From 28c2a62bd53300784b9e6815ae115fb888ac3cfd Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Mon, 28 Jan 2013 16:49:11 -0500 Subject: mmc: dt: bus-width can be an optional property None of mmc drivers implements bus-width as a required device tree property. Instead, some drivers like atmel-mci, dw_mmc, sdhci-s3c implement it as an optional one, and will force bus width to be 1 when the property is absent. Let's change the common binding to reflect what the drivers are usually doing. Signed-off-by: Shawn Guo Signed-off-by: Chris Ball --- Documentation/devicetree/bindings/mmc/mmc.txt | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'Documentation/devicetree/bindings/mmc') diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 34f28ed..469cf53 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -6,9 +6,6 @@ Interpreted by the OF core: - reg: Registers location and length. - interrupts: Interrupts used by the MMC controller. -Required properties: -- bus-width: Number of data lines, can be <1>, <4>, or <8> - Card detection: If no property below is supplied, host native card detect is used. Only one of the properties in this section should be supplied: @@ -17,6 +14,8 @@ Only one of the properties in this section should be supplied: - non-removable: non-removable slot (like eMMC); assume always present. Optional properties: +- bus-width: Number of data lines, can be <1>, <4>, or <8>. The default + will be <1> if the property is absent. - wp-gpios: Specify GPIOs for write protection, see gpio binding - cd-inverted: when present, polarity on the cd gpio line is inverted - wp-inverted: when present, polarity on the wp gpio line is inverted -- cgit v1.1