linux-kernel - [PATCH 08/10] arm64: dts: qcom: sm8350: Explicitly describe the IPA IMEM slice

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Message-Id: <20250523-topic-ipa_mem_dts-v1-8-f7aa94fac1ab@oss.qualcomm.com>
Date: Fri, 23 May 2025 01:18:23 +0200
From: Konrad Dybcio <konradybcio@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, cros-qcom-dts-watchers@...omium.org, 
 Sai Prakash Ranjan <quic_saipraka@...cinc.com>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH 08/10] arm64: dts: qcom: sm8350: Explicitly describe the
 IPA IMEM slice

From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>

As part of stepping away from crazy hardcoding in the driver, move
define the slice explicitly and pass it to the IPA node.

Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sm8350.dtsi | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi b/arch/arm64/boot/dts/qcom/sm8350.dtsi
index 971c828a7555885aa2f05647634eb7132333fb47..bbe225f339753a03a268b1089b4c35a1a1107cb2 100644
--- a/arch/arm64/boot/dts/qcom/sm8350.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi
@@ -1862,6 +1862,8 @@ ipa: ipa@...0000 {
 			qcom,smem-state-names = "ipa-clock-enabled-valid",
 						"ipa-clock-enabled";
 
+			sram = <&ipa_modem_tables>;
+
 			status = "disabled";
 		};
 
@@ -3432,6 +3434,20 @@ qup_i2c19_default: qup-i2c19-default-state {
 			};
 		};
 
+		sram@...80000 {
+			compatible = "qcom,sm8350-imem", "syscon", "simple-mfd";
+			reg = <0 0x14680000 0 0x40000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			ranges = <0 0 0x14680000 0x40000>;
+
+			ipa_modem_tables: modem-tables@...00 {
+				reg = <0x3d000 0x2000>;
+			};
+		};
+
 		apps_smmu: iommu@...00000 {
 			compatible = "qcom,sm8350-smmu-500", "arm,mmu-500";
 			reg = <0 0x15000000 0 0x100000>;

-- 
2.49.0