[PATCH] mtd/m25p80: add device tree probe support

[Marek Vasut]

Dear Shawn Guo,

> On Mon, Jun 25, 2012 at 06:01:22PM +0200, Marek Vasut wrote:
> > Dear Shawn Guo,
> > 
> > > On Sat, Jun 23, 2012 at 04:15:18AM +0200, Marek Vasut wrote:
> > > > So is there any particular reason why this wasn't applied?
> > > 
> > > Let me remind Artem by resending the patch tomorrow.
> > 
> > Actually ... the SPI does have the heuristics to probe this chip without
> > the patch. But there was this discussion about them eventually being
> > removed. That was a point raised by you I think. Is that still valid?
> 
> That was a point raised by Grant.  IIRC, the reason I made the patch
> is my system does not probe the device without the patch.  I can
> retest, and if it's true that the patch is not necessarily needed,
> I will probably let it be.

116                         ssp2: ssp at 80014000 {
117                                 #address-cells = <1>;
118                                 #size-cells = <0>;
119                                 compatible = "fsl,imx28-spi";
120                                 pinctrl-names = "default";
121                                 pinctrl-0 = <&spi2_pins_a>;
122                                 status = "okay";
123 
124                                 flash: m25p80 at 0 {
125                                         #address-cells = <1>;
126                                         #size-cells = <1>;
127                                         compatible = "m25p80";
128                                         spi-max-frequency = <25000000>;
129                                         reg = <0>;
130                                 };
131                         };

I use this + my SPI patches I submitted recently.

Best regards,
Marek Vasut