Re: [PATCH 1/3] SPI: Ingenic: Add support for use GPIO as chip select line.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Sat, Apr 16, 2022 at 05:36:46PM +0100, Paul Cercueil wrote:
> Le sam., avril 16 2022 at 19:55:13 +0800, Zhou Yanjie
> > On 2022/4/15 下午11:00, Paul Cercueil wrote:

> > > > -    ctlr->num_chipselect = 2;
> > > > +    ctlr->use_gpio_descriptors = true;

> > > I wonder if this should be set conditionally instead. Maybe set it
> > > to "true" if the "num-cs" property exists?

> > I'm not too sure, but it seems some other drivers like "spi-sun6i.c",
> > "spi-stm32.c", "spi-s3c64xx.c", "spi-pic32.c", etc. set it
> > unconditionally.

> Ok, maybe Mark can enlighten us here.

use_gpio_descriptions is just selecting which version of the GPIO APIs
we should use if we're handling GPIOs rather than if we should handle
them.  We've got one last driver using the numerical GPIO APIs, once
that one is converted we should just be able to drop the flag since
everything will be using descriptors.

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux