From: Lee Jones Date: Wed, 14 Mar 2012 13:58:34 +0000 (+0000) Subject: mmc: mmci: Add required documentation for Device Tree bindings X-Git-Tag: firefly_0821_release~3680^2~2763^2~22 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8dde8c467441069144d2430d30fca697c8fae2d3;p=firefly-linux-kernel-4.4.55.git mmc: mmci: Add required documentation for Device Tree bindings This provides full documentation detailing each compulsory, optional and device (variant) specific properties available for use within the MMCI Device Tree. Signed-off-by: Lee Jones Acked-by: Arnd Bergmann Signed-off-by: Chris Ball --- diff --git a/Documentation/devicetree/bindings/mmc/mmci.txt b/Documentation/devicetree/bindings/mmc/mmci.txt new file mode 100644 index 000000000000..14a81d526118 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/mmci.txt @@ -0,0 +1,19 @@ +* ARM PrimeCell MultiMedia Card Interface (MMCI) PL180/1 + +The ARM PrimeCell MMCI PL180 and PL181 provides and interface for +reading and writing to MultiMedia and SD cards alike. + +Required properties: +- compatible : contains "arm,pl18x", "arm,primecell". +- reg : contains pl18x registers and length. +- interrupts : contains the device IRQ(s). +- arm,primecell-periphid : contains the PrimeCell Peripheral ID. + +Optional properties: +- wp-gpios : contains any write protect (ro) gpios +- cd-gpios : contains any card detection gpios +- cd-inverted : indicates whether the cd gpio is inverted +- max-frequency : contains the maximum operating frequency +- bus-width : number of data lines, can be <1>, <4>, or <8> +- mmc-cap-mmc-highspeed : indicates whether MMC is high speed capable +- mmc-cap-sd-highspeed : indicates whether SD is high speed capable