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

[Biju Das]

Hi Liu,

> -----Original Message-----
> From: Liu Ying <victor.liu@xxxxxxx>
> Sent: Monday, September 30, 2024 10:30 AM
> Subject: Re: [PATCH 5/8] dt-bindings: display: bridge: Add ITE IT6263 LVDS to HDMI converter
> 
> On 09/30/2024, Biju Das wrote:
> > Hi Liu,
> 
> Hi Biju,
> 
> >
> >> -----Original Message-----
> >> From: Liu Ying <victor.liu@xxxxxxx>
> >> Sent: Monday, September 30, 2024 10:16 AM
> >> Subject: Re: [PATCH 5/8] dt-bindings: display: bridge: Add ITE IT6263
> >> LVDS to HDMI converter
> >>
> >> On 09/30/2024, Biju Das wrote:
> >>> Hi Liu,
> >>
> >> Hi Biju,
> >>
> >>>
> >>> thanks for the patch.
> >>>
> >>>> -----Original Message-----
> >>>> From: linux-arm-kernel
> >>>> <linux-arm-kernel-bounces@xxxxxxxxxxxxxxxxxxx>
> >>>> 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@xxxxxxx>
> >>>> ---
> >>>>  .../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.y
> >>>> +++ am
> >>>> +++ l
> >>>> @@ -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@xxxxxxx>
> >>>> +
> >>>> +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@0:
> >>>> +            $ref: /schemas/graph.yaml#/properties/port
> >>>> +            description: the first LVDS input link
> >>>> +
> >>>> +          port@1: false
> >>>> +
> >>>> +          port@2:
> >>>> +            $ref: /schemas/graph.yaml#/properties/port
> >>>> +            description: video port for the HDMI output
> >>>> +
> >>>> +          port@3:
> >>>> +            $ref: /schemas/graph.yaml#/properties/port
> >>>> +            description: sound input port
> >>>> +
> >>>> +        required:
> >>>> +          - port@0
> >>>> +          - port@2
> >>>> +
> >>>> +      - properties:
> >>>> +          port@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@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@2:
> >>>> +            $ref: /schemas/graph.yaml#/properties/port
> >>>> +            description: video port for the HDMI output
> >>>> +
> >>>> +          port@3:
> >>>> +            $ref: /schemas/graph.yaml#/properties/port
> >>>> +            description: sound input port
> >>>
> >>> What about single lvds as device support it?
> >>
> >> The single LVDS link has already been documented in this binding doc.
> >> Please find the "properties" above where only "port@0" and "port@2"
> >> are required.
> >
> > Maybe "the first LVDS input link"-->"Single LVDS input link" for single LVDS block??
> 
> Nope.
> 
> I tested single LVDS link with the second LVDS link.  It didn't work.
> The single LVDS link only works with the first LVDS link.

OK. That is the reason you made port@1 false.

Still port@0 is a single LVDS instance or first LVDS input link for the dual
LVDS configuration??

Cheers,
Biju


> 
> >
> >>
> >> imx8mp-evk-lvds0-imx-lvds-hdmi.dtso and
> >> imx8mp-evk-lvds1-imx-lvds-hdmi.dtso
> >> added in patch 7 support the NXP adapter card with single LVDS link.
> >>
> >>>
> >>> Cheers,
> >>> Biju
> >>>
> >>>> +
> >>>> +        required:
> >>>> +          - port@0
> >>>> +          - port@1
> >>>> +          - port@2
> >>>> +
> >>>> +        allOf:
> >>>> +          - if:
> >>>> +              properties:
> >>>> +                port@0:
> >>>> +                  required:
> >>>> +                    - dual-lvds-odd-pixels
> >>>> +            then:
> >>>> +              properties:
> >>>> +                port@1:
> >>>> +                  properties:
> >>>> +                    dual-lvds-odd-pixels: false
> >>>> +
> >>>> +          - if:
> >>>> +              properties:
> >>>> +                port@0:
> >>>> +                  required:
> >>>> +                    - dual-lvds-even-pixels
> >>>> +            then:
> >>>> +              properties:
> >>>> +                port@1:
> >>>> +                  properties:
> >>>> +                    dual-lvds-even-pixels: false
> >>>> +
> >>>> +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@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@0 {
> >>>> +                    reg = <0>;
> >>>> +
> >>>> +                    it6263_lvds_link1: endpoint {
> >>>> +                        remote-endpoint = <&ldb_lvds_ch0>;
> >>>> +                    };
> >>>> +                };
> >>>> +
> >>>> +                port@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@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@0 {
> >>>> +                    reg = <0>;
> >>>> +                    dual-lvds-odd-pixels;
> >>>> +
> >>>> +                    it6263_lvds_link1_dual: endpoint {
> >>>> +                        remote-endpoint = <&ldb_lvds_ch0>;
> >>>> +                    };
> >>>> +                };
> >>>> +
> >>>> +                port@1 {
> >>>> +                    reg = <1>;
> >>>> +                    dual-lvds-even-pixels;
> >>>> +
> >>>> +                    it6263_lvds_link2_dual: endpoint {
> >>>> +                        remote-endpoint = <&ldb_lvds_ch1>;
> >>>> +                    };
> >>>> +                };
> >>>> +
> >>>> +                port@2 {
> >>>> +                    reg = <2>;
> >>>> +
> >>>> +                    it6263_out_dual: endpoint {
> >>>> +                        remote-endpoint = <&hdmi_in>;
> >>>> +                    };
> >>>> +                };
> >>>> +            };
> >>>> +        };
> >>>> +    };
> >>>> --
> >>>> 2.34.1
> >>>>
> >>>
> >>
> >> --
> >> Regards,
> >> Liu Ying
> >
> 
> --
> Regards,
> Liu Ying