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Mon, 11 Dec 2023 12:11:46 GMT Received: from hu-kriskura-hyd.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Mon, 11 Dec 2023 04:11:41 -0800 From: Krishna Kurapati To: Thinh Nguyen , Greg Kroah-Hartman , Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Wesley Cheng , Johan Hovold , Conor Dooley CC: , , , , , , Krishna Kurapati Subject: [PATCH v3 1/2] dt-bindings: usb: dwc3: Clean up hs_phy_irq in bindings Date: Mon, 11 Dec 2023 17:41:23 +0530 Message-ID: <20231211121124.4194-2-quic_kriskura@quicinc.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231211121124.4194-1-quic_kriskura@quicinc.com> References: <20231211121124.4194-1-quic_kriskura@quicinc.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: -eKA3A1GqCLVlxuxMfGxUUf2UM-XPZO9 X-Proofpoint-ORIG-GUID: -eKA3A1GqCLVlxuxMfGxUUf2UM-XPZO9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_02,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxscore=0 clxscore=1015 bulkscore=0 impostorscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2312110098 The high speed related interrupts present on QC targets are as follows: dp/dm irq's These IRQ's directly reflect changes on the DP/DM pads of the SoC. These are used as wakeup interrupts only on SoCs with non-QUSB2 targets with exception of SDM670/SDM845/SM6350. qusb2_phy irq SoCs with QUSB2 PHY do not have separate DP/DM IRQs and expose only a single IRQ whose behavior can be modified by the QUSB2PHY_INTR_CTRL register. The required DPSE/DMSE configuration is done in QUSB2PHY_INTR_CTRL register of phy address space. hs_phy_irq This is completely different from the above two and is present on all targets with exception of a few IPQ ones. The interrupt is not enabled by default and its functionality is mutually exclusive of qusb2_phy on QUSB targets and DP/DM on femto phy targets. The DTs of several QUSB2 PHY based SoCs incorrectly define "hs_phy_irq" when they should have been "qusb2_phy_irq". On Femto phy targets, the "hs_phy_irq" mentioned is either the actual "hs_phy_irq" or "pwr_event", neither of which would never be triggered directly are non-functional currently. The implementation tries to clean up this issue by addressing the discrepencies involved and fixing the hs_phy_irq's in respective DT's. Classiffy SoC's into four groups based on whether qusb2_phy interrupt or {dp/dm}_hs_phy_irq is used for wakeup in high speed and whether the SoCs have hs_phy_irq present in them or not. The ss_phy_irq is optional interrupt because there are mutliple SoC's which either support only High Speed or there are multiple controllers within same Soc and the secondary controller is High Speed only capable. This breaks ABI on targets running older kernels, but since the interrupt definitions are given wrong on many targets and to establish proper rules for usage of DWC3 interrupts on Qualcomm platforms, DT binding update is necessary. Signed-off-by: Krishna Kurapati --- .../devicetree/bindings/usb/qcom,dwc3.yaml | 138 ++++++++---------- 1 file changed, 59 insertions(+), 79 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml index 3ec62027f663..602949d64586 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.yaml @@ -98,12 +98,29 @@ properties: - const: apps-usb interrupts: - minItems: 1 - maxItems: 4 + description: | + Different types of interrupts are used based on HS PHY used on target: + - pwr_event: Used for wakeup based on other power events. + - hs_phY_irq: Apart from DP/DM/QUSB2 PHY interrupts, there is + hs_phy_irq which is not triggered by default and its + functionality is mutually exclusive to that of + {dp/dm}_hs_phy_irq and qusb2_phy_irq. + - qusb2_phy: SoCs with QUSB2 PHY do not have separate DP/DM IRQs and + expose