linux-kernel - [PATCH v3] arm64: dts: qcom: disable GPU on x1e80100 by default

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Message-Id: <20240715-x1e8-zap-name-v3-1-e7a5258c3c2e@linaro.org>
Date: Mon, 15 Jul 2024 22:17:44 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Konrad Dybcio <konrad.dybcio@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Akhil P Oommen <quic_akhilpo@...cinc.com>
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH v3] arm64: dts: qcom: disable GPU on x1e80100 by default

The GPU on X1E80100 requires ZAP 'shader' file to be useful. Since the
file is signed by the OEM keys and might be not available by default,
disable the GPU node and drop the firmware name from the x1e80100.dtsi
file. Devices not being fused to use OEM keys can specify generic
location at `qcom/x1e80100/gen70500_zap.mbn` while enabling the GPU.

The CRD and QCP were lucky enough to work with the default settings, so
reenable the GPU on those platforms and provide correct firmware-name
(including the SoC subdir).

Fixes: 721e38301b79 ("arm64: dts: qcom: x1e80100: Add gpu support")
Cc: Akhil P Oommen <quic_akhilpo@...cinc.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
Changes in v3:
- Fix the status property name (Akhil)
- Also keep the GPU enabled on QCP (Akhil)
- Link to v2: https://lore.kernel.org/r/20240715-x1e8-zap-name-v2-1-a82488e7f7c1@linaro.org

Changes in v2:
- Keep GPU enabled for X1E80100-CRD (Johan)
- Link to v1: https://lore.kernel.org/r/20240715-x1e8-zap-name-v1-1-b66df09d0b65@linaro.org
---
 arch/arm64/boot/dts/qcom/x1e80100-crd.dts | 8 ++++++++
 arch/arm64/boot/dts/qcom/x1e80100-qcp.dts | 8 ++++++++
 arch/arm64/boot/dts/qcom/x1e80100.dtsi    | 3 ++-
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/x1e80100-crd.dts b/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
index 6152bcd0bc1f..81d7ec82a845 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-crd.dts
@@ -637,6 +637,14 @@ vreg_l3j_0p8: ldo3 {
 	};
 };
 
+&gpu {
+	status = "okay";
+
+	zap-shader {
+		firmware-name = "qcom/x1e80100/gen70500_zap.mbn";
+	};
+};
+
 &i2c0 {
 	clock-frequency = <400000>;
 
diff --git a/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts b/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
index 72a4f4138616..b3521ec4879c 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
+++ b/arch/arm64/boot/dts/qcom/x1e80100-qcp.dts
@@ -606,6 +606,14 @@ vreg_l3j_0p8: ldo3 {
 	};
 };
 
+&gpu {
+	status = "okay";
+
+	zap-shader {
+		firmware-name = "qcom/x1e80100/gen70500_zap.mbn";
+	};
+};
+
 &lpass_tlmm {
 	spkr_01_sd_n_active: spkr-01-sd-n-active-state {
 		pins = "gpio12";
diff --git a/arch/arm64/boot/dts/qcom/x1e80100.dtsi b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
index 7bca5fcd7d52..8df90d01eba8 100644
--- a/arch/arm64/boot/dts/qcom/x1e80100.dtsi
+++ b/arch/arm64/boot/dts/qcom/x1e80100.dtsi
@@ -3155,9 +3155,10 @@ gpu: gpu@...0000 {
 			interconnects = <&gem_noc MASTER_GFX3D 0 &mc_virt SLAVE_EBI1 0>;
 			interconnect-names = "gfx-mem";
 
+			status = "disabled";
+
 			zap-shader {
 				memory-region = <&gpu_microcode_mem>;
-				firmware-name = "qcom/gen70500_zap.mbn";
 			};
 
 			gpu_opp_table: opp-table {

---
base-commit: 3fe121b622825ff8cc995a1e6b026181c48188db
change-id: 20240715-x1e8-zap-name-7b3c79234401

Best regards,
-- 
Dmitry Baryshkov <dmitry.baryshkov@...aro.org>