On Mon, Mar 23, 2020 at 01:21:53PM +0800, allen wrote: > Add a DT binding documentation for IT6505. > > Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx> > Signed-off-by: Allen Chen <allen.chen@xxxxxxxxxx> > Signed-off-by: Pi-Hsun Shih <pihsun@xxxxxxxxxxxx> > --- > cros-ec does not have an associated driver that uses the standard Linux USB-C driver class. > extcon is used to model the Type-C connector.(crbug.com/982932) That's nice, but doesn't matter for upstream. And sounds like a driver problem, not a binding issue. > --- > .../bindings/display/bridge/ite,it6505.yaml | 91 ++++++++++++++++++++++ > 1 file changed, 91 insertions(+) > create mode 100644 Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > > diff --git a/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > new file mode 100644 > index 00000000..13feeef > --- /dev/null > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6505.yaml > @@ -0,0 +1,91 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/display/bridge/ite,it6505.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: ITE it6505 Device Tree Bindings > + > +maintainers: > + - Allen Chen <allen.chen@xxxxxxxxxx> > + > +description: | > + The IT6505 is a high-performance DisplayPort 1.1a transmitter, > + fully compliant with DisplayPort 1.1a, HDCP 1.3 specifications. > + The IT6505 supports color depth of up to 36 bits (12 bits/color) > + and ensures robust transmission of high-quality uncompressed video > + content, along with uncompressed and compressed digital audio content. > + > + Aside from the various video output formats supported, the IT6505 > + also encodes and transmits up to 8 channels of I2S digital audio, > + with sampling rate up to 192kHz and sample size up to 24 bits. > + In addition, an S/PDIF input port takes in compressed audio of up to > + 192kHz frame rate. > + > + Each IT6505 chip comes preprogrammed with an unique HDCP key, > + in compliance with the HDCP 1.3 standard so as to provide secure > + transmission of high-definition content. Users of the IT6505 need not > + purchase any HDCP keys or ROMs. > + > +properties: > + compatible: > + const: ite,it6505 > + > + ovdd-supply: > + maxItems: 1 > + description: I/O voltage > + > + pwr18-supply: > + maxItems: 1 > + description: core voltage > + > + interrupts: > + maxItems: 1 > + description: interrupt specifier of INT pin > + > + reset-gpios: > + maxItems: 1 > + description: gpio specifier of RESET pin > + > + extcon: Think I said this already, but don't use extcon and define an output port to a DP or USB connector. > + maxItems: 1 > + description: extcon specifier for the Power Delivery > + > + port: > + type: object > + description: A port node pointing to DPI host port node > + > +required: > + - compatible > + - ovdd-supply > + - pwr18-supply > + - interrupts > + - reset-gpios > + - extcon > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/irq.h> > + > + i2c3 { > + #address-cells = <1>; > + #size-cells = <0>; > + > + dp-bridge@5c { > + compatible = "ite,it6505"; > + interrupts = <152 IRQ_TYPE_EDGE_FALLING 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>; > + extcon = <&usbc_extcon>; > + > + port { > + it6505_in: endpoint { > + remote-endpoint = <&dpi_out>; > + }; > + }; > + }; > + }; > -- > 1.9.1 >
