Re: [PATCH v2 4/4] ARM: dts: mt8135: Add pinctrl node for mt8135.

From: Sascha Hauer
Date: Fri Sep 26 2014 - 01:33:46 EST


Linus,

On Wed, Sep 24, 2014 at 02:40:44PM +0200, Sascha Hauer wrote:
> > I haven't got to reviewing the driver, but this looks just wrong.
> >
> > Have the magic numbers in the driver.
> >
> > Use strings to describe functions, not integers.
>
> Interrupts, clocks, gpios, dma channels, nearly everything in the device tree is
> arbitrarily numbered. Instead of "irq-i2c0" we have <0 36 IRQ_TYPE_LEVEL_HIGH>
> in the device tree. These numbers can be resolved efficiently in the
> driver by shifting them to get a bitmask or by adding them as offset to
> a register base.
> Why do you want to make pinctrl different? Thanks to the recently
> introduced defines in the device trees these numbers are not magic at
> all anymore.

Any opinions on this?

Sascha

--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/