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Message-ID: <32790e6f-e708-ceee-e17f-1b09c909c991@microchip.com>
Date:   Mon, 4 Jul 2022 05:41:33 +0000
From:   <Claudiu.Beznea@...rochip.com>
To:     <herve.codina@...tlin.com>
CC:     <gregkh@...uxfoundation.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <Nicolas.Ferre@...rochip.com>,
        <alexandre.belloni@...tlin.com>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <Horatiu.Vultur@...rochip.com>,
        <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v4 3/3] ARM: dts: lan966x: Add UDPHS support

On 01.07.2022 17:03, Herve Codina wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Hi Claudiu,
> 
> On Fri, 1 Jul 2022 10:56:46 +0000
> <Claudiu.Beznea@...rochip.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
>>>
>>> Add UDPHS (the USB High Speed Device Port controller) support.
>>>
>>> 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.
>>>
>>> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
>>> ---
>>>  arch/arm/boot/dts/lan966x.dtsi | 11 +++++++++++
>>>  1 file changed, 11 insertions(+)
>>>
>>> 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@...c0000 {
>>>                         reg = <0xe00c0000 0x350>;
>>>                 };
>>>
>>> +               udc: usb@...08000 {
>>> +                       compatible = "microchip,lan9662-udc",
>>> +                                    "atmel,sama5d3-udc";
>>> +                       reg = <0x00200000 0x80000>,
>>> +                             <0xe0808000 0x400>;
>>> +                       interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
>>> +                       clocks = <&clks GCK_GATE_UDPHS>, <&nic_clk>;
>>> +                       clock-names = "pclk", "hclk";
>>> +                       status = "disabled";
>>> +               };
>>> +
>>
>> I have these compilation warnings:
>>
>>   DTC     arch/arm/boot/dts/lan966x-pcb8291.dtb
>> arch/arm/boot/dts/lan966x.dtsi:461.21-470.5: Warning (simple_bus_reg):
>> /soc/usb@...08000: 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@...08000: 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@...08000: 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 ?

Oh, and the set of commands I'm using:
make sama7_defconfig
make menuconfig + enable CONFIG_SOC_LAN966
make W=1 dtbs

> 
> Thanks,
> Hervé
> 
> --
> Hervé Codina, Bootlin
> Embedded Linux and Kernel engineering
> https://bootlin.com

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