linux-kernel - [PATCH 0/2] am335x: set pinmux registers from pins debug file

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Message-Id: <20210516135531.2203-1-dariobin@libero.it>
Date:   Sun, 16 May 2021 15:55:29 +0200
From:   Dario Binacchi <dariobin@...ero.it>
To:     linux-kernel@...r.kernel.org
Cc:     Dario Binacchi <dariobin@...ero.it>,
        Haojian Zhuang <haojian.zhuang@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Tony Lindgren <tony@...mide.com>,
        linux-arm-kernel@...ts.infradead.org, linux-gpio@...r.kernel.org,
        linux-omap@...r.kernel.org
Subject: [PATCH 0/2] am335x: set pinmux registers from pins debug file


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



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