Hi > -----Original Message----- > From: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx> > Sent: Wednesday, September 7, 2022 10:46 PM > To: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>; Rob Herring > <robh+dt@xxxxxxxxxx>; Krzysztof Kozlowski > <krzysztof.kozlowski+dt@xxxxxxxxxx>; Shawn Guo <shawnguo@xxxxxxxxxx>; > Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>; Pengutronix Kernel Team > <kernel@xxxxxxxxxxxxxx>; Fabio Estevam <festevam@xxxxxxxxx>; dl-linux-imx > <linux-imx@xxxxxxx>; Jun Li <jun.li@xxxxxxx> > Cc: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>; > linux-usb@xxxxxxxxxxxxxxx; devicetree@xxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx > Subject: [PATCH 0/4] USB host support for TQMa8MPxL + MBa8MPxL > > Hi everybody, > > this is a series based on the RFC at [1] for USB host support on TQMa8MPxL > + MBa8MPxL. The main difference is that USB DR support has already been added > and has been removed from this series. > > The DT configuration itself (patch 4) is rather straight forward, but leads > to the following dmesg errors regarding superspeed ports: > > [ 8.549243] hub 2-1:1.0: hub_ext_port_status failed (err = -110) > > [ 22.885263] usb 2-1: Failed to suspend device, error -110 > > This hardware works fine using the downstream kernel, because for imx8mp > this ITP sync feature is enabled conditionally [2] & [3]. > Hacking this into mainline resulted in a working superspeed setup as well. > I also noticed that on some android kernel [4] depending in IP core version > either GCTL.SOFTITPSYNC or GFLADJ.GFLADJ_REFCLK_LPM_SEL is enabled > unconditionally. > So I opted for the latter one using some quirk (patch 1-3). > > I have to admit I do not know what this is actually about, nor why my setup > does not work without this change or why this fixed my problem. So maybe > someone with more knowledge can say if this is the way to go or what this > is about. This can be updated:) > > I also added snps,dis_u3_susphy_quirk to the board level as for some reason > USB Superspeed U3 does not work. Detecting the onboard hub takes much longer > and once all devices are diconnected from the hub it is put into runtime > suspend (U3) and new attached devices are not detected at all. Until the > cause is known and fixed runtime suspend has to be disabled. For this issue you are reporting, I am not sure if this is caused by a USB clock change merged on v5.19, if you use latest kernel, can you try with below patches applied to see if U3 can work for you? [1] https://patchwork.kernel.org/project/linux-arm-kernel/patch/1662547028-22279-1-git-send-email-jun.li@xxxxxxx/ [2] https://patchwork.kernel.org/project/linux-arm-kernel/patch/1662547028-22279-2-git-send-email-jun.li@xxxxxxx/ [3] https://patchwork.kernel.org/project/linux-arm-kernel/patch/1661328612-3932-1-git-send-email-jun.li@xxxxxxx/ Li Jun > > Thanks and best regards, > Alexander > > [1] > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore. > kernel.org%2Fall%2F20220622130440.955465-1-alexander.stein%40ew.tq-grou > p.com%2F&data=05%7C01%7Cjun.li%40nxp.com%7Cd1bdfb58b364464e957d08da > 90dfc29f%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C63798158796971424 > 0%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6I > k1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=WSQHERVO9SCWk%2B%2Fmq8g > K78yluy5VE7T%2BhUaDMlNhbWk%3D&reserved=0 > [2] > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsourc > e.codeaurora.org%2Fexternal%2Fimx%2Flinux-imx%2Ftree%2Fdrivers%2Fusb%2F > dwc3%2Fdwc3-imx8mp.c%3Fh%3Dlf-5.10.y%23n134&data=05%7C01%7Cjun.li%4 > 0nxp.com%7Cd1bdfb58b364464e957d08da90dfc29f%7C686ea1d3bc2b4c6fa92cd99c5 > c301635%7C0%7C0%7C637981587969870477%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC > 4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7 > C&sdata=9%2FxYZoZSelekGcWIZZNwRQqy8LTGPnnn13Rf4L5a0iY%3D&reserv > ed=0 > [3] > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsourc > e.codeaurora.org%2Fexternal%2Fimx%2Flinux-imx%2Ftree%2Fdrivers%2Fusb%2F > dwc3%2Fcore.c%3Fh%3Dlf-5.10.y%23n333&data=05%7C01%7Cjun.li%40nxp.co > m%7Cd1bdfb58b364464e957d08da90dfc29f%7C686ea1d3bc2b4c6fa92cd99c5c301635 > %7C0%7C0%7C637981587969870477%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM > DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&s > data=Or9hvtM%2F9DhPZbfv%2BKzwAm8QTyXg4y0ddVbMFqOM67Q%3D&reserved=0 > [4] > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fandro > id.googlesource.com%2Fkernel%2Fmsm%2F%2B%2F87a6b154766907020cc74c7726e8 > a68aaa9d7f6b%255E%2521%2F%23F0&data=05%7C01%7Cjun.li%40nxp.com%7Cd1 > bdfb58b364464e957d08da90dfc29f%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7 > C0%7C637981587969870477%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJ > QIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=3 > tjAzUL81SwFkaoUh56CND%2B27FHqdo6TbY7Z66ldE8Q%3D&reserved=0 > > Alexander Stein (4): > dt-bindings: usb: dwc3: Add gfladj-refclk-lpm-sel-quirk > usb: dwc3: core: add gfladj_refclk_lpm_sel quirk > arm64: dts: imx8mp: Add snps,gfladj-refclk-lpm-sel quirk to USB nodes > arm64: dts: tqma8mpql: add support for 2nd USB (host) interface > > .../devicetree/bindings/usb/snps,dwc3.yaml | 5 +++ > .../freescale/imx8mp-tqma8mpql-mba8mpxl.dts | 42 +++++++++++++++++++ > arch/arm64/boot/dts/freescale/imx8mp.dtsi | 2 + > drivers/usb/dwc3/core.c | 8 +++- > drivers/usb/dwc3/core.h | 2 + > 5 files changed, 58 insertions(+), 1 deletion(-) > > -- > 2.25.1
