tuning is complete and HS400 is going to be activated, we have to keep the current number of TAPs and should not overwrite them with a hardcoded value. This was probably a copy&paste mistake when upporting HS400 support from the BSP. Fixes: 26eb2607fa28 ("mmc: renesas_sdhi: add eMMC HS400 mode support") Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20220404114902.12175-1-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/host/renesas_sdhi_core.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 2a4d314aa027..ddb5ca2f559e 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -396,10 +396,10 @@ static void renesas_sdhi_hs400_complete(struct mmc_host *mmc)
SH_MOBILE_SDHI_SCC_TMPPORT2_HS400OSEL) |
sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_TMPPORT2));
- /* Set the sampling clock selection range of HS400 mode */
sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_DTCNTL,
SH_MOBILE_SDHI_SCC_DTCNTL_TAPEN |
- 0x4 << SH_MOBILE_SDHI_SCC_DTCNTL_TAPNUM_SHIFT);
+ sd_scc_read32(host, priv,
+ SH_MOBILE_SDHI_SCC_DTCNTL));
/* Avoid bad TAP */
if (bad_taps & BIT(priv->tap_set)) {