Messages in this thread | | | From | "Yang, Wenyou" <> | Subject | RE: [v4 PATCH 12/12] ARM: dts: add spi nodes for the atmel boards | Date | Wed, 6 Feb 2013 01:34:43 +0000 |
| |
> -----Original Message----- > From: Jean-Christophe PLAGNIOL-VILLARD [mailto:plagnioj@jcrosoft.com] > Sent: 2013年2月6日 3:50 > To: Yang, Wenyou > Cc: linux-arm-kernel@lists.infradead.org; linux-kernel@vger.kernel.org; Ferre, > Nicolas; richard.genoud@gmail.com; Lin, JM; linux@arm.linux.org.uk > Subject: Re: [v4 PATCH 12/12] ARM: dts: add spi nodes for the atmel boards > > On 15:34 Mon 14 Jan , Wenyou Yang wrote: > > From: Richard Genoud <richard.genoud@gmail.com> > > > > Signed-off-by: Richard Genoud <richard.genoud@gmail.com> > > [wenyou.yang@atmel.com: added spi nodes for the sam9263ek, sam9g20ek, > sam9m10g45ek and sam9n12ek boards] > > Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> > > Cc: linux@arm.linux.org.uk > > --- > > arch/arm/boot/dts/at91sam9263ek.dts | 14 > ++++++++++++++ > > arch/arm/boot/dts/at91sam9g20ek_common.dtsi | 14 > ++++++++++++++ > > arch/arm/boot/dts/at91sam9m10g45ek.dts | 14 > ++++++++++++++ > > arch/arm/boot/dts/at91sam9n12ek.dts | 14 > ++++++++++++++ > > arch/arm/boot/dts/at91sam9x5ek.dtsi | 14 ++++++++++++++ > > 5 files changed, 70 insertions(+) > > > > diff --git a/arch/arm/boot/dts/at91sam9263ek.dts > b/arch/arm/boot/dts/at91sam9263ek.dts > > index 1eb0872..63ba57b 100644 > > --- a/arch/arm/boot/dts/at91sam9263ek.dts > > +++ b/arch/arm/boot/dts/at91sam9263ek.dts > > @@ -79,6 +79,20 @@ > > }; > > }; > > }; > > + > > + spi0: spi@fffa4000 { > > + status = "okay"; > > + cs-gpios = <&pioA 5 0 > > + &pioA 3 0 > > + &pioA 4 0 > > + &pioB 11 0 > NACK > > we no use that much as cs-gpios on this hw
Thanks for your feedback.
Listing the all choices for cs-gpios, one cs-gpio is selected by reg value. Maybe listing one cs-gpio is OK. I will try it.
I am going to dig the feasibility of removing cs-gpios.
> > + >; > > + mtd_dataflash@0 { > > + compatible = "atmel,at45", "atmel,dataflash"; > > + spi-max-frequency = <50000000>; > > + reg = <0>; > > + }; > > + }; > > }; > > > > nand0: nand@40000000 { > > diff --git a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi > b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi > > index da15e83..49ad49e 100644 > > --- a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi > > +++ b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi > > @@ -96,6 +96,20 @@ > > status = "okay"; > > pinctrl-0 = <&pinctrl_ssc0_tx>; > > }; > > + > > + spi0: spi@fffc8000 { > > + status = "okay"; > > + cs-gpios = <&pioA 3 0 > > + &pioC 11 0 > > + &pioC 16 0 > > + &pioC 17 0 > ditto and so on > > you must only provife the gpio use by the hw > > + >; > > + mtd_dataflash@0 { > > + compatible = "atmel,at45", "atmel,dataflash"; > > + spi-max-frequency = <50000000>; > > + reg = <1>; > > + }; > > + }; > > }; > > > > nand0: nand@40000000 { > > diff --git a/arch/arm/boot/dts/at91sam9m10g45ek.dts > b/arch/arm/boot/dts/at91sam9m10g45ek.dts > > index 20c3191..275f22d 100644 > > --- a/arch/arm/boot/dts/at91sam9m10g45ek.dts > > +++ b/arch/arm/boot/dts/at91sam9m10g45ek.dts > > @@ -102,6 +102,20 @@ > > }; > > }; > > }; > > + > > + spi0: spi@fffa4000{ > > + status = "okay"; > > + cs-gpios = <&pioB 3 0 > > + &pioB 18 0 > > + &pioB 19 0 > > + &pioD 27 0 > > + >; > > + mtd_dataflash@0 { > > + compatible = "atmel,at45", "atmel,dataflash"; > > + spi-max-frequency = <13000000>; > > + reg = <0>; > > + }; > > + }; > > }; > > > > nand0: nand@40000000 { > > diff --git a/arch/arm/boot/dts/at91sam9n12ek.dts > b/arch/arm/boot/dts/at91sam9n12ek.dts > > index 0376bf4..4eeca7b 100644 > > --- a/arch/arm/boot/dts/at91sam9n12ek.dts > > +++ b/arch/arm/boot/dts/at91sam9n12ek.dts > > @@ -67,6 +67,20 @@ > > }; > > }; > > }; > > + > > + spi0: spi@f0000000 { > > + status = "okay"; > > + cs-gpios = <&pioA 14 0 > > + &pioA 7 0 > > + &pioA 1 0 > > + &pioB 3 0 > > + >; > > + m25p80@0 { > > + compatible = "atmel,at25df321a"; > > + spi-max-frequency = <50000000>; > > + reg = <0>; > > + }; > > + }; > > }; > > > > nand0: nand@40000000 { > > diff --git a/arch/arm/boot/dts/at91sam9x5ek.dtsi > b/arch/arm/boot/dts/at91sam9x5ek.dtsi > > index 8a7cf1d..ca0a056 100644 > > --- a/arch/arm/boot/dts/at91sam9x5ek.dtsi > > +++ b/arch/arm/boot/dts/at91sam9x5ek.dtsi > > @@ -84,6 +84,20 @@ > > }; > > }; > > }; > > + > > + spi0: spi@f0000000 { > > + status = "okay"; > > + cs-gpios = <&pioA 14 0 > > + &pioA 7 0 > > + &pioA 1 0 > > + &pioB 3 0 > > + >; > > + m25p80@0 { > > + compatible = "atmel,at25df321a"; > > + spi-max-frequency = <50000000>; > > + reg = <0>; > > + }; > > + }; > > }; > > > > usb0: ohci@00600000 { > > -- > > 1.7.9.5 > >
Best Regards, Wenyou Yang
| |