On 2023/4/19 14:15, Laurent Pinchart wrote: > Hi Jack, > > Thank you for the patch. > > On Thu, Apr 13, 2023 at 11:55:39AM +0800, Jack Zhu wrote: >> Add the bindings documentation for Starfive JH7110 Camera Subsystem >> which is used for handing image sensor data. >> >> Signed-off-by: Jack Zhu <jack.zhu@xxxxxxxxxxxxxxxx> >> --- >> .../bindings/media/starfive,jh7110-camss.yaml | 164 ++++++++++++++++++ >> MAINTAINERS | 7 + >> 2 files changed, 171 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml >> >> diff --git a/Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml b/Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml >> new file mode 100644 >> index 000000000000..4cd144f1b845 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml >> @@ -0,0 +1,164 @@ >> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) >> + >> +%YAML 1.2 >> +--- >> +$id: http://devicetree.org/schemas/media/starfive,jh7110-camss.yaml# >> +$schema: http://devicetree.org/meta-schemas/core.yaml# >> + >> +title: Starfive SoC CAMSS ISP >> + >> +maintainers: >> + - Jack Zhu <jack.zhu@xxxxxxxxxxxxxxxx> >> + - Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx> >> + >> +description: >> + The Starfive CAMSS ISP is a Camera interface for Starfive JH7110 SoC. It >> + consists of a VIN controller (Video In Controller, a top-level control until) >> + and an ISP. >> + >> +properties: >> + compatible: >> + const: starfive,jh7110-camss >> + >> + reg: >> + maxItems: 2 >> + >> + reg-names: >> + items: >> + - const: syscon >> + - const: isp >> + >> + clocks: >> + maxItems: 7 >> + >> + clock-names: >> + items: >> + - const: apb_func >> + - const: wrapper_clk_c >> + - const: dvp_inv >> + - const: axiwr >> + - const: mipi_rx0_pxl >> + - const: ispcore_2x >> + - const: isp_axi >> + >> + resets: >> + maxItems: 6 >> + >> + reset-names: >> + items: >> + - const: wrapper_p >> + - const: wrapper_c >> + - const: axird >> + - const: axiwr >> + - const: isp_top_n >> + - const: isp_top_axi >> + >> + power-domains: >> + items: >> + - description: JH7110 ISP Power Domain Switch Controller. >> + >> + interrupts: >> + maxItems: 4 >> + >> + ports: >> + $ref: /schemas/graph.yaml#/properties/ports >> + >> + properties: >> + port@0: >> + $ref: /schemas/graph.yaml#/$defs/port-base >> + unevaluatedProperties: false >> + description: Input port for receiving DVP data. >> + >> + properties: >> + endpoint: >> + $ref: video-interfaces.yaml# >> + unevaluatedProperties: false >> + >> + properties: >> + bus-width: >> + const: 8 >> + >> + data-shift: >> + const: 2 > > As far as I can tell, those two properties are not handled by the > driver. I assume this is because the driver doesn't support the DVP > input yet. That's fine, but it makes it a bit hard to review the device > tree. Could you provide some information about the DVP hardware > interface ? Does it support both BT.656 and sync signals, or just sync > signals ? Are the polarities of the clock and h/v sync controllable ? > Is the parallel input bus 8-bit wide or are other options supported ? > And finally, what are you modelling with data-shift: 2 ? > Hello Laurent, The DVP hardware supports BT.656 and sync signals, can control the polarities of h/v sync, supports 8/10/12 bit wide, and data-shift: 2 is line 9-2. Jack >> + >> + port@1: >> + $ref: /schemas/graph.yaml#/properties/port >> + description: Input port for receiving CSI data. >> + >> + required: >> + - port@0 >> + - port@1 >> + >> +required: >> + - compatible >> + - reg >> + - reg-names >> + - clocks >> + - clock-names >> + - resets >> + - reset-names >> + - power-domains >> + - interrupts >> + - ports >> + >> +additionalProperties: false >> + >> +examples: >> + - | >> + isp@19840000 { >> + compatible = "starfive,jh7110-camss"; >> + reg = <0x19840000 0x10000>, >> + <0x19870000 0x30000>; >> + reg-names = "syscon", "isp"; >> + clocks = <&ispcrg 0>, >> + <&ispcrg 13>, >> + <&ispcrg 2>, >> + <&ispcrg 12>, >> + <&ispcrg 1>, >> + <&syscrg 51>, >> + <&syscrg 52>; >> + clock-names = "apb_func", >> + "wrapper_clk_c", >> + "dvp_inv", >> + "axiwr", >> + "mipi_rx0_pxl", >> + "ispcore_2x", >> + "isp_axi"; >> + resets = <&ispcrg 0>, >> + <&ispcrg 1>, >> + <&ispcrg 10>, >> + <&ispcrg 11>, >> + <&syscrg 41>, >> + <&syscrg 42>; >> + reset-names = "wrapper_p", >> + "wrapper_c", >> + "axird", >> + "axiwr", >> + "isp_top_n", >> + "isp_top_axi"; >> + power-domains = <&pwrc 5>; >> + interrupts = <92>, <87>, <88>, <90>; >> + >> + ports { >> + #address-cells = <1>; >> + #size-cells = <0>; >> + port@0 { >> + reg = <0>; >> + vin_from_sc2235: endpoint { >> + remote-endpoint = <&sc2235_to_vin>; >> + bus-width = <8>; >> + data-shift = <2>; >> + hsync-active = <1>; >> + vsync-active = <0>; >> + pclk-sample = <1>; >> + }; >> + }; >> + >> + port@1 { >> + reg = <1>; >> + vin_from_csi2rx: endpoint { >> + remote-endpoint = <&csi2rx_to_vin>; >> + }; >> + }; >> + }; >> + }; >> diff --git a/MAINTAINERS b/MAINTAINERS >> index bbb8b5c0187b..b8c76b0d7eb3 100644 >> --- a/MAINTAINERS >> +++ b/MAINTAINERS >> @@ -19909,6 +19909,13 @@ M: Ion Badulescu <ionut@xxxxxxxxxx> >> S: Odd Fixes >> F: drivers/net/ethernet/adaptec/starfire* >> >> +STARFIVE CAMERA SUBSYSTEM DRIVER >> +M: Jack Zhu <jack.zhu@xxxxxxxxxxxxxxxx> >> +M: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx> >> +L: linux-media@xxxxxxxxxxxxxxx >> +S: Maintained >> +F: Documentation/devicetree/bindings/media/starfive,jh7110-camss.yaml >> + >> STARFIVE DEVICETREES >> M: Emil Renner Berthing <kernel@xxxxxxxx> >> S: Maintained >
