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Message-ID: <1437403179.11518.10.camel@mhfsdcap03>
Date: Mon, 20 Jul 2015 22:39:39 +0800
From: chunfeng yun <chunfeng.yun@...iatek.com>
To: Daniel Kurtz <djkurtz@...omium.org>
CC: Mathias Nyman <mathias.nyman@...el.com>,
Mark Rutland <mark.rutland@....com>,
"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
<linux-usb@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
Felipe Balbi <balbi@...com>, Rob Herring <robh+dt@...nel.org>,
<linux-mediatek@...ts.infradead.org>,
Matthias Brugger <matthias.bgg@...il.com>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
Roger Quadros <rogerq@...com>
Subject: Re: [PATCH v2 5/5] arm64: dts: mediatek: add xHCI & usb phy for
mt8173
Hi,
On Tue, 2015-07-14 at 18:12 +0800, Daniel Kurtz wrote:
> Hi Chunfeng,
>
> On Wed, Jul 8, 2015 at 5:41 PM, Chunfeng Yun <chunfeng.yun@...iatek.com> wrote:
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> > ---
> > arch/arm64/boot/dts/mediatek/mt8173-evb.dts | 15 +++++++++++++++
> > arch/arm64/boot/dts/mediatek/mt8173.dtsi | 27 +++++++++++++++++++++++++++
> > 2 files changed, 42 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
> > index f433c21..cb63dc3 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
> > +++ b/arch/arm64/boot/dts/mediatek/mt8173-evb.dts
> > @@ -13,6 +13,7 @@
> > */
> >
> > /dts-v1/;
> > +#include <dt-bindings/gpio/gpio.h>
> > #include "mt8173.dtsi"
> >
> > / {
> > @@ -32,6 +33,15 @@
> > };
> >
> > chosen { };
> > +
> > + usb_p1_vbus: fixedregulator@0 {
>
> Why @0 ?
It is the first fixed regulator, so set it to 0 as a index.
I will remove it later
>
> > + compatible = "regulator-fixed";
> > + regulator-name = "usb_vbus";
> > + regulator-min-microvolt = <5000000>;
> > + regulator-max-microvolt = <5000000>;
> > + gpio = <&pio 130 GPIO_ACTIVE_HIGH>;
> > + enable-active-high;
> > + };
> > };
> >
> > &pwrap {
> > @@ -211,3 +221,8 @@
> > &uart0 {
> > status = "okay";
> > };
> > +
> > +&usb {
> > + reg-vusb33-supply = <&mt6397_vusb_reg>;
> > + reg-vbus-supply = <&usb_p1_vbus>;
> > +};
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8173.dtsi b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> > index 0696f8f..452bd0a 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8173.dtsi
> > @@ -15,6 +15,7 @@
> > #include <dt-bindings/interrupt-controller/irq.h>
> > #include <dt-bindings/interrupt-controller/arm-gic.h>
> > #include <dt-bindings/reset-controller/mt8173-resets.h>
> > +#include <dt-bindings/power/mt8173-power.h>
>
> Sort alphabetically, so:
> power before reset
>
Ok
> > #include "mt8173-pinfunc.h"
> >
> > / {
> > @@ -393,6 +394,32 @@
> > #size-cells = <0>;
> > status = "disabled";
> > };
> > +
> > + usb: usb30@...70000 {
> > + compatible = "mediatek,mt8173-xhci";
> > + reg = <0 0x11270000 0 0x1000>;
> > + interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_LOW>;
> > + usb-phy = <&u3phy>;
> > + usb3-lpm-capable;
> > + clocks = <&topckgen CLK_TOP_USB30_SEL>;
> > + clock-names = "sys_mac";
> > + };
> > +
> > + u3phy: usb-phy@...71000 {
> > + compatible = "mediatek,mt8173-u3phy";
> > + reg = <0 0x11271000 0 0x3000>,
> > + <0 0x11280000 0 0x20000>;
> > + power-domains = <&scpsys MT8173_POWER_DOMAIN_USB>;
> > + usb-wakeup-ctrl = <&pericfg>;
> > + wakeup-src = <1>;
> > + u2port-num = <2>;
>
> Mediatek specific properties should be prefixed with "mediatek,".
> I also find it nicer if you put the standard properties first:
> (compatible, reg, clocks, clock-names, power-domains)
> then device specific properties:
> (usb-wakeup-ctrl, wakeup-src, u2port-num)
> and then the final:
> status="disabled";
>
> This last is currently missing, so please add it, too.
>
I will revise it. Thanks a lot.
> Also, is there some pinctrl settings that must be set for USB?
>
There is no special pinctrl setting for USB on EVB board on which driver
is tested.
> Lastly, I could not quite figure out which patch this set was based on.
> Patch [0] mentions v4.2-rc1, however, the .dts changes in this patch
> did not apply cleanly.
> Perhaps it was based on a particular patch of Matthias tree?
>
Yes, it is.
> Thanks!
> -Dan
>
> > + clocks = <&pericfg CLK_PERI_USB0>,
> > + <&pericfg CLK_PERI_USB1>,
> > + <&apmixedsys CLK_APMIXED_REF2USB_TX>;
> > + clock-names = "wakeup_deb_p0",
> > + "wakeup_deb_p1",
> > + "u3phya_ref";
> > + };
> > };
> > };
> >
> > --
> > 1.8.1.1.dirty
> >
> >
> > _______________________________________________
> > Linux-mediatek mailing list
> > Linux-mediatek@...ts.infradead.org
> > http://lists.infradead.org/mailman/listinfo/linux-mediatek
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