linux-kernel - Re: [PATCH] ARM: EXYNOS: Update defconfig for Arndale and Origen board

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Date:	Wed, 29 May 2013 09:29:53 +0530
From:	Tushar Behera <tushar.behera@...aro.org>
To:	Olof Johansson <olof@...om.net>
CC:	Kevin Hilman <khilman@...aro.org>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, kgene.kim@...sung.com,
	dianders@...omium.org, patches@...aro.org
Subject: Re: [PATCH] ARM: EXYNOS: Update defconfig for Arndale and Origen
 board

On 05/29/2013 04:47 AM, Olof Johansson wrote:
> On Tue, May 14, 2013 at 08:37:53AM +0530, Tushar Behera wrote:
>> On 05/14/2013 05:36 AM, Kevin Hilman wrote:
>>> Tushar Behera <tushar.behera@...aro.org> writes:
>>>
>>>> It updates following drivers for EXYNOS based DT platform.
>>>>
>>>> * S5M8767 driver
>>>> * MAX8997 driver
>>>> * MMC SDHCI driver
>>>>
>>>> Signed-off-by: Tushar Behera <tushar.behera@...aro.org>
>>>
>>> I tested this using v3.10-rc1 on Arndale, but still don't get any
>>> support for the wired network.  Do you know if this is a Kconfig issue,
>>> or a missing driver?
>>>
>>> I suspect it may be related to the various "unable to find transceiver
>>> of type USB2 PHY" messages I'm seeing?
>>>
>>
>> Yes, right. The missing USB-PHY components are one of the issues (they
>> were there in linux-next when I last tested).
>>
>> Also, on Arndale board, we need to reset the USB hub during EHCI
>> initialization (a couple of those patches are required, which I am not
>> sure if we would be able to upstream).
>>
>> I am collecting a minimal set of patches that would enable USB and wired
>> network on Arndale with 3.10-rc1 kernel. Once done, I will let you know.
> 
> Hi Tushar,
> 
> Got an update on what these patches are yet?
> 
> 
> -Olof
> 

The patches are at [1]. There are a total of 6 patches on top of
v3.10-rc3. 3 of them (a, b, d) are queued for 3.10-rc4 and another patch
(c) is just a defconfig hack to get Arndale booting. Remaining 2 patches
(e, f) are required to reset the hub during EHCI initialization.

a. ARM: exynos: defconfig update
b. ARM: EXYNOS: Update defconfig for Arndale and Origen board
c. [TEMP] ARM: EXYNOS: Set low-level UART port to 2
d. ARM: dts: Enabling samsung-usb2phy driver for exynos5250
e. usb: ehci-s5p: add the HSIC port initialization
f. ARM: dts: Add USB gpio entries for Arndale board

I am not sure whether such kind of board-specific patches (e, f) are
appreciated in the drivers. But that is all we need to get USB and
Ethernet to work on v3.10-rc3 kernel.

[1] git://git.linaro.org/landing-teams/working/samsung/kernel.git
(upstream/arndale-usb)

-- 
Tushar Behera
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