[PATCH 5/8] dt-bindings: display: bridge: Add ITE IT6263 LVDS to HDMI converter

Biju Das biju.das.jz at bp.renesas.com
Mon Sep 30 13:18:55 UTC 2024


Hi Liu,

> -----Original Message-----
> From: Biju Das
> Sent: Monday, September 30, 2024 10:04 AM
> Subject: RE: [PATCH 5/8] dt-bindings: display: bridge: Add ITE IT6263 LVDS to HDMI converter
> 
> Hi Liu,
> 
> thanks for the patch.
> 
> > -----Original Message-----
> > From: linux-arm-kernel <linux-arm-kernel-bounces at lists.infradead.org>
> > On Behalf Of Liu Ying
> > Sent: Monday, September 30, 2024 6:29 AM
> > Subject: [PATCH 5/8] dt-bindings: display: bridge: Add ITE IT6263 LVDS
> > to HDMI converter
> >
> > Document ITE IT6263 LVDS to HDMI converter.
> >
> > Product link:
> > https://www.ite.com.tw/en/product/cate1/IT6263
> >
> > Signed-off-by: Liu Ying <victor.liu at nxp.com>
> > ---
> >  .../bindings/display/bridge/ite,it6263.yaml   | 310 ++++++++++++++++++
> >  1 file changed, 310 insertions(+)
> >  create mode 100644
> > Documentation/devicetree/bindings/display/bridge/ite,it6263.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/ite,it6263.yaml
> > b/Documentation/devicetree/bindings/display/bridge/ite,it6263.yaml
> > new file mode 100644
> > index 000000000000..97fb81e5bc4a
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/bridge/ite,it6263.yaml
> > @@ -0,0 +1,310 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/display/bridge/ite,it6263.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: ITE IT6263 LVDS to HDMI converter
> > +
> > +maintainers:
> > +  - Liu Ying <victor.liu at nxp.com>
> > +
> > +description: |
> > +  The IT6263 is a high-performance single-chip De-SSC(De-Spread
> > +Spectrum) LVDS
> > +  to HDMI converter.  Combined with LVDS receiver and HDMI 1.4a
> > +transmitter,
> > +  the IT6263 supports LVDS input and HDMI 1.4 output by conversion function.
> > +  The built-in LVDS receiver can support single-link and dual-link
> > +LVDS inputs,
> > +  and the built-in HDMI transmitter is fully compliant with HDMI
> > +1.4a/3D, HDCP
> > +  1.2 and backward compatible with DVI 1.0 specification.
> > +
> > +  The IT6263 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.
> > +
> > +  The newly supported High-Bit Rate(HBR) audio by HDMI specifications
> > + v1.3 is  provided by the IT6263 in two interfaces: the four I2S
> > + input ports or the  S/PDIF input port.  With both interfaces the
> > + highest possible HBR frame rate  is supported at up to 768KHz.
> > +
> > +properties:
> > +  compatible:
> > +    const: ite,it6263
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  clocks:
> > +    maxItems: 1
> > +    description: audio master clock
> > +
> > +  clock-names:
> > +    const: mclk
> > +
> > +  reset-gpios:
> > +    maxItems: 1
> > +
> > +  ivdd-supply:
> > +    description: 1.8V digital logic power
> > +
> > +  ovdd-supply:
> > +    description: 3.3V I/O pin power
> > +
> > +  txavcc18-supply:
> > +    description: 1.8V HDMI analog frontend power
> > +
> > +  txavcc33-supply:
> > +    description: 3.3V HDMI analog frontend power
> > +
> > +  pvcc1-supply:
> > +    description: 1.8V HDMI frontend core PLL power
> > +
> > +  pvcc2-supply:
> > +    description: 1.8V HDMI frontend filter PLL power
> > +
> > +  avcc-supply:
> > +    description: 3.3V LVDS frontend power
> > +
> > +  anvdd-supply:
> > +    description: 1.8V LVDS frontend analog power
> > +
> > +  apvdd-supply:
> > +    description: 1.8V LVDS frontend PLL power
> > +
> > +  "#sound-dai-cells":
> > +    const: 0
> > +
> > +  ite,i2s-audio-fifo-sources:
> > +    $ref: /schemas/types.yaml#/definitions/uint32-array
> > +    minItems: 1
> > +    maxItems: 4
> > +    items:
> > +      enum: [0, 1, 2, 3]
> > +    description:
> > +      Each array element indicates the pin number of an I2S serial data input
