linux-kernel - [PATCH V4 3/5] arm64: dts: qcom: ipq9574: Enable the download mode support

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Date:   Tue, 14 Feb 2023 10:44:12 +0530
From:   Poovendhan Selvaraj <quic_poovendh@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <lee@...nel.org>,
        <mturquette@...libre.com>, <sboyd@...nel.org>,
        <jassisinghbrar@...il.com>, <catalin.marinas@....com>,
        <will@...nel.org>, <shawnguo@...nel.org>, <arnd@...db.de>,
        <marcel.ziswiler@...adex.com>, <robimarko@...il.com>,
        <dmitry.baryshkov@...aro.org>, <nfraprado@...labora.com>,
        <broonie@...nel.org>, <quic_gurus@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <quic_srichara@...cinc.com>, <quic_gokulsri@...cinc.com>,
        <quic_sjaganat@...cinc.com>, <quic_kathirav@...cinc.com>,
        <quic_arajkuma@...cinc.com>, <quic_anusha@...cinc.com>,
        <quic_devipriy@...cinc.com>
Subject: [PATCH V4 3/5] arm64: dts: qcom: ipq9574: Enable the download mode support

Enable the support for download mode to collect the crashdumps if
system crashes, to debug crashes extensively.

Signed-off-by: Poovendhan Selvaraj <quic_poovendh@...cinc.com>
---
 Changes in V4:
	- Dropped smem related nodes from this patch
        - Mapped the entire TCSR_REGS region and updated the offset in
	  qcom,dload-mode property
	- updated the commit message

 Changes in V3:
	- No changes

 arch/arm64/boot/dts/qcom/ipq9574.dtsi | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index 2b86ba17bb32..898d7ce3f28d 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -81,6 +81,13 @@
 		reg = <0x0 0x40000000 0x0 0x0>;
 	};
 
+	firmware {
+		scm {
+			compatible = "qcom,scm-ipq9574", "qcom,scm";
+			qcom,dload-mode = <&tcsr 0x6100>;
+		};
+	};
+
 	pmu {
 		compatible = "arm,cortex-a73-pmu";
 		interrupts = <GIC_PPI 7 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
@@ -150,6 +157,11 @@
 			#power-domain-cells = <1>;
 		};
 
+		tcsr: syscon@...7000 {
+			compatible = "qcom,tcsr-ipq9574", "syscon";
+			reg = <0x01937000 0x21000>;
+		};
+
 		sdhc_1: mmc@...4000 {
 			compatible = "qcom,ipq9574-sdhci", "qcom,sdhci-msm-v5";
 			reg = <0x07804000 0x1000>, <0x07805000 0x1000>;
-- 
2.17.1