Re: [PATCH] arm64: zynqmp: Add memory reserved node for k26 Kria SOM board

[Michal Simek <michal.simek@amd.com>]

On 6/12/23 09:41, Michal Simek wrote:
> From: Sharath Kumar Dasari <sharath.kumar.dasari@xilinx.com>
> 
> PMUFW (Power Management Unit firmware) requires top 1MB of the lower DDR
> memory reserved for its operation, this is missing in k26 SM static dts
> file. Bootloader or kernel shouldn't access this location.
> 
> Signed-off-by: Sharath Kumar Dasari <sharath.kumar.dasari@xilinx.com>
> Signed-off-by: Michal Simek <michal.simek@amd.com>
> ---
> 
>   arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts | 11 +++++++++++
>   1 file changed, 11 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
> index c1f21b0e1760..c4774a42d5fc 100644
> --- a/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
> +++ b/arch/arm64/boot/dts/xilinx/zynqmp-sm-k26-revA.dts
> @@ -50,6 +50,17 @@ memory@0 {
>   		reg = <0x0 0x0 0x0 0x80000000>, <0x8 0x00000000 0x0 0x80000000>;
>   	};
>   
> +	reserved-memory {
> +		#address-cells = <2>;
> +		#size-cells = <2>;
> +		ranges;
> +
> +		pmu_region: pmu@7ff00000 {
> +			reg = <0x0 0x7ff00000 0x0 0x100000>;
> +			no-map;
> +		};
> +	};
> +
>   	gpio-keys {
>   		compatible = "gpio-keys";
>   		autorepeat;

Applied.
M