Re: [PATCH 6/6] ARM: dts: hummingboard: gpio-ir on gpio 3,5

On Sat, Aug 23, 2014 at 10:56:37AM -0300, Fabio Estevam wrote:

On Sat, Aug 23, 2014 at 10:36 AM, Russell King - ARM Linux
[off-list ref] wrote:

quoted

On Sat, Aug 23, 2014 at 10:32:23AM -0300, Fabio Estevam wrote:

quoted

On Sat, Aug 23, 2014 at 6:11 AM, Russell King
[off-list ref] wrote:

quoted

-                               MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x80000000
+                               MX6QDL_PAD_EIM_DA5__GPIO3_IO05 0x80000000

It would be better to replace the '0x80000000' with the real iomux
value (like 0x1b0b0 for example), so that we do not need to rely on
the bootloader doing the correct configuration for us.

I'd just end up choosing something which appears to work - I've no idea
at present what an appropriate value should be here.

In the working system, you could read the register:

IOMUXC_SW_PAD_CTL_PAD_EIM_AD05 (address: 0x20E043C)

Most likely it will return the default value of 0xb0b1 if the
bootloader has not re-configured it.

Most of the pins not associated with booting the kernel are left
unconfigured by the boot loader - that's because uboot SPL has very
little space for such things.

Rabeeh has just told me that 0x1b0b1 would be a better value for it.
I'll add an additional patch to the series for that, rather than
modifying Rabeeh's original patch.

-- 
FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up
according to speedtest.net.
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html