Hi Laurent,
Thanks for the feedback.
> Subject: Re: [PATCH v2 1/2] dt-bindings: display: bridge: Document RZ/G2L
> MIPI DSI TX bindings
>
> Hi Biju,
>
> Thank you for the patch.
>
> On Mon, Mar 28, 2022 at 07:49:30AM +0100, Biju Das wrote:
> > The RZ/G2L MIPI DSI TX is embedded in the Renesas RZ/G2L family SoC's.
> > It can operate in DSI mode, with up to four data lanes.
> >
> > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > ---
> > v1->v2:
> > * Added full path for dsi-controller.yaml
> > * Modeled DSI + D-PHY as single block and updated reg property
> > * Fixed typo D_PHY->D-PHY
> > * Updated description
> > * Added interrupts and interrupt-names and updated the example
> > RFC->v1:
> > * Added a ref to dsi-controller.yaml.
> > RFC:-
> > *
> > ---
> > .../bindings/display/bridge/renesas,dsi.yaml | 175
> > ++++++++++++++++++
> > 1 file changed, 175 insertions(+)
> > create mode 100644
> > Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
> >
> > diff --git
> > a/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
> > b/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yaml
> > new file mode 100644
> > index 000000000000..eebbf617c484
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/display/bridge/renesas,dsi.yam
> > +++ l
> > @@ -0,0 +1,175 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> >
> > +
> > +title: Renesas RZ/G2L MIPI DSI Encoder
> > +
> > +maintainers:
> > + - Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > +
> > +description: |
> > + This binding describes the MIPI DSI encoder embedded in the Renesas
> > + RZ/G2L alike family of SoC's. The encoder can operate in DSI mode,
> > +with
> > + up to four data lanes.
> > +
> > +allOf:
> > + - $ref: /schemas/display/dsi-controller.yaml#
> > +
> > +properties:
> > + compatible:
> > + enum:
> > + - renesas,rzg2l-mipi-dsi # RZ/G2L and RZ/V2L
> > +
> > + reg:
> > + maxItems: 1
> > +
> > + interrupts:
> > + items:
> > + - description: Sequence operation channel 0 interrupt
> > + - description: Sequence operation channel 1 interrupt
> > + - description: Video-Input operation channel 1 interrupt
> > + - description: DSI Packet Receive interrupt
> > + - description: DSI Fatal Error interrupt
> > + - description: DSI D-PHY PPI interrupt
> > + - description: Debug interrupt
> > +
> > + interrupt-names:
> > + items:
> > + - const: seq0
> > + - const: seq1
> > + - const: vin1
> > + - const: rcv
> > + - const: ferr
> > + - const: ppi
> > + - const: debug
> > +
> > + clocks:
> > + items:
> > + - description: DSI D-PHY PLL multiplied clock
> > + - description: DSI D-PHY system clock
> > + - description: DSI AXI bus clock
> > + - description: DSI Register access clock
> > + - description: DSI Video clock
> > + - description: DSI D-PHY Escape mode Receive clock
>
> Isn't this the escape mode *transmit* clock ?
Yep, There is a mismatch between clk document and hardware manual.
I have reported this issue to HW team for fixing the clk document.
>
> > +
> > + clock-names:
> > + items:
> > + - const: pllclk
> > + - const: sysclk
> > + - const: aclk
> > + - const: pclk
> > + - const: vclk
> > + - const: lpclk
> > +
> > + resets:
> > + items:
> > + - description: MIPI_DSI_CMN_RSTB
> > + - description: MIPI_DSI_ARESET_N
> > + - description: MIPI_DSI_PRESET_N
> > +
> > + reset-names:
> > + items:
> > + - const: rst
> > + - const: arst
> > + - const: prst
> > +
> > + power-domains:
> > + maxItems: 1
> > +
> > + ports:
> > + $ref: /schemas/graph.yaml#/properties/ports
> > +
> > + properties:
> > + port@0:
> > + $ref: /schemas/graph.yaml#/properties/port
> > + description: Parallel input port
> > +
> > + port@1:
> > + $ref: /schemas/graph.yaml#/$defs/port-base
> > + unevaluatedProperties: false
> > + description: DSI output port
> > +
> > + properties:
> > + endpoint:
> > + $ref: /schemas/media/video-interfaces.yaml#
> > + unevaluatedProperties: false
> > +
> > + properties:
> > + data-lanes:
> > + minItems: 1
> > + maxItems: 4
>
> You should specify the acceptable values, especially given that the
> hardware doesn't seem to support lane reordering.
OK.
>
> > +
> > + required:
> > + - data-lanes
> > +
> > + required:
> > + - port@0
> > + - port@1
> > +
> > +required:
> > + - compatible
> > + - reg
> > + - interrupts
> > + - interrupt-names
> > + - clocks
> > + - clock-names
> > + - resets
> > + - reset-names
> > + - power-domains
> > + - ports
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > + - |
> > + #include <dt-bindings/interrupt-controller/arm-gic.h>
> > + #include <dt-bindings/clock/r9a07g044-cpg.h>
>
> Could you please swap those two lines to get them sorted alphabetically ?
OK.
Cheers,
Biju
>
> With these comments addressed,
>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
>
> > +
> > + dsi0: dsi@10850000 {
> > + compatible = "renesas,rzg2l-mipi-dsi";
> > + reg = <0x10850000 0x20000>;
> > + interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 147 IRQ_TYPE_LEVEL_HIGH>,
> > + <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
> > + interrupt-names = "seq0", "seq1", "vin1", "rcv",
> > + "ferr", "ppi", "debug";
> > + clocks = <&cpg CPG_MOD R9A07G044_MIPI_DSI_PLLCLK>,
> > + <&cpg CPG_MOD R9A07G044_MIPI_DSI_SYSCLK>,
> > + <&cpg CPG_MOD R9A07G044_MIPI_DSI_ACLK>,
> > + <&cpg CPG_MOD R9A07G044_MIPI_DSI_PCLK>,
> > + <&cpg CPG_MOD R9A07G044_MIPI_DSI_VCLK>,
> > + <&cpg CPG_MOD R9A07G044_MIPI_DSI_LPCLK>;
> > + clock-names = "pllclk", "sysclk", "aclk", "pclk", "vclk",
> "lpclk";
> > + resets = <&cpg R9A07G044_MIPI_DSI_CMN_RSTB>,
> > + <&cpg R9A07G044_MIPI_DSI_ARESET_N>,
> > + <&cpg R9A07G044_MIPI_DSI_PRESET_N>;
> > + reset-names = "rst", "arst", "prst";
> > + power-domains = <&cpg>;
> > +
> > + ports {
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > +
> > + port@0 {
> > + reg = <0>;
> > + dsi0_in: endpoint {
> > + remote-endpoint = <&du_out_dsi0>;
> > + };
> > + };
> > +
> > + port@1 {
> > + reg = <1>;
> > + dsi0_out: endpoint {
> > + data-lanes = <1 2 3 4>;
> > + remote-endpoint = <&adv7535_in>;
> > + };
> > + };
> > + };
> > + };
> > +...
>
> --
> Regards,
>
> Laurent Pinchart
