[v2 PATCH 1/4] Documentation: bindings: add dt doc for Rockchip USB Type-C PHY
From: robh@kernel.org (Rob Herring)
Date: 2016-06-14 22:51:37
Also in:
linux-devicetree, linux-rockchip, lkml
On Mon, Jun 13, 2016 at 05:39:46PM +0800, Chris Zhong wrote:
quoted hunk ↗ jump to hunk
This patch adds a binding that describes the Rockchip USB Type-C PHY for rk3399 Signed-off-by: Chris Zhong <redacted> --- Changes in v2: - add some registers description Changes in v1: - add extcon node description - move the registers in phy driver - remove the suffix of reset .../devicetree/bindings/phy/phy-rockchip-typec.txt | 77 ++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-typec.txtdiff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt new file mode 100644 index 0000000..430920c --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-typec.txt@@ -0,0 +1,77 @@ +* ROCKCHIP type-c PHY +--------------------- + +Required properties: + - compatible : should be "rockchip,rk3399-typec-phy0" or + "rockchip,rk3399-typec-phy1"
Unless these blocks are different, these should be be same compat string.
+ - reg: Address and length of the usb phy control register set + - rockchip,grf : phandle to the syscon managing the "general + register files" + - clocks : phandle + clock specifier for the phy clocks + - clock-names : string, clock name, must be "tcpdcore", "tcpdphy_ref"; + - resets : a list of phandle + reset specifier pairs + - reset-names : string reset name, must be: + "tcphy", "tcphy_pipe", "uphy_tcphy" + - #phy-cells : Must be 0. See ./phy-bindings.txt for details. + - extcon : extcon specifier for the Power Delivery + +Note, there are 2 type-c phys for RK3399, and they are almost identical, except +these registers(description below), every register node contains 3 sections: +offset, enable bit, write mask bit. + - rockchip,typec_conn_dir : the register of type-c connector direction,
Don't use underscores in property names.
+ for type-c phy0, it must be <0xe580 0 16>; + for type-c phy1, it must be <0xe58c 0 16>; + - rockchip,usb3tousb2_en : the register of type-c force usb3 to usb2 enable + control. + for type-c phy0, it must be <0xe580 3 19>; + for type-c phy1, it must be <0xe58c 3 19>; + - rockchip,external_psm : the register of type-c phy external psm clock + selection. + for type-c phy0, it must be <0xe588 14 30>; + for type-c phy1, it must be <0xe594 14 30>; + - rockchip,pipe_status : the register of type-c phy pipe status. + for type-c phy0, it must be <0xe5c0 0 0>; + for type-c phy1, it must be <0xe5c0 16 16>; + - rockchip,uphy_dp_sel : the register of type-c phy selection for DP + for type-c phy0, it must be <0x6268 19 19>; + for type-c phy1, it must be <0x6268 3 19>;