[PATCH v3 01/33] arm64: dts: ti: k3-j7200: Enable R5F remote processors at board level

Beleswar Padhi
2025-09-05T05:34:24Z

Remote Processors defined in top-level J7200 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>
Acked-by: Andrew Davis <afd@ti.com>
---
v3: Changelog:
1. Carried A/B tag.
2. Updated $subject to include R5F remote processors.

Link to v2:
https://lore.kernel.org/all/20250823160901.2177841-2-b-padhi@ti.com/

v2: Changelog:
1. None

Link to v1:
https://lore.kernel.org/all/20250814223839.3256046-2-b-padhi@ti.com/

arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 3 +++
arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi | 3 +++
arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi | 9 +++++++++
3 files changed, 15 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
index 5ce5f0a3d6f5..628ff89dd72f 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
@@ -1516,6 +1516,7 @@ main_r5fss0: r5fss@5c00000 {
ranges = <0x5c00000 0x00 0x5c00000 0x20000>,
<0x5d00000 0x00 0x5d00000 0x20000>;
power-domains = <&k3_pds 243 TI_SCI_PD_EXCLUSIVE>;
+ status = "disabled";

main_r5fss0_core0: r5f@5c00000 {
compatible = "ti,j7200-r5f";
@@ -1530,6 +1531,7 @@ main_r5fss0_core0: r5f@5c00000 {
ti,atcm-enable = <1>;
ti,btcm-enable = <1>;
ti,loczrama = <1>;
+ status = "disabled";
};

main_r5fss0_core1: r5f@5d00000 {
@@ -1545,6 +1547,7 @@ main_r5fss0_core1: r5f@5d00000 {
ti,atcm-enable = <1>;
ti,btcm-enable = <1>;
ti,loczrama = <1>;
+ status = "disabled";
};
};

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
index 56ab144fea07..692c4745040e 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-mcu-wakeup.dtsi
@@ -612,6 +612,7 @@ mcu_r5fss0: r5fss@41000000 {
ranges = <0x41000000 0x00 0x41000000 0x20000>,
<0x41400000 0x00 0x41400000 0x20000>;
power-domains = <&k3_pds 249 TI_SCI_PD_EXCLUSIVE>;
+ status = "disabled";

mcu_r5fss0_core0: r5f@41000000 {
compatible = "ti,j7200-r5f";
@@ -626,6 +627,7 @@ mcu_r5fss0_core0: r5f@41000000 {
ti,atcm-enable = <1>;
ti,btcm-enable = <1>;
ti,loczrama = <1>;
+ status = "disabled";
};

mcu_r5fss0_core1: r5f@41400000 {
@@ -641,6 +643,7 @@ mcu_r5fss0_core1: r5f@41400000 {
ti,atcm-enable = <1>;
ti,btcm-enable = <1>;
ti,loczrama = <1>;
+ status = "disabled";
};
};

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
index 291ab9bb414d..90befcdc8d08 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-som-p0.dtsi
@@ -254,20 +254,27 @@ mbox_main_r5fss0_core1: mbox-main-r5fss0-core1 {
};
};

+&mcu_r5fss0 {
+ status = "okay";
+};
+
&mcu_r5fss0_core0 {
mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core0>;
memory-region = <&mcu_r5fss0_core0_dma_memory_region>,
<&mcu_r5fss0_core0_memory_region>;
+ status = "okay";
};

&mcu_r5fss0_core1 {
mboxes = <&mailbox0_cluster0 &mbox_mcu_r5fss0_core1>;
memory-region = <&mcu_r5fss0_core1_dma_memory_region>,
<&mcu_r5fss0_core1_memory_region>;
+ status = "okay";
};

&main_r5fss0 {
ti,cluster-mode = <0>;
+ status = "okay";
};

/* Timers are used by Remoteproc firmware */
@@ -287,12 +294,14 @@ &main_r5fss0_core0 {
mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core0>;
memory-region = <&main_r5fss0_core0_dma_memory_region>,
<&main_r5fss0_core0_memory_region>;
+ status = "okay";
};

&main_r5fss0_core1 {
mboxes = <&mailbox0_cluster1 &mbox_main_r5fss0_core1>;
memory-region = <&main_r5fss0_core1_dma_memory_region>,
<&main_r5fss0_core1_memory_region>;
+ status = "okay";
};

&main_i2c0 {
--
2.34.1