linux-kernel - Re: [PATCH V3 1/6] tty: serial: meson: Drop the legacy compatible strings and clock code

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Date:   Thu, 30 Dec 2021 23:22:25 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     Yu Tu <yu.tu@...ogic.com>
Cc:     linux-serial@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Neil Armstrong <narmstrong@...libre.com>,
        Vyacheslav <adeep@...ina.in>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>
Subject: Re: [PATCH V3 1/6] tty: serial: meson: Drop the legacy compatible
 strings and clock code

On Thu, Dec 30, 2021 at 11:21 AM Yu Tu <yu.tu@...ogic.com> wrote:
>
> All mainline .dts files have been using the stable UART since Linux
> 4.16. Drop the legacy compatible strings and related clock code.
>
> Signed-off-by: Yu Tu <yu.tu@...ogic.com>
I have just realized that this cannot be dropped until my series "ARM:
dts: meson: fix UART device-tree schema validation" [0] is merged

[...]
> -/* Legacy bindings, should be removed when no more used */
> -OF_EARLYCON_DECLARE(meson, "amlogic,meson-uart",
> -                   meson_serial_early_console_setup);
This part is still needed as long as above series is not merged yet.
If we remove this then earlycon will stop working on the 32-bit SoCs
unless [0] is merged.

All other code below - except the of_device_id entry - can still be
removed since meson8.dtsi and meson8b.dtsi are using the non-legacy
clocks already.

Sorry for only noticing this now.


Best regards,
Martin


[0] https://patchwork.kernel.org/project/linux-amlogic/cover/20211227180026.4068352-1-martin.blumenstingl@googlemail.com/