> > +      line which is connected to an audio FIFO, from audio FIFO0 to FIFO3.
> > +
> > +  ite,rl-channel-swap-audio-sources:
> > +    $ref: /schemas/types.yaml#/definitions/uint32-array
> > +    minItems: 1
> > +    maxItems: 4
> > +    uniqueItems: true
> > +    items:
> > +      enum: [0, 1, 2, 3]
> > +    description:
> > +      Each array element indicates an audio source whose right channel and left
> > +      channel are swapped by this converter. For I2S, the element is the pin
> > +      number of an I2S serial data input line. For S/PDIF, the element is always
> > +      0.
> > +
> > +  ports:
> > +    $ref: /schemas/graph.yaml#/properties/ports
> > +
> > +    oneOf:
> > +      - properties:
> > +          port at 0:
> > +            $ref: /schemas/graph.yaml#/properties/port
> > +            description: the first LVDS input link
> > +
> > +          port at 1: false
> > +
> > +          port at 2:
> > +            $ref: /schemas/graph.yaml#/properties/port
> > +            description: video port for the HDMI output
> > +
> > +          port at 3:
> > +            $ref: /schemas/graph.yaml#/properties/port
> > +            description: sound input port
> > +
> > +        required:
> > +          - port at 0
> > +          - port at 2
> > +
> > +      - properties:
> > +          port at 0:
> > +            $ref: /schemas/graph.yaml#/$defs/port-base
> > +            unevaluatedProperties: false
> > +            description: the first LVDS input link
> > +
> > +            properties:
> > +              dual-lvds-odd-pixels:
> > +                type: boolean
> > +                description: the first sink port for odd pixels
> > +
> > +              dual-lvds-even-pixels:
> > +                type: boolean
> > +                description: the first sink port for even pixels
> > +
> > +            oneOf:
> > +              - required: [dual-lvds-odd-pixels]
> > +              - required: [dual-lvds-even-pixels]
> > +
> > +          port at 1:
> > +            $ref: /schemas/graph.yaml#/$defs/port-base
> > +            unevaluatedProperties: false
> > +            description: the second LVDS input link
> > +
> > +            properties:
> > +              dual-lvds-even-pixels:
> > +                type: boolean
> > +                description: the second sink port for even pixels
> > +
> > +              dual-lvds-odd-pixels:
> > +                type: boolean
> > +                description: the second sink port for odd pixels
> > +
> > +            oneOf:
> > +              - required: [dual-lvds-even-pixels]
> > +              - required: [dual-lvds-odd-pixels]
> 
> 
> > +
> > +          port at 2:
> > +            $ref: /schemas/graph.yaml#/properties/port
> > +            description: video port for the HDMI output
> > +
> > +          port at 3:
> > +            $ref: /schemas/graph.yaml#/properties/port
> > +            description: sound input port
> 
> What about single lvds as device support it?
> 
> Cheers,
> Biju
> 
> > +
> > +        required:
> > +          - port at 0
> > +          - port at 1
> > +          - port at 2
> > +
> > +        allOf:
> > +          - if:
> > +              properties:
> > +                port at 0:
> > +                  required:
> > +                    - dual-lvds-odd-pixels
> > +            then:
> > +              properties:
> > +                port at 1:
> > +                  properties:
> > +                    dual-lvds-odd-pixels: false
> > +
> > +          - if:
> > +              properties:
> > +                port at 0:
> > +                  required:
> > +                    - dual-lvds-even-pixels
> > +            then:
> > +              properties:
> > +                port at 1:
> > +                  properties:
> > +                    dual-lvds-even-pixels: false

Do we need to document ite,data-mapping to support both VESA and JEIDA formats??

