[PATCH] ARM: dts: imx51-babbage: Fix ULPI PHY reset modelling

Shawn Guo shawn.guo at linaro.org
Tue Jan 6 04:43:45 PST 2015


On Mon, Jan 05, 2015 at 03:19:08PM -0200, Fabio Estevam wrote:
> GPIO2_5 is the reset GPIO for the USB3317 ULPI PHY. Instead of modelling it as
> a regulator, the correct approach is to use the 'reset_gpios' property of the
> "usb-nop-xceiv" node.
> 
> GPIO1_7 is the reset GPIO for the USB2517 USB hub. As we currently don't have
> dt bindings to describe a HUB reset, let's keep using the regulator approach.
> 
> Rename the regulator to 'reg_hub_reset' to better describe its function and bind
> it with the USB host1 port instead.
> 
> USB host support has been introduced by commit 9bf206a9d13be3 ("ARM: dts:
> imx51-babbage: Add USB Host1 support"), which landed in 3.16 and it seems that
> USB has only been functional due to previous bootloader initialization.
> 
> With this patch applied we can get USB host to work without relying on the 
> bootloader.
> 
> Cc: <stable at vger.kernel.org> # 3.16+
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>

Applied, thanks.



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