Hi Andy,
On 15 March 2017 at 12:25, Andy Shevchenko andriy.shevchenko@linux.intel.com wrote:
On some systems SDHCI controllers may be powered off and it's required to bring them on before accessing.
SDHCI generic driver currently lacks any mean of doing it. Call the same board_power_mmc_init() at sdhci_init() stage.
Signed-off-by: Andy Shevchenko andriy.shevchenko@linux.intel.com
drivers/mmc/sdhci.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c index 93cefd89cd..54a7e379ff 100644 --- a/drivers/mmc/sdhci.c +++ b/drivers/mmc/sdhci.c @@ -469,6 +469,8 @@ static int sdhci_init(struct mmc *mmc) { struct sdhci_host *host = mmc->priv;
board_mmc_power_init();
You should be using driver model for this (CONFIG_DM_MMC*). So either get the power supply from the device tree and enable it, or do this in the board code.
sdhci_reset(host, SDHCI_RESET_ALL); if ((host->quirks & SDHCI_QUIRK_32BIT_DMA_ADDR) && !aligned_buffer) {-- 2.11.0
Regards, Simon