Thread (20 messages) 20 messages, 4 authors, 2022-08-16

RE: [PATCH 0/6] i2c-imx-lpi2c: add IPG clock

From: Peng Fan <peng.fan@nxp.com>
Date: 2022-08-15 00:53:08
Also in: linux-devicetree, linux-i2c, lkml

Hi Krzysztof,
Subject: Re: [PATCH 0/6] i2c-imx-lpi2c: add IPG clock

On 12/08/2022 07:34, Peng Fan (OSS) wrote:
quoted
From: Peng Fan <peng.fan@nxp.com>

The i.MX LPI2C needs PER and IPG clock, not just PER or IPG clock.
This patch is to enable both PER and IPG clock for imx-i2c-lpi2c.
This patchset breaks the ABI and is not bisectable. The justification is very
limited (one sentence), so not really enough.
ARM32 i.MX7ULP and ARM64 i.MX8QXP/i.MX8ULP all need to use two
clocks, PER and IPG. But current dt-bindings and dts, use one clock.

This patchset includes dts changes patch 4 and patch 5.
Patch 6 is to update driver use two clocks.

I think the patch order in this patchset would not break git bisect, it
just break ABI. But I not find good way how could not break ABI,
because only use one clock is wrong whether in dt-bindings or dtbs.

Should I use a fixes tag to dt-bindings, then break ABI is allowed?

Thanks,
Peng.
Best regards,
Krzysztof
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