linux-kernel - Re: [PATCH 1/2] dts: hisilicon: add support for the PMIC found on Hikey 970

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Date:   Mon, 26 Jul 2021 10:40:44 +0800
From:   Wei Xu <xuwei5@...ilicon.com>
To:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
CC:     <linuxarm@...wei.com>, <mauro.chehab@...wei.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, "xuwei (O)" <xuwei5@...wei.com>
Subject: Re: [PATCH 1/2] dts: hisilicon: add support for the PMIC found on
 Hikey 970

Hi Mauro,

On 2021/7/24 16:55, Mauro Carvalho Chehab wrote:
> Add a device tree for the HiSilicon 6421v600 SPMI PMIC, used
> on HiKey970 board.
> 
> As we now have support for it, change the fixed regulators
> used by the SD I/O to use the proper LDO supplies.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> ---
>  .../boot/dts/hisilicon/hi3670-hikey970.dts    | 22 +----
>  .../boot/dts/hisilicon/hikey970-pmic.dtsi     | 86 +++++++++++++++++++
>  2 files changed, 89 insertions(+), 19 deletions(-)
>  create mode 100644 arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi
> 
> diff --git a/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts b/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts
> index d8abf442ee7e..7c32f5fd5cc5 100644
> --- a/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts
> +++ b/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts
> @@ -12,6 +12,7 @@
>  
>  #include "hi3670.dtsi"
>  #include "hikey970-pinctrl.dtsi"
> +#include "hikey970-pmic.dtsi"
>  
>  / {
>  	model = "HiKey970";
> @@ -39,23 +40,6 @@ memory@0 {
>  		reg = <0x0 0x0 0x0 0x0>;
>  	};
>  
> -	sd_1v8: regulator-1v8 {
> -		compatible = "regulator-fixed";
> -		regulator-name = "fixed-1.8V";
> -		regulator-min-microvolt = <1800000>;
> -		regulator-max-microvolt = <1800000>;
> -		regulator-always-on;
> -	};
> -
> -	sd_3v3: regulator-3v3 {
> -		compatible = "regulator-fixed";
> -		regulator-name = "fixed-3.3V";
> -		regulator-min-microvolt = <3300000>;
> -		regulator-max-microvolt = <3300000>;
> -		regulator-boot-on;
> -		regulator-always-on;
> -	};
> -
>  	wlan_en: wlan-en-1-8v {
>  		compatible = "regulator-fixed";
>  		regulator-name = "wlan-en-regulator";
> @@ -402,8 +386,8 @@ &dwmmc1 {
>  	pinctrl-0 = <&sd_pmx_func
>  		     &sd_clk_cfg_func
>  		     &sd_cfg_func>;
> -	vmmc-supply = <&sd_3v3>;
> -	vqmmc-supply = <&sd_1v8>;
> +	vmmc-supply = <&ldo16>;
> +	vqmmc-supply = <&ldo9>;
>  	status = "okay";
>  };
>  
> diff --git a/arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi b/arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi
> new file mode 100644
> index 000000000000..970047f2dabd
> --- /dev/null
> +++ b/arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi
> @@ -0,0 +1,86 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * dts file for Hi6421v600 SPMI PMIC used at the HiKey970 Development Board
> + *
> + * Copyright (C) 2020, Huawei Tech. Co., Ltd.
> + */
> +
> +#include <dt-bindings/spmi/spmi.h>
> +
> +/ {
> +	spmi: spmi@...24000 {
> +		compatible = "hisilicon,kirin970-spmi-controller";
> +		#address-cells = <2>;
> +		#size-cells = <0>;
> +		status = "okay";
> +		reg = <0x0 0xfff24000 0x0 0x1000>;
> +		hisilicon,spmi-channel = <2>;
> +
> +		pmic: pmic@0 {
> +			compatible = "hisilicon,hi6421-spmi";

Should this be "hisilicon,hi6421-pmic" which is already in the binding document "mfd/hi6421.txt"?
Others are OK to me.
Thanks!

Best Regards,
Wei