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@xilinx.com --- drivers/mmc/sdhci.c | 7 ++++++- include/sdhci.h | 1 + 2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index e2ddf5d..2bd721f 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -437,8 +437,13 @@ static int sdhci_set_ios(struct mmc *mmc) if (host->ops && host->ops->set_control_reg) host->ops->set_control_reg(host);
- if (mmc->clock != host->clock) + if ((mmc->clock != host->clock || host->clk_disabled) && + !mmc->clk_disable) sdhci_set_clock(mmc, mmc->clock); + if (mmc->clk_disable) { + sdhci_set_clock(mmc, 0); + host->clk_disabled = true; + }
/* Set bus width */ ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL); diff --git a/include/sdhci.h b/include/sdhci.h index 7e84012..4fc4140 100644 --- a/include/sdhci.h +++ b/include/sdhci.h @@ -259,6 +259,7 @@ struct sdhci_host { uint voltages;
struct mmc_config cfg; + bool clk_disabled; };
#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS