Add device tree binding document for Rockchip USBDP Combo PHY with Samsung IP block. Co-developed-by: Frank Wang <frank.wang@xxxxxxxxxxxxxx> Signed-off-by: Frank Wang <frank.wang@xxxxxxxxxxxxxx> Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx> Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx> Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> --- .../bindings/phy/phy-rockchip-usbdp.yaml | 148 ++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml diff --git a/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml b/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml new file mode 100644 index 000000000000..1f1f8863b80d --- /dev/null +++ b/Documentation/devicetree/bindings/phy/phy-rockchip-usbdp.yaml @@ -0,0 +1,148 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/phy/phy-rockchip-usbdp.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip USBDP Combo PHY with Samsung IP block + +maintainers: + - Frank Wang <frank.wang@xxxxxxxxxxxxxx> + - Zhang Yubing <yubing.zhang@xxxxxxxxxxxxxx> + +properties: + compatible: + enum: + - rockchip,rk3588-usbdp-phy + + reg: + maxItems: 1 + + "#phy-cells": + description: | + Cell allows setting the type of the PHY. Possible values are: + - PHY_TYPE_USB3 + - PHY_TYPE_DP + const: 1 + + clocks: + maxItems: 4 + + clock-names: + items: + - const: refclk + - const: immortal + - const: pclk + - const: utmi + + resets: + maxItems: 5 + + reset-names: + items: + - const: init + - const: cmn + - const: lane + - const: pcs_apb + - const: pma_apb + + rockchip,dp-lane-mux: + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 2 + maxItems: 4 + items: + maximum: 3 + description: + An array of physical Type-C lanes indexes. Position of an entry + determines the DisplayPort (DP) lane index, while the value of an entry + indicates physical Type-C lane. The supported DP lanes number are 2 or 4. + e.g. for 2 lanes DP lanes map, we could have "rockchip,dp-lane-mux = <2, + 3>;", assuming DP lane0 on Type-C phy lane2, DP lane1 on Type-C phy + lane3. For 4 lanes DP lanes map, we could have "rockchip,dp-lane-mux = + <0, 1, 2, 3>;", assuming DP lane0 on Type-C phy lane0, DP lane1 on Type-C + phy lane1, DP lane2 on Type-C phy lane2, DP lane3 on Type-C phy lane3. If + DP lanes are mapped by DisplayPort Alt mode, this property is not needed. + + rockchip,u2phy-grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the 'usb2 phy general register files'. + + rockchip,usb-grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the 'usb general register files'. + + rockchip,usbdpphy-grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the 'usbdp phy general register files'. + + rockchip,vo-grf: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Phandle to the syscon managing the 'video output general register files'. + When select the DP lane mapping will request its phandle. + + sbu1-dc-gpios: + description: + GPIO connected to the SBU1 line of the USB-C connector via a big resistor + (~100K) to apply a DC offset for signalling the connector orientation. + maxItems: 1 + + sbu2-dc-gpios: + description: + GPIO connected to the SBU2 line of the USB-C connector via a big resistor + (~100K) to apply a DC offset for signalling the connector orientation. + maxItems: 1 + + orientation-switch: + description: Flag the port as possible handler of orientation switching + type: boolean + + mode-switch: + description: Flag the port as possible handler of altmode switching + type: boolean + + port: + $ref: /schemas/graph.yaml#/properties/port + description: + A port node to link the PHY to a TypeC controller for the purpose of + handling orientation switching. + +required: + - compatible + - reg + - clocks + - clock-names + - resets + - reset-names + - "#phy-cells" + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/rockchip,rk3588-cru.h> + #include <dt-bindings/reset/rockchip,rk3588-cru.h> + + usbdp_phy0: phy@fed80000 { + compatible = "rockchip,rk3588-usbdp-phy"; + reg = <0xfed80000 0x10000>; + #phy-cells = <1>; + clocks = <&cru CLK_USBDPPHY_MIPIDCPPHY_REF>, + <&cru CLK_USBDP_PHY0_IMMORTAL>, + <&cru PCLK_USBDPPHY0>, + <&u2phy0>; + clock-names = "refclk", "immortal", "pclk", "utmi"; + resets = <&cru SRST_USBDP_COMBO_PHY0_INIT>, + <&cru SRST_USBDP_COMBO_PHY0_CMN>, + <&cru SRST_USBDP_COMBO_PHY0_LANE>, + <&cru SRST_USBDP_COMBO_PHY0_PCS>, + <&cru SRST_P_USBDPPHY0>; + reset-names = "init", "cmn", "lane", "pcs_apb", "pma_apb"; + rockchip,u2phy-grf = <&usb2phy0_grf>; + rockchip,usb-grf = <&usb_grf>; + rockchip,usbdpphy-grf = <&usbdpphy0_grf>; + rockchip,vo-grf = <&vo0_grf>; + }; -- 2.43.0
