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Thu, 22 Feb 2024 01:40:45 -0800 (PST) References: <20240222082523.1812-1-greena88@gmail.com> User-agent: mu4e 1.10.8; emacs 29.1 From: Jerome Brunet To: Adam Green Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] arm64: dts: meson-g12b-odroid-n2*: Add support for overclocking Hardkernel ODROID-N2 boards. Date: Thu, 22 Feb 2024 10:37:28 +0100 In-reply-to: <20240222082523.1812-1-greena88@gmail.com> Message-ID: <1j8r3cet0i.fsf@starbuckisacylon.baylibre.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Thu 22 Feb 2024 at 08:25, Adam Green wrote: > Hardkernel actively supports overclocking these boards in their own > documentation. (https://wiki.odroid.com/odroid-n2/hardware/overclocking) > > This aligns the SoC opps with those in the board vendors bsp source. Patch title is too long - checkpatch.pl should have given a you warning for this. Not sure it is wise support overclocking directly in mainline, not by default at least. Maybe as an overlay ? even this I'm not too sure. > > Signed-off-by: Adam Green > --- > .../dts/amlogic/meson-g12b-odroid-n2-plus.dts | 25 +++++++++++++++++++ > .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 17 +++++++++++++ > .../dts/amlogic/meson-g12b-odroid-n2l.dts | 25 +++++++++++++++++++ > 3 files changed, 67 insertions(+) > > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts > index ce1198ad34e4..1731d542a00c 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts > @@ -15,6 +15,31 @@ / { > model = "Hardkernel ODROID-N2Plus"; > }; > > +&cpu_opp_table_0 { > + opp-1908000000 { > + opp-hz = /bits/ 64 <1908000000>; > + opp-microvolt = <1030000>; > + }; > + opp-2016000000 { > + opp-hz = /bits/ 64 <2016000000>; > + opp-microvolt = <1040000>; > + turbo-mode; > + }; > +}; > + > +&cpub_opp_table_1 { > + opp-2304000000 { > + opp-hz = /bits/ 64 <2304000000>; > + opp-microvolt = <1030000>; > + turbo-mode; > + }; > + opp-2400000000 { > + opp-hz = /bits/ 64 <2400000000>; > + opp-microvolt = <1040000>; > + turbo-mode; > + }; > +}; > + > &vddcpu_a { > regulator-min-microvolt = <680000>; > regulator-max-microvolt = <1040000>; > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > index a198a91259ec..0c71e8bc0124 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts > @@ -13,3 +13,20 @@ / { > compatible = "hardkernel,odroid-n2", "amlogic,s922x", "amlogic,g12b"; > model = "Hardkernel ODROID-N2"; > }; > + > +&cpu_opp_table_0 { > + opp-1992000000 { > + turbo-mode; > + }; > +}; > + > +&cpub_opp_table_1 { > + opp-1908000000 { > + turbo-mode; > + }; > + opp-2004000000 { > + opp-hz = /bits/ 64 <2004000000>; > + opp-microvolt = <1022000>; > + turbo-mode; > + }; > +}; > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts > index e26f3e3258e1..b16a69d0cad6 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2l.dts > @@ -97,6 +97,31 @@ codec { > }; > }; > > +&cpu_opp_table_0 { > + opp-1908000000 { > + opp-hz = /bits/ 64 <1908000000>; > + opp-microvolt = <1030000>; > + }; > + opp-2016000000 { > + opp-hz = /bits/ 64 <2016000000>; > + opp-microvolt = <1040000>; > + turbo-mode; > + }; > +}; > + > +&cpub_opp_table_1 { > + opp-2304000000 { > + opp-hz = /bits/ 64 <2304000000>; > + opp-microvolt = <1030000>; > + turbo-mode; > + }; > + opp-2400000000 { > + opp-hz = /bits/ 64 <2400000000>; > + opp-microvolt = <1040000>; > + turbo-mode; > + }; > +}; > + > ð_phy { > status = "disabled"; > }; -- Jerome