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
next 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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