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

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Message-Id: <20240715-x1e8-zap-name-v1-1-b66df09d0b65@linaro.org>
Date: Mon, 15 Jul 2024 17:23:58 +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] 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.

Fixes: 721e38301b79 ("arm64: dts: qcom: x1e80100: Add gpu support")
Cc: Akhil P Oommen <quic_akhilpo@...cinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
---
 arch/arm64/boot/dts/qcom/x1e80100.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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>