mmc: mv_sdhci: Fix host version read for Armada100
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@einfochips.com>
diff --git a/drivers/mmc/mv_sdhci.c b/drivers/mmc/mv_sdhci.c
index f92caeb..1501974 100644
--- a/drivers/mmc/mv_sdhci.c
+++ b/drivers/mmc/mv_sdhci.c
@@ -48,7 +48,10 @@
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;