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SubjectRe: [PATCH v4 3/3] arm64: dts: reset: add microchip sparx5 switch reset driver
On Wed, Jan 20, 2021 at 09:19:21AM +0100, Steen Hegelund wrote:
> This provides reset driver support for the Microchip Sparx5 PCB134 and
> PCB135 reference boards.

This isn't a compatible change. You need an explanation why that's okay
if that's intended.

>
> Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
> ---
> arch/arm64/boot/dts/microchip/sparx5.dtsi | 14 +++++++++++---
> 1 file changed, 11 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi
> index 380281f312d8..4edbb9fcdce0 100644
> --- a/arch/arm64/boot/dts/microchip/sparx5.dtsi
> +++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi
> @@ -132,9 +132,17 @@ mux: mux-controller {
> };
> };
>
> - reset@611010008 {
> - compatible = "microchip,sparx5-chip-reset";
> - reg = <0x6 0x11010008 0x4>;
> + gcb_ctrl: syscon@611010000 {
> + compatible = "microchip,sparx5-gcb-syscon", "syscon";
> + reg = <0x6 0x11010000 0x10000>;
> + };
> +
> + reset: reset-controller@0 {
> + compatible = "microchip,sparx5-switch-reset";
> + reg = <0x6 0x0 0x0>;

Your register length is 0?

> + #reset-cells = <1>;
> + cpu-syscon = <&cpu_ctrl>;

Can't you accomplish the same thing adding these to
"microchip,sparx5-chip-reset"? Or possibly as a child node.

Define nodes based on h/w blocks, not as containers of things you happen
to want for some driver.

> + gcb-syscon = <&gcb_ctrl>;
> };
>
> uart0: serial@600100000 {
> --
> 2.29.2
>

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