From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m12-16.163.com (m12-16.163.com [220.181.12.16]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C8E0323CB for ; Thu, 19 May 2022 10:21:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=Message-ID:Date:MIME-Version:Subject:From; bh=FZ3hy egvo2S44gZY7fZKV/hVLJK/8ShMe+XuaT4PYxc=; b=dxl60OA1T6jte5C/lcC2p G/JraAB2FkY3J+YMjw76lediE6XrGrQUz+X5TwvvviQm5qFJV+7zkiMje1iNUS99 5yO0O+0qch0kPhXkFgedPGrNcQsb+JcVAL4wPx3mI5tG5xkdtjBHCVfKI8bYIjps glABlVo6Mna6eQwC9OO4pc= Received: from [192.168.3.103] (unknown [218.201.129.20]) by smtp12 (Coremail) with SMTP id EMCowABHHpAxFoZiI0+HAQ--.1426S2; Thu, 19 May 2022 18:04:35 +0800 (CST) Message-ID: <264cb004-677a-13df-cc68-676ef3c2e7d8@163.com> Date: Thu, 19 May 2022 18:04:33 +0800 Precedence: bulk X-Mailing-List: linux-sunxi@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.9.0 Subject: Re: [PATCH v4 0/2] ARM: sun8i-r40: Enable usb otg support Content-Language: en-US To: linux-sunxi@lists.linux.dev Cc: Andre Przywara , Evgeny Boger , Rob Herring , Krzysztof Kozlowski , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20220518101706.26869-1-qianfanguijin@163.com> From: qianfan In-Reply-To: <20220518101706.26869-1-qianfanguijin@163.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID:EMCowABHHpAxFoZiI0+HAQ--.1426S2 X-Coremail-Antispam: 1Uf129KBjvJXoWxCw1UGr45urW7uF48Gw1DAwb_yoW5urWDpF W7XrZ3Gw1kt343AFW3WFWUXa1fA3yrZ3yUJrn3tFy8Ar43ur4DA3ZrKrZ8KasrWr17Zw47 Kwn5Jrn7Krn0gF7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jONVkUUUUU= X-Originating-IP: [218.201.129.20] X-CM-SenderInfo: htld0w5dqj3xxmlqqiywtou0bp/1tbiXBMG7VXl29+6cQAAsb 在 2022/5/18 18:17, qianfanguijin@163.com 写道: > From: qianfan Zhao > > History: > ======= > > v4(2022-05-18): > - Enable both musb and OHCI/EHCI support > > Tests: > ====== > > All test cases were tested on bananapi-m2-ultra. > > 1. USB DEVICE(ping test) > > Enable usb gadget rndis network, ping m2u on ubuntu host: > > ➜ ~ ping 192.168.200.2 > PING 192.168.200.2 (192.168.200.2) 56(84) bytes of data. > 64 bytes from 192.168.200.2: icmp_seq=1 ttl=64 time=0.544 ms > 64 bytes from 192.168.200.2: icmp_seq=2 ttl=64 time=0.269 ms > 64 bytes from 192.168.200.2: icmp_seq=3 ttl=64 time=0.300 ms > 64 bytes from 192.168.200.2: icmp_seq=4 ttl=64 time=0.295 ms > 64 bytes from 192.168.200.2: icmp_seq=5 ttl=64 time=0.283 ms > 64 bytes from 192.168.200.2: icmp_seq=6 ttl=64 time=0.226 ms > 64 bytes from 192.168.200.2: icmp_seq=7 ttl=64 time=0.246 ms > 64 bytes from 192.168.200.2: icmp_seq=8 ttl=64 time=0.204 ms > 64 bytes from 192.168.200.2: icmp_seq=9 ttl=64 time=0.302 ms > 64 bytes from 192.168.200.2: icmp_seq=10 ttl=64 time=0.249 ms > 64 bytes from 192.168.200.2: icmp_seq=11 ttl=64 time=0.459 ms > 64 bytes from 192.168.200.2: icmp_seq=12 ttl=64 time=0.232 ms > 64 bytes from 192.168.200.2: icmp_seq=13 ttl=64 time=0.275 ms > 64 bytes from 192.168.200.2: icmp_seq=14 ttl=64 time=0.243 ms > > 2. USB HOST(OHCI) > > Connect an usb serial port on OTG port, nex t is the kernel log: > > [ 27.824137] usb 2-1: new full-speed USB device number 2 using ohci-platform > [ 28.865504] cdc_acm 2-1:1.0: ttyACM0: USB ACM device > [ 29.565509] cdc_acm 2-1:1.2: ttyACM1: USB ACM device > > 3. USB HOST(EHCI) > > Connect an usb storage on OTG port, next is the kernel log: > > [ 17.754147] usb 1-1: new high-speed USB device number 2 using ehci-platform > [ 17.955995] usb-storage 1-1:1.0: USB Mass Storage device detected > [ 18.024497] scsi host1: usb-storage 1-1:1.0 > [ 19.035091] scsi 1:0:0:0: Direct-Access General USB Flash Disk 1.0 PQ: 0 ANSI: 2 > [ 19.049717] sd 1:0:0:0: [sda] 7831552 512-byte logical blocks: (4.01 GB/3.73 GiB) > [ 19.060873] sd 1:0:0:0: [sda] Write Protect is off > [ 19.071018] sd 1:0:0:0: [sda] No Caching mode page found > [ 19.076437] sd 1:0:0:0: [sda] Assuming drive cache: write through > [ 19.093566] sda: sda1 > [ 19.103492] sd 1:0:0:0: [sda] Attached SCSI removable disk > > issues: > ======= > > The system power often turned off when I plugged an usb device into the OTG port. > It's not clear why. It is not caused by software. According to the schematic of M2U, there is a 100uF capacitor on the USBVBUS, but noting on ACIN. The board is powered by ACIN when I test usb otg, plugged an usb storage into the otg port, USB0 enter host mode and will enable the USBVBUS power supply through N_VBUSEN. At this time due to the limits of ACIN, the input voltage dropped and AXP enter shutdown protection state. This problem was sloved when I mounted a large capacitor on ACIN. Both usb device and host stack can work fine now. > > qianfan Zhao (2): > ARM: dts: sun8i-r40: Add USB0_OTG/HOST support > ARM: dts: bananapi-m2-ultra: Enable USB0_OTG and HOST support > > .../boot/dts/sun8i-r40-bananapi-m2-ultra.dts | 39 +++++++++++++++++++ > arch/arm/boot/dts/sun8i-r40.dtsi | 34 ++++++++++++++++ > 2 files changed, 73 insertions(+) >