Hi Biju,
On 30 June 2022 09:39 Biju Das wrote:
> As per RZ/N1 peripheral user manual(r01uh0752ej0100-rzn1-peripheral.pdf)
> rev 1.0.0 Mar,2019, the value for 8_WORD_BURST is 4(b2,b1=2’b10).
>
> This patch fixes the macro as per the user manual.
>
> Fixes: aa63d786cea2 ("serial: 8250: dw: Add support for DMA flow
> controlling devices")
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
Reviewed-by: Phil Edworthy <phil.edworthy@xxxxxxxxxxx>
> ---
> drivers/tty/serial/8250/8250_dw.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/tty/serial/8250/8250_dw.c
> b/drivers/tty/serial/8250/8250_dw.c
> index f57bbd32ef11..931490b27d6b 100644
> --- a/drivers/tty/serial/8250/8250_dw.c
> +++ b/drivers/tty/serial/8250/8250_dw.c
> @@ -47,7 +47,7 @@
> #define RZN1_UART_xDMACR_DMA_EN BIT(0)
> #define RZN1_UART_xDMACR_1_WORD_BURST (0 << 1)
> #define RZN1_UART_xDMACR_4_WORD_BURST (1 << 1)
> -#define RZN1_UART_xDMACR_8_WORD_BURST (3 << 1)
> +#define RZN1_UART_xDMACR_8_WORD_BURST (2 << 1)
> #define RZN1_UART_xDMACR_BLK_SZ(x) ((x) << 3)
>
> /* Quirks */
> --
> 2.25.1
Thanks
Phil
