From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C116FC169C4 for ; Tue, 29 Jan 2019 09:12:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8A45820857 for ; Tue, 29 Jan 2019 09:12:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727724AbfA2JMc (ORCPT ); Tue, 29 Jan 2019 04:12:32 -0500 Received: from mout.kundenserver.de ([212.227.126.134]:60489 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725298AbfA2JMc (ORCPT ); Tue, 29 Jan 2019 04:12:32 -0500 Received: from [192.168.178.52] ([109.104.39.36]) by mrelayeu.kundenserver.de (mreue011 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M2w4S-1grhlL3RJU-003Nqv; Tue, 29 Jan 2019 10:12:23 +0100 From: Stefan Wahren Subject: mt76x0: probing issues on Raspberry Pi To: Felix Fietkau , Lorenzo Bianconi , Stanislaw Gruszka Cc: linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org Message-ID: Date: Tue, 29 Jan 2019 10:12:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US X-Provags-ID: V03:K1:azYi6qDu5qeyJ2zSlDXTR+SvVFOmKTKlz8LFdyswrOqdeSr7eOR 1lQDnrnS33fJOLOStb1qqSSiHbkKIpubJhs9or3WS/HK57HYs7EyUiyGM9d8XrVBK6Ue7Gq MKNz+c9uEdwGdgApC5G6ygeEtVd+oO3Vb+6+wwKUIv0PCfVIwcwAW8ixqJE0Jr5diKv2czG 82hXnPjHzFhK5u3lPoVyA== X-UI-Out-Filterresults: notjunk:1;V03:K0:lV+PrADk2dk=:YOeWWDAsv7VyvLbvRfcBMi jzclmHICE0WI9p6SYm23i3cGqRYN77DWl9yEfEue3WS2cUx0bVqKTdak7IOnbLQUcvDHvOZ3s 7VFYpQ36D9YCL1Ytxh6+2RpuAV4WddQ46GZofgm77dD3tRfNjz1yy3lSpZWdep8Nb9ZRsNV3v CQJUpB9Kdm1YtP7IfxiYyNQYm7d5xw9CnnExvyIcxMFDwi9VhYtTP3owtgDLdVME7dU5msNLz PKaLOJRq6VfipYJmYBBU0ISP6M8Dsb8SCr6PhfQrMDy0Dvn3G4l3f8Y3aAO1zZwc3PpzI3CNc PjplM7QDhfJbvQVIkza5PrSZ0WaXQZNsjIVTPaPDBhC/7FuWMdBFB3J7VKOX6cGlRrx6MhxJg RSizPKE4baZ7qKHMuixmhdk0Ne7cpSiFsG+oms66vbHFFt5If1oMsyMxHYDq10v8Wep4sv8FW Nju6Qnr7Pa8Vind52QrJ0PjYOPNIKwsCfYPk2QxHQrZOTUyNt95/1++aj6oEKdp+Kxu4CSNgh dFPZ/fAA8DKNbGGzsDHahBy8wmXGgI8CH0G0YRWKGSd6OKSTic4ex3HL/NaCKiIeeJ54cbcC8 6DfjKlKsl5n3q9dVxugCwt7VaLKYCaiH7Kjp725m/A4NSGqidx1LvL0514mhbnNpRZnX27u// enEtE60nILn/w37vk+XMoRh/FTWX1zgrRYstGzdjcBEWarGiyqHJrEuU4pBhSGifkkkntn6ct F3Twu08deiPf5gPEKvyonytoD++RRgj0uJ1WK9Kd9PCPPlkuU3hEdjFEals= Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Hi, recently i discovered a bug report about probing issues of the mt76x0 driver using T2U Archer on the Raspberry Pi 3 B (Linux 4.19.14, Aarch64) [1]. Also i tried a T2UH Archer on my Raspberry Pi 3 B+ with a recent Linux-Next and i'm getting the following output: Vendor request req:07 off:0404 failed:-110 ... instead of successful probe. The author of the former bug report provided the "lsusb -v" on a working system: Bus 001 Device 009: ID 148f:761a Ralink Technology, Corp. MT7610U ("Archer T2U" 2.4G+5G WLAN Adapter Device Descriptor:   bLength                18   bDescriptorType         1   bcdUSB               2.01   bDeviceClass            0   bDeviceSubClass         0   bDeviceProtocol         0   bMaxPacketSize0        64   idVendor           0x148f Ralink Technology, Corp.   idProduct          0x761a MT7610U ("Archer T2U" 2.4G+5G WLAN Adapter   bcdDevice            1.00   iManufacturer           1 MediaTek   iProduct                2 WiFi   iSerial                 3 1.0   bNumConfigurations      1   Configuration Descriptor:     bLength                 9     bDescriptorType         2     wTotalLength       0x004a     bNumInterfaces          1     bConfigurationValue     1     iConfiguration          0     bmAttributes         0xa0       (Bus Powered)       Remote Wakeup     MaxPower              160mA     Interface Descriptor:       bLength                 9       bDescriptorType         4       bInterfaceNumber        0       bAlternateSetting       0       bNumEndpoints           8       bInterfaceClass       255 Vendor Specific Class       bInterfaceSubClass      2       bInterfaceProtocol    255       iInterface              0       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x84  EP 4 IN         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x85  EP 5 IN         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x08  EP 8 OUT         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x04  EP 4 OUT         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x05  EP 5 OUT         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x06  EP 6 OUT         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x07  EP 7 OUT         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1       Endpoint Descriptor:         bLength                 7         bDescriptorType         5         bEndpointAddress     0x09  EP 9 OUT         bmAttributes            2           Transfer Type            Bulk           Synch Type               None           Usage Type               Data         wMaxPacketSize     0x0200  1x 512 bytes         bInterval               1 Binary Object Store Descriptor:   bLength                 5   bDescriptorType        15   wTotalLength       0x000c   bNumDeviceCaps          1   USB 2.0 Extension Device Capability:     bLength                 7     bDescriptorType        16     bDevCapabilityType      2     bmAttributes   0x00000002       HIRD Link Power Management (LPM) Supported can't get debug descriptor: Resource temporarily unavailable Device Status:     0x0000   (Bus Powered) The BCM2835 on the Raspberry Pi only have 8 EP. So i suspect that the amount of EP is the problem here. Is it possible to reduce them in the mt76x0 driver? [1] - https://github.com/raspberrypi/linux/issues/2817