linux-kernel - Re: [PATCH V3 0/7] i2c-imx-lpi2c: add IPG clock

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Message-ID: <20220903033851.GE1728671@dragon>
Date:   Sat, 3 Sep 2022 11:38:51 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc:     wsa@...nel.org, aisheng.dong@....com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        linux-i2c@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        xiaoning.wang@....com, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH V3 0/7] i2c-imx-lpi2c: add IPG clock

On Tue, Aug 23, 2022 at 11:02:08AM +0800, Peng Fan (OSS) wrote:
> From: Peng Fan <peng.fan@....com>
> 
> V3:
>  Add R-b
>  Correct clk_bulk_disable to clk_bulk_disable_unprepare in patch 7
> 
> V2:
>  use clk bulk API in driver to support backward compatibility.
>  Include a new patch, patch 1.
> 
> The i.MX LPI2C needs PER and IPG clock, not just PER or IPG clock.
> The current driver/dts/bindings use one CLK. Although it works with
> upstream kernel, but it not match the hardware design. If IPG clock is
> disabled, the LPI2C will not work.
> 
> There are changes made to ARM32 i.MX7ULP dts, ARM64 i.MX8 dts, dt-
> bindings, and the lpi2c driver.
> 
> The driver is updated to use bulk clk API to avoid break backward
> compatibility. But it is hard to avoid dtbs_check pass, because the dts and
> binding update are in separate patches.
> 
> Peng Fan (7):
>   ARM: dts: imx7ulp: update the LPI2C clock-names
>   dt-bindings: i2c: i2c-imx-lpi2c: add ipg clk
>   dt-bindings: i2c: i2c-imx-lpi2c: add dmas property
>   dt-bindings: i2c: i2c-imx-lpi2c: add i.MX93
>   arm64: dts: imx8-ss-dma: add IPG clock for i2c
>   ARM: dts: imx7ulp: Add IPG clock for lpi2c
>   i2c: imx-lpi2c: use bulk clk API

Applied 3 DTS patches, thanks!