Re: [PATCH v2 2/3] spi: dw-mmio: update dw_spi_mmio_of_match struct with thead

[Serge Semin <fancer.lancer@xxxxxxxxx>]

Hi folks

On Mon, Jul 01, 2024 at 08:17:29AM -0500, Samuel Holland wrote:
> Hi Kanak,
> 
> On 2024-07-01 7:13 AM, Kanak Shilledar wrote:
> > updated the struct of_device_id dw_spi_mmio_of_match to include
> > the updated compatible value for TH1520 SoC ("thead,th1520-spi")
> > to initialize with dw_spi_pssi_init().
> > 
> > Signed-off-by: Kanak Shilledar <kanakshilledar@xxxxxxxxx>
> > ---
> > Changes in v2:
> > - Separated from a single patch file.
> > ---
> >  drivers/spi/spi-dw-mmio.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
> > index 819907e332c4..39e3d46ebf5d 100644
> > --- a/drivers/spi/spi-dw-mmio.c
> > +++ b/drivers/spi/spi-dw-mmio.c
> > @@ -419,6 +419,7 @@ static const struct of_device_id dw_spi_mmio_of_match[] = {
> >  	{ .compatible = "microchip,sparx5-spi", dw_spi_mscc_sparx5_init},
> >  	{ .compatible = "canaan,k210-spi", dw_spi_canaan_k210_init},
> >  	{ .compatible = "amd,pensando-elba-spi", .data = dw_spi_elba_init},
> > +	{ .compatible = "thead,th1520-spi", .data = dw_spi_pssi_init},
> 
> Your binding requires snps,dw-apb-ssi as a fallback compatible string, which is
> already supported by this driver and uses the same match data. So you don't need
> this patch; its only effect is to make the kernel larger.

Agree with Samuel comment. Indeed there is no point in adding the
vendor-specific device-name supported in the driver if the fallback
compatible works as-is.