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Subject[RFT PATCH 3/3] mmc: sdhci-of-arasan: Fix Command Queuing enable handling
Date
There is a need to dump data from the buffer before enabling command
queuing because of leftover data from tuning. Reset the data lines to
fix this at the source.

Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
---
drivers/mmc/host/sdhci-of-arasan.c | 21 ++++-----------------
1 file changed, 4 insertions(+), 17 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index e49b44b4d82e..1495ae72b902 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -376,22 +376,8 @@ static void sdhci_arasan_dumpregs(struct mmc_host *mmc)
sdhci_dumpregs(mmc_priv(mmc));
}

-static void sdhci_arasan_cqe_enable(struct mmc_host *mmc)
-{
- struct sdhci_host *host = mmc_priv(mmc);
- u32 reg;
-
- reg = sdhci_readl(host, SDHCI_PRESENT_STATE);
- while (reg & SDHCI_DATA_AVAILABLE) {
- sdhci_readl(host, SDHCI_BUFFER);
- reg = sdhci_readl(host, SDHCI_PRESENT_STATE);
- }
-
- sdhci_cqe_enable(mmc);
-}
-
static const struct cqhci_host_ops sdhci_arasan_cqhci_ops = {
- .enable = sdhci_arasan_cqe_enable,
+ .enable = sdhci_cqe_enable,
.disable = sdhci_cqe_disable,
.dumpregs = sdhci_arasan_dumpregs,
};
@@ -410,8 +396,9 @@ static const struct sdhci_ops sdhci_arasan_cqe_ops = {
static const struct sdhci_pltfm_data sdhci_arasan_cqe_pdata = {
.ops = &sdhci_arasan_cqe_ops,
.quirks = SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
- .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
- SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN,
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
+ SDHCI_QUIRK2_RESET_DATA_POST_TUNING |
+ SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN,
};

static struct sdhci_arasan_of_data sdhci_arasan_rk3399_data = {
--
2.19.2
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