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SubjectRe: [PATCH v3 3/3] dt-bindings: bus: Add Freescale i.MX8qxp pixel link MSI bus binding
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On 04/08/2022 08:11, Liu Ying wrote:
> Freescale i.MX8qxp pixel link MSI bus is a simple memory-mapped bus.
> It is used to access peripherals in i.MX8qm/qxp imaging, LVDS, MIPI
> DSI and HDMI TX subsystems, like I2C controller, PWM controller,
> MIPI DSI controller and Control and Status Registers (CSR) module.
>
> Reference simple-pm-bus bindings and add Freescale i.MX8qxp pixel
> link MSI bus specific bindings.
>
> Signed-off-by: Liu Ying <victor.liu@nxp.com>

Thank you for your patch. There is something to discuss/improve.

> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx8-lpcg.h>
> + #include <dt-bindings/firmware/imx/rsrc.h>
> + bus@56200000 {
> + compatible = "fsl,imx8qxp-display-pixel-link-msi-bus", "simple-pm-bus";
> + reg = <0x56200000 0x20000>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + interrupt-parent = <&dc0_irqsteer>;
> + interrupts = <320>;
> + ranges;
> + clocks = <&dc0_disp_ctrl_link_mst0_lpcg IMX_LPCG_CLK_4>,
> + <&dc0_disp_ctrl_link_mst0_lpcg IMX_LPCG_CLK_4>;
> + clock-names = "msi", "ahb";
> + power-domains = <&pd IMX_SC_R_DC_0>;

The example should be complete, so you should have here children.
Otherwise it is not a bus.

Best regards,
Krzysztof

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