linux-kernel - Re: [PATCH v5] i2c: imx-lpi2c: return -EINVAL when i2c peripheral clk doesn't work

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Message-ID: <ZNorBff6bK0xIEJC@shikoro>
Date:   Mon, 14 Aug 2023 15:24:21 +0200
From:   Wolfram Sang <wsa@...nel.org>
To:     carlos.song@....com
Cc:     andi.shyti@...nel.org, aisheng.dong@....com, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        xiaoning.wang@....com, haibo.chen@....com, linux-imx@....com,
        linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] i2c: imx-lpi2c: return -EINVAL when i2c peripheral
 clk doesn't work

On Wed, Jul 26, 2023 at 05:22:38PM +0800, carlos.song@....com wrote:
> From: Carlos Song <carlos.song@....com>
> 
> On MX8X platforms, the default clock rate is 0 if without explicit
> clock setting in dts nodes. I2c can't work when i2c peripheral clk
> rate is 0.
> 
> Add a i2c peripheral clk rate check before configuring the clock
> register. When i2c peripheral clk rate is 0 and directly return
> -EINVAL.
> 
> Signed-off-by: Carlos Song <carlos.song@....com>

Applied to for-current, thanks!


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