linux-kernel - Re: [PATCH] usb: dwc2: add new compatible for Intel SoCFPGA Stratix10 platform

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Date:   Tue, 18 Jul 2023 09:56:55 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Li, Meng" <Meng.Li@...driver.com>,
        "dinguyen@...nel.org" <dinguyen@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usb: dwc2: add new compatible for Intel SoCFPGA Stratix10
 platform

On 18/07/2023 09:43, Li, Meng wrote:
> 
> 
>> -----Original Message-----
>> From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>> Sent: Tuesday, July 18, 2023 2:11 PM
>> To: Li, Meng <Meng.Li@...driver.com>; dinguyen@...nel.org;
>> robh+dt@...nel.org; krzysztof.kozlowski+dt@...aro.org; conor+dt@...nel.org;
>> devicetree@...r.kernel.org
>> Cc: linux-kernel@...r.kernel.org
>> Subject: Re: [PATCH] usb: dwc2: add new compatible for Intel SoCFPGA Stratix10
>> platform
>>
>> CAUTION: This email comes from a non Wind River email account!
>> Do not click links or open attachments unless you recognize the sender and
>> know the content is safe.
>>
>> On 18/07/2023 05:08, Meng Li wrote:
>>> Intel Stratix10 is very the same with Agilex platform, the DWC2 IP on
>>> the Stratix platform also does not support clock-gating. The commit
>>> 3d8d3504d233("usb: dwc2: Add platform specific data for Intel's
>>> Agilex") had fixed this issue. So, add the essential compatible to
>>> also use the specific data on Stratix10 platform.
>>>
>>> Signed-off-by: Meng Li <Meng.Li@...driver.com>
>>> ---
>>>  arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi | 4 ++--
>>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
>>> b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
>>> index ea788a920eab..b8dd5509c214 100644
>>> --- a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
>>> +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
>>> @@ -490,7 +490,7 @@ usbphy0: usbphy@0 {
>>>               };
>>>
>>>               usb0: usb@...00000 {
>>> -                     compatible = "snps,dwc2";
>>> +                     compatible = "intel,socfpga-agilex-hsotg",
>>> + "snps,dwc2";
>>
>> You miss SoC specific compatible.
>>
> 
> Sorry! I don't understand what do you mean about SoC specific compatible.
> I think agilex is the soc specific.
> Could you please show your example?

But this is stratix.

rk3128.dtsi

Or many other devices in Linux kernel.

Best regards,
Krzysztof