linux-kernel - Re: [PATCH v3 1/9] arm64: dts: ls1028a: fix ENETC PTP clock input

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Message-ID: <20201130092030.GA4072@dragon>
Date:   Mon, 30 Nov 2020 17:20:31 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     Michael Walle <michael@...le.cc>
Cc:     linux-clk@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, Li Yang <leoyang.li@....com>,
        "Y . b . Lu" <yangbo.lu@....com>,
        Xiaowei Bao <xiaowei.bao@....com>,
        Ashish Kumar <Ashish.Kumar@....com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: Re: [PATCH v3 1/9] arm64: dts: ls1028a: fix ENETC PTP clock input

On Sun, Nov 08, 2020 at 07:51:05PM +0100, Michael Walle wrote:
> On the LS1028A the ENETC reference clock is connected to 4th HWA output,
> see Figure 7 "Clock subsystem block diagram".
> 
> The PHC may run with a wrong frequency. ptp_qoriq_auto_config() will read
> the clock speed of the clock given in the device tree. It is likely that,
> on the reference board this wasn't noticed because both clocks have the
> same frequency. But this must not be always the case. Fix it.
> 
> Fixes: 49401003e260 ("arm64: dts: fsl: ls1028a: add ENETC 1588 timer node")
> Signed-off-by: Michael Walle <michael@...le.cc>

Applied, thanks.