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Mon, 30 Mar 2026 07:46:30 -0700 From: Akhil R To: Vinod Koul , Frank Li , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , "Jonathan Hunter" , Laxman Dewangan , Philipp Zabel , , , , CC: Akhil R , Frank Li Subject: [PATCH v5 09/10] dmaengine: tegra: Add Tegra264 support Date: Mon, 30 Mar 2026 20:14:55 +0530 Message-ID: <20260330144456.13551-10-akhilrajeev@nvidia.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260330144456.13551-1-akhilrajeev@nvidia.com> References: <20260330144456.13551-1-akhilrajeev@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE39:EE_|IA1PR12MB9740:EE_ X-MS-Office365-Filtering-Correlation-Id: d25d8ba1-cec3-4a43-6dca-08de8e6b2f0b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700016|1800799024|7416014|376014|921020|22082099003|56012099003|18002099003; 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charset="utf-8" Add compatible and chip data to support GPCDMA in Tegra264, which has differences in register layout and address bits compared to previous versions. Signed-off-by: Akhil R Reviewed-by: Frank Li --- drivers/dma/tegra186-gpc-dma.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c index 64743d852dda..0b7faf8bb80b 100644 --- a/drivers/dma/tegra186-gpc-dma.c +++ b/drivers/dma/tegra186-gpc-dma.c @@ -1319,6 +1319,23 @@ static const struct tegra_dma_channel_regs tegra186_= reg_offsets =3D { .fixed_pattern =3D 0x34, }; =20 +static const struct tegra_dma_channel_regs tegra264_reg_offsets =3D { + .csr =3D 0x0, + .status =3D 0x4, + .csre =3D 0x8, + .src =3D 0xc, + .dst =3D 0x10, + .src_high =3D 0x14, + .dst_high =3D 0x18, + .mc_seq =3D 0x1c, + .mmio_seq =3D 0x20, + .wcount =3D 0x24, + .wxfer =3D 0x28, + .wstatus =3D 0x2c, + .err_status =3D 0x34, + .fixed_pattern =3D 0x38, +}; + static const struct tegra_dma_chip_data tegra186_dma_chip_data =3D { .nr_channels =3D 32, .addr_bits =3D 39, @@ -1349,6 +1366,16 @@ static const struct tegra_dma_chip_data tegra234_dma= _chip_data =3D { .terminate =3D tegra_dma_pause_noerr, }; =20 +static const struct tegra_dma_chip_data tegra264_dma_chip_data =3D { + .nr_channels =3D 32, + .addr_bits =3D 41, + .channel_reg_size =3D SZ_64K, + .max_dma_count =3D SZ_1G, + .hw_support_pause =3D true, + .channel_regs =3D &tegra264_reg_offsets, + .terminate =3D tegra_dma_pause_noerr, +}; + static const struct of_device_id tegra_dma_of_match[] =3D { { .compatible =3D "nvidia,tegra186-gpcdma", @@ -1359,6 +1386,9 @@ static const struct of_device_id tegra_dma_of_match[]= =3D { }, { .compatible =3D "nvidia,tegra234-gpcdma", .data =3D &tegra234_dma_chip_data, + }, { + .compatible =3D "nvidia,tegra264-gpcdma", + .data =3D &tegra264_dma_chip_data, }, { }, }; --=20 2.50.1