diff options
| author | Lee Jones <lee.jones@linaro.org> | 2012-03-14 13:58:34 +0000 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-05-04 10:08:29 -0400 |
| commit | 8dde8c467441069144d2430d30fca697c8fae2d3 (patch) | |
| tree | b623a389701aa260128289c77a88987ac0e57bda | |
| parent | 000bc9d5ed296550e7009f56cbdb4b35459beb69 (diff) | |
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 <lee.jones@linaro.org>
Acked-by: Arnd Bergmann <arndb@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | Documentation/devicetree/bindings/mmc/mmci.txt | 19 |
1 files changed, 19 insertions, 0 deletions
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 |