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Date:   Tue, 19 Oct 2021 17:41:49 +0200
From:   Andrew Lunn <andrew@lunn.ch>
To:     =?iso-8859-1?Q?K=F6ry?= Maincent <kory.maincent@bootlin.com>
Cc:     Geert Uytterhoeven <geert@linux-m68k.org>,
        netdev <netdev@vger.kernel.org>,
        Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Sergey Shtylyov <s.shtylyov@omp.ru>,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
        Biju Das <biju.das.jz@bp.renesas.com>,
        Sergei Shtylyov <sergei.shtylyov@gmail.com>,
        Adam Ford <aford173@gmail.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
        Yang Yingliang <yangyingliang@huawei.com>
Subject: Re: [PATCH] net: renesas: Fix rgmii-id delays
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> When people update the kernel version don't they update also the devicetree?

DT is ABI. Driver writers should not break old blobs running on new
kernels. Often the DT blob is updated with the kernel, but it is not
required. It could be stored in a hard to reach place, shared with
u-boot etc.

	Andrew