linux-kernel - RE: [PATCH 2/2] clk: imx: imx7d: remove clk_set

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Date:   Fri, 1 Nov 2019 01:28:49 +0000
From:   Peng Fan <peng.fan@....com>
To:     Fabio Estevam <festevam@...il.com>
CC:     "sboyd@...nel.org" <sboyd@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        Abel Vesa <abel.vesa@....com>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>,
        Anson Huang <anson.huang@....com>,
        Jacky Bai <ping.bai@....com>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Leonard Crestez <leonard.crestez@....com>
Subject: RE: [PATCH 2/2] clk: imx: imx7d: remove clk_set_parent

> Subject: Re: [PATCH 2/2] clk: imx: imx7d: remove clk_set_parent
> 
> Hi Peng,
> 
> On Thu, Oct 31, 2019 at 7:02 AM Peng Fan <peng.fan@....com> wrote:
> >
> > From: Peng Fan <peng.fan@....com>
> >
> > Since the set parent could be done by assigned-clock-parents in dts,
> > so no need clk_set_parent in driver.
> 
> It looks like this will cause breakage if someone is using an old dtb, right?

Yes.

> 
> We try not to break existing dtbs.

ok. Then there will be lots code in tree for compatibility.

Thanks,
Peng.