[PATCH 2/2] mmc: sdhci_am654: Add QUIRK2_TI_HISPD_BIT

From: Faiz Abbas
Date: Fri Mar 29 2019 - 10:22:30 EST


According to the AM654x Data Manual[1], the setup timing in lower speed
modes can only be met if the controller uses a falling edge data launch.

To ensure this, the HIGH_SPEED_ENA (HOST_CONTROL[2]) bit should be
cleared in default speed, SD high speed, MMC high speed, SDR12 and SDR25
speed modes.

Enable the SDHCI_QUIRK2_TI_HISPD_BIT quirk to facilitate this.

[1] http://www.ti.com/lit/gpn/am6546 Section 5.10.5.16.1

Signed-off-by: Faiz Abbas <faiz_abbas@xxxxxx>
---
drivers/mmc/host/sdhci_am654.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
index eea183e90f1b..739a91767d5a 100644
--- a/drivers/mmc/host/sdhci_am654.c
+++ b/drivers/mmc/host/sdhci_am654.c
@@ -172,7 +172,8 @@ static const struct sdhci_pltfm_data sdhci_am654_pdata = {
.ops = &sdhci_am654_ops,
.quirks = SDHCI_QUIRK_INVERTED_WRITE_PROTECT |
SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
- .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+ .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
+ SDHCI_QUIRK2_TI_HISPD_BIT,
};

static int sdhci_am654_init(struct sdhci_host *host)
--
2.19.2