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From:   Kevin Hilman <khilman@baylibre.com>
To:     Neil Armstrong <narmstrong@baylibre.com>,
        Anand Moon <linux.amoon@gmail.com>
Cc:     Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
        linux-amlogic@lists.infradead.org,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v5 3/3] arm64: dts: meson: Add minimal support for Odroid-N2
In-Reply-To: <f1013078-5964-640e-de7a-4ad8b91ed005@baylibre.com>
References: <20190603091008.2382-1-narmstrong@baylibre.com> <20190603091008.2382-4-narmstrong@baylibre.com> <CANAwSgT964PY6OMkS-hoqBf39Np99-tzfGbpXGdLtxF600eDtQ@mail.gmail.com> <f1013078-5964-640e-de7a-4ad8b91ed005@baylibre.com>
Date:   Wed, 05 Jun 2019 08:27:27 -0700
Message-ID: <7hr288gihs.fsf@baylibre.com>
MIME-Version: 1.0
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Sender: linux-kernel-owner@vger.kernel.org
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Neil Armstrong <narmstrong@baylibre.com> writes:

> On 03/06/2019 14:00, Anand Moon wrote:
>> Hi Niel,
>> 
>> On Mon, 3 Jun 2019 at 14:41, Neil Armstrong <narmstrong@baylibre.com> wrote:
>>>
>>> This patch adds basic support for :
>>> - Amlogic G12B, which is very similar to G12A
>>> - The HardKernel Odroid-N2 based on the S922X SoC
>>>
>>> The Amlogic G12B SoC is very similar with the G12A SoC, sharing
>>> most of the features and architecture, but with these differences :
>>> - The first CPU cluster only has 2xCortex-A53 instead of 4
>>> - G12B has a second cluster of 4xCortex-A73
>>> - Both cluster can achieve 2GHz instead of 1,8GHz for G12A
>>> - CPU Clock architecture is difference, thus needing a different
>>>   compatible to handle this slight difference
>>> - Supports a MIPI CSI input
>>> - Embeds a Mali-G52 instead of a Mali-G31, but integration is the same
>>>
>>> Actual support is done in the same way as for the GXM support, including
>>> the G12A dtsi and redefining the CPU clusters.
>>> Unlike GXM, the first cluster is different, thus needing to remove
>>> the last 2 cpu nodes of the first cluster.
>>>
>>> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
>>> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
>>> ---
>>>  arch/arm64/boot/dts/amlogic/Makefile          |   1 +
>>>  .../boot/dts/amlogic/meson-g12b-odroid-n2.dts | 289 ++++++++++++++++++
>>>  arch/arm64/boot/dts/amlogic/meson-g12b.dtsi   |  82 +++++
>>>  3 files changed, 372 insertions(+)
>>>  create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
>>>  create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12b.dtsi
>>>
>>> diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
>>> index e129c03ced14..07b861fe5fa5 100644
>>> --- a/arch/arm64/boot/dts/amlogic/Makefile
>>> +++ b/arch/arm64/boot/dts/amlogic/Makefile
>>> @@ -3,6 +3,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-axg-s400.dtb
>>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12a-sei510.dtb
>>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12a-u200.dtb
>>>  dtb-$(CONFIG_ARCH_MESON) += meson-g12a-x96-max.dtb
>>> +dtb-$(CONFIG_ARCH_MESON) += meson-g12b-odroid-n2.dtb
>>>  dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nanopi-k2.dtb
>>>  dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nexbox-a95x.dtb
>>>  dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-odroidc2.dtb
>>> diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
>>> new file mode 100644
>>> index 000000000000..161d8f0ff4f3
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dts
>>> @@ -0,0 +1,289 @@
>>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>>> +/*
>>> + * Copyright (c) 2019 BayLibre, SAS
>>> + * Author: Neil Armstrong <narmstrong@baylibre.com>
>>> + */
>>> +
>>> +/dts-v1/;
>>> +
>>> +#include "meson-g12b.dtsi"
>>> +#include <dt-bindings/input/input.h>
>>> +#include <dt-bindings/gpio/meson-g12a-gpio.h>
>>> +
>>> +/ {
>>> +       compatible = "hardkernel,odroid-n2", "amlogic,g12b";
>>> +       model = "Hardkernel ODROID-N2";
>>> +
>>> +       aliases {
>>> +               serial0 = &uart_AO;
>>> +               ethernet0 = &ethmac;
>>> +       };
>>> +
>
> [...]
>
>>> +
>>> +       main_12v: regulator-main_12v {
>>> +               compatible = "regulator-fixed";
>>> +               regulator-name = "12V";
>>> +               regulator-min-microvolt = <12000000>;
>>> +               regulator-max-microvolt = <12000000>;
>>> +               regulator-always-on;
>>> +       };
>>> +
>>> +       vcc_5v: regulator-vcc_5v {
>>> +               compatible = "regulator-fixed";
>>> +               regulator-name = "5V";
>>> +               regulator-min-microvolt = <5000000>;
>>> +               regulator-max-microvolt = <5000000>;
>>> +               regulator-always-on;
>> 
>> As per odroid-n2_rev0.4_20190307 schematic its missing.
>>                   vin-supply =  <&main_12v>;
>> 
>> With this please add my.
>> Tested-by: Anand Moon <linux.amoon@gmail.com>
>
> Good catch, thanks Anand.
>
> @Kevin, should I resend ?

No need, I've fixed it up locally,

Thanks,

Kevin