[PATCH v2 1/4] spi: s3c64xx: changed to PIO mode if there is no DMA

[Krzysztof Kozlowski]

On 19/04/2023 08:06, Jaewon Kim wrote:
> Polling mode supported with qurik if there was no DMA in the SOC.
> However, there are cased where we cannot or do not want to use DMA.
> To support this case, if DMA is not set, it is switched to polling mode.
> 

(...)

>  #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
> -#define is_polling(x)	(x->port_conf->quirks & S3C64XX_SPI_QUIRK_POLL)
> +#define is_polling(x)	(x->cntrlr_info->polling)
>  
>  #define RXBUSY    (1<<2)
>  #define TXBUSY    (1<<3)
> @@ -1067,6 +1066,11 @@ static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev)
>  		sci->num_cs = temp;
>  	}
>  
> +	if (!of_find_property(dev->of_node, "dmas", NULL)) {

of_property_present()


Best regards,
Krzysztof