[PATCH RFC 3/4] arm64: dts: qcom: sdm845-google: Add modemsmem

From: David Heidelberg via B4 Relay

Date: Sat Sep 05 2026 - 20:43:54 EST


From: David Heidelberg <david@xxxxxxx>

The Pixel 3 / 3 XL modem needs the modemsmem client. Add it in the device
tree so the modem can properly boot.

Based on work of Casey Tunturi.

Signed-off-by: David Heidelberg <david@xxxxxxx>
---
arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi b/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi
index 9e952f9862f24..7e8f1a34a79f8 100644
--- a/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm845-google-common.dtsi
@@ -45,16 +45,21 @@ chosen {
framebuffer0: framebuffer-0 {
compatible = "simple-framebuffer";
memory-region = <&cont_splash_mem>;

format = "a8r8g8b8";
};
};

+ modemsmem {
+ compatible = "google,modemsmem";
+ qcom,smem-id = <134>;
+ };
+
reserved-memory {
cont_splash_mem: splash@9d400000 {
reg = <0 0x9d400000 0 0x02400000>;
no-map;
};

mpss_region: memory@8e000000 {
reg = <0 0x8e000000 0 0x9800000>;

--
2.55.0