linux-kernel - Re: [PATCH] arm64: dts: rockchip: add spiX aliases for rk3399

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Message-ID: <2679180.WfB7C6de5F@diego>
Date:	Tue, 19 Jul 2016 20:56:47 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
Cc:	Brian Norris <briannorris@...omium.org>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	Brian Norris <computersforpeace@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	Caesar Wang <wxt@...k-chips.com>
Subject: Re: [PATCH] arm64: dts: rockchip: add spiX aliases for rk3399

Hi Uwe,

Am Dienstag, 19. Juli 2016, 08:39:55 schrieb Uwe Kleine-König:
> On Thu, Jul 14, 2016 at 06:24:33PM -0700, Brian Norris wrote:
> > It's nicer to see this:
> >     # ls -l /sys/bus/spi/devices/
> >     total 0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi0.0 ->
> >     ../../../devices/platform/ff1c0000.spi/spi_master/spi0/spi0.0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi1.0 ->
> >     ../../../devices/platform/ff1d0000.spi/spi_master/spi1/spi1.0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi2.0 ->
> >     ../../../devices/platform/ff1e0000.spi/spi_master/spi2/spi2.0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi5.0 ->
> >     ../../../devices/platform/ff200000.spi/spi_master/spi5/spi5.0> 
> > than this:
> >     # ls -l /sys/bus/spi/devices/
> >     total 0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi32763.0 ->
> >     ../../../devices/platform/ff200000.spi/spi_master/spi32763/spi32763.0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi32764.0 ->
> >     ../../../devices/platform/ff1e0000.spi/spi_master/spi32764/spi32764.0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi32765.0 ->
> >     ../../../devices/platform/ff1d0000.spi/spi_master/spi32765/spi32765.0
> >     lrwxrwxrwx 1 root root 0 Dec 31  1969 spi32766.0 ->
> >     ../../../devices/platform/ff1c0000.spi/spi_master/spi32766/spi32766.0> 
> > With the latter, it's much clearer which bus devices are on.
> > 
> > Signed-off-by: Brian Norris <briannorris@...omium.org>
> > ---
> > 
> >  arch/arm64/boot/dts/rockchip/rk3399.dtsi | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> > b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index
> > 4c84229789ef..b04abbfd4898 100644
> > --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> > +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
> > @@ -70,6 +70,12 @@
> > 
> >  		serial2 = &uart2;
> >  		serial3 = &uart3;
> >  		serial4 = &uart4;
> > 
> > +		spi0 = &spi0;
> > +		spi1 = &spi1;
> > +		spi2 = &spi2;
> > +		spi3 = &spi3;
> > +		spi4 = &spi4;
> > +		spi5 = &spi5;
> 
> Note that Rob Herring (with his dt-maintainer hat on) doesn't like these
> aliases.
> See for example:
> 	http://mid.gmane.org/20160705140546.GA10601@rob-hp-laptop

thanks for the heads up on this. I've dropped this patch again.


Thanks
Heiko