[PATCH 1/2] arm64: dts: ti: k3-am65: mark dss as dma-coherent

Nishanth Menon nmenon at kernel.org
Wed Aug 26 20:13:52 EDT 2020


On 16:16-20200826, Tomi Valkeinen wrote:
> DSS is IO coherent on AM65, so we can mark it as such with
> 'dma-coherent' property in the DT file.
> 
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
> ---
>  arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
> index 9edfae5944f7..efd3f18f4be3 100644
> --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
> @@ -847,6 +847,8 @@ dss: dss at 04a00000 {
>  
>  		status = "disabled";
>  
> +		dma-coherent;
> +
>  		dss_ports: ports {
>  			#address-cells = <1>;
>  			#size-cells = <0>;
Could you look closer at the dss node a bit? dtbs_check results in a
change in error (on next-20200824):
-/workdir/arch/arm64/boot/dts/ti/k3-am654-base-board.dt.yaml: dss at 04a00000: 'assigned-clock-parents', 'assigned-clocks' do not match any of the regexes: 'pinctrl-[0-9]+'
+/workdir/arch/arm64/boot/dts/ti/k3-am654-base-board.dt.yaml: dss at 04a00000: 'assigned-clock-parents', 'assigned-clocks', 'dma-coherent' do not match any of the regexes: 'pinctrl-[0-9]+'

I am not sure what extent is the dss conversion to yaml done.
-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D



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