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Re: [PATCH] hw/arm: ast2400/ast2500: Wire up EHCI controllers

From: Cédric Le Goater
Subject: Re: [PATCH] hw/arm: ast2400/ast2500: Wire up EHCI controllers
Date: Fri, 7 Feb 2020 14:05:31 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1

On 2/7/20 1:58 PM, Guenter Roeck wrote:
> On 2/7/20 12:16 AM, Cédric Le Goater wrote:
>> On 2/6/20 7:34 PM, Guenter Roeck wrote:
>>> Initialize EHCI controllers on AST2400 and AST2500 using the existing
>>> TYPE_PLATFORM_EHCI. After this change, booting ast2500-evb into Linux
>>> successfully instantiates a USB interface.
>>> ehci-platform 1e6a3000.usb: EHCI Host Controller
>>> ehci-platform 1e6a3000.usb: new USB bus registered, assigned bus number 1
>>> ehci-platform 1e6a3000.usb: irq 21, io mem 0x1e6a3000
>>> ehci-platform 1e6a3000.usb: USB 2.0 started, EHCI 1.00
>>> usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 
>>> 5.05
>>> usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
>>> usb usb1: Product: EHCI Host Controller
>> Cool. Have you tried to plug any devices ?
> Yes, booting from USB drive works just fine. I already added it to my
> test suite at kerneltests.org.
>>> Signed-off-by: Guenter Roeck <address@hidden>
>> This looks good. Could you add the AST2600 also ?
> I thought about that, but how would I test it ? None of the ast2600
> systems in the Linux kernel enables it. The devicetree include file for
> ast2600 doesn't even have an entry for it. I could cook something up,
> but that would not reflect real hardware.

This is true. I suppose we could activate EHCI on the ast2600 evb. 

Anyhow, let's move on. 

Reviewed-by: Cédric Le Goater <address@hidden>



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