From 6bd0449be319a29096f3ee7cd415f8b6b28104c7 Mon Sep 17 00:00:00 2001 From: Beleswar Padhi Date: Mon, 8 Sep 2025 19:58:22 +0530 Subject: [PATCH] arm64: dts: ti: k3-am62p-ti-ipc-firmware: Refactor IPC cfg into new dtsi The TI K3 AM62P SoCs have multiple programmable remote processors like R5Fs. The TI SDKs for AM62P SoCs offer sample firmwares which could be run on these cores to demonstrate an "echo" IPC test. Those firmware require certain memory carveouts to be reserved from system memory, timers to be reserved, and certain mailbox configurations for interrupt based messaging. These configurations could be different for a different firmware. While DT is not meant for system configurations, at least refactor these configurations from board level DTS into a dtsi for now. This dtsi for TI IPC firmware is board-independent and can be applied to all boards from the same SoC Family. This gets rid of code duplication and allows more freedom for users developing custom firmware (or no firmware) to utilize system resources better; easily by swapping out this dtsi. To maintain backward compatibility, the dtsi is included in all boards. Signed-off-by: Beleswar Padhi Tested-by: Judith Mendez Reviewed-by: Dhruva Gole Link: https://patch.msgid.link/20250908142826.1828676-31-b-padhi@ti.com Signed-off-by: Nishanth Menon --- .../boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi | 60 +++++++++++++++++++ arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi | 54 +---------------- arch/arm64/boot/dts/ti/k3-am62p5-sk.dts | 54 +---------------- 3 files changed, 64 insertions(+), 104 deletions(-) create mode 100644 arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi diff --git a/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi new file mode 100644 index 0000000000000..d29a5dbe13ef7 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-am62p-ti-ipc-firmware.dtsi @@ -0,0 +1,60 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * Device Tree Source for enabling IPC using TI SDK firmware on AM62P SoCs + * + * Copyright (C) 2023-2025 Texas Instruments Incorporated - https://www.ti.com/ + */ + +&reserved_memory { + mcu_r5fss0_core0_dma_memory_region: memory@9b800000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9b800000 0x00 0x100000>; + no-map; + }; + + mcu_r5fss0_core0_memory_region: memory@9b900000 { + compatible = "shared-dma-pool"; + reg = <0x00 0x9b900000 0x00 0xf00000>; + no-map; + }; +}; + +&mailbox0_cluster0 { + status = "okay"; + + mbox_r5_0: mbox-r5-0 { + ti,mbox-rx = <0 0 0>; + ti,mbox-tx = <1 0 0>; + }; +}; + +&mailbox0_cluster1 { + status = "okay"; + + mbox_mcu_r5_0: mbox-mcu-r5-0 { + ti,mbox-rx = <0 0 0>; + ti,mbox-tx = <1 0 0>; + }; +}; + +&wkup_r5fss0 { + status = "okay"; +}; + +&wkup_r5fss0_core0 { + mboxes = <&mailbox0_cluster0 &mbox_r5_0>; + memory-region = <&wkup_r5fss0_core0_dma_memory_region>, + <&wkup_r5fss0_core0_memory_region>; + status = "okay"; +}; + +&mcu_r5fss0 { + status = "okay"; +}; + +&mcu_r5fss0_core0 { + mboxes = <&mailbox0_cluster1 &mbox_mcu_r5_0>; + memory-region = <&mcu_r5fss0_core0_dma_memory_region>, + <&mcu_r5fss0_core0_memory_region>; + status = "okay"; +}; diff --git a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi index 671d367b40d1b..99810047614e3 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am62p-verdin.dtsi @@ -162,18 +162,6 @@ no-map; }; - mcu_r5fss0_core0_dma_memory_region: memory@9b800000 { - compatible = "shared-dma-pool"; - reg = <0x00 0x9b800000 0x00 0x100000>; - no-map; - }; - - mcu_r5fss0_core0_memory_region: memory@9b900000 { - compatible = "shared-dma-pool"; - reg = <0x00 0x9b900000 0x00 0xf00000>; - no-map; - }; - wkup_r5fss0_core0_dma_memory_region: memory@9c800000 { compatible = "shared-dma-pool"; reg = <0x00 0x9c800000 0x00 0x100000>; @@ -848,46 +836,6 @@ status = "disabled"; }; -&mailbox0_cluster0 { - status = "okay"; - - mbox_r5_0: mbox-r5-0 { - ti,mbox-rx = <0 0 0>; - ti,mbox-tx = <1 0 0>; - }; -}; - -&mailbox0_cluster1 { - status = "okay"; - - mbox_mcu_r5_0: mbox-mcu-r5-0 { - ti,mbox-rx = <0 0 0>; - ti,mbox-tx = <1 0 0>; - }; -}; - -&wkup_r5fss0 { - status = "okay"; -}; - -&wkup_r5fss0_core0 { - mboxes = <&mailbox0_cluster0 &mbox_r5_0>; - memory-region = <&wkup_r5fss0_core0_dma_memory_region>, - <&wkup_r5fss0_core0_memory_region>; - status = "okay"; -}; - -&mcu_r5fss0 { - status = "okay"; -}; - -&mcu_r5fss0_core0 { - mboxes = <&mailbox0_cluster1 &mbox_mcu_r5_0>; - memory-region = <&mcu_r5fss0_core0_dma_memory_region>, - <&mcu_r5fss0_core0_memory_region>; - status = "okay"; -}; - &main0_alert { temperature = <95000>; }; @@ -1466,3 +1414,5 @@ uart-has-rtscts; status = "disabled"; }; + +#include "k3-am62p-ti-ipc-firmware.dtsi" diff --git a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts index aa363aaf6d599..56f0eb11b902c 100644 --- a/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am62p5-sk.dts @@ -49,18 +49,6 @@ #size-cells = <2>; ranges; - mcu_r5fss0_core0_dma_memory_region: memory@9b800000 { - compatible = "shared-dma-pool"; - reg = <0x00 0x9b800000 0x00 0x100000>; - no-map; - }; - - mcu_r5fss0_core0_memory_region: memory@9b900000 { - compatible = "shared-dma-pool"; - reg = <0x00 0x9b900000 0x00 0xf00000>; - no-map; - }; - wkup_r5fss0_core0_dma_memory_region: memory@9c800000 { compatible = "shared-dma-pool"; reg = <0x00 0x9c800000 0x00 0x100000>; @@ -699,46 +687,6 @@ }; }; -&mailbox0_cluster0 { - status = "okay"; - - mbox_r5_0: mbox-r5-0 { - ti,mbox-rx = <0 0 0>; - ti,mbox-tx = <1 0 0>; - }; -}; - -&mailbox0_cluster1 { - status = "okay"; - - mbox_mcu_r5_0: mbox-mcu-r5-0 { - ti,mbox-rx = <0 0 0>; - ti,mbox-tx = <1 0 0>; - }; -}; - -&wkup_r5fss0 { - status = "okay"; -}; - -&wkup_r5fss0_core0 { - mboxes = <&mailbox0_cluster0 &mbox_r5_0>; - memory-region = <&wkup_r5fss0_core0_dma_memory_region>, - <&wkup_r5fss0_core0_memory_region>; - status = "okay"; -}; - -&mcu_r5fss0 { - status = "okay"; -}; - -&mcu_r5fss0_core0 { - mboxes = <&mailbox0_cluster1 &mbox_mcu_r5_0>; - memory-region = <&mcu_r5fss0_core0_dma_memory_region>, - <&mcu_r5fss0_core0_memory_region>; - status = "okay"; -}; - &main_uart0 { pinctrl-names = "default"; pinctrl-0 = <&main_uart0_pins_default>; @@ -810,3 +758,5 @@ pinctrl-0 = <&main_epwm1_pins_default>; status = "okay"; }; + +#include "k3-am62p-ti-ipc-firmware.dtsi" -- 2.47.3