[v3,05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v

Message ID 20180307132020.30951-6-kishon@ti.com
State New
Headers show
Series
  • mmc: sdhci-omap: Add UHS/HS200 mode support
Related show

Commit Message

Kishon Vijay Abraham I March 7, 2018, 1:20 p.m.
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 <kishon@ti.com>

---
 drivers/mmc/host/sdhci.c | 1 +
 1 file changed, 1 insertion(+)

-- 
2.11.0

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Patch

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. */