[U-Boot] [PATCH 2/2] mmc: zynq_sdhci: Added qurik to disable high speed

[Michal Simek]

From: Siva Durga Prasad Paladugu <siva.durga.paladugu at xilinx.com>

Add quirk to disable high speed incase the high
speed was broken.This solves the issue where the
the controller is used in High Speed Mode and the
the hold time requirement for the JEDEC/MMC 4.41
specification is NOT met.
This timing issue is not on all boards and hence
provided config option to enable it when required.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
Signed-off-by: Emil Lenchak <emill at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 drivers/mmc/zynq_sdhci.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c
index f21ea524af9f..039ec16e91fe 100644
--- a/drivers/mmc/zynq_sdhci.c
+++ b/drivers/mmc/zynq_sdhci.c
@@ -24,6 +24,11 @@ static int arasan_sdhci_probe(struct udevice *dev)
 
 	host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD |
 		       SDHCI_QUIRK_BROKEN_R1B;
+
+#ifdef CONFIG_ZYNQ_HISPD_BROKEN
+	host->quirks |= SDHCI_QUIRK_NO_HISPD_BIT;
+#endif
+
 	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 
 	add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ,
-- 
1.9.1