Re: [PATCH v2 3/4] dmaengine: dw-axi-dmac: Fix CH_CFG2 channel priority position

[Frank Li]

On Tue, Sep 01, 2026 at 02:16:06PM +0800, Jia Wang wrote:
> The CH_CFG2 channel priority field occupies bits 51:47 of the 64-bit
> channel configuration register, corresponding to bits 19:15 of CH_CFG2_H.
>
> The driver currently shifts the priority value by 20, programming the
> wrong bits. Use bit 15 as the field position.
>
> Fixes: 824351668a41 ("dmaengine: dw-axi-dmac: support DMAX_NUM_CHANNELS > 8")
> Signed-off-by: Jia Wang <wangjia@xxxxxxxxxxxxx>
> ---

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

>  drivers/dma/dw-axi-dmac/dw-axi-dmac.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
> index 67cc199e24d1..97451bb8b16a 100644
> --- a/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
> +++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac.h
> @@ -327,7 +327,7 @@ enum {
>  #define CH_CFG2_H_TT_FC_POS		0
>  #define CH_CFG2_H_HS_SEL_SRC_POS	3
>  #define CH_CFG2_H_HS_SEL_DST_POS	4
> -#define CH_CFG2_H_PRIORITY_POS		20
> +#define CH_CFG2_H_PRIORITY_POS		15
>
>  /**
>   * DW AXI DMA channel interrupts
>
> --
> 2.34.1
>