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Date: Mon, 13 Dec 2021 16:58:40 -0600
From: Rob Herring <robh@...nel.org>
To: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Cc: Mauro Carvalho Chehab <mchehab@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Hans Verkuil <hverkuil-cisco@...all.nl>,
Niklas Söderlund
<niklas.soderlund+renesas@...natech.se>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
linux-media@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>,
Biju Das <biju.das.jz@...renesas.com>
Subject: Re: [RFC PATCH 1/3] media: dt-bindings: media: Document RZ/G2L CRU
block
On Tue, Dec 07, 2021 at 01:23:49AM +0000, Lad Prabhakar wrote:
> Document the CRU block found on Renesas RZ/G2L SoC's.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> ---
> .../bindings/media/renesas,rzg2l-cru.yaml | 227 ++++++++++++++++++
> 1 file changed, 227 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> new file mode 100644
> index 000000000000..7b2835810516
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/renesas,rzg2l-cru.yaml
> @@ -0,0 +1,227 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +# Copyright (C) 2021 Renesas Electronics Corp.
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/renesas,rzg2l-cru.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/G2L Camera Data Receiving Unit (CRU)
> +
> +maintainers:
> + - Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> +
> +description:
> + The RZ/G2L Camera Data Receiving Unit (CRU) device provides video input
> + capabilities for the Renesas RZ/G2L family of devices.
> +
> + Depending on the instance the Image Processing input is connected to
> + external SoC pins or to a CSI-2 receiver.
> +
> +properties:
> + compatible:
> + oneOf:
> + - items:
Don't need oneOf with only 1 entry.
> + - enum:
> + - renesas,r9a07g044-cru # RZ/G2{L,LC}
> + - const: renesas,rzg2l-cru
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 4
> +
> + interrupt-names:
> + items:
> + - const: csi2_link_int
> + - const: image_conv_int
> + - const: image_conv_err_int
> + - const: axi_mst_err_int
_int is redundant.
> +
> + clocks:
> + items:
> + - description: Internal clock for connecting CRU and MIPI
> + - description: CRU Main clock
> + - description: CPU Register access clock
> + - description: CRU image transfer clock
> +
> + clock-names:
> + items:
> + - const: sysclk
> + - const: vclk
> + - const: pclk
> + - const: aclk
> +
> + power-domains:
> + maxItems: 1
> +
> + resets:
> + items:
> + - description: CRU_CMN_RSTB reset terminal
> + - description: CRU_PRESETN reset terminal
> + - description: CRU_ARESETN reset terminal
> +
> + reset-names:
> + items:
> + - const: cmn-rstb
> + - const: presetn
> + - const: aresetn
> +
> + ports:
> + $ref: /schemas/graph.yaml#/properties/ports
> +
> + properties:
> + port@0:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description:
> + Input port node, single endpoint describing a parallel input source.
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + hsync-active: true
> +
> + vsync-active: true
> +
> + bus-width: true
> +
> + data-shift: true
> +
> + port@1:
> + $ref: /schemas/graph.yaml#/$defs/port-base
> + unevaluatedProperties: false
> + description:
> + Input port node, single endpoint describing the CSI-2 transmitter.
> +
> + properties:
> + endpoint:
> + $ref: video-interfaces.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + clock-lanes:
> + maxItems: 1
> +
> + data-lanes:
> + maxItems: 1
> +
> + required:
> + - clock-lanes
> + - data-lanes
> +
> + port@2:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Output port node, describing the RZ/G2L Image Processing module
> + connected the CSI-2 receiver
> +
> + properties:
> + endpoint@0:
Unless you have mutiple endpoints to define or endpoint properties to
add, you don't need to specify anything more than the port.
> + $ref: /schemas/graph.yaml#/properties/endpoint
> + description: Endpoint connected to CSI2.
> +
> + anyOf:
> + - required:
> + - endpoint@0
> +
> + port@3:
> + $ref: /schemas/graph.yaml#/properties/port
> + description:
> + Input port node, describing the RZ/G2L CSI-2 module connected the
> + Image Processing block.
> +
> + properties:
> + endpoint@0:
> + $ref: /schemas/graph.yaml#/properties/endpoint
> + description: Endpoint connected to CSI2.
> +
> + anyOf:
> + - required:
> + - endpoint@0
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - interrupt-names
> + - clocks
> + - clock-names
> + - resets
> + - reset-names
> + - power-domains
> +
> +additionalProperties: false
> +
> +examples:
> + # Device node example with CSI-2
> + - |
> + #include <dt-bindings/clock/r9a07g044-cpg.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> + cru: video@...30000 {
> + compatible = "renesas,r9a07g044-cru", "renesas,rzg2l-cru";
> + reg = <0x10830000 0x10000>;
> + interrupts = <GIC_SPI 166 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "csi2_link_int", "image_conv_int",
> + "image_conv_err_int", "axi_mst_err_int";
> + clocks = <&cpg CPG_MOD R9A07G044_CRU_SYSCLK>,
> + <&cpg CPG_MOD R9A07G044_CRU_VCLK>,
> + <&cpg CPG_MOD R9A07G044_CRU_PCLK>,
> + <&cpg CPG_MOD R9A07G044_CRU_ACLK>;
> + clock-names = "sysclk", "vclk", "pclk", "aclk";
> + power-domains = <&cpg>;
> + resets = <&cpg R9A07G044_CRU_CMN_RSTB>,
> + <&cpg R9A07G044_CRU_PRESETN>,
> + <&cpg R9A07G044_CRU_ARESETN>;
> + reset-names = "cmn-rstb", "presetn", "aresetn";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@1 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <1>;
> +
> + csi2_in: endpoint@0 {
> + reg = <0>;
> + clock-lanes = <0>;
> + data-lanes = <1 2>;
> + remote-endpoint = <&ov5645_ep>;
> + };
> + };
> +
> + port@2 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <2>;
> +
> + csi2cru: endpoint@0 {
> + reg = <0>;
> + remote-endpoint= <&crucsi2>;
> + };
> + };
> +
> + port@3 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <3>;
> +
> + crucsi2: endpoint@0 {
> + reg = <0>;
> + remote-endpoint= <&csi2cru>;
> + };
> + };
> + };
> + };
> --
> 2.17.1
>
>
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