From 885198536dcb33e15be8259a326161e5e04a832c Mon Sep 17 00:00:00 2001
From: Devarsh Thakkar <devarsht@ti.com>
Date: Mon, 6 Feb 2023 17:04:51 +0530
Subject: [PATCH] am62a7: dts: Enable full 4GB LPDDR4
AM62A7-SK board has 4GB LPDDR4 Micron MT53E2G32D4DE-046 AUT:B part
but only 2GB was enabled early.
Enable full 4GB memory by updating the latter 2GB memory region
which gets mapped to 0x0880000000 i.e. DDR16SS0_SDRAM as referred in
Table 2-1. AM62A Common SoC Memory of AM62Ax TRM [1].
[1] : https://www.ti.com/lit/zip/spruj16
Logs: https://gist.github.com/devarsht/e85b6af89c01ddadb3a62f3e5f196af8
Signed-off-by: Devarsh Thakkar <devarsht@ti.com>
---
arch/arm/dts/k3-am62a7-r5-sk.dts | 4 +++-
arch/arm/dts/k3-am62a7-sk.dts | 5 +++--
2 files changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/arm/dts/k3-am62a7-r5-sk.dts b/arch/arm/dts/k3-am62a7-r5-sk.dts
index 7a15b44c5f..c953a82c7a 100644
--- a/arch/arm/dts/k3-am62a7-r5-sk.dts
+++ b/arch/arm/dts/k3-am62a7-r5-sk.dts
@@ -25,7 +25,9 @@
memory@80000000 {
device_type = "memory";
- reg = <0x00000000 0x80000000 0x00000000 0x80000000>; /* 2G RAM */
+ /* 4G RAM */
+ reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
+ <0x00000008 0x80000000 0x00000000 0x80000000>;
bootph-pre-ram;
};
diff --git a/arch/arm/dts/k3-am62a7-sk.dts b/arch/arm/dts/k3-am62a7-sk.dts
index 576dbce80a..b08a083d72 100644
--- a/arch/arm/dts/k3-am62a7-sk.dts
+++ b/arch/arm/dts/k3-am62a7-sk.dts
@@ -26,8 +26,9 @@
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 {
--
2.39.5