[PATCH 1/2] arm64: dts: ti: k3-j7200: Make MAIN domain system control bus a simple-bus

[PATCH 1/2] arm64: dts: ti: k3-j7200: Make MAIN domain system control bus a simple-bus

[Andrew Davis]

This node describes a memory address range containing several sub-regions
with control registers for various IP in the MAIN domain of this SoC. It
was described as a "ti,j721e-system-controller" but this is a J7200 SoC
with is not compatible with the system controller region found in J721e.

No project consuming this DT has been found that makes use of the syscon
compatible for this region, to prevent any from using this node like a
generic syscon region in the future, make this a normal simple-bus as
it should have been from the start.

Signed-off-by: Andrew Davis <afd@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
index 628ff89dd72f7..67fde5667b8d9 100644
--- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
@@ -25,9 +25,8 @@ atf-sram@0 {
 		};
 	};
 
-	scm_conf: scm-conf@100000 {
-		compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
-		reg = <0x00 0x00100000 0x00 0x1c000>;
+	scm_conf: bus@100000 {
+		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x00 0x00 0x00100000 0x1c000>;
-- 
2.39.2

[PATCH 2/2] arm64: dts: ti: k3-j721s2: Make MAIN domain system control bus a simple-bus

[Andrew Davis]

This node describes a memory address range containing several sub-regions
with control registers for various IP in the MAIN domain of this SoC. It
was described as a "ti,j721e-system-controller" but this is a J721S2 SoC
with is not compatible with the system controller region found in J721e.

No project consuming this DT has been found that makes use of the syscon
compatible for this region, to prevent any from using this node like a
generic syscon region in the future, make this a normal simple-bus as
it should have been from the start.

Signed-off-by: Andrew Davis <afd@ti.com>
---
 arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
index 80c51b11ac9fa..774958aca880e 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi
@@ -37,9 +37,8 @@ l3cache-sram@200000 {
 		};
 	};
 
-	scm_conf: syscon@104000 {
-		compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
-		reg = <0x00 0x00104000 0x00 0x18000>;
+	scm_conf: bus@104000 {
+		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x00 0x00 0x00104000 0x18000>;
-- 
2.39.2

Re: [PATCH 1/2] arm64: dts: ti: k3-j7200: Make MAIN domain system control bus a simple-bus

[Krzysztof Kozlowski]

On 03/03/2026 21:52, Andrew Davis wrote:
> This node describes a memory address range containing several sub-regions
> with control registers for various IP in the MAIN domain of this SoC. It
> was described as a "ti,j721e-system-controller" but this is a J7200 SoC
> with is not compatible with the system controller region found in J721e.
> 
> No project consuming this DT has been found that makes use of the syscon
> compatible for this region, to prevent any from using this node like a
> generic syscon region in the future, make this a normal simple-bus as
> it should have been from the start.

So that's v2. You should mark the patch correctly and provide the
changelog, even if you do not keep original authorship.

Best regards,
Krzysztof

Re: [PATCH 1/2] arm64: dts: ti: k3-j7200: Make MAIN domain system control bus a simple-bus

[Vignesh Raghavendra]

Hi Andrew Davis,

On Tue, 03 Mar 2026 14:52:23 -0600, Andrew Davis wrote:
> arm64: dts: ti: k3-j7200: Make MAIN domain system control bus a simple-bus

I have applied the following to branch ti-k3-dts-next on [1].
Thank you!

[1/2] arm64: dts: ti: k3-j7200: Make MAIN domain system control bus a simple-bus
      commit: 830e0b0e15ee3d676539346b019f97f9bfae16b5
[2/2] arm64: dts: ti: k3-j721s2: Make MAIN domain system control bus a simple-bus
      commit: af704cad18c0e973c758f41c9337411168de3681

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent up the chain during
the next merge window (or sooner if it is a relevant bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
--
Vignesh