only a single IRQ whose behavior can be modified + by the QUSB2PHY_INTR_CTRL register. The required DPSE/ + DMSE configuration is done in QUSB2PHY_INTR_CTRL register + of PHY address space. + - {dp/dm}_hs_phy_irq: These IRQ's directly reflect changes on the DP/ + DM pads of the SoC. These are used for wakeup + only on SoCs with non-QUSB2 targets with + exception of SDM670/SDM845/SM6350. + - ss_phy_irq: Used for remote wakeup in Super Speed mode of operation. + minItems: 2 + maxItems: 5 interrupt-names: - minItems: 1 - maxItems: 4 + minItems: 2 + maxItems: 5 qcom,select-utmi-as-pipe-clk: description: @@ -359,60 +376,21 @@ allOf: compatible: contains: enum: - - qcom,ipq4019-dwc3 + - qcom,ipq5018-dwc3 - qcom,ipq6018-dwc3 - - qcom,ipq8064-dwc3 - qcom,ipq8074-dwc3 - - qcom,msm8994-dwc3 - - qcom,qcs404-dwc3 - - qcom,sc7180-dwc3 - - qcom,sdm670-dwc3 - - qcom,sdm845-dwc3 - - qcom,sdx55-dwc3 - - qcom,sdx65-dwc3 - - qcom,sdx75-dwc3 - - qcom,sm4250-dwc3 - - qcom,sm6350-dwc3 - - qcom,sm8150-dwc3 - - qcom,sm8250-dwc3 - - qcom,sm8350-dwc3 - - qcom,sm8450-dwc3 - - qcom,sm8550-dwc3 - - qcom,sm8650-dwc3 - then: - properties: - interrupts: - items: - - description: The interrupt that is asserted - when a wakeup event is received on USB2 bus. - - description: The interrupt that is asserted - when a wakeup event is received on USB3 bus. - - description: Wakeup event on DM line. - - description: Wakeup event on DP line. - interrupt-names: - items: - - const: hs_phy_irq - - const: ss_phy_irq - - const: dm_hs_phy_irq - - const: dp_hs_phy_irq - - - if: - properties: - compatible: - contains: - enum: - qcom,msm8953-dwc3 - - qcom,msm8996-dwc3 - qcom,msm8998-dwc3 - - qcom,sm6115-dwc3 - - qcom,sm6125-dwc3 + - qcom,qcm2290-dwc3 then: properties: interrupts: - maxItems: 2 + minItems: 2 + maxItems: 3 interrupt-names: items: - - const: hs_phy_irq + - const: pwr_event + - const: qusb2_phy - const: ss_phy_irq - if: @@ -420,37 +398,21 @@ allOf: compatible: contains: enum: - - qcom,ipq5018-dwc3 - - qcom,ipq5332-dwc3 + - qcom,msm8996-dwc3 + - qcom,qcs404-dwc3 - qcom,sdm660-dwc3 - then: - properties: - interrupts: - minItems: 1 - maxItems: 2 - interrupt-names: - minItems: 1 - items: - - const: hs_phy_irq - - const: ss_phy_irq - - - if: - properties: - compatible: - contains: - enum: - - qcom,sc7280-dwc3 + - qcom,sm6115-dwc3 + - qcom,sm6125-dwc3 then: properties: interrupts: minItems: 3 maxItems: 4 interrupt-names: - minItems: 3 items: + - const: pwr_event - const: hs_phy_irq - - const: dp_hs_phy_irq - - const: dm_hs_phy_irq + - const: qusb2_phy - const: ss_phy_irq - if: @@ -458,10 +420,12 @@ allOf: compatible: contains: enum: + - qcom,ipq5332-dwc3 - qcom,sc8280xp-dwc3 then: properties: interrupts: + minItems: 3 maxItems: 4 interrupt-names: items: @@ -476,15 +440,30 @@ allOf: contains: enum: - qcom,sa8775p-dwc3 + - qcom,sc7180-dwc3 + - qcom,sc7280-dwc3 + - qcom,sdm670-dwc3 + - qcom,sdm845-dwc3 + - qcom,sdx55-dwc3 + - qcom,sdx65-dwc3 + - qcom,sdx75-dwc3 + - qcom,sm6350-dwc3 + - qcom,sm6375-dwc3 + - qcom,sm8150-dwc3 + - qcom,sm8250-dwc3 + - qcom,sm8350-dwc3 + - qcom,sm8450-dwc3 + - qcom,sm8550-dwc3 + - qcom,sm8650-dwc3 then: properties: interrupts: - minItems: 3 - maxItems: 4 + minItems: 4 + maxItems: 5 interrupt-names: - minItems: 3 items: - const: pwr_event + - const: hs_phy_irq - const: dp_hs_phy_irq - const: dm_hs_phy_irq - const: ss_phy_irq @@ -522,12 +501,13 @@ examples: <&gcc GCC_USB30_PRIM_MASTER_CLK>; assigned-clock-rates = <19200000>, <150000000>; - interrupts = , - , + interrupts = , + , + , , - ; - interrupt-names = "hs_phy_irq", "ss_phy_irq", - "dm_hs_phy_irq", "dp_hs_phy_irq"; + ; + interrupt-names = "pwr_event", "hs_phy_irq", + "dp_hs_phy_irq", "dm_hs_phy_irq", "ss_phy_irq"; power-domains = <&gcc USB30_PRIM_GDSC>;