[PATCH 3/3] arm64: dts: ipq6018: enable USB2 support

[Baruch Siach]

Hi Kathiravan T,

Thanks for your review.

On Fri, Feb 05 2021, Kathiravan T wrote:
> On 2021-01-27 19:50, Baruch Siach wrote:
>> From: Kathiravan T <kathirav at codeaurora.org>
>> Signed-off-by: Kathiravan T <kathirav at codeaurora.org>
>> [baruch: adjust regs address/size; drop binding updates;
>>  drop unsupported quirk properties]
>> Signed-off-by: Baruch Siach <baruch at tkos.co.il>
>> ---
>>  arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts |  8 ++++
>>  arch/arm64/boot/dts/qcom/ipq6018.dtsi        | 48 ++++++++++++++++++++
>>  2 files changed, 56 insertions(+)
>> diff --git a/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
>> b/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
>> index 99cefe88f6f2..5aec18308712 100644
>> --- a/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
>> +++ b/arch/arm64/boot/dts/qcom/ipq6018-cp01-c1.dts
>> @@ -78,3 +78,11 @@ nand at 0 {
>>  		nand-bus-width = <8>;
>>  	};
>>  };
>> +
>> +&qusb_phy_1 {
>> +	status = "ok";
>> +};
>> +
>> +&usb2 {
>> +	status = "ok";
>> +};
>> diff --git a/arch/arm64/boot/dts/qcom/ipq6018.dtsi
>> b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
>> index 9fa5b028e4f3..d4a3d4e4a7e9 100644
>> --- a/arch/arm64/boot/dts/qcom/ipq6018.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/ipq6018.dtsi
>> @@ -524,6 +524,54 @@ qrtr_requests {
>>  			};
>>  		};
>> +		qusb_phy_1: qusb at 59000 {
>> +			compatible = "qcom,ipq6018-qusb2-phy";
>> +			reg = <0x0 0x059000 0x0 0x180>;
>> +			#phy-cells = <0>;
>> +
>> +			clocks = <&gcc GCC_USB1_PHY_CFG_AHB_CLK>,
>> +				 <&xo>;
>> +			clock-names = "cfg_ahb", "ref";
>
> As per the bindings, ref clock should be 19.2MHz where the XO in IPQ60xx is
> 24MHz. Did the USB enumerated successfully and able to perform read / write
> operations?

I managed to enumerate an Ethernet USB dongle with only this series
applied.  But then I tested again with USB storage device. That only
worked with downstream clock adjust/period patch:

  https://source.codeaurora.org/quic/qsdk/oss/kernel/linux-ipq-5.4/commit/?h=fig&id=707d8fa2b481888f4792edc6561e81999301cbcf

That patch applies cleanly on top of v5.11-rc4.

Is anyone at Codeaurora pushing the dwc3 clock patch upstream? Should I
do that?

Thanks,
baruch

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