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Subject: Re: [PATCH 3/3] arm64: dts: meson: add support for the ODROID-N2+
From:   Neil Armstrong <narmstrong@baylibre.com>
To:     Christian Hewitt <christianshewitt@gmail.com>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Kevin Hilman <khilman@baylibre.com>,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org
Cc:     Dongjin Kim <tobetter@hardkernel.com>
References: <20200719141034.8403-1-christianshewitt@gmail.com>
 <20200719141034.8403-4-christianshewitt@gmail.com>
 <90da2697-9dcc-1d75-eded-bf4bdc4b594b@baylibre.com>
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Organization: Baylibre
Message-ID: <fc679db1-be92-c384-0fe2-3b06c920ea75@baylibre.com>
Date:   Tue, 21 Jul 2020 10:19:16 +0200
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Sender: linux-kernel-owner@vger.kernel.org
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On 21/07/2020 10:10, Neil Armstrong wrote:
> On 19/07/2020 16:10, Christian Hewitt wrote:
>> HardKernel ODROID-N2+ uses an Amlogic S922X rev. C chip capable of higher
>> clock speeds than the original ODROID-N2. Hardkernel supports the big cpu
>> cluster at 2.4GHz and the little cpu cluster at 2.0GHz. Opp points and
>> regulator changess are from the HardKernel Linux kernel sources.
>>
>> Suggested-by: Dongjin Kim <tobetter@hardkernel.com>
>> Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
>> ---
>>  arch/arm64/boot/dts/amlogic/Makefile          |  1 +
>>  .../dts/amlogic/meson-g12b-odroid-n2-plus.dts | 53 +++++++++++++++++++
>>  2 files changed, 54 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
>>
>> diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
>> index 5cac4d1d487d..6dc508b80133 100644
>> --- a/arch/arm64/boot/dts/amlogic/Makefile
>> +++ b/arch/arm64/boot/dts/amlogic/Makefile
>> @@ -8,6 +8,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-g12b-gtking-pro.dtb
>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12b-a311d-khadas-vim3.dtb
>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12b-s922x-khadas-vim3.dtb
>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12b-odroid-n2.dtb
>> +dtb-$(CONFIG_ARCH_MESON) += meson-g12b-odroid-n2-plus.dtb
>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12b-ugoos-am6.dtb
>>  dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-kii-pro.dtb
>>  dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nanopi-k2.dtb
>> 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
>> new file mode 100644
>> index 000000000000..99e96be509f8
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2-plus.dts
>> @@ -0,0 +1,53 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (c) 2019 BayLibre, SAS
>> + * Author: Neil Armstrong <narmstrong@baylibre.com>
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "meson-g12b-odroid-n2.dtsi"
>> +
>> +/ {
>> +	compatible = "hardkernel,odroid-n2-plus", "amlogic,s922x", "amlogic,g12b";
>> +	model = "Hardkernel ODROID-N2+";
>> +
>> +	vddcpu_a: regulator-vddcpu-a {
>> +		regulator-min-microvolt = <680000>;
>> +		regulator-max-microvolt = <1040000>;
>> +
>> +		pwms = <&pwm_ab 0 1500 0>;
>> +	};
>> +
>> +	vddcpu_b: regulator-vddcpu-b {
>> +		regulator-min-microvolt = <680000>;
>> +		regulator-max-microvolt = <1040000>;
>> +
>> +		pwms = <&pwm_AO_cd 1 1500 0>;
>> +	};
>> +
>> +	cpu_opp_table_0: opp-table-0 {
>> +		opp-1908000000 {
>> +			opp-hz = /bits/ 64 <1908000000>;
>> +			opp-microvolt = <1030000>;
>> +		};
>> +
>> +		opp-2016000000 {
>> +			opp-hz = /bits/ 64 <2016000000>;
>> +			opp-microvolt = <1040000>;
>> +		};
>> +	};
>> +
>> +	cpub_opp_table_1: opp-table-1 {
>> +		opp-2304000000 {
>> +			opp-hz = /bits/ 64 <2304000000>;
>> +			opp-microvolt = <1030000>;
>> +		};
>> +
>> +		opp-2400000000 {
>> +			opp-hz = /bits/ 64 <2400000000>;
>> +			opp-microvolt = <1040000>;
>> +		};
>> +	};
>> +};
>> +
>>
> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
> 

Wait no, it should be:

/ {
	compatible = "hardkernel,odroid-n2-plus", "amlogic,s922x", "amlogic,g12b";
	model = "Hardkernel ODROID-N2+";
};

&vddcpu_a {
	regulator-min-microvolt = <680000>;
	regulator-max-microvolt = <1040000>;

	pwms = <&pwm_ab 0 1500 0>;
};

&vddcpu_b {
	regulator-min-microvolt = <680000>;
	regulator-max-microvolt = <1040000>;

	pwms = <&pwm_AO_cd 1 1500 0>;
};

&cpu_opp_table_0 {
		opp-1908000000 {
		opp-hz = /bits/ 64 <1908000000>;
		opp-microvolt = <1030000>;
	};

	opp-2016000000 {
		opp-hz = /bits/ 64 <2016000000>;
		opp-microvolt = <1040000>;
	};
};

&cpub_opp_table_1 {
	opp-2304000000 {
		opp-hz = /bits/ 64 <2304000000>;
		opp-microvolt = <1030000>;
	};

	opp-2400000000 {
		opp-hz = /bits/ 64 <2400000000>;
		opp-microvolt = <1040000>;
	};
};

Neil