linux-kernel - [PATCH] arm64: dts: qcom: qcm2290: Add TCSR download mode address

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Message-ID: <20250730132230.247727-1-sumit.garg@kernel.org>
Date: Wed, 30 Jul 2025 18:52:30 +0530
From: Sumit Garg <sumit.garg@...nel.org>
To: linux-arm-msm@...r.kernel.org
Cc: andersson@...nel.org,
	konradybcio@...nel.org,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Sumit Garg <sumit.garg@....qualcomm.com>
Subject: [PATCH] arm64: dts: qcom: qcm2290: Add TCSR download mode address

From: Sumit Garg <sumit.garg@....qualcomm.com>

Allow configuration of download mode via qcom_scm driver via specifying
download mode register address in the TCSR space. It is especially useful
for a clean watchdog reset without entry into download mode.

The problem remained un-noticed until now since error reporting for
missing download mode configuration feature was explicitly suppressed.

Signed-off-by: Sumit Garg <sumit.garg@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/qcm2290.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/qcom/qcm2290.dtsi b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
index f49ac1c1f8a3..08eadec59882 100644
--- a/arch/arm64/boot/dts/qcom/qcm2290.dtsi
+++ b/arch/arm64/boot/dts/qcom/qcm2290.dtsi
@@ -154,6 +154,7 @@ scm: scm {
 			compatible = "qcom,scm-qcm2290", "qcom,scm";
 			clocks = <&rpmcc RPM_SMD_CE1_CLK>;
 			clock-names = "core";
+			qcom,dload-mode = <&tcsr_regs 0x13000>;
 			#reset-cells = <1>;
 			interconnects = <&system_noc MASTER_CRYPTO_CORE0 RPM_ALWAYS_TAG
 					 &bimc SLAVE_EBI1 RPM_ALWAYS_TAG>;
-- 
2.48.1