[U-Boot] [UBOOT PATCH v3 1/7] mmc: sdhci: Add support for disabling clock

[Siva Durga Prasad Paladugu]

From: Siva Durga Prasad Paladugu <sivadur at xilinx.com>

This patch adds support to disable clock if clk_disable
was set and then enable or set clock if the clock was changed
or clock was disabled when clock needs to be enabled.

Signed-off-by: Siva Durga Prasad Paladugu <sivadur at xilinx.com>
---
Changes in v3:
- Removed clk_disabled in sdhci_host structure
---
 drivers/mmc/sdhci.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index d31793a..73d17d7 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -440,6 +440,9 @@ static int sdhci_set_ios(struct mmc *mmc)
        if (mmc->clock != host->clock)
                sdhci_set_clock(mmc, mmc->clock);

+       if (mmc->clk_disable)
+               sdhci_set_clock(mmc, 0);
+
        /* Set bus width */
        ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
        if (mmc->bus_width == 8) {
--
2.7.4

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