[PATCH v3 05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v
From: Kishon Vijay Abraham I <hidden>
Date: 2018-03-07 13:21:31
Also in:
linux-devicetree, linux-mmc, linux-omap, lkml
Subsystem:
multimedia card (mmc), secure digital (sd) and sdio subsystem, secure digital host controller interface (sdhci) driver, the rest · Maintainers:
Ulf Hansson, Adrian Hunter, Linus Torvalds
Though MMC controller can indicate HS200 mode capability (by using "mmc-hs200-1_8v" dt property), if the IO lines in the board is connected to 3.3v supply, HS200 mode cannot be supported. Such boards have "no-1-8-v" property in their dts file. Disable HS200 mode for boards which have "no-1-8-v" set. Signed-off-by: Kishon Vijay Abraham I <redacted> --- drivers/mmc/host/sdhci.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 2ededa7f43df..aa8b5ca0d1b0 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c@@ -3672,6 +3672,7 @@ int sdhci_setup_host(struct sdhci_host *host) if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) { host->caps1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50); + mmc->caps2 &= ~MMC_CAP2_HS200; } /* Any UHS-I mode in caps implies SDR12 and SDR25 support. */
--
2.11.0