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 0/2] am335x: set pinmux registers from pins debug file
Date: Sun, 16 May 2021 15:55:29 +0200 [thread overview]
Message-ID: <20210516135531.2203-1-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
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
next reply other threads:[~2021-05-16 13:55 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-16 13:55 Dario Binacchi [this message]
2021-05-16 13:55 ` [PATCH 2/2] pinctrl: single: set pinmux from pins debug file Dario Binacchi
2021-05-17 5:57 ` Tony Lindgren
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