From 2742d963e1dd7f4a3d0505044323b091daffcddc Mon Sep 17 00:00:00 2001 From: Beleswar Padhi Date: Mon, 8 Sep 2025 19:58:20 +0530 Subject: [PATCH] arm64: dts: ti: k3-j784s4-ti-ipc-firmware: Refactor IPC cfg into new dtsi The TI K3 J784S4 SoCs have multiple programmable remote processors like R5F, C7x etc. The TI SDKs for J784S4 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. This patch only refactors the C71_3 remote processor related nodes into the new dtsi. All other nodes have been refactored in the previous commit as part of k3-j784s4-j742s2-ti-ipc-firmware-common.dtsi. Signed-off-by: Beleswar Padhi Link: https://patch.msgid.link/20250908142826.1828676-29-b-padhi@ti.com Signed-off-by: Nishanth Menon --- arch/arm64/boot/dts/ti/k3-am69-sk.dts | 27 +------------- arch/arm64/boot/dts/ti/k3-j784s4-evm.dts | 26 +------------- .../dts/ti/k3-j784s4-ti-ipc-firmware.dtsi | 35 +++++++++++++++++++ 3 files changed, 37 insertions(+), 51 deletions(-) create mode 100644 arch/arm64/boot/dts/ti/k3-j784s4-ti-ipc-firmware.dtsi diff --git a/arch/arm64/boot/dts/ti/k3-am69-sk.dts b/arch/arm64/boot/dts/ti/k3-am69-sk.dts index 3be74d828d84c..5896e57b5b9ed 100644 --- a/arch/arm64/boot/dts/ti/k3-am69-sk.dts +++ b/arch/arm64/boot/dts/ti/k3-am69-sk.dts @@ -60,18 +60,6 @@ reg = <0x00 0xa0100000 0x00 0xf00000>; no-map; }; - - c71_3_dma_memory_region: memory@ab000000 { - compatible = "shared-dma-pool"; - reg = <0x00 0xab000000 0x00 0x100000>; - no-map; - }; - - c71_3_memory_region: memory@ab100000 { - compatible = "shared-dma-pool"; - reg = <0x00 0xab100000 0x00 0xf00000>; - no-map; - }; }; vusb_main: regulator-vusb-main5v0 { @@ -520,13 +508,6 @@ bootph-all; }; -&mailbox0_cluster5 { - mbox_c71_3: mbox-c71-3 { - ti,mbox-rx = <2 0 0>; - ti,mbox-tx = <3 0 0>; - }; -}; - &wkup_uart0 { /* Firmware usage */ status = "reserved"; @@ -795,13 +776,6 @@ bootph-all; }; -&c71_3 { - status = "okay"; - mboxes = <&mailbox0_cluster5 &mbox_c71_3>; - memory-region = <&c71_3_dma_memory_region>, - <&c71_3_memory_region>; -}; - &wkup_gpio_intr { status = "okay"; }; @@ -1086,3 +1060,4 @@ }; #include "k3-j784s4-j742s2-ti-ipc-firmware-common.dtsi" +#include "k3-j784s4-ti-ipc-firmware.dtsi" diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts index 2ed1ec6d53c88..6c7458c76f535 100644 --- a/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts +++ b/arch/arm64/boot/dts/ti/k3-j784s4-evm.dts @@ -27,31 +27,7 @@ reserved_memory: reserved-memory { #address-cells = <2>; #size-cells = <2>; - - c71_3_dma_memory_region: memory@ab000000 { - compatible = "shared-dma-pool"; - reg = <0x00 0xab000000 0x00 0x100000>; - no-map; - }; - - c71_3_memory_region: memory@ab100000 { - compatible = "shared-dma-pool"; - reg = <0x00 0xab100000 0x00 0xf00000>; - no-map; - }; - }; -}; - -&mailbox0_cluster5 { - mbox_c71_3: mbox-c71-3 { - ti,mbox-rx = <2 0 0>; - ti,mbox-tx = <3 0 0>; }; }; -&c71_3 { - mboxes = <&mailbox0_cluster5 &mbox_c71_3>; - memory-region = <&c71_3_dma_memory_region>, - <&c71_3_memory_region>; - status = "okay"; -}; +#include "k3-j784s4-ti-ipc-firmware.dtsi" diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-ti-ipc-firmware.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-ti-ipc-firmware.dtsi new file mode 100644 index 0000000000000..81b508b9b05ee --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j784s4-ti-ipc-firmware.dtsi @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/** + * Device Tree Source for enabling IPC using TI SDK firmware on J784S4 SoCs + * + * Copyright (C) 2022-2025 Texas Instruments Incorporated - https://www.ti.com/ + */ + +&reserved_memory { + c71_3_dma_memory_region: memory@ab000000 { + compatible = "shared-dma-pool"; + reg = <0x00 0xab000000 0x00 0x100000>; + no-map; + }; + + c71_3_memory_region: memory@ab100000 { + compatible = "shared-dma-pool"; + reg = <0x00 0xab100000 0x00 0xf00000>; + no-map; + }; +}; + +&mailbox0_cluster5 { + + mbox_c71_3: mbox-c71-3 { + ti,mbox-rx = <2 0 0>; + ti,mbox-tx = <3 0 0>; + }; +}; + +&c71_3 { + mboxes = <&mailbox0_cluster5 &mbox_c71_3>; + memory-region = <&c71_3_dma_memory_region>, + <&c71_3_memory_region>; + status = "okay"; +}; -- 2.47.3