linux-kernel - Re: [PATCH v4 0/2] ARM: sun8i-r40: Enable usb otg support

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Message-ID: <a50307f826e8e5f4218bd2bfde23add8a26af0dc.camel@aosc.io>
Date:   Mon, 23 May 2022 21:11:29 +0800
From:   Icenowy Zheng <icenowy@...c.io>
To:     qianfanguijin@....com, linux-sunxi@...ts.linux.dev
Cc:     Andre Przywara <andre.przywara@....com>,
        Evgeny Boger <boger@...enboard.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Samuel Holland <samuel@...lland.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/2] ARM: sun8i-r40: Enable usb otg support

在 2022-05-18星期三的 18:17 +0800，qianfanguijin@....com写道：
> From: qianfan Zhao <qianfanguijin@....com>
> 
> 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:

Interestingly musb previous totally fail when I initially work on R40.
Maybe some phy-sun4i-usb patches fixed it by accident?

> 
> ➜  ~ 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.
> 
> 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(+)
>