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authorTakeshi Saito2022-07-20 09:29:01 +0200
committerUlf Hansson2022-07-21 18:03:41 +0200
commit00e8c11c137b2e4b2bf54dc9881cf32e3441ddb4 (patch)
treeef252f0ce26489f4e9ddb916feb49c2d0b44514b
parent7ee480795e41db314f2c445c65ed854a5d6e8e32 (diff)
mmc: renesas_sdhi: newer SoCs don't need manual tap correction
The newest Gen3 SoCs and Gen4 SoCs do not need manual tap correction with HS400 anymore. So, instead of checking the SDHI version, add a quirk flag and set manual tap correction only for affected SoCs. Signed-off-by: Takeshi Saito <takeshi.saito.xv@renesas.com> [wsa: rebased, renamed the quirk variable, removed stale comment] Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20220720072901.1266-1-wsa+renesas@sang-engineering.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
-rw-r--r--drivers/mmc/host/renesas_sdhi.h1
-rw-r--r--drivers/mmc/host/renesas_sdhi_core.c5
-rw-r--r--drivers/mmc/host/renesas_sdhi_internal_dmac.c6
3 files changed, 9 insertions, 3 deletions
diff --git a/drivers/mmc/host/renesas_sdhi.h b/drivers/mmc/host/renesas_sdhi.h
index 1a1e3e020a8c..c4abfee1ebae 100644
--- a/drivers/mmc/host/renesas_sdhi.h
+++ b/drivers/mmc/host/renesas_sdhi.h
@@ -43,6 +43,7 @@ struct renesas_sdhi_quirks {
bool hs400_4taps;
bool fixed_addr_mode;
bool dma_one_rx_only;
+ bool manual_tap_correction;
u32 hs400_bad_taps;
const u8 (*hs400_calib_table)[SDHI_CALIB_TABLE_MAX];
};
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 55f7b27c3de7..6edbf5c161ab 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -380,8 +380,7 @@ static void renesas_sdhi_hs400_complete(struct mmc_host *mmc)
sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_DT2FF,
priv->scc_tappos_hs400);
- /* Gen3 can't do automatic tap correction with HS400, so disable it */
- if (sd_ctrl_read16(host, CTL_VERSION) == SDHI_VER_GEN3_SDMMC)
+ if (priv->quirks && priv->quirks->manual_tap_correction)
sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL,
~SH_MOBILE_SDHI_SCC_RVSCNTL_RVSEN &
sd_scc_read32(host, priv, SH_MOBILE_SDHI_SCC_RVSCNTL));
@@ -718,7 +717,7 @@ static bool renesas_sdhi_manual_correction(struct tmio_mmc_host *host, bool use_
sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSREQ, 0);
/* Change TAP position according to correction status */
- if (sd_ctrl_read16(host, CTL_VERSION) == SDHI_VER_GEN3_SDMMC &&
+ if (priv->quirks && priv->quirks->manual_tap_correction &&
host->mmc->ios.timing == MMC_TIMING_MMC_HS400) {
u32 bad_taps = priv->quirks ? priv->quirks->hs400_bad_taps : 0;
/*
diff --git a/drivers/mmc/host/renesas_sdhi_internal_dmac.c b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
index 0ccdbe3010ee..42937596c4c4 100644
--- a/drivers/mmc/host/renesas_sdhi_internal_dmac.c
+++ b/drivers/mmc/host/renesas_sdhi_internal_dmac.c
@@ -170,6 +170,7 @@ static const struct renesas_sdhi_quirks sdhi_quirks_4tap_nohs400_one_rx = {
static const struct renesas_sdhi_quirks sdhi_quirks_4tap = {
.hs400_4taps = true,
.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
+ .manual_tap_correction = true,
};
static const struct renesas_sdhi_quirks sdhi_quirks_nohs400 = {
@@ -182,25 +183,30 @@ static const struct renesas_sdhi_quirks sdhi_quirks_fixed_addr = {
static const struct renesas_sdhi_quirks sdhi_quirks_bad_taps1357 = {
.hs400_bad_taps = BIT(1) | BIT(3) | BIT(5) | BIT(7),
+ .manual_tap_correction = true,
};
static const struct renesas_sdhi_quirks sdhi_quirks_bad_taps2367 = {
.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
+ .manual_tap_correction = true,
};
static const struct renesas_sdhi_quirks sdhi_quirks_r8a7796_es13 = {
.hs400_4taps = true,
.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
.hs400_calib_table = r8a7796_es13_calib_table,
+ .manual_tap_correction = true,
};
static const struct renesas_sdhi_quirks sdhi_quirks_r8a77965 = {
.hs400_bad_taps = BIT(2) | BIT(3) | BIT(6) | BIT(7),
.hs400_calib_table = r8a77965_calib_table,
+ .manual_tap_correction = true,
};
static const struct renesas_sdhi_quirks sdhi_quirks_r8a77990 = {
.hs400_calib_table = r8a77990_calib_table,
+ .manual_tap_correction = true,
};
/*