From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Shawn Lin Subject: [PATCH v3 1/2] Documentation: mmc: add optional cd-delay-ms property Date: Fri, 20 Apr 2018 14:59:14 +0800 Message-Id: <1524207555-165403-1-git-send-email-shawn.lin@rock-chips.com> To: Ulf Hansson Cc: Rob Herring , Linus Walleij , linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, Shawn Lin List-ID: slot-gpio uses a fixed delay, 200ms, before detecting card after the card is inserted. 200ms doesn't work for some platforms, so some host drivers added their own properties for parsing that from DT, for instance, dw_mmc and pxamci. That being said, it should also be tunable when using cd-gpios. Signed-off-by: Shawn Lin --- Changes in v3: - fix misleading typo in commit msg Changes in v2: None Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 467cd7b..215b9a2 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -19,6 +19,8 @@ Optional properties: - wp-gpios: Specify GPIOs for write protection, see gpio binding - cd-inverted: when present, polarity on the CD line is inverted. See the note below for the case, when a GPIO is used for the CD line +- cd-delay-ms: Set delay time before detecting card after card insert interrupt. + It's only valid when cd-gpios is present. - wp-inverted: when present, polarity on the WP line is inverted. See the note below for the case, when a GPIO is used for the WP line - disable-wp: When set no physical WP line is present. This property should -- 1.9.1