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

Message ID 50fbaa30d47e947333e5015470f3b8bf9e84fed0.1452778699.git.michal.simek@xilinx.com
State Accepted
Commit b21561463885d4c2f40a133dae1ff00ef3f0175f
Delegated to: Michal Simek
Headers show

Commit Message

Michal Simek Jan. 14, 2016, 1:38 p.m. UTC 
From: Siva Durga Prasad Paladugu <siva.durga.paladugu@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@xilinx.com>
Signed-off-by: Emil Lenchak <emill@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

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

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,