In sdhci_s3c_set_clock function of S3C SDHCI controller driver, when a new
clock source is selected, the timeout clock is recalculated. This patch
modifies the calculation of the timeout clock based on the
SDHCI_TIMEOUT_CLK_UNIT capability which is determined from the
SDHCI_CAPABILITIES register.
Signed-off-by: Thomas Abraham <thomas.ab@xxxxxxxxxxx>
---
drivers/mmc/host/sdhci-s3c.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 50997d2..ab4641c 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -181,6 +181,7 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
if (ourhost->cur_clk != best_src) {
struct clk *clk = ourhost->clk_bus[best_src];
+ unsigned int caps;
/* turn clock off to card before changing clock source */
writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
@@ -188,7 +189,10 @@ static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
ourhost->cur_clk = best_src;
host->max_clk = clk_get_rate(clk);
host->timeout_clk = sdhci_s3c_get_timeout_clk(host);
-
+ caps = readl(host->ioaddr + SDHCI_CAPABILITIES);
+ if (caps & SDHCI_TIMEOUT_CLK_UNIT)
+ host->timeout_clk *= 1000;
+
ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
ctrl |= best_src << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
--
1.6.6.rc2
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