Re: [PATCH v2 1/2] arm64: dts: s32g: add SCMI firmware node

Matthias Brugger
2024-01-22T14:39:14Z

On 22/01/2024 15:06, Ghennadi Procopciuc wrote:
> From: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
>
> Linux controls the clocks over SCMI on S32G SoCs. Therefore,
> add the SCMI device tree node and the reserved region for SCMI
> messages.
>
> Signed-off-by: Catalin Udma <catalin-dan.udma@nxp.com>
> Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>

Reviewed-by: Matthias Brugger <mbrugger@suse.com>

> ---
> arch/arm64/boot/dts/freescale/s32g2.dtsi | 27 +++++++++++++++++++++++-
> 1 file changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/freescale/s32g2.dtsi b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> index 5ac1cc9ff50e..ef1a1d61f2ba 100644
> --- a/arch/arm64/boot/dts/freescale/s32g2.dtsi
> +++ b/arch/arm64/boot/dts/freescale/s32g2.dtsi
> @@ -3,7 +3,7 @@
> * NXP S32G2 SoC family
> *
> * Copyright (c) 2021 SUSE LLC
> - * Copyright (c) 2017-2021 NXP
> + * Copyright 2017-2021, 2024 NXP
> */
>
> #include <dt-bindings/interrupt-controller/arm-gic.h>
> @@ -14,6 +14,18 @@ / {
> #address-cells = <2>;
> #size-cells = <2>;
>
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + scmi_buf: shm@d0000000 {
> + compatible = "arm,scmi-shmem";
> + reg = <0x0 0xd0000000 0x0 0x80>;
> + no-map;
> + };
> + };
> +
> cpus {
> #address-cells = <1>;
> #size-cells = <0>;
> @@ -77,6 +89,19 @@ timer {
> };
>
> firmware {
> + scmi {
> + compatible = "arm,scmi-smc";
> + arm,smc-id = <0xc20000fe>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + shmem = <&scmi_buf>;
> +
> + clks: protocol@14 {
> + reg = <0x14>;
> + #clock-cells = <1>;
> + };
> + };
> +
> psci {
> compatible = "arm,psci-1.0";
> method = "smc";