linux-kernel - Re: [PATCH v4 6/8] ARM: sunxi: dts: s3/s3l/v3: add DTSI files for S3/S3L/V3 SoCs

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Message-ID: <76C8832D-04C8-4EEE-A0D1-1EE018DF9B94@aosc.io>
Date:   Sat, 20 Jul 2019 17:50:10 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     linux-arm-kernel@...ts.infradead.org,
        Maxime Ripard <maxime.ripard@...tlin.com>
CC:     devicetree@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-sunxi@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, Chen-Yu Tsai <wens@...e.org>,
        Rob Herring <robh+dt@...nel.org>, linux-clk@...r.kernel.org
Subject: Re: [PATCH v4 6/8] ARM: sunxi: dts: s3/s3l/v3: add DTSI files for S3/S3L/V3 SoCs



于 2019年7月20日 GMT+08:00 下午5:48:14, Maxime Ripard <maxime.ripard@...tlin.com> 写到:
>On Sat, Jul 13, 2019 at 11:46:32AM +0800, Icenowy Zheng wrote:
>> The Allwinner S3/S3L/V3 SoCs all share the same die with the V3s SoC,
>> but with more GPIO wired out of the package.
>>
>> Add DTSI files for these SoCs. The DTSI file for V3 just replaces the
>> pinctrl compatible string, and the S3/S3L DTSI files just include the
>V3
>> DTSI file.
>>
>> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>> ---
>> No changes since v2.
>>
>>  arch/arm/boot/dts/sun8i-s3.dtsi  |  6 ++++++
>>  arch/arm/boot/dts/sun8i-s3l.dtsi |  6 ++++++
>>  arch/arm/boot/dts/sun8i-v3.dtsi  | 14 ++++++++++++++
>>  3 files changed, 26 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/sun8i-s3.dtsi
>>  create mode 100644 arch/arm/boot/dts/sun8i-s3l.dtsi
>>  create mode 100644 arch/arm/boot/dts/sun8i-v3.dtsi
>>
>> diff --git a/arch/arm/boot/dts/sun8i-s3.dtsi
>b/arch/arm/boot/dts/sun8i-s3.dtsi
>> new file mode 100644
>> index 000000000000..0f41a25ecb30
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun8i-s3.dtsi
>> @@ -0,0 +1,6 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019 Icenowy Zheng <icenowy@...c.io>
>> + */
>> +
>> +#include "sun8i-v3.dtsi"
>> diff --git a/arch/arm/boot/dts/sun8i-s3l.dtsi
>b/arch/arm/boot/dts/sun8i-s3l.dtsi
>> new file mode 100644
>> index 000000000000..0f41a25ecb30
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun8i-s3l.dtsi
>> @@ -0,0 +1,6 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019 Icenowy Zheng <icenowy@...c.io>
>> + */
>> +
>> +#include "sun8i-v3.dtsi"
>> diff --git a/arch/arm/boot/dts/sun8i-v3.dtsi
>b/arch/arm/boot/dts/sun8i-v3.dtsi
>> new file mode 100644
>> index 000000000000..6ae8645ade50
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/sun8i-v3.dtsi
>> @@ -0,0 +1,14 @@
>> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> +/*
>> + * Copyright (C) 2019 Icenowy Zheng <icenowy@...c.io>
>> + */
>> +
>> +#include "sun8i-v3s.dtsi"
>> +
>> +&ccu {
>> +	compatible = "allwinner,sun8i-v3-ccu";
>> +};
>> +
>> +&pio {
>> +	compatible = "allwinner,sun8i-v3-pinctrl";
>> +};
>
>Is there any difference between the S3, S3L and V3?

DRAM. This might be useful when we introduce DRAM DVFS.

>
>If not, then we don't need all those DTSI, just add the v3

But I agree with this now.

>
>Maxime
>
>--
>Maxime Ripard, Bootlin
>Embedded Linux and Kernel engineering
>https://bootlin.com

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