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Tue, 7 May 2019 06:43:06 +0000 (GMT) Subject: Re: [BUG BISECT] USB on Exynos4412 fails after usb: dwc2: gadget: Replace phyif with phy_utmi_width To: Minas Harutyunyan , Krzysztof Kozlowski , Jules Maselbas Cc: Felipe Balbi , "linux-usb@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-samsung-soc@vger.kernel.org" From: Marek Szyprowski Message-ID: Date: Tue, 7 May 2019 08:43:05 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 In-Reply-To: Content-Transfer-Encoding: 8bit Content-Language: en-US X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrOKsWRmVeSWpSXmKPExsWy7djPc7p/NC7GGPx9ym8x/2aSxawZp1kt zp/fwG5xedccNosZ5/cxWSxa1sps8W7KbWYHdo/T628yemxa1cnmMe9koMeW/Z8ZPT5vkgtg jeKySUnNySxLLdK3S+DKePLDq2CKSMWOmXwNjF2CXYwcHBICJhIzL1Z3MXJxCAmsYJQ4v3wv E4TzhVHi3ZdeKOczo0TX/adsXYycYB1tH7ZBJZYzSjzs3QLlvGWUWP7tPTtIlbBAnsT2XRPZ QRIiAq2MEt0N11lAHGaBb4wSc1u6WUGq2AQMJbredoHN5RWwk7hwCWQhJweLgIpEa/NzVpAL RQViJBZ9hioRlDg58wkLiM0p4CDRv2cN2BhmAXmJ5q2zmSFscYlbT+aDXSQhsIld4sbNuUwQ d7tIfDsygxHCFpZ4dXwLO4QtI/F/J0xDM9A/59ayQzg9jBKXm2A6rCUOH78IdhGzgKbE+l36 kOBzlNj3khXC5JO48VYQ4gY+iUnbpjNDhHklOtqEIGaoScw6vg5u68ELl5gnMCrNQvLZLCTf zELyzSyEtQsYWVYxiqeWFuempxYb56WW6xUn5haX5qXrJefnbmIEJp/T/45/3cG470/SIUYB DkYlHt4JThdihFgTy4orcw8xSnAwK4nwJj47FyPEm5JYWZValB9fVJqTWnyIUZqDRUmct5rh QbSQQHpiSWp2ampBahFMlomDU6qB8fyqw5+++B7Jv6hYyMF6V/1NT9Upi1Sj1J+qPn5eXuEW ck5+f/zr54fJLkhaxDKReW7dsaZ3Kc+Oir/0YRF74c0R927RLP/XFrMcJQ4IN5ZW8Mr5mMz8 3CKznnmTZlTYK0Omg286lNsqxezOdmxmSGxaNLdw3fny7O82mzkvlDczfetKeC+pxFKckWio xVxUnAgA3vsN0ToDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrDIsWRmVeSWpSXmKPExsVy+t/xe7q/NS7GGBy8yWsx/2aSxawZp1kt zp/fwG5xedccNosZ5/cxWSxa1sps8W7KbWYHdo/T628yemxa1cnmMe9koMeW/Z8ZPT5vkgtg jdKzKcovLUlVyMgvLrFVija0MNIztLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DLePLD q2CKSMWOmXwNjF2CXYycHBICJhJtH7YxdTFycQgJLGWUuLCpiR0iISNxcloDK4QtLPHnWhcb RNFrRolD++YwgySEBfIktu+ayA6SEBFoZZR43PkbrIpZ4BujxMkdd6BadjBKPNt4iBGkhU3A UKLrLcgsTg5eATuJC5d6mUBsFgEVidbm52D7RAViJE5M3cIOUSMocXLmExYQm1PAQaJ/zxqw GmYBM4l5mx8yQ9jyEs1bZ0PZ4hK3nsxnmsAoNAtJ+ywkLbOQtMxC0rKAkWUVo0hqaXFuem6x kV5xYm5xaV66XnJ+7iZGYMxtO/Zzyw7GrnfBhxgFOBiVeHgf2F6IEWJNLCuuzD3EKMHBrCTC m/jsXIwQb0piZVVqUX58UWlOavEhRlOg5yYyS4km5wPTQV5JvKGpobmFpaG5sbmxmYWSOG+H wMEYIYH0xJLU7NTUgtQimD4mDk6pBkZG6W1c/lyLK99qTFjhcP/Tlwvu6hFM6cvfqx2L2lnq syDG56Z7X0PLp3siK0Sulv8uVZ7b9sPYcqvgFMV/adwFszsEtWo4eIsU85t3TDsQV2Wqqzl/ btndmHsXYo4lawrIJ3bUf19cbT73zOSrwav3NE4RSnv50PMZX2CB3T4V8esL6lI0byixFGck GmoxFxUnAgBtvrXbzwIAAA== X-CMS-MailID: 20190507064307eucas1p1b6cfe0e7d91ed94230215a4c6e576879 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20190507062136epcas1p3729d57b9d22f834ccd2de0a081ddfbde