From: Akhil R <akhilrajeev@nvidia.com>
To: <ldewangan@nvidia.com>, <jonathanh@nvidia.com>,
<vkoul@kernel.org>, <thierry.reding@gmail.com>,
<p.zabel@pengutronix.de>, <dmaengine@vger.kernel.org>,
<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <akhilrajeev@nvidia.com>
Subject: [PATCH v2 0/3] Tegra GCPDMA: Add dma-channel-mask support
Date: Mon, 19 Sep 2022 16:55:56 +0530 [thread overview]
Message-ID: <20220919112559.58195-1-akhilrajeev@nvidia.com> (raw)
Read dma-channel-mask from device tree and register only the
specified channels. This is useful to reserve some channels for the
firmware.
Also update the channel number and interrupts to include all 32
channels. The current driver was using only 31 channels as one
channel was reserved for firmware. Now with this change, the driver
can align more to the actual hardware.
v1->v2:
* Reversed the operands and used BIT macro in 'if' condition.
* Fixed warning reported-by: kernel test robot <lkp@intel.com>
Akhil R (3):
dt-bindings: dmaengine: Add dma-channel-mask to Tegra GPCDMA
arm64: tegra: Add dma-channel-mask in GPCDMA node
dmaengine: tegra: Add support for dma-channel-mask
.../bindings/dma/nvidia,tegra186-gpc-dma.yaml | 7 +++-
arch/arm64/boot/dts/nvidia/tegra186.dtsi | 4 +-
arch/arm64/boot/dts/nvidia/tegra194.dtsi | 4 +-
arch/arm64/boot/dts/nvidia/tegra234.dtsi | 4 +-
drivers/dma/tegra186-gpc-dma.c | 37 +++++++++++++++----
5 files changed, 45 insertions(+), 11 deletions(-)
--
2.17.1
next reply other threads:[~2022-09-19 11:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-19 11:25 Akhil R [this message]
2022-09-19 11:25 ` [PATCH v2 1/3] dt-bindings: dmaengine: Add dma-channel-mask to Tegra GPCDMA Akhil R
2022-09-23 10:06 ` Jon Hunter
2022-09-19 11:25 ` [PATCH v2 2/3] arm64: tegra: Add dma-channel-mask in GPCDMA node Akhil R
2022-09-23 10:06 ` Jon Hunter
2022-09-19 11:25 ` [PATCH v2 3/3] dmaengine: tegra: Add support for dma-channel-mask Akhil R
2022-09-23 10:08 ` Jon Hunter
2022-09-23 10:17 ` Akhil R
2022-09-23 10:50 ` Jon Hunter
2022-09-23 11:09 ` Akhil R
2022-09-23 11:45 ` Jon Hunter
2022-09-23 16:22 ` Akhil R
2022-09-23 10:50 ` Jon Hunter
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