Re: [PATCH 6/9] arm64: dts: rockchip: add missing rk3568 cru phandles

Heiko Stübner
2021-07-28T14:10:41Z

Hi Peter,

Am Mittwoch, 28. Juli 2021, 15:55:31 CEST schrieb Peter Geis:
> The grf and pmugrf phandles are necessary for the pmucru and cru to
> modify clocks. Add these phandles to permit adjusting the clock rates
> and muxes.
>
> Signed-off-by: Peter Geis <pgwipeout@gmail.com>
> ---
> arch/arm64/boot/dts/rockchip/rk356x.dtsi | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> index 0905fac0726a..8ba0516eedd8 100644
> --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> @@ -218,6 +218,8 @@ grf: syscon@fdc60000 {
> pmucru: clock-controller@fdd00000 {
> compatible = "rockchip,rk3568-pmucru";
> reg = <0x0 0xfdd00000 0x0 0x1000>;
> + rockchip,grf = <&grf>;
> + rockchip,pmugrf = <&pmugrf>;

I don't think the pmucru needs both and in fact the mainline
clock driver should just reference its specific grf at all, i.e.
pmucru -> pmugrf (via the rockchip,grf handle)
cru -> grf

I've not seen anything breaking this scope so far.

Heiko

> #clock-cells = <1>;
> #reset-cells = <1>;
> };
> @@ -225,6 +227,7 @@ pmucru: clock-controller@fdd00000 {
> cru: clock-controller@fdd20000 {
> compatible = "rockchip,rk3568-cru";
> reg = <0x0 0xfdd20000 0x0 0x1000>;
> + rockchip,grf = <&grf>;
> #clock-cells = <1>;
> #reset-cells = <1>;
> };