From: Shawn Lin <shawn.lin@rock-chips.com>
Date: Tue, 5 Jan 2016 01:07:14 +0000 (+0800)
Subject: UPSTREAM: Documentation: bindings: add dt documentation for Rockchip eMMC PHY
X-Git-Tag: firefly_0821_release~3346
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e7e7401ac59e984e6390600fac6a84c4ac68b704;p=firefly-linux-kernel-4.4.55.git

UPSTREAM: Documentation: bindings: add dt documentation for Rockchip eMMC PHY

This patch adds a binding that describes the Rockchip eMMC PHYs
found on Rockchip SoCs eMMC interface.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
(cherry picked from git.kernel.org kishon/linux-phy next
 commit c9a1ddcac5b95a9dbf3d3f71d3be8b157239cce5)

Change-Id: I6913babddbc70c1ad3ea2234d8afac79190852a4
---

diff --git a/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
new file mode 100644
index 000000000000..61916f15a949
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/rockchip-emmc-phy.txt
@@ -0,0 +1,19 @@
+Rockchip EMMC PHY
+-----------------------
+
+Required properties:
+ - compatible: rockchip,rk3399-emmc-phy
+ - rockchip,grf : phandle to the syscon managing the "general
+   register files"
+ - #phy-cells: must be 0
+ - reg: PHY configure reg address offset in "general
+   register files"
+
+Example:
+
+emmcphy: phy {
+	compatible = "rockchip,rk3399-emmc-phy";
+	rockchip,grf = <&grf>;
+	reg = <0xf780>;
+	#phy-cells = <0>;
+};