linux-kernel - Re: [PATCH] pinctrl: aspeed: Improve debug output

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Date:   Thu, 16 Jul 2020 10:31:34 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Joel Stanley <joel@....id.au>
Cc:     linux-aspeed <linux-aspeed@...ts.ozlabs.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Andrew Jeffery <andrew@...id.au>
Subject: Re: [PATCH] pinctrl: aspeed: Improve debug output

On Wed, Jul 1, 2020 at 5:00 AM Joel Stanley <joel@....id.au> wrote:

> From: Andrew Jeffery <andrew@...id.au>
>
> We need to iterate over each pin in a group for a function and
> disable higher priority mux configurations on the pin before finally
> muxing the relevant function's signal. With the current debug output it
> is hard to track what register output is relevant to which operation, so
> break up the actions in the debug output by providing some more context.
>
> Before:
>
>     [    5.446656] aspeed-g6-pinctrl 1e6e2000.syscon:pinctrl: request pin 37 (B26) for 1e780000.gpio:341
>     [    5.447377] Want SCU414[0x00000020]=0x1, got 0x0 from 0x00000000
>     [    5.447854] Want SCU4B4[0x00000020]=0x1, got 0x0 from 0x00000000
>     [    5.448340] Want SCU4B4[0x00000020]=0x1, got 0x0 from 0x00000000
>
> After:
>
>     [    5.298053] Muxing pin 37 for GPIO
>     [    5.298294] Disabling signal NRI4 for NRI4
>     [    5.298593] Want SCU414[0x00000020]=0x1, got 0x0 from 0x00000000
>     [    5.298983] Disabling signal RGMII4RXD1 for RGMII4
>     [    5.299309] Want SCU4B4[0x00000020]=0x1, got 0x0 from 0x00000000
>     [    5.299694] Disabling signal RMII4RXD1 for RMII4
>     [    5.300014] Want SCU4B4[0x00000020]=0x1, got 0x0 from 0x00000000
>     [    5.300396] Enabling signal GPIOE5 for GPIOE5
>     [    5.300687] Muxed pin 37 as GPIOE5
>
> Signed-off-by: Andrew Jeffery <andrew@...id.au>
> Signed-off-by: Joel Stanley <joel@....id.au>

Patch applied, thanks!

Yours,
Linus Walleij