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Message-ID: <d14567fd-0576-55bb-40c0-442e060c28ba@quicinc.com>
Date:   Mon, 15 May 2023 21:02:13 +0530
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Subject: Re: [PATCH v8 7/9] arm64: dts: qcom: sc8280xp: Add multiport
 controller node for SC8280
To:     Johan Hovold <johan@kernel.org>
CC:     Thinh Nguyen <Thinh.Nguyen@synopsys.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        "Andy Gross" <agross@kernel.org>,
        Bjorn Andersson <andersson@kernel.org>,
        "Konrad Dybcio" <konrad.dybcio@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Felipe Balbi <balbi@kernel.org>, <linux-usb@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>, <linux-arm-msm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <quic_pkondeti@quicinc.com>,
        <quic_ppratap@quicinc.com>, <quic_wcheng@quicinc.com>,
        <quic_jackp@quicinc.com>, <quic_harshq@quicinc.com>,
        <ahalaney@redhat.com>
References: <20230514054917.21318-1-quic_kriskura@quicinc.com>
 <20230514054917.21318-8-quic_kriskura@quicinc.com>
 <ZGJBLUsPcbsxj989@hovoldconsulting.com>
Content-Language: en-US
From:   Krishna Kurapati PSSNV <quic_kriskura@quicinc.com>
In-Reply-To: <ZGJBLUsPcbsxj989@hovoldconsulting.com>
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On 5/15/2023 7:56 PM, Johan Hovold wrote:
> On Sun, May 14, 2023 at 11:19:15AM +0530, Krishna Kurapati wrote:
>> Add USB and DWC3 node for tertiary port of SC8280 along with multiport
>> IRQ's and phy's. This will be used as a base for SA8295P and SA8295-Ride
>> platforms.
>>
>> Signed-off-by: Krishna Kurapati <quic_kriskura@quicinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 66 ++++++++++++++++++++++++++
>>   1 file changed, 66 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
>> index 8fa9fbfe5d00..50f6a8424537 100644
>> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
>> @@ -3133,6 +3133,72 @@ usb_1_role_switch: endpoint {
>>   			};
>>   		};
>>   
>> +		usb_2: usb@a4f8800 {
> 
> As I believe someone already pointed out, this node is not in sort order
> (i.e. it should go before usb@a6f8800).
> 
Hi Johan,

   I missed that message, but since I named it usb_2, so I placed it in 
order after usb_1. Hope that is fine !!

>> +			compatible = "qcom,sc8280xp-dwc3-mp", "qcom,dwc3";
>> +			reg = <0 0x0a4f8800 0 0x400>;
>> +			#address-cells = <2>;
>> +			#size-cells = <2>;
>> +			ranges;
>> +
>> +			clocks = <&gcc GCC_CFG_NOC_USB3_MP_AXI_CLK>,
>> +				 <&gcc GCC_USB30_MP_MASTER_CLK>,
>> +				 <&gcc GCC_AGGRE_USB3_MP_AXI_CLK>,
>> +				 <&gcc GCC_USB30_MP_SLEEP_CLK>,
>> +				 <&gcc GCC_USB30_MP_MOCK_UTMI_CLK>,
>> +				 <&gcc GCC_AGGRE_USB_NOC_AXI_CLK>,
>> +				 <&gcc GCC_AGGRE_USB_NOC_NORTH_AXI_CLK>,
>> +				 <&gcc GCC_AGGRE_USB_NOC_SOUTH_AXI_CLK>,
>> +				 <&gcc GCC_SYS_NOC_USB_AXI_CLK>;
>> +			clock-names = "cfg_noc", "core", "iface", "sleep", "mock_utmi",
>> +				      "noc_aggr", "noc_aggr_north", "noc_aggr_south", "noc_sys";
>> +
>> +			assigned-clocks = <&gcc GCC_USB30_MP_MOCK_UTMI_CLK>,
>> +					  <&gcc GCC_USB30_MP_MASTER_CLK>;
>> +			assigned-clock-rates = <19200000>, <200000000>;
>> +
>> +			interrupts-extended = <&pdc 127 IRQ_TYPE_EDGE_RISING>,
>> +					      <&pdc 126 IRQ_TYPE_EDGE_RISING>,
>> +					      <&pdc 16 IRQ_TYPE_LEVEL_HIGH>,
>> +					      <&intc GIC_SPI 130 IRQ_TYPE_LEVEL_HIGH>,
>> +					      <&intc GIC_SPI 135 IRQ_TYPE_LEVEL_HIGH>,
>> +					      <&intc GIC_SPI 857 IRQ_TYPE_LEVEL_HIGH>,
>> +					      <&intc GIC_SPI 856 IRQ_TYPE_LEVEL_HIGH>;
>> +
>> +			interrupt-names = "dp_hs_phy_irq",
>> +					  "dm_hs_phy_irq",
>> +					  "ss_phy_irq",
>> +					  "pwr_event_1",
>> +					  "pwr_event_2",
>> +					  "pwr_event_3",
>> +					  "pwr_event_4";
>> +
>> +			power-domains = <&gcc USB30_MP_GDSC>;
>> +			required-opps = <&rpmhpd_opp_nom>;
>> +
>> +			resets = <&gcc GCC_USB30_MP_BCR>;
>> +
>> +			interconnects = <&aggre1_noc MASTER_USB3_1 0 &mc_virt SLAVE_EBI1 0>,
>> +					<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_USB3_1 0>;
> 
> This is not the correct interconnect master and slave; it should be
> MASTER_USB3_MP and SLAVE_USB3_MP.
> 
Thanks for pointing it out. I need to check how it was working all these 
days. (Probably since both of them vote for the same NOC, it didn't show 
any affect)
>> +			interconnect-names = "usb-ddr", "apps-usb";
> 
> Looks like 'wakeup-source' is missing here too.
> 

I believe this property was added to enable wakeup from system suspend 
in host mode. I didn't add this property as currently I don't need to 
support wakeup. If any requirement comes in future, then I might need to 
add dp/dm interrupts (if any) for other ports as well and then need to 
change driver code to enable/disable them on suspend/resume.

>> +
>> +			status = "disabled";
>> +
>> +			usb_2_dwc3: usb@a400000 {
>> +				compatible = "snps,dwc3";
>> +				reg = <0 0x0a400000 0 0xcd00>;
>> +				interrupts = <GIC_SPI 133 IRQ_TYPE_LEVEL_HIGH>;
>> +				iommus = <&apps_smmu 0x800 0x0>;
>> +				phys = <&usb_2_hsphy0>, <&usb_2_qmpphy0>,
>> +					<&usb_2_hsphy1>, <&usb_2_qmpphy1>,
>> +					<&usb_2_hsphy2>,
>> +					<&usb_2_hsphy3>;
>> +				phy-names = "usb2-port0", "usb3-port0",
>> +						"usb2-port1", "usb3-port1",
>> +						"usb2-port2",
>> +						"usb2-port3";
> 
> The phys and phy-names continuation lines above are still not aligned.
> 
Missed it. Will fix it in next version.

Thanks,
Krishna,
>> +			};
>> +		};
>> +
>>   		mdss0: display-subsystem@ae00000 {
>>   			compatible = "qcom,sc8280xp-mdss";
>>   			reg = <0 0x0ae00000 0 0x1000>;
> 
> Johan