linux-kernel - Re: [linux-sunxi] [PATCH 2/3] arm64: allwinner: a64: enable AXP803 for Banana Pi M64

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Message-ID: <CAGb2v67EGOacZRktqh6SrO1B5jCt8w41EU11U+PUG6sbXFoDww@mail.gmail.com>
Date:   Fri, 21 Jul 2017 15:49:55 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Icenowy Zheng <icenowy@...c.io>
Cc:     Chen-Yu Tsai <wens@...e.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] [PATCH 2/3] arm64: allwinner: a64: enable AXP803
 for Banana Pi M64

On Fri, Jul 21, 2017 at 3:44 PM, Icenowy Zheng <icenowy@...c.io> wrote:
>
>
> 于 2017年7月21日 GMT+08:00 下午3:42:07, Chen-Yu Tsai <wens@...e.org> 写到:
>>On Fri, Jul 21, 2017 at 7:07 AM, Icenowy Zheng <icenowy@...c.io> wrote:
>>> Banana Pi M64 board uses an AXP803 PMIC.
>>>
>>> Enable the PMIC and its regulators.
>>>
>>> As we have now proper regulators support, missing or dummy regulators
>>> are changed to the correct ones.
>>>
>>> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>>> ---
>>>  .../boot/dts/allwinner/sun50i-a64-bananapi-m64.dts | 116
>>+++++++++++++++++++--
>>>  1 file changed, 106 insertions(+), 10 deletions(-)
>>>
>>> diff --git
>>a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
>>b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
>>> index 829922d077fb..51d67c0a0edf 100644
>>> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
>>> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-bananapi-m64.dts
>>> @@ -58,13 +58,6 @@
>>>         chosen {
>>>                 stdout-path = "serial0:115200n8";
>>>         };
>>> -
>>> -       reg_vcc3v3: vcc3v3 {
>>> -               compatible = "regulator-fixed";
>>> -               regulator-name = "vcc3v3";
>>> -               regulator-min-microvolt = <3300000>;
>>> -               regulator-max-microvolt = <3300000>;
>>> -       };
>>>  };
>>>
>>>  &ehci1 {
>>> @@ -76,6 +69,7 @@
>>>         pinctrl-0 = <&rgmii_pins>;
>>>         phy-mode = "rgmii";
>>>         phy-handle = <&ext_rgmii_phy>;
>>> +       phy-supply = <&reg_dc1sw>;
>>>         status = "okay";
>>>  };
>>>
>>> @@ -99,7 +93,7 @@
>>>  &mmc0 {
>>>         pinctrl-names = "default";
>>>         pinctrl-0 = <&mmc0_pins>;
>>> -       vmmc-supply = <&reg_vcc3v3>;
>>> +       vmmc-supply = <&reg_dcdc1>;
>>>         cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>;
>>>         cd-inverted;
>>>         disable-wp;
>>> @@ -110,7 +104,8 @@
>>>  &mmc1 {
>>>         pinctrl-names = "default";
>>>         pinctrl-0 = <&mmc1_pins>;
>>> -       vmmc-supply = <&reg_vcc3v3>;
>>> +       vmmc-supply = <&reg_dldo2>;
>>> +       vqmmc-supply = <&reg_dldo4>;
>>>         bus-width = <4>;
>>>         non-removable;
>>>         status = "okay";
>>> @@ -119,7 +114,7 @@
>>>  &mmc2 {
>>>         pinctrl-names = "default";
>>>         pinctrl-0 = <&mmc2_pins>;
>>> -       vmmc-supply = <&reg_vcc3v3>;
>>> +       vmmc-supply = <&reg_dcdc1>;
>>>         bus-width = <8>;
>>>         non-removable;
>>>         cap-mmc-hw-reset;
>>> @@ -130,6 +125,107 @@
>>>         status = "okay";
>>>  };
>>>
>>> +&r_rsb {
>>> +       status = "okay";
>>> +
>>> +       axp803: pmic@3a3 {
>>> +               compatible = "x-powers,axp803";
>>> +               reg = <0x3a3>;
>>> +               interrupt-parent = <&r_intc>;
>>> +               interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
>>> +       };
>>> +};
>>> +
>>> +#include "axp803.dtsi"
>>> +
>>> +&reg_aldo2 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <1800000>;
>>> +       regulator-max-microvolt = <3300000>;
>>> +       regulator-name = "vcc-pl";
>>> +};
>>> +
>>> +&reg_aldo3 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <3000000>;
>>> +       regulator-max-microvolt = <3000000>;
>>> +       regulator-name = "vcc-pll-avcc";
>>> +};
>>> +
>>> +&reg_dc1sw {
>>> +       regulator-name = "vcc-phy";
>>> +};
>>> +
>>> +&reg_dcdc1 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <3300000>;
>>> +       regulator-max-microvolt = <3300000>;
>>> +       regulator-name = "vcc-3v3";
>>> +};
>>> +
>>> +&reg_dcdc2 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <1000000>;
>>
>>The datasheet says the minimum voltage is 1.04V.
>
> A64 datasheet?

