linux-kernel - Re: [PATCH v4 4/6] arm64: dts: qcom: ipq5332: Add USB related nodes

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Message-ID: <20230718081434.GA5012@varda-linux.qualcomm.com>
Date:   Tue, 18 Jul 2023 13:44:35 +0530
From:   Varadarajan Narayanan <quic_varada@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>
CC:     <agross@...nel.org>, <andersson@...nel.org>, <vkoul@...nel.org>,
        <kishon@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <gregkh@...uxfoundation.org>, <catalin.marinas@....com>,
        <will@...nel.org>, <p.zabel@...gutronix.de>, <arnd@...db.de>,
        <geert+renesas@...der.be>, <neil.armstrong@...aro.org>,
        <nfraprado@...labora.com>, <rafal@...ecki.pl>,
        <quic_srichara@...cinc.com>, <quic_varada@...cinc.org>,
        <quic_wcheng@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v4 4/6] arm64: dts: qcom: ipq5332: Add USB related nodes

On Sat, Jul 15, 2023 at 02:36:18PM +0200, Konrad Dybcio wrote:
> On 12.07.2023 13:38, Varadarajan Narayanan wrote:
> > Add USB phy and controller nodes.
> >
> > Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
> > ---
> > v4:
> > 	Change node name
> > 	Remove blank line
> > 	'make CHECK_DTBS=y DT_SCHEMA_FILES=qcom qcom/ipq5332-rdp441.dtb' passed
> DT_SCHEMA_FILES accepts yaml files

I followed the example given in https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/

		make CHECK_DTBS=y DT_SCHEMA_FILES=trivial-devices.yaml qcom/sm8450-hdk.dtb
		make CHECK_DTBS=y DT_SCHEMA_FILES=/gpio/ qcom/sm8450-hdk.dtb
	---->	make CHECK_DTBS=y DT_SCHEMA_FILES=qcom qcom/sm8450-hdk.dtb

Will include the yaml from next time.

Thanks
Varada

> Konrad
> > v1:
> > 	Rename phy node
> > 	Change compatible from m31,ipq5332-usb-hsphy -> qcom,ipq5332-usb-hsphy
> > 	Remove 'qscratch' from phy node
> > 	Fix alignment and upper-case hex no.s
> > 	Add clock definition for the phy
> > 	Remove snps,ref-clock-period-ns as it is not used. dwc3_ref_clk_period()
> > 	in dwc3/core.c takes the frequency from ref clock and calculates fladj
> > 	as appropriate.
> > ---
> >  arch/arm64/boot/dts/qcom/ipq5332.dtsi | 53 +++++++++++++++++++++++++++++++++++
> >  1 file changed, 53 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> > index 8bfc2db..8118356 100644
> > --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> > @@ -405,6 +405,59 @@
> >  				status = "disabled";
> >  			};
> >  		};
> > +
> > +		usbphy0: usb-phy@...00 {
> > +			compatible = "qcom,ipq5332-usb-hsphy";
> > +			reg = <0x0007b000 0x12c>;
> > +
> > +			clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>;
> > +			clock-names = "cfg_ahb";
> > +
> > +			resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> > +
> > +			status = "disabled";
> > +		};
> > +
> > +		usb2: usb2@...0000 {
> > +			compatible = "qcom,ipq5332-dwc3", "qcom,dwc3";
> > +			reg = <0x08af8800 0x400>;
> > +
> > +			interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
> > +			interrupt-names = "hs_phy_irq";
> > +
> > +			clocks = <&gcc GCC_USB0_MASTER_CLK>,
> > +				 <&gcc GCC_SNOC_USB_CLK>,
> > +				 <&gcc GCC_USB0_SLEEP_CLK>,
> > +				 <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> > +			clock-names = "core",
> > +				      "iface",
> > +				      "sleep",
> > +				      "mock_utmi";
> > +
> > +			resets = <&gcc GCC_USB_BCR>;
> > +
> > +			qcom,select-utmi-as-pipe-clk;
> > +
> > +			#address-cells = <1>;
> > +			#size-cells = <1>;
> > +			ranges;
> > +
> > +			status = "disabled";
> > +
> > +			usb2_0_dwc: usb@...0000 {
> > +				compatible = "snps,dwc3";
> > +				reg = <0x08a00000 0xe000>;
> > +				clocks = <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> > +				clock-names = "ref";
> > +				interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
> > +				usb-phy = <&usbphy0>;
> > +				tx-fifo-resize;
> > +				snps,is-utmi-l1-suspend;
> > +				snps,hird-threshold = /bits/ 8 <0x0>;
> > +				snps,dis_u2_susphy_quirk;
> > +				snps,dis_u3_susphy_quirk;
> > +			};
> > +		};
> >  	};
> >
> >  	timer {