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From: Sasha Levin <sashal@kernel.org>
To: Thierry Reding <thierry.reding@kernel.org>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Lyude Paul <lyude@redhat.com>, Danilo Krummrich <dakr@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Alexandre Courbot <acourbot@nvidia.com>,
	Mikko Perttunen <mperttunen@nvidia.com>,
	Aaron Kling <webgeek1234@gmail.com>,
	Diogo Ivo <diogo.ivo@bootlin.com>,
	Svyatoslav Ryhel <clamor95@gmail.com>,
	Dmitry Osipenko <dmitry.osipenko@collabora.com>,
	David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
	devicetree@vger.kernel.org, linux-tegra@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v2 3/6] arm64: tegra: Add the fuse clock to the Tegra132 GPU
Date: Fri, 16 Oct 2026 12:06:56 -0400	[thread overview]
Message-ID: <20261016160700.3831336-4-sashal@kernel.org> (raw)
In-Reply-To: <20261016160700.3831336-1-sashal@kernel.org>

The GPU needs the fuse clock running while it is powered: the GM20B
on Tegra210 often fails to initialize without it, and the GK20A on
Tegra132 is expected to have the same requirement. Describe the fuse
clock so that the GPU driver can keep it enabled.

Assisted-by: LLM
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/nvidia/tegra132.dtsi | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra132.dtsi b/arch/arm64/boot/dts/nvidia/tegra132.dtsi
index 26cd11a8a4a12..30f0d87aa70c2 100644
--- a/arch/arm64/boot/dts/nvidia/tegra132.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra132.dtsi
@@ -195,8 +195,9 @@ gpu@57000000 {
 			     <GIC_SPI 158 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-names = "stall", "nonstall";
 		clocks = <&tegra_car TEGRA124_CLK_GPU>,
-			 <&tegra_car TEGRA124_CLK_PLL_P_OUT5>;
-		clock-names = "gpu", "pwr";
+			 <&tegra_car TEGRA124_CLK_PLL_P_OUT5>,
+			 <&tegra_car TEGRA124_CLK_FUSE>;
+		clock-names = "gpu", "pwr", "fuse";
 		resets = <&tegra_car 184>;
 		reset-names = "gpu";
 		status = "disabled";
-- 
2.53.0


  parent reply	other threads:[~2026-10-16 16:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-16 16:06 [PATCH v2 0/6] Keep the fuse clock enabled while the Tegra GPU is powered Sasha Levin
2026-10-16 16:06 ` [PATCH v2 1/6] dt-bindings: gpu: nvidia,gk20a: Require the fuse clock Sasha Levin
2026-10-16 16:13   ` sashiko-bot
2026-10-16 16:06 ` [PATCH v2 2/6] ARM: tegra: Add the fuse clock to the Tegra124 GPU Sasha Levin
2026-10-16 16:06 ` Sasha Levin [this message]
2026-10-16 16:06 ` [PATCH v2 4/6] arm64: tegra: Add the fuse clock to the Tegra186 GPU Sasha Levin
2026-10-16 16:06 ` [PATCH v2 5/6] arm64: tegra: Add the fuse clock to the Tegra210 GPU Sasha Levin
2026-10-16 16:06 ` [PATCH v2 6/6] drm/nouveau/tegra: Keep the fuse clock enabled while the GPU is powered Sasha Levin

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