arm64: dts: ti: k3-j721e-sk: Fix reversed C6x carveout locations

The DMA carveout for the C6x core 0 is at 0xa6000000 and core 1 is at 0xa7000000. These are reversed in DT. While both C6x can access either region, so this is not normally a problem, but if we start restricting the memory each core can access (such as with firewalls) the cores accessing the regions for the wrong core will not work. Fix this here.

---
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index 89fbfb21e5d3b..e709edeb95cf7 100644
@@ -120,7 +120,7 @@ main_r5fss1_core1_memory_region: r5f-memory@a5100000 {
 			no-map;
 		};
 
-		c66_1_dma_memory_region: c66-dma-memory@a6000000 {
+		c66_0_dma_memory_region: c66-dma-memory@a6000000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0xa6000000 0x00 0x100000>;
 			no-map;

@@ -132,7 +132,7 @@ c66_0_memory_region: c66-memory@a6100000 {
 			no-map;
 		};
 
-		c66_0_dma_memory_region: c66-dma-memory@a7000000 {
+		c66_1_dma_memory_region: c66-dma-memory@a7000000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0xa7000000 0x00 0x100000>;
 			no-map;

2.39.2

The DMA carveout for the C6x core 0 is at 0xa6000000 and core 1 is at 0xa7000000. These are reversed in DT. While both C6x can access either region, so this is not normally a problem, but if we start restricting the memory each core can access (such as with firewalls) the cores accessing the regions for the wrong core will not work. Fix this here.

---
 arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index a2925555fe818..fb899c99753ec 100644
@@ -123,7 +123,7 @@ main_r5fss1_core1_memory_region: r5f-memory@a5100000 {
 			no-map;
 		};
 
-		c66_1_dma_memory_region: c66-dma-memory@a6000000 {
+		c66_0_dma_memory_region: c66-dma-memory@a6000000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0xa6000000 0x00 0x100000>;
 			no-map;

@@ -135,7 +135,7 @@ c66_0_memory_region: c66-memory@a6100000 {
 			no-map;
 		};
 
-		c66_0_dma_memory_region: c66-dma-memory@a7000000 {
+		c66_1_dma_memory_region: c66-dma-memory@a7000000 {
 			compatible = "shared-dma-pool";
 			reg = <0x00 0xa7000000 0x00 0x100000>;
 			no-map;

2.39.2

Hi Andrew Davis,

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

[1/2] arm64: dts: ti: k3-j721e-sk: Fix reversed C6x carveout locations

      commit: 9f3814a7c06b7c7296cf8c1622078ad71820454b
[2/2] arm64: dts: ti: k3-j721e-beagleboneai64: Fix reversed C6x carveout locations
      commit: 1a314099b7559690fe23cdf3300dfff6e830ecb1

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

Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D