[PATCH] dma: ti: k3-udma: Fix BCDMA probe by adding check for MMR_RFLOW

[Jon Humphreys]

Prasanth Babu Mantena <p-mantena at ti.com> writes:

> RFLOW config related MMR does not exist incase of BCDMA.
> Add check to bypass the RFLOW MMR extraction.
> Without this, the probe sequence fails checking for
> the MMR_RFLOW region, which is valid only for packet based
> DMA and obselete for BCDMA.
>
> Signed-off-by: Prasanth Babu Mantena <p-mantena at ti.com>
> ---
>  drivers/dma/ti/k3-udma.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
> index dac4023ccfd..3013c4741d0 100644
> --- a/drivers/dma/ti/k3-udma.c
> +++ b/drivers/dma/ti/k3-udma.c
> @@ -1331,6 +1331,8 @@ static int udma_get_mmrs(struct udevice *dev)
>  			continue;
>  		if (i == MMR_RCHANRT && ud->rchan_cnt == 0)
>  			continue;
> +		if (i == MMR_RFLOW && ud->match_data->type == DMA_TYPE_BCDMA)
> +			continue;
>  
>  		ud->mmrs[i] = dev_read_addr_name_ptr(dev, mmr_names[i]);
>  		if (!ud->mmrs[i])
> -- 
> 2.34.1

Tested-by: Jonathan Humphreys <j-humphreys at ti.com>