Re: [PATCH RFC v2 5/6] ARM: pxa: Convert Spitz hsync to GPIO descriptors

[Duje Mihanović]

On Tuesday, September 26, 2023 6:19:23 PM CEST Andy Shevchenko wrote:
> On Tue, Sep 26, 2023 at 05:46:26PM +0200, Duje Mihanović wrote:
> >  	gpiod_add_lookup_table(&spitz_ads7846_gpio_table);
> >  	gpiod_add_lookup_table(&spitz_spi_gpio_table);
> > 
> > +	hsync = gpiod_get(NULL, "hsync", GPIOD_IN);
> > +	if (IS_ERR(hsync)) {
> > +		pr_err("Failed to get hsync GPIO: %ld\n", PTR_ERR(hsync));
> > +		return;
> > +	}
> > 
> >  	pxa2xx_set_spi_info(2, &spitz_spi_info);
> >  	spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices));
> 
> Yeah, but the question is, if GPIO request fails, can we instantiate at 
least one device and move on?

I see. If the touchscreen is the first out of 3 devices in that array, would 
something like this do:

spi_register_board_info(ARRAY_AND_SIZE(&spitz_spi_devices[1]));

Regards,
Duje