[PATCH] ARM: multi_v7_defconfig: major refresh

[Sachin Kamat]

On Fri, Aug 1, 2014 at 12:14 PM, Sachin Kamat <spk.linux at gmail.com> wrote:
> On Thu, Jul 31, 2014 at 11:56 AM, Sachin Kamat <spk.linux at gmail.com> wrote:
>> On Thu, Jul 31, 2014 at 11:37 AM, Tushar Behera <trblinux at gmail.com> wrote:
>>> On Wed, Jul 23, 2014 at 1:58 AM, Olof Johansson <olof at lixom.net> wrote:
>>>> On Tue, Jul 22, 2014 at 11:36 AM, Arnd Bergmann <arnd at arndb.de> wrote:
>>>>> On Tuesday 22 July 2014 11:01:10 Olof Johansson wrote:
>>>>>> This is a major refresh of the multi_v7_defconfig:
>>>>>>
>>>>>> - Bring over a bunch of Samsung drivers to make ODROID-U3 and Chromebooks usable
>>>>>>  * Enable big.LITTLE
>>>>>>  * MCPM
>>>>>>  * CYAPA touchpad
>>>>>>  * Samsung-related MTD/regulator/clk/pinmux drivers
>>>>>>  * Add some of the CrOS EC drivers
>>>>>> - Turn on TPM, HW_RANDOM
>>>>>> - OMAP_USB3 -> TI_PIPE3 option rename
>>>>>> - Enable MCPM/b.L for VEXPRESS
>>>>>> - Add new CONFIG_MTD_SPI_NOR since it otherwise masks off SPI NOR drivers
>>>>>> - CONFIG_LOGO, because penguins.
>>>>>>
>>>>>> I took care to keep the new options that have been added for whose the
>>>>>> drivers are not yet in our for-next branch. This was pretty awkward so
>>>>>> we should sort out how to handle those better in the future.
>>>>>
>>>>> Since you've already done all those, how about enabling THUMB2_KERNEL?
>>>>> For the multi_v7_defconfig, it should actually give some benefits,
>>>>> since it's rather large, and it would be good to have some more testing
>>>>> with this option enabled.
>>>>>
>>>>> I guess the first step would be to enable it and just see if your
>>>>> boot farm survives the change.
>>>>
>>>> Good point, I'll definitely give that a go once the current issues are resolved.
>>>>
>>>> Which are: These changes make 5250-based machines (snow and arndale)
>>>> break. Lots of i2c timeouts on SATA and hdmi-phy. Looks like arndale
>>>> might be missing pinctrl setups for it?
>>
>> i2c timeout issue should have been fixed with the following patch:
>> i2c: i2c-s3c2410: Drop class based scanning to improve bootup time
>> (commit id: 6031d3dfc73b49bede540872e51a70ee0b6786d4) which is
>> available on Wolfram's I2C tree (should be part of linux-next too). Also
>> I do not see I2C_S3C2410 enabled in the config.
>> I do not have access to h/w today. I can verify and check tomorrow or
>> somebody could test it in the meantime with the above suggestions?
>
> Olof,
> Tested your multi_v7_defconfig patch on top of latest linux-next (20140731).
> I did not see any aforementioned i2c issues on 5250 based Snow board. It
> booted fine. However on 5250 based Arndale board, the boot stops at
> the following:
>
> [    1.951863] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> [    1.956937] ehci-pci: EHCI PCI platform driver
> [    1.961392] ehci-exynos: EHCI EXYNOS driver
> [    1.965698] exynos-ehci 12110000.usb: EHCI Host Controller
> [    1.971007] exynos-ehci 12110000.usb: new USB bus registered,
> assigned bus number 1
> [    1.981593] exynos-ehci 12110000.usb: can't setup: -110
> [    1.985361] exynos-ehci 12110000.usb: USB bus 1 deregistered
> [    1.991001] exynos-ehci 12110000.usb: Failed to add USB HCD
> [    1.996569] exynos-ehci: probe of 12110000.usb failed with error -110
> [    2.003041] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> [    2.009149] ohci-exynos: OHCI EXYNOS driver
> [    2.013457] exynos-ohci 12120000.usb: USB Host Controller
> [    2.018702] exynos-ohci 12120000.usb: new USB bus registered,
> assigned bus number 1
>
> Boots well with exynos_defconfig though. Probably some conflict with
> other config options?
> I couldn't find out as I am busy with some other activity.

The following patch from Vivek fixes the above mentioned USB issue.
https://lkml.org/lkml/2014/8/5/142

-- 
Regards,
Sachin.