[PATCH v2 1/3] Documentation: Update Arasan SDHC documentation for the APM X-Gene SoC SDHC DTS binding

[Loc Ho]

This patch updates Arasan SDHC documentation for the APM X-Gene SoC SDHC controller
DTS binding.

Signed-off-by: Loc Ho <lho at apm.com>
---
 .../devicetree/bindings/mmc/arasan,sdhci.txt       |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
index 98ee2ab..4dfcb9e 100644
--- a/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
+++ b/Documentation/devicetree/bindings/mmc/arasan,sdhci.txt
@@ -8,14 +8,22 @@ Device Tree Bindings for the Arasan SDHCI Controller
   [3] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
 
 Required Properties:
-  - compatible: Compatibility string. Must be 'arasan,sdhci-8.9a'
-  - reg: From mmc bindings: Register location and length.
-  - clocks: From clock bindings: Handles to clock inputs.
-  - clock-names: From clock bindings: Tuple including "clk_xin" and "clk_ahb"
+  - compatible: Compatibility string. Must be 'arasan,sdhci-8.9a' or
+                'apm,arasan,sdhci-8.9a'
+  - reg: First resource is the SDHC register location and length.
+         Second optional resource is the bridge translation register location
+         and length if required.
   - interrupts: Interrupt specifier
   - interrupt-parent: Phandle for the interrupt controller that services
 		      interrupts for this device.
 
+Optional Properties:
+  - clocks: For format, refer to clock bindings. It requires two clocks if
+            specified - AHB clock and SDHC clock.
+  - clock-names: For format, refer to clock bindings. The clock corresponding
+                 to the AHBC clock must be named "clk_ahb". The clock
+                 corresponding to the SDHC clock must be named "clk_xin".
+
 Example:
 	sdhci at e0100000 {
 		compatible = "arasan,sdhci-8.9a";
-- 
1.5.5