Re: [PATCH v2 08/33] arm64: dts: ti: k3-am64: Enable remote processors at board level

[Wadim Egorov <w.egorov@phytec.de>]

On 8/23/25 7:08 PM, Beleswar Padhi wrote:
> Remote Processors defined in top-level AM64x SoC dtsi files are
> incomplete without the memory carveouts and mailbox assignments which
> are only known at board integration level.
> 
> Therefore, disable the remote processors at SoC level and enable them at
> board level where above information is available.
> 
> Signed-off-by: Beleswar Padhi <b-padhi@ti.com>

Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
Tested-by: Wadim Egorov <w.egorov@phytec.de> # phycore-am64x


> ---
> v2: Changelog:
> 1. Re-ordered patch from [PATCH 26/33] to [PATCH v2 08/33].
> 
> Link to v1:
> https://lore.kernel.org/all/20250814223839.3256046-27-b-padhi@ti.com/
> 
>   arch/arm64/boot/dts/ti/k3-am64-main.dtsi        |  6 ++++++
>   arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi | 12 ++++++++++++
>   arch/arm64/boot/dts/ti/k3-am642-evm.dts         | 12 ++++++++++++
>   arch/arm64/boot/dts/ti/k3-am642-sk.dts          | 12 ++++++++++++
>   arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi     | 12 ++++++++++++
>   arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi  | 12 ++++++++++++
>   6 files changed, 66 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> index c7e5da37486a..d872cc671094 100644
> --- a/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am64-main.dtsi
> @@ -921,6 +921,7 @@ main_r5fss0: r5fss@78000000 {
>   			 <0x78200000 0x00 0x78200000 0x08000>,
>   			 <0x78300000 0x00 0x78300000 0x08000>;
>   		power-domains = <&k3_pds 119 TI_SCI_PD_EXCLUSIVE>;
> +		status = "disabled";
>   
>   		main_r5fss0_core0: r5f@78000000 {
>   			compatible = "ti,am64-r5f";
> @@ -935,6 +936,7 @@ main_r5fss0_core0: r5f@78000000 {
>   			ti,atcm-enable = <1>;
>   			ti,btcm-enable = <1>;
>   			ti,loczrama = <1>;
> +			status = "disabled";
>   		};
>   
>   		main_r5fss0_core1: r5f@78200000 {
> @@ -950,6 +952,7 @@ main_r5fss0_core1: r5f@78200000 {
>   			ti,atcm-enable = <1>;
>   			ti,btcm-enable = <1>;
>   			ti,loczrama = <1>;
> +			status = "disabled";
>   		};
>   	};
>   
> @@ -963,6 +966,7 @@ main_r5fss1: r5fss@78400000 {
>   			 <0x78600000 0x00 0x78600000 0x08000>,
>   			 <0x78700000 0x00 0x78700000 0x08000>;
>   		power-domains = <&k3_pds 120 TI_SCI_PD_EXCLUSIVE>;
> +		status = "disabled";
>   
>   		main_r5fss1_core0: r5f@78400000 {
>   			compatible = "ti,am64-r5f";
> @@ -977,6 +981,7 @@ main_r5fss1_core0: r5f@78400000 {
>   			ti,atcm-enable = <1>;
>   			ti,btcm-enable = <1>;
>   			ti,loczrama = <1>;
> +			status = "disabled";
>   		};
>   
>   		main_r5fss1_core1: r5f@78600000 {
> @@ -992,6 +997,7 @@ main_r5fss1_core1: r5f@78600000 {
>   			ti,atcm-enable = <1>;
>   			ti,btcm-enable = <1>;
>   			ti,loczrama = <1>;
> +			status = "disabled";
>   		};
>   	};
>   
> diff --git a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
> index d9d491b12c33..03c46d74ebb5 100644
> --- a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
> @@ -349,28 +349,40 @@ &main_pktdma {
>   	bootph-all;
>   };
>   
> +&main_r5fss0 {
> +	status = "okay";
> +};
> +
>   &main_r5fss0_core0 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
>   	memory-region = <&main_r5fss0_core0_dma_memory_region>,
>   			<&main_r5fss0_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss0_core1 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
>   	memory-region = <&main_r5fss0_core1_dma_memory_region>,
>   			<&main_r5fss0_core1_memory_region>;
> +	status = "okay";
> +};
> +
> +&main_r5fss1 {
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core0 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
>   	memory-region = <&main_r5fss1_core0_dma_memory_region>,
>   			<&main_r5fss1_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core1 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
>   	memory-region = <&main_r5fss1_core1_dma_memory_region>,
>   			<&main_r5fss1_core1_memory_region>;
> +	status = "okay";
>   };
>   
>   &mcu_m4fss {
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-evm.dts b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> index e01866372293..a07503b192c9 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am642-evm.dts
> @@ -764,28 +764,40 @@ mbox_m4_0: mbox-m4-0 {
>   	};
>   };
>   
> +&main_r5fss0 {
> +	status = "okay";
> +};
> +
>   &main_r5fss0_core0 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
>   	memory-region = <&main_r5fss0_core0_dma_memory_region>,
