[PATCH v3] arm64: dts: ti: k3-am62a7-sk: Fix DDR size to full 4GB

[PATCH v3] arm64: dts: ti: k3-am62a7-sk: Fix DDR size to full 4GB

[Devarsh Thakkar]

All revisions of AM62A7-SK board have 4GB LPDDR4 Micron
MT53E2G32D4DE-046 AUT:B memory. Commit 38c4a08c820c ("arm64: dts: ti:
Add support for AM62A7-SK") enabled just 2GB due to a schematics error
in early revision of the board. Fix it by enabling full 4GB available on
the platform.

Design docs: Link: https://www.ti.com/lit/zip/sprr459

Fixes: 38c4a08c820c ("arm64: dts: ti: Add support for AM62A7-SK")

Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Bryan Brattlof <bb@ti.com>
---
Logs:
https://gist.github.com/devarsht/e85b6af89c01ddadb3a62f3e5f196af8

Changelog:
V2: Update commit message with mention of schematics error
V3: Add Reviewed-By and update design docs link
---
 arch/arm64/boot/dts/ti/k3-am62a7-sk.dts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
index 5c9012141ee2..f6a67f072dca 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-am62a7-sk.dts
@@ -27,8 +27,9 @@ chosen {
 
 	memory@80000000 {
 		device_type = "memory";
-		/* 2G RAM */
-		reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
+		/* 4G RAM */
+		reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
+		      <0x00000008 0x80000000 0x00000000 0x80000000>;
 	};
 
 	reserved-memory {
-- 
2.34.1

Re: [PATCH v3] arm64: dts: ti: k3-am62a7-sk: Fix DDR size to full 4GB

[Nishanth Menon]

Hi Devarsh Thakkar,

On Tue, 14 Mar 2023 15:16:45 +0530, Devarsh Thakkar wrote:
> All revisions of AM62A7-SK board have 4GB LPDDR4 Micron
> MT53E2G32D4DE-046 AUT:B memory. Commit 38c4a08c820c ("arm64: dts: ti:
> Add support for AM62A7-SK") enabled just 2GB due to a schematics error
> in early revision of the board. Fix it by enabling full 4GB available on
> the platform.
> 
> Design docs: Link: https://www.ti.com/lit/zip/sprr459
> 
> [...]

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

[1/1] arm64: dts: ti: k3-am62a7-sk: Fix DDR size to full 4GB
      commit: a1bc0d6084dba8a31831c65318a8a8e46f00906f

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] git://git.kernel.org/pub/scm/linux/kernel/git/ti/linux.git
-- 
Nishanth Menon <nm@ti.com>