Hi everybody, this is the next version of this series for USB host support on TQMa8MPxL + MBa8MPxL. Thanks everybody for their feedback on v1. 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 [1] & [2]. Hacking this into mainline resulted in a working superspeed setup as well. I also noticed that on some android kernel [3] 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). Changes in v3: * Added Krzysztof's A-b to Patch 1 * Added Li Jun's R-b to Patch 2 * Remove 'snps,dis-u2-freeclk-exists-quirk' in Patch 3 snps,gfladj-refclk-lpm-sel-quirk is a superset of the old one * Removed 'snps,dis_u3_susphy_quirk' in Patch 4 This is addressed by patch series [4] & [5] separately Thanks and best regards, Alexander [1] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/usb/dwc3/dwc3-imx8mp.c?h=lf-5.10.y#n134 [2] https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/usb/dwc3/core.c?h=lf-5.10.y#n333 [3] https://android.googlesource.com/kernel/msm/+/87a6b154766907020cc74c7726e8a68aaa9d7f6b%5E%21/#F0 [4] https://lore.kernel.org/all/1662547028-22279-1-git-send-email-jun.li@xxxxxxx/ [5] https://lore.kernel.org/all/1663067426-29534-1-git-send-email-jun.li@xxxxxxx/ 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 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 | 41 +++++++++++++++++++ arch/arm64/boot/dts/freescale/imx8mp.dtsi | 4 +- drivers/usb/dwc3/core.c | 8 +++- drivers/usb/dwc3/core.h | 2 + 5 files changed, 57 insertions(+), 3 deletions(-) -- 2.25.1
