| Message ID | 1557301722-20827-2-git-send-email-allen.chen@ite.com.tw (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] dt-bindings: Add binding for IT6505. | expand |
Hi Allen, Am Mittwoch, 8. Mai 2019, 09:48:40 CEST schrieb allen: > From: Allen Chen <allen.chen@ite.com.tw> > > Add a DT binding documentation for IT6505. > > Signed-off-by: Allen Chen <allen.chen@ite.com.tw> > > --- > .../bindings/display/bridge/ite,it6505.txt | 30 ++++++++++++++++++++++ > .../devicetree/bindings/vendor-prefixes.txt | 1 + > 2 files changed, 31 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/bridge/ite,it6505.txt > > diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.txt b/Documentation/devicetree/bindings/display/bridge/ite,it6505.txt > new file mode 100644 > index 0000000..c3506ac > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.txt > @@ -0,0 +1,30 @@ > +iTE it6505 DP bridge bindings > + > +Required properties: > + - compatible: "ite,it6505" > + - reg: i2c address of the bridge > + - ovdd-supply: I/O voltage > + - pwr18-supply: Core voltage > + - interrupts: interrupt specifier of INT pin > + - reset-gpios: gpio specifier of RESET pin > + > +Example: > + it6505dptx: it6505dptx@5c { > + compatible = "ite,it6505"; > + status = "okay"; binding examples should not contain a "status" property. Also as this is a board-specific i2c device, you shouldn't need a status property in the board dts as well, as the default is "okay" anyway. > + interrupt-parent = <&pio>; > + interrupts = <152 IRQ_TYPE_EDGE_RISING 152 0>; > + reg = <0x5c>; > + pinctrl-names = "default"; > + pinctrl-0 = <&it6505_pins>; > + ovdd-supply = <&mt6358_vsim1_reg>; > + pwr18-supply = <&it6505_pp18_reg>; > + reset-gpios = <&pio 179 1>; > + hpd-gpios = <&pio 9 0>; This is missing from the property-list above. > + extcon = <&usbc_extcon>; Not documented as well. Also this looks like it is the same functionality as on rk3399-gru devices and circumvents the Type-C subsystem entirely when handling the display-port alt-mode of the typec port. At least on rk3399-gru the extcon from the chromeos-ec delivered the status and allowed chaning settings of the hidden type-c controller (fusb302 in that case). And while that works for ChromeOS devices this makes it impossible for other devices to sanely use the chip as well. The kernels type-c framework did develop a lot more in the meantime, so this "hack" should probably not spread to more parts and instead should use the type-c framework. I pestered Guenter last year at ELCE about making cros-ec-pd a part of the kernel's type-c subsystem, but I guess nobody had the time so far. > + port { > + it6505_in: endpoint { > + remote-endpoint = <&dpi_out>; Ports usage also it not documented above. Heiko > + }; > + }; > + }; > diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt > index 2c3fc51..c088646 100644 > --- a/Documentation/devicetree/bindings/vendor-prefixes.txt > +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt > @@ -184,6 +184,7 @@ iom Iomega Corporation > isee ISEE 2007 S.L. > isil Intersil > issi Integrated Silicon Solutions Inc. > +ite iTE Tech. Inc. > itead ITEAD Intelligent Systems Co.Ltd > iwave iWave Systems Technologies Pvt. Ltd. > jdi Japan Display Inc. >
diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.txt b/Documentation/devicetree/bindings/display/bridge/ite,it6505.txt new file mode 100644 index 0000000..c3506ac --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.txt @@ -0,0 +1,30 @@ +iTE it6505 DP bridge bindings + +Required properties: + - compatible: "ite,it6505" + - reg: i2c address of the bridge + - ovdd-supply: I/O voltage + - pwr18-supply: Core voltage + - interrupts: interrupt specifier of INT pin + - reset-gpios: gpio specifier of RESET pin + +Example: + it6505dptx: it6505dptx@5c { + compatible = "ite,it6505"; + status = "okay"; + interrupt-parent = <&pio>; + interrupts = <152 IRQ_TYPE_EDGE_RISING 152 0>; + reg = <0x5c>; + pinctrl-names = "default"; + pinctrl-0 = <&it6505_pins>; + ovdd-supply = <&mt6358_vsim1_reg>; + pwr18-supply = <&it6505_pp18_reg>; + reset-gpios = <&pio 179 1>; + hpd-gpios = <&pio 9 0>; + extcon = <&usbc_extcon>; + port { + it6505_in: endpoint { + remote-endpoint = <&dpi_out>; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 2c3fc51..c088646 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -184,6 +184,7 @@ iom Iomega Corporation isee ISEE 2007 S.L. isil Intersil issi Integrated Silicon Solutions Inc. +ite iTE Tech. Inc. itead ITEAD Intelligent Systems Co.Ltd iwave iWave Systems Technologies Pvt. Ltd. jdi Japan Display Inc.