The Arm HDLCD is a display controller that scans out a framebuffer and hands a signal to a digital encoder to generate a DVI or HDMI signal.

Convert the existing DT binding to DT schema.

Signed-off-by: Andre Przywara andre.przywara@arm.com --- .../devicetree/bindings/display/arm,hdlcd.txt | 79 ---------------- .../bindings/display/arm,hdlcd.yaml | 89 +++++++++++++++++++ 2 files changed, 89 insertions(+), 79 deletions(-) delete mode 100644 Documentation/devicetree/bindings/display/arm,hdlcd.txt create mode 100644 Documentation/devicetree/bindings/display/arm,hdlcd.yaml

diff --git a/Documentation/devicetree/bindings/display/arm,hdlcd.txt b/Documentation/devicetree/bindings/display/arm,hdlcd.txt deleted file mode 100644 index 78bc24296f3e4..0000000000000 --- a/Documentation/devicetree/bindings/display/arm,hdlcd.txt +++ /dev/null @@ -1,79 +0,0 @@ -ARM HDLCD - -This is a display controller found on several development platforms produced -by ARM Ltd and in more modern of its' Fast Models. The HDLCD is an RGB -streamer that reads the data from a framebuffer and sends it to a single -digital encoder (DVI or HDMI). - -Required properties: - - compatible: "arm,hdlcd" - - reg: Physical base address and length of the controller's registers. - - interrupts: One interrupt used by the display controller to notify the - interrupt controller when any of the interrupt sources programmed in - the interrupt mask register have activated. - - clocks: A list of phandle + clock-specifier pairs, one for each - entry in 'clock-names'. - - clock-names: A list of clock names. For HDLCD it should contain: - - "pxlclk" for the clock feeding the output PLL of the controller. - -Required sub-nodes: - - port: The HDLCD connection to an encoder chip. The connection is modeled - using the OF graph bindings specified in - Documentation/devicetree/bindings/graph.txt. - -Optional properties: - - memory-region: phandle to a node describing memory (see - Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt) to be - used for the framebuffer; if not present, the framebuffer may be located - anywhere in memory. - - -Example: - -/ { - ... - - hdlcd@2b000000 { - compatible = "arm,hdlcd"; - reg = <0 0x2b000000 0 0x1000>; - interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&oscclk5>; - clock-names = "pxlclk"; - port { - hdlcd_output: endpoint@0 { - remote-endpoint = <&hdmi_enc_input>; - }; - }; - }; - - /* HDMI encoder on I2C bus */ - i2c@7ffa0000 { - .... - hdmi-transmitter@70 { - compatible = "....."; - reg = <0x70>; - port@0 { - hdmi_enc_input: endpoint { - remote-endpoint = <&hdlcd_output>; - }; - - hdmi_enc_output: endpoint { - remote-endpoint = <&hdmi_1_port>; - }; - }; - }; - - }; - - hdmi1: connector@1 { - compatible = "hdmi-connector"; - type = "a"; - port { - hdmi_1_port: endpoint { - remote-endpoint = <&hdmi_enc_output>; - }; - }; - }; - - ... -}; diff --git a/Documentation/devicetree/bindings/display/arm,hdlcd.yaml b/Documentation/devicetree/bindings/display/arm,hdlcd.yaml new file mode 100644 index 0000000000000..a2670258c48d3 --- /dev/null +++ b/Documentation/devicetree/bindings/display/arm,hdlcd.yaml @@ -0,0 +1,89 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/display/arm,hdlcd.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Arm HDLCD display controller binding + +maintainers: + - Liviu Dudau Liviu.Dudau@arm.com + - Andre Przywara andre.przywara@arm.com + +description: + The Arm HDLCD is a display controller found on several development platforms + produced by ARM Ltd and in more modern of its Fast Models. The HDLCD is an + RGB streamer that reads the data from a framebuffer and sends it to a single + digital encoder (DVI or HDMI). + +properties: + compatible: + const: arm,hdlcd + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clock-names: + const: pxlclk + + clocks: + maxItems: 1 + description: The input reference for the pixel clock. + + memory-region: + maxItems: 1 + description: + Phandle to a node describing memory to be used for the framebuffer. + If not present, the framebuffer may be located anywhere in memory. + + iommus: + maxItems: 1 + + port: + $ref: /schemas/graph.yaml#/properties/port + unevaluatedProperties: false + description: + Output endpoint of the controller, connecting the LCD panel signals. + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - clocks + - port + +examples: + - | + hdlcd@2b000000 { + compatible = "arm,hdlcd"; + reg = <0x2b000000 0x1000>; + interrupts = <0 85 4>; + clocks = <&oscclk5>; + clock-names = "pxlclk"; + port { + hdlcd_output: endpoint { + remote-endpoint = <&hdmi_enc_input>; + }; + }; + }; + + /* HDMI encoder on I2C bus */ + i2c { + #address-cells = <1>; + #size-cells = <0>; + hdmi-transmitter@70 { + compatible = "nxp,tda998x"; + reg = <0x70>; + port { + hdmi_enc_input: endpoint { + remote-endpoint = <&hdlcd_output>; + }; + }; + }; + }; +...