Messages in this thread | | | Date | Mon, 3 Jul 2023 13:56:52 +0200 | Subject | Re: [PATCH 0/3] Configure usb0 as peripheral on am335x boards | From | Julien Panis <> |
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On 6/30/23 21:40, Roger Quadros wrote: > Hi, > > On 30/06/2023 11:30, Julien Panis wrote: >> Hello Tony, >> >> On 6/30/23 09:20, Tony Lindgren wrote: >>> Hi, >>> >>> * Julien Panis <jpanis@baylibre.com> [230629 13:10]: >>>> This series configures usb0 dr_mode as 'peripheral' for am335x-evm, >>>> am335x-evmsk, and am335x-icev2. This USB port is mainly used for >>>> RNDIS and DFU. >>> Is this a mini-B connector? Just wondering if it was originally attempted >>> to be configured as OTG or how it ended up with a host configuration.. >> It's a micro USB-AB connector. >> I don't know how it ended up with a host configuration, it looks like an oversight. >> Maybe Vignesh or Nishanth can confirm (?) > usb0 role should be "otg". > It is rightly so in Linux DT. am33xx.dtsi contains "otg" and all AM335x board files inherit from it. > > So I don't think setting it to "peripheral" in u-boot is the right thing to do.
This series is for kernel (not for u-boot). Why is it a problem to set usb0 as 'peripheral' in kernel for the 3 board dts ?
With usb0 not set as 'peripheral', the 3 boards (am335x-evm, evm-sk, icev2) do not boot with uboot 2023.04. This error is returned, with LOG_LEVEL=5: No USB device found USB ether init failed initcall sequence 8ffdbba4 failed at call 808024d9 (err=-19) ### ERROR ### Please RESET the board ### This error is also returned with usb0 as 'otg'.
Julien Panis
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