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List: linux-usb
Subject: [Bug] Endless deferred probe of dwc2 on RPi 3
From: Stefan Wahren <stefan.wahren () i2se ! com>
Date: 2018-01-05 20:11:35
Message-ID: 1098363332.45288.1515183095677 () email ! 1und1 ! de
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Hi,
i noticed on my Raspberry Pi 3 (Linux 4.15rc6, ARM64, defconfig) that probing of dwc2 \
driver is deferred endlessly. This issue is triggered by a recent DT clean up \
014d6da6cb25 ("ARM: dts: bcm283x: Fix DTC warnings about missing phy-cells") which is \
correct according to Documentation/devicetree/bindings/usb/usb-nop-xceiv.txt
Here is the call stack which always returns -EPROBE_DEFER on this platform:
dwc2_lowlevel_hw_init()
devm_phy_get()
phy_get()
_of_phy_get()
Btw Raspberry Pi 2 (ARM, multi_v7_defconfig) is also affected, but not Raspberry Pi \
Zero W (ARM, bcm2835_config) while all 3 platforms share the same USB DT nodes.
Any ideas to fix this issue are welcome.
Best regards
Stefan
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