[PATCH] arm: dts: k3-j721e-mcu-wakeup: Add MCU domain ESM instance

[Kumar, Udit]

On 10/13/2023 3:59 PM, Neha Malcom Francis wrote:
> Currently J721E defines only the main_esm in DTS. Add node for mcu_esm
> as well.
>
> According to J721E TRM (12.11.2.2 ESM Environment) [1], we see that the
> interrupt line from ESMi (main_esm) is routed to MCU_ESM (mcu_esm). This
> is MCU_ESM0_LVL_IN_95 with interrupt ID 95. Configure mcu_esm
> accordingly so that errors from main_esm are routed to mcu_esm and
> handled.
>
> [1] https://www.ti.com/lit/zip/spruil1
>
> Signed-off-by: Neha Malcom Francis <n-francis at ti.com>
> ---
> Upstream kernel effort:
> https://lore.kernel.org/lkml/20230926142810.602384-1-n-francis@ti.com/


should part of next u-boot, kernel sync, no?


>
>   arch/arm/dts/k3-j721e-mcu-wakeup.dtsi | 7 +++++++
>   1 file changed, 7 insertions(+)
>
> diff --git a/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi b/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi
> index 05d6ef127b..fa8af20c78 100644
> --- a/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi
> +++ b/arch/arm/dts/k3-j721e-mcu-wakeup.dtsi
> @@ -671,4 +671,11 @@
>   		power-domains = <&k3_pds 154 TI_SCI_PD_EXCLUSIVE>;
>   		#thermal-sensor-cells = <1>;
>   	};
> +
> +	mcu_esm: esm at 40800000 {
> +		compatible = "ti,j721e-esm";
> +		reg = <0x00 0x40800000 0x00 0x1000>;
> +		ti,esm-pins = <95>;
> +		bootph-pre-ram;
> +	};
>   };