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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-67b877d5978sm3149441a12.17.2026.05.04.03.25.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 04 May 2026 03:25:38 -0700 (PDT) Message-ID: <364faec0-7d71-49e6-b214-ac59785bb25c@oss.qualcomm.com> Date: Mon, 4 May 2026 12:25:36 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] arm64: dts: qcom: eliza: Describe the ADSP and USB related nodes To: Abel Vesa Cc: Krishna Kurapati PSSNV , Wesley Cheng , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260331-eliza-adsp-usb-v1-0-d8a251be20c3@oss.qualcomm.com> <20260331-eliza-adsp-usb-v1-1-d8a251be20c3@oss.qualcomm.com> <69d644bd-d64e-4ef4-b0ca-b47103e84764@oss.qualcomm.com> <5c7d64d6-6fc8-4323-894d-56d1dffa7d09@oss.qualcomm.com> <3886cbd8-be29-4aa4-8331-f5b9a2e2497e@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: 2PaQk5VEGCtlP89FF1r_8iQzTrM_yYQN X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTA0MDExMSBTYWx0ZWRfX7oDT4wq8pARj Xj82khRtIRm9/3LnKkNSqySKqiO7LVD3j3dh67wWdXgVFBdWftAydl5cIf/nv3U9xFXLVTKht/W aCnoZedhbQa4TfZ1MTzb5fITpaZrhlpV7pbs5rQfuUeE6o9H1J0FKmAvg/TmyEpolg/MsHSREiS iE6QfBum6DwLYD+JSyUZSxFtS8n80BAxeaVzfaT5UooOMd9vveBb5ta+Ur4OjFVCR8lv1ogrO2R bJ44wyjCDTPRC1Ip/EG8wISIZUOr+zoljuZsS3DWblDFhCOmi44jhOLZBEhrbyfEupCcRYrfKDH neHuH/wcTTmmud41zb960h4sbv5XaztutJnnuFQQ7UmOW8qvDpD2yr8u+bSxntgoFeP9S2YgqS8 gTyQwJXRq2QepMfordBEobrPiyVQdP+trcTWnALuqQ3E2dMrdsOJdB0DYhBRDqlRB3rnBRRFI+h U99KIlC36HGv+jUfS5g== X-Authority-Analysis: v=2.4 cv=csirVV4i c=1 sm=1 tr=0 ts=69f87424 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=EUspDBNiAAAA:8 a=dSS0pgqizFdtzYdKFxIA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-ORIG-GUID: 2PaQk5VEGCtlP89FF1r_8iQzTrM_yYQN X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-04_03,2026-04-30_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 phishscore=0 bulkscore=0 impostorscore=0 suspectscore=0 adultscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605040111 On 5/4/26 12:06 PM, Abel Vesa wrote: > On 26-04-29 11:45:10, Konrad Dybcio wrote: >> On 4/29/26 3:57 AM, Krishna Kurapati PSSNV wrote: >>> On Tue, Apr 28, 2026 at 2:54 PM Konrad Dybcio >>> wrote: >>>> >>>> On 4/28/26 7:46 AM, Krishna Kurapati PSSNV wrote: >>>>> On Wed, Apr 22, 2026 at 3:55 PM Abel Vesa wrote: >>>>>> >>>>>> On 26-04-22 12:09:31, Konrad Dybcio wrote: >>>>>>> On 4/22/26 11:41 AM, Abel Vesa wrote: >>>>>>>> On 26-03-31 15:37:08, Konrad Dybcio wrote: >>>>>>>>> On 3/31/26 12:37 PM, Abel Vesa wrote: >>>>>>>>>> Describe the ADSP remoteproc node along with its dependencies, including >>>>>>>>>> the IPCC mailbox, AOSS QMP and SMP2P links used for communication. >>>>>>>>>> >>>>>>>>>> The Eliza SoC features a USB 3.1 Gen 2 controller connected to a QMP >>>>>>>>>> combo PHY and an SNPS eUSB2 PHY. Describe them. >>>>>>>>>> >>>>>>>>>> Signed-off-by: Abel Vesa >>>>>>>>>> --- >>>>>>>>> >>>>>>>>> [...] >>>>>>>>> >>>>>>>>>> + usb_hsphy: phy@88e3000 { >>>>>>>>>> + compatible = "qcom,eliza-snps-eusb2-phy", >>>>>>>>>> + "qcom,sm8550-snps-eusb2-phy"; >>>>>>>>>> + reg = <0x0 0x088e3000 0x0 0x154>; >>>>>>>>>> + #phy-cells = <0>; >>>>>>>>>> + >>>>>>>>>> + clocks = <&rpmhcc RPMH_CXO_CLK>; >>>>>>>>> >>>>>>>>> This is TCSR_USB2_CLKREF_EN >>>>>>>> >>>>>>>> Good point. Will fix. >>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>> + usb: usb@a600000 { >>>>>>>>>> + compatible = "qcom,eliza-dwc3", "qcom,snps-dwc3"; >>>>>>>>> >>>>>>>>> Does the device suspend and resume successfully? >>>>>>>> >>>>>>>> Well, tested with pm_test devices and it does suspend and resume >>>>>>>> successfully, but there is this: >>>>>>>> >>>>>>>> [ 54.584126] dwc3-qcom a600000.usb: port-1 HS-PHY not in L2 >>>>>>>> >>>>>>>> But if I'm not mistaken, this is valid accross all SNPS eUSB2 PHYs, on >>>>>>>> all platforms that have them. >>>>>>> >>>>>>> Well it's not fatal, but ideally this wouldn't be there. Maybe you're missing >>>>>>> some DWC quirk in the list, although it seems pretty long already. Perhaps >>>>>>> Wesley would know more. >>>>>> >>>>>> + Wesley >>>>>> >>>>> >>>>> As per HPG and downstream, this is what needs to be done while entering suspend: >>>>> >>>>> 1. Clear PWR_EVNT_LPM_IN_L2_MASK bit of pwr_evnt_irq_stat_reg >>>>> 2. Clear PWR_EVNT_LPM_OUT_L2_MASK bit of pwr_evnt_irq_stat_reg >>>>> 3. Set the following bits in the pwr_evnt_irq_stat_reg: >>>>> a) DWC3_GUSB2PHYCFG_ENBLSLPM and DWC3_GUSB2PHYCFG_SUSPHY >>>> >>>> In case that's related, most platforms (including this one), set >>>> snps,dis_enblslpm_quirk which prevents the first bit from being set >>>> >>>> Likewise, snps,dis_u2_susphy_quirk for the second one >>>> >>>> (although it looks like setting these bits is currently >>>> unconditional upon suspend in HOST mode?) >>>> >>>> >>>> As for the sequence you mentioned, I believe the diff below should be >>>> OK - although it _really_ just adds some delay vs the current state, >>>> since the bits are cleared in the resume call >>>> >>>> diff --git a/drivers/usb/dwc3/dwc3-qcom.c b/drivers/usb/dwc3/dwc3-qcom.c >>>> index f43f73ac36ff..e7b1775b7207 100644 >>>> --- a/drivers/usb/dwc3/dwc3-qcom.c >>>> +++ b/drivers/usb/dwc3/dwc3-qcom.c >>>> @@ -12,6 +12,7 @@ >>>> #include >>>> #include >>>> #include >>>> +#include >>>> #include >>>> #include >>>> #include >>>> @@ -344,10 +345,18 @@ static int dwc3_qcom_suspend(struct dwc3_qcom *qcom, bool wakeup) >>>> return 0; >>>> >>>> for (i = 0; i < qcom->num_ports; i++) { >>>> - val = readl(qcom->qscratch_base + pwr_evnt_irq_stat_reg[i]); >>>> - if (!(val & PWR_EVNT_LPM_IN_L2_MASK)) >>>> + /* Wait for the PHYs to go into L2 */ >>>> + ret = readl_poll_timeout(qcom->qscratch_base + pwr_evnt_irq_stat_reg[i], >>>> + val, val & PWR_EVNT_LPM_IN_L2_MASK, >>>> + 10, 3 * USEC_PER_MSEC); >>>> + >>>> + if (ret == -ETIMEDOUT) >>>> dev_err(qcom->dev, "port-%d HS-PHY not in L2\n", i + 1); >>>> } >>>> + >>> >>> >>> I think its best to set the DWC3_GUSB2PHYCFG_ENBLSLPM and >>> DWC3_GUSB2PHYCFG_SUSPHY here as well based on quirks before polling >>> for the irq_stat register. >> >> Hm, it seems like the dwc3 core layer only does so in the suspend >> path if dr_mode = "host"? > > OK, so I guess the quirk list is complete then, right ? Yeah, seems that way Konrad