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Mon, 08 Mar 2021 11:59:37 -0800 (PST) Received: from robh.at.kernel.org ([64.188.179.253]) by smtp.gmail.com with ESMTPSA id d3sm6726124ilo.32.2021.03.08.11.59.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Mar 2021 11:59:36 -0800 (PST) Received: (nullmailer pid 2867128 invoked by uid 1000); Mon, 08 Mar 2021 19:59:34 -0000 Date: Mon, 8 Mar 2021 12:59:34 -0700 From: Rob Herring To: Steen Hegelund Cc: Philipp Zabel , Andrew Lunn , Microchip Linux Driver Support , Alexandre Belloni , Gregory Clement , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: Re: [PATCH v7 3/3] arm64: dts: reset: add microchip sparx5 switch reset driver Message-ID: <20210308195934.GA2855503@robh.at.kernel.org> References: <20210303081158.684532-1-steen.hegelund@microchip.com> <20210303081158.684532-4-steen.hegelund@microchip.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210303081158.684532-4-steen.hegelund@microchip.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210308_195938_880647_CA2F24F6 X-CRM114-Status: GOOD ( 16.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Mar 03, 2021 at 09:11:58AM +0100, Steen Hegelund wrote: > This provides reset driver support for the Microchip Sparx5 PCB134 and > PCB135 reference boards. This still looks like an incompatible change with no explanation. What happens on an old kernel that expects "microchip,sparx5-chip-reset" and doesn't understand "microchip,sparx5-switch-reset"? > > Signed-off-by: Steen Hegelund > --- > arch/arm64/boot/dts/microchip/sparx5.dtsi | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/microchip/sparx5.dtsi b/arch/arm64/boot/dts/microchip/sparx5.dtsi > index 380281f312d8..dc3ada5cf9fc 100644 > --- a/arch/arm64/boot/dts/microchip/sparx5.dtsi > +++ b/arch/arm64/boot/dts/microchip/sparx5.dtsi > @@ -132,9 +132,12 @@ mux: mux-controller { > }; > }; > > - reset@611010008 { > - compatible = "microchip,sparx5-chip-reset"; > + reset: reset-controller@611010008 { > + compatible = "microchip,sparx5-switch-reset"; > reg = <0x6 0x11010008 0x4>; > + reg-names = "gcb"; > + #reset-cells = <1>; > + cpu-syscon = <&cpu_ctrl>; > }; > > uart0: serial@600100000 { > -- > 2.30.1 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel