| Message ID | 20240930215001.1999212-3-heiko@sntech.de (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | rk3328 cru dt-binding conversion | expand |
On 30/09/2024 23:50, Heiko Stuebner wrote: > From: Johan Jonker <jbx6244@gmail.com> > > The cru node references undocumented compatibles of "rockchip,cru" and also > marks it as syscon. > > A general rockchip,cru is way too generic to ever be used anywhere, so > needs to go away, similarly the cru should not be written to from other > places, instead regular clock routines should be used. > > Both mainline Linux as well as the vendor-kernel up to their 6.1 branch > only reference the cru via the normal assigned-clocks, clocks and resets > properties and do not get a syscon from the node. > > Similarly, there is no syscon access by compatible both in mainline > nor the vendor-kernel up to their 6.1 branch, through either the > rockchip,rk3328-cru nor rockchip,cru compatibles. > > So these two really are unused in all publically visible places. > > Sidenote: the vendor-kernel does pretty crazy stuff in the camera interface > and tdm driver, where they map the cru separately and set clock muxes and > gates directly. This should of course never reach mainline anyway. > > Signed-off-by: Johan Jonker <jbx6244@gmail.com> > [update commit message, to explain the unused compatibles] > Signed-off-by: Heiko Stuebner <heiko@sntech.de> > --- Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Best regards, Krzysztof
diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi index 16b4faa22e4f..cf98f1af659e 100644 --- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi @@ -813,7 +813,7 @@ hdmiphy: phy@ff430000 { }; cru: clock-controller@ff440000 { - compatible = "rockchip,rk3328-cru", "rockchip,cru", "syscon"; + compatible = "rockchip,rk3328-cru"; reg = <0x0 0xff440000 0x0 0x1000>; rockchip,grf = <&grf>; #clock-cells = <1>;