linux-kernel - Re: [PATCH v3 16/16] arm64: allwinner: A100: add support for Allwinner Perf1 board

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Message-ID: <20200710123617.ebd2ljn7okdrx4ph@gilmour.lan>
Date:   Fri, 10 Jul 2020 14:36:17 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Frank Lee <frank@...winnertech.com>
Cc:     wens@...e.org, robh+dt@...nel.org, tiny.windzz@...il.com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, huangshuosheng@...winnertech.com,
        liyong@...winnertech.com
Subject: Re: [PATCH v3 16/16] arm64: allwinner: A100: add support for
 Allwinner Perf1 board

Hi,

On Wed, Jul 08, 2020 at 04:28:21PM +0800, Frank Lee wrote:
> A100 perf1 is an Allwinner A100-based SBC, with the following features:
> 
> - 1GiB DDR3 DRAM
> - AXP803 PMIC
> - 2 USB 2.0 ports
> - MicroSD slot and on-board eMMC module
> - on-board Nand flash
> - ···
> 
> Adds initial support for it, including UART and PMU.
> 
> Signed-off-by: Frank Lee <frank@...winnertech.com>
> ---
>  arch/arm64/boot/dts/allwinner/Makefile             |   1 +
>  .../dts/allwinner/sun50i-a100-allwinner-perf1.dts  | 180 +++++++++++++++++++++
>  2 files changed, 181 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts
> 
> diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
> index e4d3cd0..ab780db 100644
> --- a/arch/arm64/boot/dts/allwinner/Makefile
> +++ b/arch/arm64/boot/dts/allwinner/Makefile
> @@ -14,6 +14,7 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pinephone-1.1.dtb
>  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-pinetab.dtb
>  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-sopine-baseboard.dtb
>  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a64-teres-i.dtb
> +dtb-$(CONFIG_ARCH_SUNXI) += sun50i-a100-allwinner-perf1.dtb
>  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-bananapi-m2-plus.dtb
>  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-bananapi-m2-plus-v1.2.dtb
>  dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h5-emlid-neutis-n5-devboard.dtb
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts b/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts
> new file mode 100644
> index 0000000..38621bb
> --- /dev/null
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a100-allwinner-perf1.dts
> @@ -0,0 +1,180 @@
> +// SPDX-License-Identifier: (GPL-2.0+ or MIT)
> +/*
> + * Copyright (c) 2020 Frank Lee <frank@...winnertech.com>
> + */
> +
> +/dts-v1/;
> +
> +#include "sun50i-a100.dtsi"
> +
> +/{
> +	model = "Allwinner A100 Perf1";
> +	compatible = "allwinner,a100-perf1", "allwinner,sun50i-a100";
> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +};
> +
> +&pio {
> +	vcc-pb-supply = <&reg_dcdc1>;
> +	vcc-pc-supply = <&reg_eldo1>;
> +	vcc-pd-supply = <&reg_dcdc1>;
> +	vcc-pe-supply = <&reg_dldo2>;
> +	vcc-pf-supply = <&reg_dcdc1>;
> +	vcc-pg-supply = <&reg_dldo1>;
> +	vcc-ph-supply = <&reg_dcdc1>;
> +};

There's something off here. The PC supply is set to eldo1, but

> +&reg_dcdc1 {
> +	regulator-always-on;
> +	regulator-min-microvolt = <3300000>;
> +	regulator-max-microvolt = <3300000>;
> +	regulator-name = "vcc-pc-io-usb-pd-emmc-nand-card";
> +};

But here you say in the name that dldo1 is a PC supply too?

Maxime