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Date:   Fri, 9 Jun 2023 11:32:04 +0530
From:   Varadarajan Narayanan <quic_varada@quicinc.com>
To:     Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
CC:     <agross@kernel.org>, <andersson@kernel.org>,
        <konrad.dybcio@linaro.org>, <gregkh@linuxfoundation.org>,
        <robh+dt@kernel.org>, <krzysztof.kozlowski+dt@linaro.org>,
        <conor+dt@kernel.org>, <mturquette@baylibre.com>,
        <sboyd@kernel.org>, <quic_wcheng@quicinc.com>,
        <linux-arm-msm@vger.kernel.org>, <linux-usb@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-clk@vger.kernel.org>
Subject: Re: [PATCH v14 3/5] arm64: dts: qcom: ipq9574: Add USB related nodes
Message-ID: <20230609060203.GA22023@varda-linux.qualcomm.com>
References: <cover.1686217906.git.quic_varada@quicinc.com>
 <2f91eb879daaf9955dc56135d60a4be5e191a44d.1686217906.git.quic_varada@quicinc.com>
 <71960b11-5686-9af5-423b-bfdaec56f3f9@linaro.org>
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On Thu, Jun 08, 2023 at 02:06:49PM +0300, Dmitry Baryshkov wrote:
> On 08/06/2023 13:03, Varadarajan Narayanan wrote:
> >Add USB phy and controller related nodes
> >
> >SS PHY need two supplies and HS PHY needs three supplies. 0.925V
> >and 3.3V are from fixed regulators and 1.8V is generated from
> >PMIC's LDO
> >
> >Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> >Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
> >---
> >  Changes in v13:
> >	- Move fixed regulator definitions from SoC dtsi to board dts
> >	- Remove 'dr_mode' from SoC dtsi
> >	- Move 'status' property to the end
> >  Changes in v12:
> >	- Rebase
> >  Changes in v11:
> >	- Rename dwc_0 -> usb_0_dwc3
> >  Changes in v10:
> >	- Fix regulator definitions
> >  Changes in v8:
> >	- Change clocks order to match the bindings
> >  Changes in v7:
> >	- Change com_aux -> cfg_ahb
> >  Changes in v6:
> >	- Introduce fixed regulators for the phy
> >	- Resolved all 'make dtbs_check' messages
> >
> >  Changes in v5:
> >	- Fix additional comments
> >	- Edit nodes to match with qcom,sc8280xp-qmp-usb3-uni-phy.yaml
> >	- 'make dtbs_check' giving the following messages since
> >	  ipq9574 doesn't have power domains. Hope this is ok
> >
> >		/local/mnt/workspace/varada/varda-linux/arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dtb: phy@7d000: 'power-domains' is a required property
> >         	From schema: /local/mnt/workspace/varada/varda-linux/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb3-uni-phy.yaml
> >		/local/mnt/workspace/varada/varda-linux/arch/arm64/boot/dts/qcom/ipq9574-al02-c7.dtb: usb@8a00000: 'power-domains' is a required property
> >         	From schema: /local/mnt/workspace/varada/varda-linux/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml
> >
> >  Changes in v4:
> >	- Use newer bindings without subnodes
> >	- Fix coding style issues
> >
> >  Changes in v3:
> >	- Insert the nodes at proper location
> >
> >  Changes in v2:
> >	- Fixed issues flagged by Krzysztof
> >	- Fix issues reported by make dtbs_check
> >	- Remove NOC related clocks (to be added with proper
> >	  interconnect support)
> >---
> >  arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts | 18 ++++++
> >  arch/arm64/boot/dts/qcom/ipq9574.dtsi       | 85 +++++++++++++++++++++++++++++
> >  2 files changed, 103 insertions(+)
> >
> >diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> >index 2b3ed8d..8261a2b 100644
> >--- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> >+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
> >@@ -21,6 +21,24 @@
> >  	chosen {
> >  		stdout-path = "serial0:115200n8";
> >  	};
> >+
> >+	regulator_fixed_3p3: s3300 {
> >+		compatible = "regulator-fixed";
> >+		regulator-min-microvolt = <3300000>;
> >+		regulator-max-microvolt = <3300000>;
> >+		regulator-boot-on;
> >+		regulator-always-on;
> >+		regulator-name = "fixed_3p3";
> >+	};
> >+
> >+	regulator_fixed_0p925: s0925 {
> >+		compatible = "regulator-fixed";
> >+		regulator-min-microvolt = <925000>;
> >+		regulator-max-microvolt = <925000>;
> >+		regulator-boot-on;
> >+		regulator-always-on;
> >+		regulator-name = "fixed_0p925";
> >+	};
> >  };
>
> Let me repeat from v13, so that it is not lost (please excuse me for the
> spam):
>
> Nit: these two regulators are not references from SoC dtsi. So they don't
> have to be a part of this commit and can be moved to one of the next commits
> (I'd prefer the last one).

