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    Subject[PATCH v4 10/11] media: dt-bindings: Add DT bindings for TI J721E CSI2RX driver
    Date
    TI's J721E uses the Cadence CSI2RX and DPHY peripherals to facilitate
    capture over a CSI-2 bus. The TI CSI2RX platform driver glues all the
    parts together.

    Signed-off-by: Pratyush Yadav <p.yadav@ti.com>

    ---

    (no changes since v2)

    Changes in v2:
    - Rename to ti,j721e-csi2rx.yaml
    - Add an entry in MAINTAINERS.
    - Add a description for the binding.
    - Change compatible to ti,j721e-csi2rx to make it SoC specific.
    - Remove description from dmas, reg, power-domains.
    - Remove a limit of 2 from #address-cells and #size-cells.
    - Fix add ^ to csi-bridge subnode regex.
    - Make ranges mandatory.
    - Add unit address in example.
    - Add a reference to cdns,csi2rx in csi-bridge subnode.
    - Expand the example to include the csi-bridge subnode as well.
    - Re-order subject prefixes.

    .../bindings/media/ti,j721e-csi2rx.yaml | 101 ++++++++++++++++++
    MAINTAINERS | 1 +
    2 files changed, 102 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml

    diff --git a/Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
    new file mode 100644
    index 000000000000..db87cfd65bed
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
    @@ -0,0 +1,101 @@
    +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/media/ti,j721e-csi2rx.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: TI J721E CSI2RX Wrapper Device Tree Bindings
    +
    +description: |
    + The TI J721E CSI2RX Wrapper is a wrapper around Cadence CSI2RX bridge that
    + enables sending captured frames to memory over PSI-L DMA. In the J721E
    + Technical Reference Manual (SPRUIL1B) it is referred to as "SHIM" under the
    + CSI_RX_IF section.
    +
    +maintainers:
    + - Pratyush Yadav <p.yadav@ti.com>
    +
    +properties:
    + compatible:
    + items:
    + - const: ti,j721e-csi2rx
    +
    + dmas:
    + maxItems: 1
    +
    + dma-names:
    + items:
    + - const: rx0
    +
    + reg:
    + maxItems: 1
    +
    + power-domains:
    + maxItems: 1
    +
    + ranges: true
    +
    + "#address-cells": true
    +
    + "#size-cells": true
    +
    +patternProperties:
    + "^csi-bridge@":
    + type: object
    + description: CSI2 bridge node.
    + $ref: cdns,csi2rx.yaml#
    +
    +required:
    + - compatible
    + - reg
    + - dmas
    + - dma-names
    + - power-domains
    + - ranges
    + - "#address-cells"
    + - "#size-cells"
    +
    +additionalProperties: false
    +
    +examples:
    + - |
    + #include <dt-bindings/soc/ti,sci_pm_domain.h>
    +
    + ti_csi2rx0: ticsi2rx@4500000 {
    + compatible = "ti,j721e-csi2rx";
    + dmas = <&main_udmap 0x4940>;
    + dma-names = "rx0";
    + reg = <0x4500000 0x1000>;
    + power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>;
    + #address-cells = <1>;
    + #size-cells = <1>;
    + ranges;
    +
    + cdns_csi2rx: csi-bridge@4504000 {
    + compatible = "cdns,csi2rx";
    + reg = <0x4504000 0x1000>;
    + clocks = <&k3_clks 26 2>, <&k3_clks 26 0>, <&k3_clks 26 2>,
    + <&k3_clks 26 2>, <&k3_clks 26 3>, <&k3_clks 26 3>;
    + clock-names = "sys_clk", "p_clk", "pixel_if0_clk",
    + "pixel_if1_clk", "pixel_if2_clk", "pixel_if3_clk";
    + phys = <&dphy0>;
    + phy-names = "dphy";
    +
    + ports {
    + #address-cells = <1>;
    + #size-cells = <0>;
    +
    + csi2_0: port@0 {
    +
    + reg = <0>;
    +
    + csi2rx0_in_sensor: endpoint {
    + remote-endpoint = <&csi2_cam0>;
    + bus-type = <4>; /* CSI2 DPHY. */
    + clock-lanes = <0>;
    + data-lanes = <1 2>;
    + };
    + };
    + };
    + };
    + };
    diff --git a/MAINTAINERS b/MAINTAINERS
    index 7ee236cbd016..7b3e557c9d3b 100644
    --- a/MAINTAINERS
    +++ b/MAINTAINERS
    @@ -18716,6 +18716,7 @@ TI J721E CSI2RX DRIVER
    M: Pratyush Yadav <p.yadav@ti.com>
    L: linux-media@vger.kernel.org
    S: Supported
    +F: Documentation/devicetree/bindings/media/ti,j721e-csi2rx.yaml
    F: drivers/media/platform/ti/j721e-csi2rx/

    TI DAVINCI MACHINE SUPPORT
    --
    2.33.0
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