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15:51:13 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 5/8] dt-bindings: display: bridge: Add ITE IT6263 LVDS to HDMI converter To: Biju Das , "dri-devel@lists.freedesktop.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" Cc: "andrzej.hajda@intel.com" , "neil.armstrong@linaro.org" , "rfoss@kernel.org" , "laurent.pinchart" , "jonas@kwiboo.se" , "jernej.skrabec@gmail.com" , "maarten.lankhorst@linux.intel.com" , "mripard@kernel.org" , "tzimmermann@suse.de" , "airlied@gmail.com" , "simona@ffwll.ch" , "robh@kernel.org" , "krzk+dt@kernel.org" , "conor+dt@kernel.org" , "shawnguo@kernel.org" , "s.hauer@pengutronix.de" , "kernel@pengutronix.de" , "festevam@gmail.com" , "catalin.marinas@arm.com" , "will@kernel.org" , "quic_bjorande@quicinc.com" , "geert+renesas@glider.be" , "dmitry.baryshkov@linaro.org" , "arnd@arndb.de" , "nfraprado@collabora.com" , "o.rempel@pengutronix.de" , "y.moog@phytec.de" 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=?utf-8?B?L1dsZ0gvVStsOGY4b3plelk5MHJocjF3UW51RDVVYmVGTVlrY3NuZEFHeWdq?= =?utf-8?Q?KJAF0GDL0f/wvwUcqYxsHZxPa?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 67ddcc3c-9bce-49b2-241c-08dce83717e4 X-MS-Exchange-CrossTenant-AuthSource: AM7PR04MB7046.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Oct 2024 07:50:50.4471 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: M3jwgRCIytHR4TuZqgsGeVZzVlK4OD7XvHJYixOhK458U7xxKmomwwXtiWZCLAj6UlSTKj2GOpm4Gh75JPFP1A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: GV1PR04MB10477 On 09/30/2024, Biju Das wrote: > Hi Liu, Hi Biju, > >> -----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 >>> 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 >>> --- >>> .../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 >>> + >>> +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? >> >> 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 > > 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. I think there are two options: 1) Reference the data-mapping property in lvds-data-mapping.yaml Question is that only jeida-18, jeida-24 and vesa-24 are enumerated, while IT6263 supports something like jeida-30 and vesa-30(not sure if they are standarized or not) with 5 data lanes(A-E) per LVDS link as the LVDS mapping table in IT6263 datasheet mentions. 2) Document the number of data lanes per LVDS link This is enough. data-mapping is kind of too much information from DT point of view. Linux display bridge drivers support runtime bus format negotiation to determine the data mapping. So maybe a property like this is ok: ite,lvds-link-num-data-lanes: $ref: /schemas/types.yaml#/definitions/uint8 enum: [3, 4, 5] BTW, I only tested 4 data lanes. Not sure if the other 2 work or not. Laurent, Rob, any thoughts? > > 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 >>> + >>> + i2c { >>> + #address-cells = <1>; >>> + #size-cells = <0>; >>> + >>> + hdmi@4c { >>> + compatible = "ite,it6263"; >>> + reg = <0x4c>; >>> + reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>; >>> + ivdd-supply = <®_buck5>; >>> + ovdd-supply = <®_vext_3v3>; >>> + txavcc18-supply = <®_buck5>; >>> + txavcc33-supply = <®_vext_3v3>; >>> + pvcc1-supply = <®_buck5>; >>> + pvcc2-supply = <®_buck5>; >>> + avcc-supply = <®_vext_3v3>; >>> + anvdd-supply = <®_buck5>; >>> + apvdd-supply = <®_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 >>> + >>> + i2c { >>> + #address-cells = <1>; >>> + #size-cells = <0>; >>> + >>> + hdmi@4c { >>> + compatible = "ite,it6263"; >>> + reg = <0x4c>; >>> + reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>; >>> + ivdd-supply = <®_buck5>; >>> + ovdd-supply = <®_vext_3v3>; >>> + txavcc18-supply = <®_buck5>; >>> + txavcc33-supply = <®_vext_3v3>; >>> + pvcc1-supply = <®_buck5>; >>> + pvcc2-supply = <®_buck5>; >>> + avcc-supply = <®_vext_3v3>; >>> + anvdd-supply = <®_buck5>; >>> + apvdd-supply = <®_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