[PATCH] arm64: zynqmp: Fix the memory node for k26/k24 kria som boards

Michal Simek michal.simek at amd.com
Mon Jun 5 13:59:51 CEST 2023


From: Sharath Kumar Dasari <sharath.kumar.dasari at xilinx.com>

PMUFW requires top 1MB of the lower DDR memory reserved for its operation,
this is missing in k26/k24 sm static dts files because of which U-Boot
throws warning messages "efi_free_pool: illegal free" as EFI puts
some code to that space which shouldn't happen.

Signed-off-by: Sharath Kumar Dasari <sharath.kumar.dasari at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at amd.com>
---

 arch/arm/dts/zynqmp-sm-k26-revA.dts | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/arch/arm/dts/zynqmp-sm-k26-revA.dts b/arch/arm/dts/zynqmp-sm-k26-revA.dts
index f6ed047f3d9c..eac0b55de368 100644
--- a/arch/arm/dts/zynqmp-sm-k26-revA.dts
+++ b/arch/arm/dts/zynqmp-sm-k26-revA.dts
@@ -50,6 +50,17 @@
 		reg = <0x0 0x0 0x0 0x80000000>, <0x8 0x00000000 0x0 0x80000000>;
 	};
 
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		pmu_region: pmu at 7ff00000 {
+			reg = <0x0 0x7ff00000 0x0 0x100000>;
+			no-map;
+		};
+	};
+
 	gpio-keys {
 		compatible = "gpio-keys";
 		autorepeat;
-- 
2.36.1



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