>   			<&main_r5fss0_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss0_core1 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
>   	memory-region = <&main_r5fss0_core1_dma_memory_region>,
>   			<&main_r5fss0_core1_memory_region>;
> +	status = "okay";
> +};
> +
> +&main_r5fss1 {
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core0 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
>   	memory-region = <&main_r5fss1_core0_dma_memory_region>,
>   			<&main_r5fss1_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core1 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
>   	memory-region = <&main_r5fss1_core1_dma_memory_region>,
>   			<&main_r5fss1_core1_memory_region>;
> +	status = "okay";
>   };
>   
>   &mcu_m4fss {
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-sk.dts b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
> index 1deaa0be0085..ae4a6552644c 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-sk.dts
> +++ b/arch/arm64/boot/dts/ti/k3-am642-sk.dts
> @@ -679,28 +679,40 @@ mbox_m4_0: mbox-m4-0 {
>   	};
>   };
>   
> +&main_r5fss0 {
> +	status = "okay";
> +};
> +
>   &main_r5fss0_core0 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
>   	memory-region = <&main_r5fss0_core0_dma_memory_region>,
>   			<&main_r5fss0_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss0_core1 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
>   	memory-region = <&main_r5fss0_core1_dma_memory_region>,
>   			<&main_r5fss0_core1_memory_region>;
> +	status = "okay";
> +};
> +
> +&main_r5fss1 {
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core0 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
>   	memory-region = <&main_r5fss1_core0_dma_memory_region>,
>   			<&main_r5fss1_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core1 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
>   	memory-region = <&main_r5fss1_core1_dma_memory_region>,
>   			<&main_r5fss1_core1_memory_region>;
> +	status = "okay";
>   };
>   
>   &mcu_m4fss {
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi b/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi
> index a5cec9a07510..d0c1e4dc1da7 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am642-sr-som.dtsi
> @@ -488,28 +488,40 @@ AM64X_IOPAD(0x02a8, PIN_OUTPUT, 0) /* USB0_DRVVBUS.USB0_DRVVBUS */
>   	};
>   };
>   
> +&main_r5fss0 {
> +	status = "okay";
> +};
> +
>   &main_r5fss0_core0 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
>   	memory-region = <&main_r5fss0_core0_dma_memory_region>,
>   			<&main_r5fss0_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss0_core1 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
>   	memory-region = <&main_r5fss0_core1_dma_memory_region>,
>   			<&main_r5fss0_core1_memory_region>;
> +	status = "okay";
> +};
> +
> +&main_r5fss1 {
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core0 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
>   	memory-region = <&main_r5fss1_core0_dma_memory_region>,
>   			<&main_r5fss1_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core1 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
>   	memory-region = <&main_r5fss1_core1_dma_memory_region>,
>   			<&main_r5fss1_core1_memory_region>;
> +	status = "okay";
>   };
>   
>   /* SoC default UART console */
> diff --git a/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi b/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi
> index 828d815d6bdf..876cbb21961d 100644
> --- a/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi
> +++ b/arch/arm64/boot/dts/ti/k3-am642-tqma64xxl.dtsi
> @@ -167,28 +167,40 @@ mbox_m4_0: mbox-m4-0 {
>   	};
>   };
>   
> +&main_r5fss0 {
> +	status = "okay";
> +};
> +
>   &main_r5fss0_core0 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
>   	memory-region = <&main_r5fss0_core0_dma_memory_region>,
>   			<&main_r5fss0_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss0_core1 {
>   	mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
>   	memory-region = <&main_r5fss0_core1_dma_memory_region>,
>   			<&main_r5fss0_core1_memory_region>;
> +	status = "okay";
> +};
> +
> +&main_r5fss1 {
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core0 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
>   	memory-region = <&main_r5fss1_core0_dma_memory_region>,
>   			<&main_r5fss1_core0_memory_region>;
> +	status = "okay";
>   };
>   
>   &main_r5fss1_core1 {
>   	mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
>   	memory-region = <&main_r5fss1_core1_dma_memory_region>,
>   			<&main_r5fss1_core1_memory_region>;
> +	status = "okay";
>   };
>   
>   &ospi0 {