[PATCH] arm64: dts: qcom: sm8150: describe download mode register
From: Robin Snyders via B4 Relay
Date: Tue Aug 11 2026 - 16:32:29 EST
From: Robin Snyders <robin@xxxxxxxxxxx>
The SM8150 SCM node does not describe the TCSR download-mode register.
Without it, the SCM driver falls back to a firmware call and the
mode cookie may remain set across a warm reset, causing the next boot to
enter the Qualcomm crashdump transport.
Describe the TCSR window and point qcom,dload-mode at offset 0x13000,
matching the layout used by SM8250 and other related Qualcomm platforms.
On a OnePlus 7T Pro this changes software reboot from a reproducible
05c6:900e transition to six consecutive successful boots.
Signed-off-by: Robin Snyders <robin@xxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sm8150.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index 94a3b02cb289..29cdef6b3ee2 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -610,6 +610,7 @@ cpu7_opp20: opp-2841600000 {
firmware {
scm: scm {
compatible = "qcom,scm-sm8150", "qcom,scm";
+ qcom,dload-mode = <&tcsr 0x13000>;
#reset-cells = <1>;
};
};
@@ -2176,6 +2177,11 @@ tcsr_mutex: hwlock@1f40000 {
#hwlock-cells = <1>;
};
+ tcsr: syscon@1fc0000 {
+ compatible = "qcom,sm8150-tcsr", "syscon";
+ reg = <0x0 0x01fc0000 0x0 0x30000>;
+ };
+
tcsr_regs_1: syscon@1f60000 {
compatible = "qcom,sm8150-tcsr", "syscon";
reg = <0x0 0x01f60000 0x0 0x20000>;
---
base-commit: 3d08ff75a47a3e7e2ab45a3bcab6723b4d906422
change-id: 20260811-submit-sm8150-dload-38802bee77c9
Best regards,
--
Robin Snyders <robin@xxxxxxxxxxx>