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From: Mikko Perttunen <mperttunen@nvidia.com>
To: Thierry Reding <thierry.reding@kernel.org>,
	 Jonathan Hunter <jonathanh@nvidia.com>,
	Rob Herring <robh@kernel.org>,
	 Krzysztof Kozlowski <krzk+dt@kernel.org>,
	 Conor Dooley <conor+dt@kernel.org>,
	Aaron Kling <webgeek1234@gmail.com>
Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org,
	 devicetree@vger.kernel.org,
	Mikko Perttunen <mperttunen@nvidia.com>,
	 stable@vger.kernel.org
Subject: [PATCH 0/2] Fix NVDEC boot on Tegra210
Date: Thu, 15 Oct 2026 18:58:01 +0900	[thread overview]
Message-ID: <20261015-b4-t210-pd_nvdec-nesting-v1-0-39a36b622eac@nvidia.com> (raw)

On Tegra210, parts of the NVDEC hardware unit are in the NVJPG power 
domain. According to the TRM, the NVJPG power domains must always be 
ungated while the NVDEC power domain is ungated. Model the dependency in 
device tree.

The first PMC patch updates the PMC driver to handle cases where a PMC 
power domain depends on another PMC power domain (other than the core 
domain). The second device tree patch adds the dependency in the device 
tree.

The PMC patch must be applied before the device tree patch or PMC probe 
can break.

Cheers
Mikko

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
---
Mikko Perttunen (2):
      soc/tegra: pmc: Support nested PMC power domains
      arm64: tegra: Make the NVDEC power domain a subdomain of NVJPG on Tegra210

 arch/arm64/boot/dts/nvidia/tegra210.dtsi |  1 +
 drivers/soc/tegra/pmc.c                  | 21 ++++++++++++++++++++-
 2 files changed, 21 insertions(+), 1 deletion(-)
---
base-commit: d419d682257d813f6cb7a28e42b35d0edf4ad038
change-id: 20261015-b4-t210-pd_nvdec-nesting-f7a7b7bc8568


             reply	other threads:[~2026-10-15  9:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-15  9:58 Mikko Perttunen [this message]
2026-10-15  9:58 ` [PATCH 1/2] soc/tegra: pmc: Support nested PMC power domains Mikko Perttunen
2026-10-15  9:58 ` [PATCH 2/2] arm64: tegra: Make the NVDEC power domain a subdomain of NVJPG on Tegra210 Mikko Perttunen
2026-10-27  6:54 ` [PATCH 0/2] Fix NVDEC boot " Karl Mehltretter

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