arm: kirkwood: add support for ZyXEL NSA310

Hello, Andrew

> > +#define NSA310_GPIO_LED_ESATA_GREEN	12
> > <..>
> > +#define NSA310_GPIO_POWER_OFF		48
>
> It looks like most of these are not used. Please remove them.

True. Fixed.

> > +static struct mtd_partition nsa310_mtd_parts[] = {
> > +	{
> > +		.name	= "uboot",
> > +		.offset	= 0,
> > +		.size	= 0x100000,
> > +		.mask_flags = MTD_WRITEABLE,
> > +	}, {
> > <..>
> You should be able to put all that into DT. Take a look at

Correct. I did the conversion and tested that the partitions
can be read with dd and produce exactly the same data before and
after conversion. So, the partition offsets at least should be fine.

> > +static struct i2c_board_info __initdata nsa310_i2c_info[] = {
> > +	{ I2C_BOARD_INFO("adt7476", 0x2e) },
> > +};
>
> You can also do this in DT as well. kirkwood-ts219.dtsi has
>
>                 i2c@11000 {
>                         status = "okay";
>                         clock-frequency = <400000>;

Ok, I did convert the i2c definition to use the devicetree.
The adt7476 device itself is not at reach of device tree,
AFAIK and requires more work at there?

Thanks for your valuable comments. Following is a new patch that
should address the problems and mistakes you pointed and also
some of the pointed by Jason Cooper. The nand and i2c are now
defined at DT and I also removed the pointless defines and
ARM_APPENDED_DTB. It is based against the Linus' official
3.6 version.

Best regards,
Tero

Signed-off-by: Jason Cooper <jason@lakedaemon.net>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mach-kirkwood/Kconfig b/arch/arm/mach-kirkwood/Kconfig
index 1d5283fad014..a5b766e13304 100644
--- a/arch/arm/mach-kirkwood/Kconfig
+++ b/arch/arm/mach-kirkwood/Kconfig
@@ -259,6 +259,14 @@ config MACH_T5325
           Say 'Y' here if you want your kernel to support the
           HP t5325 Thin Client.
 
+config MACH_NSA310_DT
+        bool "ZyXEL NSA-310 (Flattened Device Tree)"
+        select ARCH_KIRKWOOD_DT
+        select ARM_ATAG_DTB_COMPAT
+        help
+          Say 'Y' here if you want your kernel to support the
+          ZyXEL NSA-310 board (Flattened Device Tree).
+
 endmenu
 
 endif