Re: [PATCH v7 3/6] dt-bindings: mvebu-uart: document DT bindings for marvell, armada-3700-uart-clock

Stephen Boyd
2021-10-15T00:14:27Z

Quoting Pali Rohár (2021-09-30 02:58:35)
> diff --git a/Documentation/devicetree/bindings/clock/marvell,armada-3700-uart-clock.yaml b/Documentation/devicetree/bindings/clock/marvell,armada-3700-uart-clock.yaml
> new file mode 100644
> index 000000000000..175f5c8f2bc5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/marvell,armada-3700-uart-clock.yaml
> @@ -0,0 +1,59 @@
[..]
> + '#clock-cells':
> + const: 1
> +
> +required:
> + - compatible
> + - reg
> + - clocks
> + - clock-names
> + - '#clock-cells'
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + uartclk: clock-controller@12010 {

The uart device is at 0x12000 and the clock-controller is at 0x12010?
This looks like a node is being put into DT to represent a clk driver.
Why can't we register a clk from the uart device driver itself? I think
we talked about this a month or two ago but it still isn't clear to me.

> + compatible = "marvell,armada-3700-uart-clock";
> + reg = <0x12010 0x4>, <0x12210 0x4>;
> + clocks = <&tbg 0>, <&tbg 1>, <&tbg 2>, <&tbg 3>, <&xtalclk>;
> + clock-names = "TBG-A-P", "TBG-B-P", "TBG-A-S", "TBG-B-S", "xtal";
> + #clock-cells = <1>;
> + };
> --
> 2.20.1