linux-kernel - Re: [linux-sunxi] [PATCH v6 8/9] arm64: allwinner: a64: enable AXP803 regulators for Pine64

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Message-ID: <BC6EE043-B75F-4D79-B18A-EB2ED65F1D07@aosc.io>
Date:   Fri, 19 May 2017 11:12:30 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     wens@...e.org, Chen-Yu Tsai <wens@...e.org>
CC:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Lee Jones <lee.jones@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [linux-sunxi] [PATCH v6 8/9] arm64: allwinner: a64: enable AXP803 regulators for Pine64



于 2017年5月19日 GMT+08:00 上午11:10:36, Chen-Yu Tsai <wens@...e.org> 写到:
>On Fri, May 19, 2017 at 11:00 AM, Icenowy Zheng <icenowy@...c.io>
>wrote:
>>
>>
>> 于 2017年5月19日 GMT+08:00 上午10:54:21, Chen-Yu Tsai <wens@...e.org> 写到:
>>>Hi,
>>>
>>>On Thu, May 18, 2017 at 3:16 PM, Icenowy Zheng <icenowy@...c.io>
>wrote:
>>>> Add support of AXP803 regulators in the Pine64 device tree, in
>order
>>>to
>>>> enable many future functionalities, e.g. Wi-Fi.
>>>>
>>>> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>>>> ---
>>>> Changes in v6:
>>>> - Rebased on next-20170517.
>>>>
>>>>  .../arm64/boot/dts/allwinner/sun50i-a64-pine64.dts | 109
>>>+++++++++++++++++++++
>>>>  1 file changed, 109 insertions(+)
>>>>
>>>> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
>>>b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
>>>> index 36001884ed33..40921bacb39c 100644
>>>> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
>>>> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
>>>> @@ -118,6 +118,115 @@
>>>>         };
>>>>  };
>>>>
>>>> +#include "axp803.dtsi"
>>>> +
>>>> +&reg_aldo1 {
>>>> +       regulator-min-microvolt = <2800000>;
>>>> +       regulator-max-microvolt = <2800000>;
>>>> +       regulator-name = "vcc-csi";
>>>
>>>"csi-afvdd-dovdd"
>>>
>>>This regulator provides power for the camera module's Auto Focus, if
>>>available,
>>>and Digital i/O parts of the sensor module. Hence the names of the
>>>rails.
>>>
>>>> +};
>>>> +
>>>> +&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 = <2700000>;
>>>> +       regulator-max-microvolt = <3300000>;
>>>> +       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>;
>>>> +       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";
>>>> +};
>>>
>>>This should probably be "vcc-hdmi-dsi".
>>
>> oh yes...
>>
>>>
>>>> +
>>>> +&reg_dldo2 {
>>>> +       regulator-min-microvolt = <3300000>;
>>>> +       regulator-max-microvolt = <3300000>;
>>>> +       regulator-name = "vcc-mipi";
>>>> +};
>>>
>>>On the MIPI-LCD page of the schematics, it says this is connected to
>>>VDD18, so it should be 1.8V.
>>
>> Rename it to "vcc-dsi-1v8"?
>
>The name is OK. I'm just worried about the voltage. We don't want
>users frying their display panel. They probably cost more than the
>board itself.

As we renamed dldo1 to vcc-hdmi-dsi, the name may lead to confusion...

So I suppose to rename it.

>
>For most of these SBCs, they are designed to work with the panels
>they provide. Could you reach out to TL Lim and ask about the voltage
>used? Or maybe dig it out of the FEX files?
>
>Thanks
>ChenYu
>
>>>
>>>> +
>>>> +&reg_dldo3 {
>>>> +       regulator-min-microvolt = <3300000>;
>>>> +       regulator-max-microvolt = <3300000>;
>>>> +       regulator-name = "avdd-csi";
>>>> +};
>>>
>>>2.8V for this one.
>>>
>>
>> Thanks!
>>
>>>ChenYu
>>>
>>>> +
>>>> +&reg_dldo4 {
>>>> +       regulator-min-microvolt = <3300000>;
>>>> +       regulator-max-microvolt = <3300000>;
>>>> +       regulator-name = "vcc-wifi";
>>>> +};
>>>> +
>>>> +&reg_eldo1 {
>>>> +       regulator-min-microvolt = <1800000>;
>>>> +       regulator-max-microvolt = <1800000>;
>>>> +       regulator-name = "cpvdd";
>>>> +};
>>>> +
>>>> +&reg_eldo3 {
>>>> +       regulator-min-microvolt = <1800000>;
>>>> +       regulator-max-microvolt = <1800000>;
>>>> +       regulator-name = "vdd-1v8-csi";
>>>> +};
>>>> +
>>>> +&reg_fldo1 {
>>>> +       regulator-min-microvolt = <1200000>;
>>>> +       regulator-max-microvolt = <1200000>;
>>>> +       regulator-name = "vcc-1v2-hsic";
>>>> +};
>>>> +
>>>> +&reg_fldo2 {
>>>> +       regulator-always-on;
>>>> +       regulator-min-microvolt = <1100000>;
>>>> +       regulator-max-microvolt = <1100000>;
>>>> +       regulator-name = "vdd-cpus";
>>>> +};
>>>> +
>>>> +&reg_rtc_ldo {
>>>> +       regulator-name = "vcc-rtc";
>>>> +};
>>>> +
>>>>  /* On Exp and Euler connectors */
>>>>  &uart0 {
>>>>         pinctrl-names = "default";
>>>> --
>>>> 2.12.2
>>>>
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