From: Lars-Peter Clausen Date: Wed, 6 May 2015 18:31:20 +0000 (+0200) Subject: mmc: dt: Allow to specify that no write protect signal is present X-Git-Tag: omap-for-v4.2/fixes-rc1^2~161^2~58 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=19f4424677455a01b93163975cfbcffa9adb3336;p=pandora-kernel.git mmc: dt: Allow to specify that no write protect signal is present Allow to specify in the device-tree that no physical write-protect signal is connected to a particular instance of a MMC controller. Setting the property will cause the core will assume that the SD card is always read-write. The name for the new property is 'disable-wp' and was chosen based on the property with the same function from the Synopsys designware mobile storage host controller DT bindings specification. Signed-off-by: Lars-Peter Clausen Cc: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Signed-off-by: Ulf Hansson --- diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 438899e8829b..0384fc3f64e8 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -21,6 +21,11 @@ Optional properties: below for the case, when a GPIO is used for the CD line - 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 + only be specified when the controller has a dedicated write-protect + detection logic. If a GPIO is always used for the write-protect detection + logic it is sufficient to not specify wp-gpios property in the absence of a WP + line. - max-frequency: maximum operating clock frequency - no-1-8-v: when present, denotes that 1.8v card voltage is not supported on this system, even if the controller claims it is. Reading git-diff-tree failed