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From: Dario Binacchi <dariobin@libero.it>
To: linux-kernel@vger.kernel.org
Cc: Dario Binacchi <dariobin@libero.it>,
	Haojian Zhuang <haojian.zhuang@linaro.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Tony Lindgren <tony@atomide.com>,
	linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
	linux-omap@vger.kernel.org
Subject: [PATCH v2 0/2] am335x: set pinmux registers from pins debug file
Date: Mon, 17 May 2021 22:00:00 +0200	[thread overview]
Message-ID: <20210517200002.6316-1-dariobin@libero.it> (raw)


The patch was born from the need to change the slew rate of the LCD pins
of a custom AM335x board during EMC tests. The AM335x, as described in a
note in section 9.1 of its reference manual [1], is unable to write
pinmux registers from user space. The series now makes it possible to
write these registers from the pins debug file.

[1] https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf


Changes in v2:
- Remove CONFIG_SOC_AM33XX dependency.

Dario Binacchi (2):
  pinctrl: core: configure pinmux from pins debug file
  pinctrl: single: set pinmux from pins debug file

 drivers/pinctrl/core.c           | 56 ++++++++++++++++++++++++++++++--
 drivers/pinctrl/pinctrl-single.c | 20 ++++++++++++
 include/linux/pinctrl/pinctrl.h  |  2 ++
 3 files changed, 76 insertions(+), 2 deletions(-)

-- 
2.17.1


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             reply	other threads:[~2021-05-17 20:02 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-17 20:00 Dario Binacchi [this message]
2021-05-17 20:00 ` [PATCH v2 2/2] pinctrl: single: set pinmux " Dario Binacchi
2021-05-18  6:05   ` Tony Lindgren
2021-05-18  8:57     ` Dario Binacchi
2021-05-21  9:25       ` Tony Lindgren
2021-05-19 11:31 ` [PATCH v2 0/2] am335x: set pinmux registers " Andy Shevchenko

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