[U-Boot] [Patch V2] mmc: mv_sdhci: Fix host version read for Armada100

[Ajay Bhargav]

sdhci_readw does not work for host version read in Armada100 series
SoCs. This patch fix this issue by making a sdhci_readl call to get host
version.

Signed-off-by: Ajay Bhargav <ajay.bhargav at einfochips.com>
---
Changes for v2:
	- Added quirk instead of #define (suggested by Marek)

 drivers/mmc/mv_sdhci.c |    5 ++++-
 include/sdhci.h        |    1 +
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
index f92caeb..c9b7079 100644
--- a/drivers/mmc/mv_sdhci.c
+++ b/drivers/mmc/mv_sdhci.c
@@ -48,7 +48,10 @@ int mv_sdh_init(u32 regbase, u32 max_clk, u32 min_clk, u32 quirks)
 		mv_ops.write_b = mv_sdhci_writeb;
 	host->ops = &mv_ops;
 #endif
-	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
+	if (quirks & SDHCI_QUIRK_REG32_RW)
+		host->version = sdhci_readl(host, SDHCI_HOST_VERSION - 2) >> 16;
+	else
+		host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 	add_sdhci(host, max_clk, min_clk);
 	return 0;
 }
diff --git a/include/sdhci.h b/include/sdhci.h
index 0690938..800f9d9 100644
--- a/include/sdhci.h
+++ b/include/sdhci.h
@@ -215,6 +215,7 @@
  * quirks
  */
 #define SDHCI_QUIRK_32BIT_DMA_ADDR	(1 << 0)
+#define SDHCI_QUIRK_REG32_RW		(1 << 1)
 
 /* to make gcc happy */
 struct sdhci_host;
-- 
1.7.7.2