Re: [PATCH 7/8] dmaengine: tegra: Add Tegra264 support

[Frank Li]

On Tue, Feb 17, 2026 at 11:04:56PM +0530, Akhil R wrote:
> Update compatible and chip data to support GPCDMA in Tegra264.
>
> Signed-off-by: Akhil R <akhilrajeev@xxxxxxxxxx>
> ---

Reviewed-by: Frank Li <Frank.Li@xxxxxxx>

>  drivers/dma/tegra186-gpc-dma.c | 32 ++++++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>
> diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c
> index b8ca269fa3ba..11347c9f3215 100644
> --- a/drivers/dma/tegra186-gpc-dma.c
> +++ b/drivers/dma/tegra186-gpc-dma.c
> @@ -1342,6 +1342,25 @@ static const struct tegra_dma_channel_regs tegra186_reg_offsets = {
>  	.spare = 0x40,
>  };
>
> +static const struct tegra_dma_channel_regs tegra264_reg_offsets = {
> +	.csr = 0x0,
> +	.status = 0x4,
> +	.csre = 0x8,
> +	.src = 0xc,
> +	.dst = 0x10,
> +	.src_high = 0x14,
> +	.dst_high = 0x18,
> +	.mc_seq = 0x1c,
> +	.mmio_seq = 0x20,
> +	.wcount = 0x24,
> +	.wxfer = 0x28,
> +	.wstatus = 0x2c,
> +	.err_status = 0x34,
> +	.fixed_pattern = 0x38,
> +	.tz = 0x3c,
> +	.spare = 0x44,
> +};
> +
>  static const struct tegra_dma_chip_data tegra186_dma_chip_data = {
>  	.nr_channels = 32,
>  	.addr_bits = 40,
> @@ -1372,6 +1391,16 @@ static const struct tegra_dma_chip_data tegra234_dma_chip_data = {
>  	.terminate = tegra_dma_pause_noerr,
>  };
>
> +static const struct tegra_dma_chip_data tegra264_dma_chip_data = {
> +	.nr_channels = 32,
> +	.addr_bits = 48,
> +	.channel_reg_size = SZ_64K,
> +	.max_dma_count = SZ_1G,
> +	.hw_support_pause = true,
> +	.channel_regs = &tegra264_reg_offsets,
> +	.terminate = tegra_dma_pause_noerr,
> +};
> +
>  static const struct of_device_id tegra_dma_of_match[] = {
>  	{
>  		.compatible = "nvidia,tegra186-gpcdma",
> @@ -1382,6 +1411,9 @@ static const struct of_device_id tegra_dma_of_match[] = {
>  	}, {
>  		.compatible = "nvidia,tegra234-gpcdma",
>  		.data = &tegra234_dma_chip_data,
> +	}, {
> +		.compatible = "nvidia,tegra264-gpcdma",
> +		.data = &tegra264_dma_chip_data,
>  	}, {
>  	},
>  };
> --
> 2.50.1
>