Sure. Have posted v15 with the suggested changes.
Please review.

Thanks
Varada

>
> >  &blsp1_uart2 {
> >diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> >index 0baeb10..feabc19 100644
> >--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> >+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
> >@@ -465,6 +465,91 @@
> >  			status = "disabled";
> >  		};
> >+		usb_0_qusbphy: phy@7b000 {
> >+			compatible = "qcom,ipq9574-qusb2-phy";
> >+			reg = <0x0007b000 0x180>;
> >+			#phy-cells = <0>;
> >+
> >+			clocks = <&gcc GCC_USB0_PHY_CFG_AHB_CLK>,
> >+				 <&xo_board_clk>;
> >+			clock-names = "cfg_ahb",
> >+				      "ref";
> >+
> >+			resets = <&gcc GCC_QUSB2_0_PHY_BCR>;
> >+			status = "disabled";
> >+		};
> >+
> >+		usb_0_qmpphy: phy@7d000 {
> >+			compatible = "qcom,ipq9574-qmp-usb3-phy";
> >+			reg = <0x0007d000 0xa00>;
> >+			#phy-cells = <0>;
> >+
> >+			clocks = <&gcc GCC_USB0_AUX_CLK>,
> >+				 <&xo_board_clk>,
> >+				 <&gcc GCC_USB0_PHY_CFG_AHB_CLK>,
> >+				 <&gcc GCC_USB0_PIPE_CLK>;
> >+			clock-names = "aux",
> >+				      "ref",
> >+				      "cfg_ahb",
> >+				      "pipe";
> >+
> >+			resets = <&gcc GCC_USB0_PHY_BCR>,
> >+				 <&gcc GCC_USB3PHY_0_PHY_BCR>;
> >+			reset-names = "phy",
> >+				      "phy_phy";
> >+
> >+			#clock-cells = <0>;
> >+			clock-output-names = "usb0_pipe_clk";
> >+
> >+			status = "disabled";
> >+		};
> >+
> >+		usb3: usb@8af8800 {
> >+			compatible = "qcom,ipq9574-dwc3", "qcom,dwc3";
> >+			reg = <0x08af8800 0x400>;
> >+			#address-cells = <1>;
> >+			#size-cells = <1>;
> >+			ranges;
> >+
> >+			clocks = <&gcc GCC_SNOC_USB_CLK>,
> >+				 <&gcc GCC_USB0_MASTER_CLK>,
> >+				 <&gcc GCC_ANOC_USB_AXI_CLK>,
> >+				 <&gcc GCC_USB0_SLEEP_CLK>,
> >+				 <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> >+
> >+			clock-names = "cfg_noc",
> >+				      "core",
> >+				      "iface",
> >+				      "sleep",
> >+				      "mock_utmi";
> >+
> >+			assigned-clocks = <&gcc GCC_USB0_MASTER_CLK>,
> >+					  <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> >+			assigned-clock-rates = <200000000>,
> >+					       <24000000>;
> >+
> >+			interrupts-extended = <&intc GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>;
> >+			interrupt-names = "pwr_event";
> >+
> >+			resets = <&gcc GCC_USB_BCR>;
> >+			status = "disabled";
> >+
> >+			usb_0_dwc3: usb@8a00000 {
> >+				compatible = "snps,dwc3";
> >+				reg = <0x8a00000 0xcd00>;
> >+				clocks = <&gcc GCC_USB0_MOCK_UTMI_CLK>;
> >+				clock-names = "ref";
> >+				interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
> >+				phys = <&usb_0_qusbphy>, <&usb_0_qmpphy>;
> >+				phy-names = "usb2-phy", "usb3-phy";
> >+				tx-fifo-resize;
> >+				snps,is-utmi-l1-suspend;
> >+				snps,hird-threshold = /bits/ 8 <0x0>;
> >+				snps,dis_u2_susphy_quirk;
> >+				snps,dis_u3_susphy_quirk;
> >+			};
> >+		};
> >+
> >  		intc: interrupt-controller@b000000 {
> >  			compatible = "qcom,msm-qgic2";
> >  			reg = <0x0b000000 0x1000>,  /* GICD */
>
> --
> With best wishes
> Dmitry
>