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Message-ID: <93da58f8-aca1-2fcf-e45c-e341e1be593b@amlogic.com>
Date: Fri, 31 Dec 2021 18:35:27 +0800
From: Yu Tu <yu.tu@...ogic.com>
To: Martin Blumenstingl <martin.blumenstingl@...glemail.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 3/6] dt-bindings: serial: meson: Support S4 SoC uart.
Also Drop compatible = amlogic,meson-gx-uart.
On 2021/12/31 6:34, Martin Blumenstingl wrote:
> [ EXTERNAL EMAIL ]
>
> Hello,
>
> as Greg already mentioned the $subject line is very long.
>
> On Thu, Dec 30, 2021 at 11:21 AM Yu Tu <yu.tu@...ogic.com> wrote:
>> Deprecated, don't use anymore because compatible = amlogic,meson-gx-uart
>> don't differentiate between GXBB and GXL which have different
>> revisions of the UART IP. So it's split into GXBB and GXL.
> actually it's split into GXBB, GXL and G12A
>
> [...]
>> - - amlogic,meson-gx-uart
>> + - amlogic,meson-gxbb-uart
>> + - amlogic,meson-gxl-uart
>> + - amlogic,meson-g12a-uart
>> + - amlogic,meson-s4-uart
> In addition to Greg's comment I suggest splitting this into two patches:
> - one where the "amlogic,meson-gx-uart" compatible is marked as
> deprecated (Documentation/devicetree/bindings/power/supply/bq27xxx.yaml
> has an example for deprecated entries) and GXBB, GXL and G12A
> compatible strings are added instead
> - another one where the new S4 compatible string is added
>
> The idea here is to have "one logical change per patch".
> Deprecating and replacing "amlogic,meson-gx-uart" is one logical change.
> Adding a new compatible string is another logical change.
> I am hoping that this will also make it easier to find a shorter
> $subject line (which according to the patch submission guide [0]
> should be 70-75 characters: "the summary must be no more than 70-75
> characters")
>
I will split the two patches in the next version.One was deprecating and
replacing "AmLogic, Meson-GX-Uart" and the other added S4 compatible.
>
> Best regards,
> Martin
>
>
> [0] https://www.kernel.org/doc/html/v4.17/process/submitting-patches.html#the-canonical-patch-format
>
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