Patch "arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved" has been added to the 6.5-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved

to the 6.5-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm64-dts-qcom-sdm845-db845c-mark-cont-splash-memory.patch
and it can be found in the queue-6.5 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 210bbf58440112f56dc913dbffa46625e58ef6e2
Author: Amit Pundir <amit.pundir@xxxxxxxxxx>
Date:   Wed Jul 26 18:57:19 2023 +0530

    arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved
    
    [ Upstream commit 110e70fccce4f22b53986ae797d665ffb1950aa6 ]
    
    Adding a reserved memory region for the framebuffer memory
    (the splash memory region set up by the bootloader).
    
    It fixes a kernel panic (arm-smmu: Unhandled context fault
    at this particular memory region) reported on DB845c running
    v5.10.y.
    
    Cc: stable@xxxxxxxxxxxxxxx # v5.10+
    Reviewed-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx>
    Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
    Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230726132719.2117369-2-amit.pundir@xxxxxxxxxx
    Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
index d6b464cb61d6f..f546f6f57c1e5 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
+++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts
@@ -101,6 +101,14 @@ hdmi_con: endpoint {
 		};
 	};
 
+	reserved-memory {
+		/* Cont splash region set up by the bootloader */
+		cont_splash_mem: framebuffer@9d400000 {
+			reg = <0x0 0x9d400000 0x0 0x2400000>;
+			no-map;
+		};
+	};
+
 	lt9611_1v8: lt9611-vdd18-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "LT9611_1V8";
@@ -506,6 +514,7 @@ &i2c14 {
 };
 
 &mdss {
+	memory-region = <&cont_splash_mem>;
 	status = "okay";
 };