X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190507062136epcas1p3729d57b9d22f834ccd2de0a081ddfbde References: <20190503204958.GA12532@kozik-lap> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Minas, On 2019-05-07 08:21, Minas Harutyunyan wrote: > Hi Krzysztof, > > On 5/4/2019 12:50 AM, Krzysztof Kozlowski wrote: >> Hi, >> >> Bisect pointed commit 707d80f0a3c5 ("usb: dwc2: gadget: Replace phyif >> with phy_utmi_width") as reason for failures of USB on Exynos4412, >> Odroid U3 board (ARMv7, exynos_defconfig, TFTP boot with nfsroot from >> NFSv4): >> >> [    4.333996] usb 1-2: new high-speed USB device number 3 using >> exynos-ehci >> [    4.503942] usb 1-2: device descriptor read/64, error -71 >> [    4.793970] usb 1-2: device descriptor read/64, error -71 >> [    4.914748] usb usb1-port2: attempt power cycle >> [    6.224267] usb 1-3: new high-speed USB device number 5 using >> exynos-ehci >> [    6.393983] usb 1-3: device descriptor read/64, error -71 >> [    6.684243] usb 1-3: device descriptor read/64, error -71 >> [    6.954259] usb 1-3: new high-speed USB device number 6 using >> exynos-ehci >> [    7.123980] usb 1-3: device descriptor read/64, error -71 >> [    7.413969] usb 1-3: device descriptor read/64, error -71 >> [    7.534778] usb usb1-port3: attempt power cycle >> >> The boot failure is effect of lack of network adapter (USB, smsc95xx). >> Expected: >> [    4.285831] usb 1-3: New USB device found, idVendor=0424, >> idProduct=3503, bcdDevice=a1.a0 >> [    4.288986] usb 1-3: New USB device strings: Mfr=0, Product=0, >> SerialNumber=0 >> [    4.299596] hub 1-3:1.0: USB hub found >> [    4.300027] hub 1-3:1.0: 3 ports detected >> [    5.895541] smsc95xx 1-2:1.0 eth0: link up, 100Mbps, full-duplex, >> lpa 0xCDE1 >> >> Full kernel log is here: >> https://urldefense.proofpoint.com/v2/url?u=https-3A__krzk.eu_-23_builders_25_builds_1330_steps_14_logs_serial0&d=DwIBaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=6z9Al9FrHR_ZqbbtSAsD16pvOL2S3XHxQnSzq8kusyI&m=OiD-VOiMNPgl24seQpn5JKZq7f85A4LNzaz8zX0YrKs&s=WBsxDt_1PXo9t9AxxJkUTTLE6zx_UDc7ac_U3EydCzI&e= >> >> https://urldefense.proofpoint.com/v2/url?u=https-3A__krzk.eu_-23_builders_25_builds_1330&d=DwIBaQ&c=DPL6_X_6JkXFx7AXWqB0tg&r=6z9Al9FrHR_ZqbbtSAsD16pvOL2S3XHxQnSzq8kusyI&m=OiD-VOiMNPgl24seQpn5JKZq7f85A4LNzaz8zX0YrKs&s=Lxk4ZiitEFaod88HTY0hthrdRy_TtktU53P6UDtaCoE&e= >> >> >> Let me know if you need any more details. >> >> Best regards, >> Krzysztof >> >> > > But fail seen on ehci driver not dwc2. Right, but dwc2 and ehci share common USB2 PHY on Exynos4 SoCs, although they use different ports of it. Best regards -- Marek Szyprowski, PhD Samsung R&D Institute Poland