[PATCH] arm64: dts: meson-gxl: add support for phicomm n1

[yangxuan8282@gmail.com (He Yangxuan)]

On Sun, Oct 28, 2018 at 12:32:14PM +0100, Martin Blumenstingl wrote:
> Hi,
> 
> many thanks for your patch!
> 
> On Sat, Oct 13, 2018 at 11:45 AM <yangxuan8282@gmail.com> wrote:
> >
> > From: He Yangxuan <yangxuan8282@gmail.com>
> >
> > This patch adds support for the Phicomm N1. This device based on P230 reference design.
> > The phy is RTL8211F, need to disable Energy Efficient Ethernet (EEE) to make it stable.
> > And this box doesn't have cvbs, so disable related section in device tree.
> do you have any hint how to connect the serial console on the PCB?
I did not connect to serial my self, but other user say it's possible to connect it, details here: http://www.right.com.cn/forum/thread-324996-1-1.html 
> > Signed-off-by: He Yangxuan <yangxuan8282@gmail.com>
> > ---
> >  arch/arm64/boot/dts/amlogic/Makefile               |  1 +
> >  .../dts/amlogic/meson-gxl-s905d-phicomm-n1.dts     | 32 ++++++++++++++++++++++
> >  2 files changed, 33 insertions(+)
> >  create mode 100644 arch/arm64/boot/dts/amlogic/meson-gxl-s905d-phicomm-n1.dts
> >
> > diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
> > index a97c0e2d7..ebd96da2c 100644
> > --- a/arch/arm64/boot/dts/amlogic/Makefile
> > +++ b/arch/arm64/boot/dts/amlogic/Makefile
> > @@ -17,6 +17,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-nexbox-a95x.dtb
> >  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-p212.dtb
> >  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p230.dtb
> >  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-p231.dtb
> > +dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905d-phicomm-n1.dtb
> >  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s805x-p241.dtb
> >  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-p281.dtb
> >  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905w-tx3-mini.dtb
> > diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-phicomm-n1.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-phicomm-n1.dts
> > new file mode 100644
> > index 000000000..1daf58df0
> > --- /dev/null
> > +++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905d-phicomm-n1.dts
> > @@ -0,0 +1,32 @@
> > +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> > +/*
> > + * Copyright (c) 2018 He Yangxuan
> > + */
> > +
> > +/dts-v1/;
> > +
> > +#include "meson-gxl-s905d-p230.dts"
> > +
> > +/ {
> > +       compatible = "phicomm,n1", "amlogic,s905d", "amlogic,meson-gxl";
> the "phicomm" vendor-prefix should be documented in
> devicetree/bindings/vendor-prefixes.txt (in a separate pach)
> additionally "phicomm,n1" should be documented in
> Documentation/devicetree/bindings/arm/amlogic.txt (in a separate patch
> as well)
I will submit separate patch later for vendor. 
> > +       model = "Phicomm N1";
> > +
> > +       cvbs-connector {
> > +               status = "disabled";
> > +       };
> > +};
> > +
> > +&cvbs_vdac_port {
> > +       status = "disabled";
> > +};
> > +
> > +&external_mdio {
> > +       external_phy: ethernet-phy at 0 {
> > +               compatible = "ethernet-phy-id001c.c916", "ethernet-phy-ieee802.3-c22";
> please don't use a "ethernet-phy-id..." compatible
> see commit 7630ea4bda18df "Documentation: net: phy: improve
> explanation when to specify the PHY ID" for the reason why (when the
> documentation was updated we already used "ethernet-phy-id..." for
> some boards)
> 
> > +               reg = <0>;
> > +               eee-broken-1000t;
> > +               max-speed = <1000>;
> > +               interrupt-parent = <&gpio_intc>;
> please add a comment here stating to which GPIO IRQ 29 belongs to (see
> meson-gxm-khadas-vim2.dts for an example)
> 
> > +               interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
> > +       };
> > +};
> > --
> > 2.11.0
> >
> >
> > _______________________________________________
> > linux-amlogic mailing list
> > linux-amlogic at lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-amlogic
> 
> 
> Regards
> Martin

Neil Armstrong suggest me in IRC just keep different part from meson-gxl-s905d-p230.dts, so the external phy part should simple like this:

&external_mdio {
        external_phy: ethernet-phy at 0 {
                /* Realtek RTL8211F (0x001cc916) */
                eee-broken-1000t;
        };
};

Yangxuan