[PATCH] arm64: dts: ti: k3-am62-phycore-som: Add 128MiB of global CMA

[PATCH] arm64: dts: ti: k3-am62-phycore-som: Add 128MiB of global CMA

[Wadim Egorov]

Reserve 128MiB of global CMA which is also marked as re-usable
so that OS can also use the same if peripheral drivers are not using
the same.

Based on the use case described in commit c43dd2fe5316 ("arm64: dts: ti:
k3-am62x-sk-common: Reserve 128MiB of global CMA").

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
---
 arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi
index e15da771bc07..3baa653257bb 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-phycore-som.dtsi
@@ -37,6 +37,13 @@ reserved_memory: reserved-memory {
 		#size-cells = <2>;
 		ranges;
 
+		linux,cma {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0x00 0x8000000>;
+			linux,cma-default;
+		};
+
 		ramoops@9c700000 {
 			compatible = "ramoops";
 			reg = <0x00 0x9c700000 0x00 0x00100000>;
-- 
2.48.1

Re: [PATCH] arm64: dts: ti: k3-am62-phycore-som: Add 128MiB of global CMA

[Vignesh Raghavendra]

Hi Wadim Egorov,

On Fri, 13 Feb 2026 06:38:06 +0100, Wadim Egorov wrote:
> Reserve 128MiB of global CMA which is also marked as re-usable
> so that OS can also use the same if peripheral drivers are not using
> the same.
> 
> Based on the use case described in commit c43dd2fe5316 ("arm64: dts: ti:
> k3-am62x-sk-common: Reserve 128MiB of global CMA").
> 
> [...]

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

[1/1] arm64: dts: ti: k3-am62-phycore-som: Add 128MiB of global CMA
      commit: 2af52683ecd85ae33dcd52eaddef6d592da5492a

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