lkml.org 
[lkml]   [2018]   [Mar]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 05/11] mmc: sdhci: Disable HS200 mode if controller can't support 1.8v
Date
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(+)

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
\
 
 \ /
  Last update: 2018-03-07 14:22    [W:0.177 / U:3.268 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site