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Date:   Fri, 1 Jul 2022 16:03:27 +0200
From:   Herve Codina <herve.codina@bootlin.com>
To:     <Claudiu.Beznea@microchip.com>
Cc:     <gregkh@linuxfoundation.org>, <robh+dt@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>, <Nicolas.Ferre@microchip.com>,
        <alexandre.belloni@bootlin.com>, <mturquette@baylibre.com>,
        <sboyd@kernel.org>, <Horatiu.Vultur@microchip.com>,
        <linux-usb@vger.kernel.org>, <devicetree@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <linux-clk@vger.kernel.org>,
        <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH v4 3/3] ARM: dts: lan966x: Add UDPHS support
Message-ID: <20220701160327.102880e5@bootlin.com>
In-Reply-To: <72a1e572-45d7-de18-8f1f-9035d75b562b@microchip.com>
References: <20220701070928.459135-1-herve.codina@bootlin.com>
        <20220701070928.459135-4-herve.codina@bootlin.com>
        <72a1e572-45d7-de18-8f1f-9035d75b562b@microchip.com>
Organization: Bootlin
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Hi Claudiu,

On Fri, 1 Jul 2022 10:56:46 +0000
<Claudiu.Beznea@microchip.com> wrote:

> On 01.07.2022 10:09, Herve Codina wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know =
the content is safe
> >=20
> > Add UDPHS (the USB High Speed Device Port controller) support.
> >=20
> > The both lan966x SOCs (LAN9662 and LAN9668) have the same UDPHS
> > IP. This IP is also the same as the one present in the SAMA5D3
> > SOC.
> >=20
> > Signed-off-by: Herve Codina <herve.codina@bootlin.com>
> > ---
> >  arch/arm/boot/dts/lan966x.dtsi | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> >=20
> > diff --git a/arch/arm/boot/dts/lan966x.dtsi b/arch/arm/boot/dts/lan966x=
.dtsi
> > index 3cb02fffe716..c98e7075c2b4 100644
> > --- a/arch/arm/boot/dts/lan966x.dtsi
> > +++ b/arch/arm/boot/dts/lan966x.dtsi
> > @@ -458,6 +458,17 @@ cpu_ctrl: syscon@e00c0000 {
> >                         reg =3D <0xe00c0000 0x350>;
> >                 };
> >=20
> > +               udc: usb@e0808000 {
> > +                       compatible =3D "microchip,lan9662-udc",
> > +                                    "atmel,sama5d3-udc";
> > +                       reg =3D <0x00200000 0x80000>,
> > +                             <0xe0808000 0x400>;
> > +                       interrupts =3D <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
> > +                       clocks =3D <&clks GCK_GATE_UDPHS>, <&nic_clk>;
> > +                       clock-names =3D "pclk", "hclk";
> > +                       status =3D "disabled";
> > +               };
> > + =20
>=20
> I have these compilation warnings:
>=20
>   DTC     arch/arm/boot/dts/lan966x-pcb8291.dtb
> arch/arm/boot/dts/lan966x.dtsi:461.21-470.5: Warning (simple_bus_reg):
> /soc/usb@e0808000: simple-bus unit address format error, expected "200000"
>   DTC     arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt-6g-2gs.dtb
> arch/arm/boot/dts/lan966x.dtsi:461.21-470.5: Warning (simple_bus_reg):
> /soc/usb@e0808000: simple-bus unit address format error, expected "200000"
>   DTC     arch/arm/boot/dts/lan966x-kontron-kswitch-d10-mmt-8g.dtb
> arch/arm/boot/dts/lan966x.dtsi:461.21-470.5: Warning (simple_bus_reg):
> /soc/usb@e0808000: simple-bus unit address format error, expected "200000"

I am a bit confused but these warnings do not appear on my side (patches
based on v5.19-rc1).
What is the exact command that leads to these warning ?

Thanks,
Herv=C3=A9

--=20
Herv=C3=A9 Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com