Yes. V1.1.

>
> Maybe I need to fix all A64 AXP patches.
>
>>
>>> +       regulator-max-microvolt = <1300000>;
>>> +       regulator-name = "vdd-cpux";
>>> +};
>>> +
>>> +/* DCDC3 is polyphased with DCDC2 */
>>> +
>>> +&reg_dcdc5 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <1500000>;
>>> +       regulator-max-microvolt = <1500000>;
>>> +       regulator-name = "vcc-dram";
>>> +};
>>> +
>>> +&reg_dcdc6 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <1100000>;
>>> +       regulator-max-microvolt = <1100000>;
>>> +       regulator-name = "vdd-sys";
>>> +};
>>> +
>>> +&reg_dldo1 {
>>> +       regulator-min-microvolt = <3300000>;
>>> +       regulator-max-microvolt = <3300000>;
>>> +       regulator-name = "vcc-hdmi-dsi";
>>> +};
>>> +
>>> +&reg_dldo2 {
>>> +       regulator-min-microvolt = <3300000>;
>>> +       regulator-max-microvolt = <3300000>;
>>> +       regulator-name = "vcc-wifi";
>>> +};
>>> +
>>> +&reg_dldo4 {
>>> +       regulator-min-microvolt = <1800000>;
>>> +       regulator-max-microvolt = <3300000>;
>>> +       regulator-name = "vcc-wifi-io";
>>> +};
>>> +
>>> +&reg_eldo1 {
>>> +       regulator-min-microvolt = <1800000>;
>>> +       regulator-max-microvolt = <1800000>;
>>> +       regulator-name = "cpvdd";
>>> +};
>>> +
>>
>>It looks like you are missing a few regulators? I assume you
>>would add them once the peripherals that use them are added?
>
> Yes.
>
> I mainly dropped CSI part, as it seems so complicate.

HSIC is also missing. I know the board doesn't use the feature,
but the regulator is hooked up. It would be better to set the
name and constraints.

ChenYu

>
>>
>>Otherwise this patch looks good.
>>
>>ChenYu
>>
>>> +/*
>>> + * The A64 chip cannot work without this regulator off, although
>>> + * it seems to be only driving the AR100 core.
>>> + * Maybe we don't still know well about CPUs domain.
>>> + */
>>> +&reg_fldo2 {
>>> +       regulator-always-on;
>>> +       regulator-min-microvolt = <1100000>;
>>> +       regulator-max-microvolt = <1100000>;
>>> +       regulator-name = "vdd-cpus";
>>> +};
>>> +
>>> +&reg_rtc_ldo {
>>> +       regulator-name = "vcc-rtc";
>>> +};
>>> +
>>>  &uart0 {
>>>         pinctrl-names = "default";
>>>         pinctrl-0 = <&uart0_pins_a>;
>>> --
>>> 2.13.0
>>>
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