From a15255ee43d412d8e1fdb6cfcbaee880fd508efc Mon Sep 17 00:00:00 2001 From: Meng Dongyang Date: Fri, 30 Dec 2016 14:13:41 +0800 Subject: [PATCH] Documentation: bindings: add DT documentation for u2phy and u2phy grf Due to the u2phy registers are separated from general grf, we need to add u2phy grf node and place u2phy node in it. And on some platform, the 480m clock may need to assign clock parent in dts in stead of clock driver. So this patch add u2phy grf node and property of assigned-clocks and assigned-clock-parents to assign parent for 480m clock. Change-Id: I88e63745e38265814169136f079a00791f5813b3 Signed-off-by: Meng Dongyang --- .../bindings/phy/phy-rockchip-inno-usb2.txt | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt index 8494295e2927..f33ec971e575 100644 --- a/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-inno-usb2.txt @@ -91,3 +91,44 @@ grf: syscon@ff770000 { }; }; }; + +Required properties (usb2phy grf node): + - compatible : should be one of the listed compatibles: + "rockchip,rk3328-usb2phy-grf", "syscon", "simple-mfd"; + - reg : the address offset of grf for usb-phy configuration. + - #address-cells : should be 1. + - #size-cells : should be 1. + +Required nodes : a sub-node is required for the phy provides. + The sub-node name is used to identify each phy, + and shall be the following entries: + +Example: + +usb2phy_grf: syscon@ff450000 { + compatible = "rockchip,rk3328-usb2phy-grf", "syscon", + "simple-mfd"; + reg = <0x0 0xff450000 0x0 0x10000>; + #address-cells = <1>; + #size-cells = <1>; + + u2phy: usb2-phy@100 { + compatible = "rockchip,rk3328-usb2phy"; + reg = <0x100 0x10>; + clocks = <&xin24m>; + clock-names = "phyclk"; + #clock-cells = <0>; + assigned-clocks = <&cru USB480M>; + assigned-clock-parents = <&u2phy>; + clock-output-names = "usb480m_phy"; + status = "disabled"; + + u2phy_host: host-port { + #phy-cells = <0>; + interrupts = ; + interrupt-names = "linestate"; + status = "disabled"; + }; + }; +}; +