From: Kevin Liu <kl...@marvell.com>
The clock rate set to the sdh controller may not exactly as requested
by the mmc core, this patch make the clock rate saved in the mmc_ios
and sdhci_host updated with the actual setting as in the controller. Thus
"/sys/kernel/debug/mmcx/ios" and card detect prints can show the correct
clock rate.
Signed-off-by: Bin Wang <b...@marvell.com>
Signed-off-by: Kevin Liu <kl...@marvell.com>
---
drivers/mmc/host/sdhci.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 32dd505..4b5631e 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1199,7 +1199,10 @@ static void sdhci_set_clock(struct sdhci_host *host,
unsigned int clock)
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
out:
- host->clock = clock;
+ if (real_div)
+ host->clock = host->mmc->actual_clock;
+ else
+ host->clock = clock;
}
static int sdhci_set_power(struct sdhci_host *host, unsigned short power)
@@ -1375,6 +1378,7 @@ static void sdhci_do_set_ios(struct sdhci_host *host,
struct mmc_ios *ios)
}
sdhci_set_clock(host, ios->clock);
+ ios->clock = host->clock;
if (ios->power_mode == MMC_POWER_OFF)
vdd_bit = sdhci_set_power(host, -1);
--
1.7.0.4
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