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Message-ID: <da10e2fc-3179-4bd5-88ed-b4d5f64a7191@gmail.com>
Date: Wed, 20 Dec 2023 12:16:14 +0100
From: Alex Bee <knaerzche@...il.com>
To: Andy Yan <andyshrk@....com>, heiko@...ech.de
Cc: krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
zhengxing@...k-chips.com, Andy Yan <andy.yan@...k-chips.com>
Subject: Re: [PATCH v2 1/3] ARM: dts: rockchip: Add psci for rk3036
Hi Andy,
Am 18.12.23 um 11:55 schrieb Andy Yan:
> From: Andy Yan <andy.yan@...k-chips.com>
>
> The system will hang at bringup secondary CPUs
> without psci node.
>
> Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
>
> ---
>
> (no changes since v1)
>
> arch/arm/boot/dts/rockchip/rk3036.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm/boot/dts/rockchip/rk3036.dtsi b/arch/arm/boot/dts/rockchip/rk3036.dtsi
> index 78686fc72ce6..5344803442a1 100644
> --- a/arch/arm/boot/dts/rockchip/rk3036.dtsi
> +++ b/arch/arm/boot/dts/rockchip/rk3036.dtsi
> @@ -67,6 +67,11 @@ display-subsystem {
> ports = <&vop_out>;
> };
>
> + psci {
> + compatible = "arm,psci-1.0";
> + method = "smc";
> + };
> +
I don't think that's an good idea. You most likely need that because you
have downstream bootloader installed on this board. PSCI implementation
takes place in TEE-OS for Rockchips ARM SoCs. There is no support for
RK3036 in upstream op-tee OS. It's pretty much the same for RK3128 and
RK3288.
If you use upstream u-boot it should be good as-is.
Alex
> timer {
> compatible = "arm,armv7-timer";
> arm,cpu-registers-not-fw-configured;
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