linux-kernel - Re: [PATCH 0/7] Pinctrl support for Zynq

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Date:	Wed, 05 Nov 2014 06:56:44 +0100
From:	Andreas Färber <afaerber@...e.de>
To:	Soren Brinkmann <soren.brinkmann@...inx.com>
CC:	Linus Walleij <linus.walleij@...aro.org>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Heiko Stuebner <heiko@...ech.de>, linux-sh@...r.kernel.org,
	Michal Simek <michal.simek@...inx.com>,
	linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	Alessandro Rubini <rubini@...pv.it>,
	Olof Johansson <olof@...om.net>,
	Punnaiah Choudary Kalluri 
	<punnaiah.choudary.kalluri@...inx.com>,
	Andreas Olofsson <andreas@...pteva.com>
Subject: Re: [PATCH 0/7] Pinctrl support for Zynq

Hi Sören,

Am 03.11.2014 um 20:05 schrieb Soren Brinkmann:
> Soren Brinkmann (7):
>   pinctrl: pinconf-generic: Declare dt_params/conf_items const
>   pinctrl: pinconf-generic: Infer map type from DT property
>   pinctrl: pinconf-generic: Allow driver to specify DT params
>   pinctrl: zynq: Document DT binding
>   pinctrl: Add driver for Zynq
>   ARM: zynq: Enable pinctrl
>   ARM: zynq: DT: Add pinctrl information

Thanks for your work on this,

Tested-by: Andreas Färber <afaerber@...e.de>

I've tracked down all 54 MIO pins of the Parallella and cooked up the
equivalent DT patch. QSPI and USB still seem to be missing drivers
upstream; I reused the SPI driver for the QSPI with pinctrl and
Punnaiah's chipidea driver (not fully working) without pinctrl for lack
of group/function definitions. For testing purposes I've configured a
heartbeat trigger for the USER_LED (CR10).

To my disappointment these pinctrl additions did not fix one issue:
Whenever a write access to be handled by the bitstream (0x808f0f04) is
performed, the board hangs and the heartbeat stops. Would a bug in the
bitstream allow this to happen, or are more drivers missing to actually
make use of the PL in general? With a downstream ADI/Xilinx 3.12 kernel
that problem does not surface.

Regards,
Andreas

https://github.com/afaerber/linux/commits/parallella-next

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