linux-kernel - Re: [PATCH v2] pinctrl: rockchip: fix pull setting error for rk3399

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Date:	Wed, 11 May 2016 09:11 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Caesar Wang <wxt@...k-chips.com>
Cc:	Linus Walleij <linus.walleij@...aro.org>, dianders@...omium.org,
	briannorris@...gle.com, smbarber@...gle.com,
	linux-rockchip@...ts.infradead.org, huangtao@...k-chips.com,
	eddie.cai@...k-chips.com, David Wu <david.wu@...k-chips.com>,
	linux-gpio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] pinctrl: rockchip: fix pull setting error for rk3399

Am Mittwoch, 11. Mai 2016, 11:39:28 schrieb Caesar Wang:
> From: David Wu <david.wu@...k-chips.com>
> 
> This patch fixes the pinctrl pull bias setting, since the pull up/down
> setting is the contrary for gpio0(just the gpio0a and gpio0b) and
> gpio2(just the gpio2c and gpio2d).
> 
> From the TRM said, the gpio0a pull polarity setting:
> gpio0a_p
> GPIO0A PE/PS programmation section, every
> GPIO bit corresponding to 2bits[PS:PE]
> 2'b00: Z(Normal operation);
> 2'b11: weak 1(pull-up);
> 2'b01: weak 0(pull-down);
> 2'b10: Z(Normal operation);

This could mention gpio2c and gpio2d as well, as the code now does.

Otherwise the patch looks good and I also compared with the TRM, so

Reviewed-by: Heiko Stuebner <heiko@...ech.de>