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Mon, 04 Jan 2021 06:53:03 -0800 (PST) To: Martin Kepplinger , robh@kernel.org, shawnguo@kernel.org, festevam@gmail.com, catalin.marinas@arm.com, will@kernel.org, cdleonard@gmail.com Cc: kernel@pengutronix.de, linux-imx@nxp.com, kernel@puri.sm, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Leonard Crestez References: <20201210100906.18205-1-martin.kepplinger@puri.sm> <20201210100906.18205-2-martin.kepplinger@puri.sm> From: Georgi Djakov Subject: Re: [PATCH v3 1/6] arm64: dts: imx8mq: Add NOC node Message-ID: <5af9ae66-039c-2e94-6b69-d5a6b0f2a0b3@linaro.org> Date: Mon, 4 Jan 2021 16:53:03 +0200 MIME-Version: 1.0 In-Reply-To: <20201210100906.18205-2-martin.kepplinger@puri.sm> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/10/20 12:09, Martin Kepplinger wrote: > From: Leonard Crestez > > Add initial support for dynamic frequency scaling of the main NOC > on imx8mq. > > Make DDRC the parent of the NOC (using passive governor) so that the > main NOC is automatically scaled together with DDRC by default. > > Support for proactive scaling via interconnect will come on top. > > Signed-off-by: Leonard Crestez > Signed-off-by: Martin Kepplinger Acked-by: Georgi Djakov > --- > arch/arm64/boot/dts/freescale/imx8mq.dtsi | 22 ++++++++++++++++++++++ > 1 file changed, 22 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi > index a841a023e8e0..9c9d68a14e69 100644 > --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi > +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi > @@ -1158,6 +1158,28 @@ > }; > }; > > + noc: interconnect@32700000 { > + compatible = "fsl,imx8mq-noc", "fsl,imx8m-noc"; > + reg = <0x32700000 0x100000>; > + clocks = <&clk IMX8MQ_CLK_NOC>; > + fsl,ddrc = <&ddrc>; > + operating-points-v2 = <&noc_opp_table>; > + > + noc_opp_table: opp-table { > + compatible = "operating-points-v2"; > + > + opp-133M { > + opp-hz = /bits/ 64 <133333333>; > + }; > + opp-400M { > + opp-hz = /bits/ 64 <400000000>; > + }; > + opp-800M { > + opp-hz = /bits/ 64 <800000000>; > + }; > + }; > + }; > + > bus@32c00000 { /* AIPS4 */ > compatible = "fsl,aips-bus", "simple-bus"; > reg = <0x32c00000 0x400000>; >