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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2013-01-16 14:13:59 +0100
committerChris Ball <cjb@laptop.org>2013-02-11 13:28:54 -0500
commit111936ff3bc33585b475c1033fc98cd6b3370a74 (patch)
treec561cf4562672e29145bb16faff448639e18e259 /Documentation/devicetree/bindings/mmc
parent07728b77c03dc0721daaf551976d95e6f714af1a (diff)
mmc: mvsdio: implement a Device Tree binding
This patch adds a simple Device Tree binding for the mvsdio driver, as well as the necessary documentation for it. Compatibility with non-DT platforms is preserved, by keeping the platform_data based initialization. We introduce a small difference between non-DT and DT platforms: DT platforms are required to provide a clocks = <...> property, which the driver uses to get the frequency of the clock that goes to the SDIO IP. The behaviour on non-DT platforms is kept unchanged: a clock reference is not mandatory, but the clock frequency must be passed in the "clock" field of the mvsdio_platform_data structure. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Andrew Lunn <andrew@lunn.ch> Tested-by: Stefan Peter <s.peter@mpl.ch> Tested-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'Documentation/devicetree/bindings/mmc')
-rw-r--r--Documentation/devicetree/bindings/mmc/orion-sdio.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mmc/orion-sdio.txt b/Documentation/devicetree/bindings/mmc/orion-sdio.txt
new file mode 100644
index 000000000000..84f0ebd67a13
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/orion-sdio.txt
@@ -0,0 +1,17 @@
+* Marvell orion-sdio controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the orion-sdio driver.
+
+- compatible: Should be "marvell,orion-sdio"
+- clocks: reference to the clock of the SDIO interface
+
+Example:
+
+ mvsdio@d00d4000 {
+ compatible = "marvell,orion-sdio";
+ reg = <0xd00d4000 0x200>;
+ interrupts = <54>;
+ clocks = <&gateclk 17>;
+ status = "disabled";
+ };