Received-SPF: pass (google.com: domain of linux-kernel+bounces-190640-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: Bartosz Golaszewski <brgl@bgdev.pl>
Date: Mon, 27 May 2024 14:55:05 +0200
Subject: [PATCH v10 15/15] arm64: dts: qcom: sa8775p: add a dedicated
 memory carveout for TZ
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20240527-shm-bridge-v10-15-ce7afaa58d3a@linaro.org>
References: <20240527-shm-bridge-v10-0-ce7afaa58d3a@linaro.org>
In-Reply-To: <20240527-shm-bridge-v10-0-ce7afaa58d3a@linaro.org>
To: Bjorn Andersson <andersson@kernel.org>, 
 Konrad Dybcio <konrad.dybcio@linaro.org>, Rob Herring <robh@kernel.org>, 
 Krzysztof Kozlowski <krzk+dt@kernel.org>, 
 Conor Dooley <conor+dt@kernel.org>, Robert Marko <robimarko@gmail.com>, 
 Das Srinagesh <quic_gurus@quicinc.com>, 
 Bartosz Golaszewski <bartosz.golaszewski@linaro.org>, 
 Maximilian Luz <luzmaximilian@gmail.com>, 
 Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, 
 Srini Kandagatla <srinivas.kandagatla@linaro.org>, 
 Arnd Bergmann <arnd@arndb.de>, Elliot Berman <quic_eberman@quicinc.com>, 
 Alex Elder <elder@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, 
 linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
 kernel@quicinc.com

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Add a 20MB reserved memory region for use by SCM calls.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 arch/arm64/boot/dts/qcom/sa8775p.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
index 31de73594839..c183527452d7 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
@@ -208,6 +208,7 @@ core3 {
 	firmware {
 		scm {
 			compatible = "qcom,scm-sa8775p", "qcom,scm";
+			memory-region = <&tz_ffi_mem>;
 		};
 	};
 
@@ -418,6 +419,12 @@ cdt_data_backup_mem: cdt-data-backup@91ba0000 {
 			no-map;
 		};
 
+		tz_ffi_mem: tz-ffi@91c00000 {
+			compatible = "shared-dma-pool";
+			reg = <0x0 0x91c00000 0x0 0x1400000>;
+			no-map;
+		};
+
 		lpass_machine_learning_mem: lpass-machine-learning@93b00000 {
 			reg = <0x0 0x93b00000 0x0 0xf00000>;
 			no-map;

-- 
2.43.0