[linux-sunxi] Re: [PATCH 10/11] arm64: allwinner: a64: enable AXP803 regulators for Pine64
Maxime Ripard
maxime.ripard at free-electrons.com
Wed Apr 5 01:08:57 PDT 2017
On Wed, Apr 05, 2017 at 02:15:43PM +0800, Icenowy Zheng wrote:
>
> 2017年4月5日 14:13于 Maxime Ripard <maxime.ripard at free-electrons.com>写道:
> >
> > On Wed, Apr 05, 2017 at 02:01:44AM +0800, Icenowy Zheng 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 at aosc.io>
> > > ---
> > > .../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 2132d8e6cb3d..7da074f95065 100644
> > > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
> > > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts
> > > @@ -106,6 +106,115 @@
> > > };
> > > };
> > >
> > > +#include "axp803.dtsi"
> > > +
> > > +®_aldo1 {
> > > + regulator-min-microvolt = <2800000>;
> > > + regulator-max-microvolt = <2800000>;
> > > + regulator-name = "vcc-csi";
> > > +};
> > > +
> > > +®_aldo2 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <1800000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "vcc-pl";
> > > +};
> > > +
> > > +®_aldo3 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <2700000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "vcc-pll-avcc";
> > > +};
> > > +
> > > +®_dc1sw {
> > > + regulator-name = "vcc-phy";
> > > +};
> > > +
> > > +®_dcdc1 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <3300000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "vcc-3v3";
> > > +};
> > > +
> > > +®_dcdc2 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <1000000>;
> > > + regulator-max-microvolt = <1300000>;
> > > + regulator-name = "vdd-cpux";
> > > +};
> > > +
> > > +/* DCDC3 is polyphased with DCDC2 */
> > > +
> > > +®_dcdc5 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <1500000>;
> > > + regulator-max-microvolt = <1500000>;
> > > + regulator-name = "vcc-dram";
> > > +};
> > > +
> > > +®_dcdc6 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <1100000>;
> > > + regulator-max-microvolt = <1100000>;
> > > + regulator-name = "vdd-sys";
> > > +};
> > > +
> > > +®_dldo1 {
> > > + regulator-min-microvolt = <3300000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "vcc-hdmi";
> > > +};
> > > +
> > > +®_dldo2 {
> > > + regulator-min-microvolt = <3300000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "vcc-mipi";
> > > +};
> > > +
> > > +®_dldo3 {
> > > + regulator-min-microvolt = <3300000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "avdd-csi";
> > > +};
> > > +
> > > +®_dldo4 {
> > > + regulator-min-microvolt = <3300000>;
> > > + regulator-max-microvolt = <3300000>;
> > > + regulator-name = "vcc-wifi";
> > > +};
> > > +
> > > +®_eldo1 {
> > > + regulator-min-microvolt = <1800000>;
> > > + regulator-max-microvolt = <1800000>;
> > > + regulator-name = "cpvdd";
> > > +};
> > > +
> > > +®_eldo3 {
> > > + regulator-min-microvolt = <1800000>;
> > > + regulator-max-microvolt = <1800000>;
> > > + regulator-name = "vdd-1v8-csi";
> > > +};
> > > +
> > > +®_fldo1 {
> > > + regulator-min-microvolt = <1200000>;
> > > + regulator-max-microvolt = <1200000>;
> > > + regulator-name = "vcc-1v2-hsic";
> > > +};
> > > +
> > > +®_fldo2 {
> > > + regulator-always-on;
> > > + regulator-min-microvolt = <1100000>;
> > > + regulator-max-microvolt = <1100000>;
> > > + regulator-name = "vdd-cpus";
> > > +};
> >
> > Why do you need to always power the AR100 on?
>
> It's for CPUS power domain, not the AR100 processor.
>
> Kill it will lead to instantly system hang.
What are you calling CPUS then?
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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