[PATCH v4] spi: spi-imx: add DMA support

Robin Gong
2014-08-26T07:52:22Z

On Tue, Aug 26, 2014 at 09:26:40AM +0200, Marek Vasut wrote:
> On Tuesday, August 26, 2014 at 09:17:59 AM, Robin Gong wrote:
> > On Mon, Aug 25, 2014 at 10:07:22AM +0200, Marek Vasut wrote:
> > > On Saturday, August 23, 2014 at 02:13:55 AM, Robin Gong wrote:
> > > > After enable DMA
> > >
> > > Please also add a commit message which describes the change, not only
> > > some test results.
> > >
> > > [...]
> >
> > Ok, I will enrich it in next version.
> >
> > > > @@ -911,6 +1194,13 @@ static int spi_imx_probe(struct platform_device
> > > > *pdev) goto out_put_per;
> > > >
> > > > spi_imx->spi_clk = clk_get_rate(spi_imx->clk_per);
> > > >
> > > > + /*
> > > > + * Only validated on i.mx6 now, can remove the constrain if validated
> > > > on + * other chips.
> > > > + */
> > >
> > > Given that the check below tests for imx51_ecspi_devtype_data ... does
> > > that mean, that this code was never tested on MX51 and MX53, yet will be
> > > enabled for those chips and might possibly break them ?
> >
> > Yes, because there is no available mx51 mx53 boards in my hands. But I
> > think it won't bring too much trouble, since they share the same IP.
> > No, the patch won't break current MX51 and MX53, because they didn't enable
> > dma in dts setting,and they will keep use pio mode.
>
> Thanks for clearing this up, this was the important piece of information for me.
> Please put it into the commit message.
>
Okay. Thanks for your reminding.
> Best regards,
> Marek Vasut