[linux-sunxi] [PATCH 12/12] arm64: dts: allwinner: orange-pi-3: Enable WiFi

[Ondřej Jirman]

On Sun, Apr 07, 2019 at 05:31:52PM +0200, Clément Péron wrote:
> Hi,
> 
> On Sat, 6 Apr 2019 at 01:45, megous via linux-sunxi
> <linux-sunxi at googlegroups.com> wrote:
> >
> > From: Ondrej Jirman <megous at megous.com>
> >
> > Orange Pi 3 has AP6256 WiFi/BT module. WiFi part of the module is
> > called bcm43356 and can be used with the brcmfmac driver. The module
> > is powered by the two always on regulators (not AXP805).
> >
> > WiFi uses a PG port with 1.8V voltage level signals. SoC needs to be
> > configured so that it sets up an 1.8V input bias on this port. This is
> > done by the pio driver by reading the vcc-pg-supply voltage.
> >
> > You'll need a fw_bcm43456c5_ag.bin firmware file and nvram.txt
> > configuration that can be found in the Xulongs's repository for H6:
> >
> > https://github.com/orangepi-xunlong/OrangePiH6_external/tree/master/ap6256
> >
> > Mainline brcmfmac driver expects the firmware and nvram at the
> > following paths relative to the firmware directory:
> >
> >   brcm/brcmfmac43456-sdio.bin
> >   brcm/brcmfmac43456-sdio.txt
> >
> > Signed-off-by: Ondrej Jirman <megous at megous.com>
> > ---
> >  .../dts/allwinner/sun50i-h6-orangepi-3.dts    | 48 +++++++++++++++++++
> >  1 file changed, 48 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> > index 5270142527f5..6a201829bb62 100644
> > --- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
> > @@ -66,6 +66,26 @@
> >                 regulator-always-on;
> >         };
> >
> > +       reg_vcc33_wifi: vcc33-wifi {
> > +               /* Always on 3.3V regulator for WiFi and BT */
> > +               compatible = "regulator-fixed";
> > +               regulator-name = "vcc33-wifi";
> > +               regulator-min-microvolt = <3300000>;
> > +               regulator-max-microvolt = <3300000>;
> > +               regulator-always-on;
> > +                vin-supply = <&reg_vcc5v>;
> > +       };
> > +
> > +       reg_vcc_wifi_io: vcc-wifi-io {
> > +               /* Always on 1.8V/300mA regulator for WiFi and BT IO */
> > +               compatible = "regulator-fixed";
> > +               regulator-name = "vcc-wifi-io";
> > +               regulator-min-microvolt = <1800000>;
> > +               regulator-max-microvolt = <1800000>;
> > +               regulator-always-on;
> > +                vin-supply = <&reg_vcc33_wifi>;
> > +       };
> > +
> >         /*
> >          * The board uses 2.5V RGMII signalling. Power sequence
> >          * to enable the phy is to enable GMAC-2V5 and GMAC-3V3 (aldo2)
> > @@ -86,6 +106,14 @@
> >                   */
> >                  vin-supply = <&reg_aldo2>; /* GMAC-3V3 */
> >          };
> > +
> > +       wifi_pwrseq: wifi_pwrseq {
> > +               compatible = "mmc-pwrseq-simple";
> > +               clocks = <&rtc 1>;
> 
> Maybe I missed something, but the RTC in H6 is not yet available :
> https://lkml.org/lkml/2018/10/31/822

You're right. I'm using an out-of-tree patch for that and didn't notice the
dependency. I guess, WiFi DTS patch can be ignored for now.

thanks,
	o.

> Regards,
> Clement
> 
> > +               clock-names = "ext_clock";
> > +               reset-gpios = <&r_pio 1 3 GPIO_ACTIVE_LOW>; /* PM3 */
> > +               post-power-on-delay-ms = <200>;
> > +       };
> >  };
> >
> >  &cpu0 {
> > @@ -146,6 +174,25 @@
> >         status = "okay";
> >  };
> >
> > +&mmc1 {
> > +       pinctrl-names = "default";
> > +       pinctrl-0 = <&mmc1_pins>;
> > +       vmmc-supply = <&reg_vcc33_wifi>;
> > +       vqmmc-supply = <&reg_vcc_wifi_io>;
> > +       mmc-pwrseq = <&wifi_pwrseq>;
> > +       bus-width = <4>;
> > +       non-removable;
> > +       status = "okay";
> > +
> > +       brcm: sdio-wifi at 1 {
> > +               reg = <1>;
> > +               compatible = "brcm,bcm4329-fmac";
> > +               interrupt-parent = <&r_pio>;
> > +               interrupts = <1 0 IRQ_TYPE_LEVEL_LOW>; /* PM0 */
> > +               interrupt-names = "host-wake";
> > +       };
> > +};
> > +
> >  &ohci0 {
> >         status = "okay";
> >  };
> > @@ -157,6 +204,7 @@
> >  &pio {
> >         vcc-pc-supply = <&reg_bldo2>;
> >         vcc-pd-supply = <&reg_cldo1>;
> > +       vcc-pg-supply = <&reg_vcc_wifi_io>;
> >  };
> >
> >  &r_i2c {
> > --
> > 2.21.0
> >
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