Re: [PATCH v2 4/4] ARM: dts: qcom: msm8226: Add IMEM node

[Luca Weiss]

On Samstag, 20. Mai 2023 14:19:33 CEST Matti Lehtimäki wrote:
> This enables userspace to signal the bootloader to go into the
> bootloader or recovery mode.
> 
> The magic values can be found in both the downstream kernel and the LK
> kernel (bootloader).
> 
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@xxxxxxxxx>

Reviewed-by: Luca Weiss <luca@xxxxxxxxx>

> ---
> Changes in v2:
>   - Always enable IMEM node
>   - Move reboot-mode magic numbers to platform,
>     those should be always the same
> ---
>  arch/arm/boot/dts/qcom-msm8226.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-msm8226.dtsi
> b/arch/arm/boot/dts/qcom-msm8226.dtsi index 8644540f5aae..284b7c666fea
> 100644
> --- a/arch/arm/boot/dts/qcom-msm8226.dtsi
> +++ b/arch/arm/boot/dts/qcom-msm8226.dtsi
> @@ -641,6 +641,20 @@ smd-edge {
>  				label = "lpass";
>  			};
>  		};
> +
> +		sram@fe805000 {
> +			compatible = "qcom,msm8226-imem", "syscon", 
"simple-mfd";
> +			reg = <0xfe805000 0x1000>;
> +
> +			reboot-mode {
> +				compatible = "syscon-reboot-mode";
> +				offset = <0x65c>;
> +
> +				mode-bootloader = <0x77665500>;
> +				mode-normal     = <0x77665501>;
> +				mode-recovery   = <0x77665502>;
> +			};
> +		};
>  	};
> 
>  	timer {