Or

Is there any run time info available to get this info? Currently,
I see it is hardcoded in driver.

Cheers,
Biju

> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - ivdd-supply
> > +  - ovdd-supply
> > +  - txavcc18-supply
> > +  - txavcc33-supply
> > +  - pvcc1-supply
> > +  - pvcc2-supply
> > +  - avcc-supply
> > +  - anvdd-supply
> > +  - apvdd-supply
> > +  - ports
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    /* single-link LVDS input */
> > +    #include <dt-bindings/gpio/gpio.h>
> > +
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        hdmi at 4c {
> > +            compatible = "ite,it6263";
> > +            reg = <0x4c>;
> > +            reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
> > +            ivdd-supply = <&reg_buck5>;
> > +            ovdd-supply = <&reg_vext_3v3>;
> > +            txavcc18-supply = <&reg_buck5>;
> > +            txavcc33-supply = <&reg_vext_3v3>;
> > +            pvcc1-supply = <&reg_buck5>;
> > +            pvcc2-supply = <&reg_buck5>;
> > +            avcc-supply = <&reg_vext_3v3>;
> > +            anvdd-supply = <&reg_buck5>;
> > +            apvdd-supply = <&reg_buck5>;
> > +
> > +            ports {
> > +                #address-cells = <1>;
> > +                #size-cells = <0>;
> > +
> > +                port at 0 {
> > +                    reg = <0>;
> > +
> > +                    it6263_lvds_link1: endpoint {
> > +                        remote-endpoint = <&ldb_lvds_ch0>;
> > +                    };
> > +                };
> > +
> > +                port at 2 {
> > +                    reg = <2>;
> > +
> > +                    it6263_out: endpoint {
> > +                        remote-endpoint = <&hdmi_in>;
> > +                    };
> > +                };
> > +            };
> > +        };
> > +    };
> > +
> > +  - |
> > +    /* dual-link LVDS input */
> > +    #include <dt-bindings/gpio/gpio.h>
> > +
> > +    i2c {
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        hdmi at 4c {
> > +            compatible = "ite,it6263";
> > +            reg = <0x4c>;
> > +            reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
> > +            ivdd-supply = <&reg_buck5>;
> > +            ovdd-supply = <&reg_vext_3v3>;
> > +            txavcc18-supply = <&reg_buck5>;
> > +            txavcc33-supply = <&reg_vext_3v3>;
> > +            pvcc1-supply = <&reg_buck5>;
> > +            pvcc2-supply = <&reg_buck5>;
> > +            avcc-supply = <&reg_vext_3v3>;
> > +            anvdd-supply = <&reg_buck5>;
> > +            apvdd-supply = <&reg_buck5>;
> > +
> > +            ports {
> > +                #address-cells = <1>;
> > +                #size-cells = <0>;
> > +
> > +                port at 0 {
> > +                    reg = <0>;
> > +                    dual-lvds-odd-pixels;
> > +
> > +                    it6263_lvds_link1_dual: endpoint {
> > +                        remote-endpoint = <&ldb_lvds_ch0>;
> > +                    };
> > +                };
> > +
> > +                port at 1 {
> > +                    reg = <1>;
> > +                    dual-lvds-even-pixels;
> > +
> > +                    it6263_lvds_link2_dual: endpoint {
> > +                        remote-endpoint = <&ldb_lvds_ch1>;
> > +                    };
> > +                };
> > +
> > +                port at 2 {
> > +                    reg = <2>;
> > +
> > +                    it6263_out_dual: endpoint {
> > +                        remote-endpoint = <&hdmi_in>;
> > +                    };
> > +                };
> > +            };
> > +        };
> > +    };
> > --
> > 2.34.1
> >



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