Messages in this thread | | | From | Andy Shevchenko <> | Date | Wed, 19 May 2021 14:31:37 +0300 | Subject | Re: [PATCH v2 0/2] am335x: set pinmux registers from pins debug file |
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On Wed, May 19, 2021 at 3:58 AM Dario Binacchi <dariobin@libero.it> wrote: > > > 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.
Even for debugfs it would be nice to have a piece of documentation. Because pin control is a quite sensitive area and if something goes wrong, it may damage the hardware.
> [1] https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf
-- With Best Regards, Andy Shevchenko
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