lkml.org 
[lkml]   [2013]   [Jul]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v3 0/2] Enable lm90 in Tegra30 and Tegra114.
On 07/17/2013 04:23 PM, Mikko Perttunen wrote:
> On 07/17/2013 11:17 AM, Wei Ni wrote:
>> On 07/16/2013 07:14 PM, Wei Ni wrote:
>>> On 07/16/2013 01:13 AM, Stephen Warren wrote:
>>>> On 07/15/2013 10:48 AM, Stephen Warren wrote:
>>>>> On 07/12/2013 01:49 AM, Wei Ni wrote:
>>>>>> Enable thermal sensor lm90 for Tegra30 Cardhu and Tegra114 Dalmore.
>>>>>
>>>>> I have applied the series to Tegra's for-3.12/dt branch.
>>>>
>>>> Actually, I see the following on Dalmore (although Cardhu works):
>>>>
>>>> [ 29.448539] lm90 0-004c: Register 0x4 read failed (-121)
>>>> [ 29.453930] lm90 0-004c: Failed to read convrate register!
>>>> [ 29.460034] lm90 0-004c: Register 0x3 read failed (-121)
>>>> [ 29.465408] lm90 0-004c: Initialization failed!
>>>>
>>>> So, there's something wrong here, and I've dropped the patch for
>>>> Dalmore. Does this patch actually work for you?
>>>>
>>> I test it with the Chrome u-boot, the lm90 works fine.
>>> But today, if I tried to use the uboot from
>>> git://git.denx.de/u-boot-tegra.git, I can repo your errors, it seems the
>>> i2c can't work, the lm90 driver read register failed.
>>> I traced it, but can't find the root cause yet.
>>
>> Hi, Stephen
>> I found the root cause.
>> In the Chrome u-boot, it will turn on the regulator for the lm90, but in
>> the upstream u-boot, it didn't do it.
>> I think this regulator should be handled in the kernel driver, but it
>> seems the regulator palmas tps65913 didn't be supported on the dalmore yet.
>> So may be we have to wait the palmas ready on dalmore.
>
> A patch to enable tps65913 on dalmore has already been posted a couple
> of days
> ago by Laxman Dewangan, so this shouldn't be too problematic.

Oh, great, I will look it.

>
>>
>> Do you have any suggestions?
>>
>> Thanks.
>> Wei.
>>
>>> --
>>> To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
>>> the body of a message to majordomo@vger.kernel.org
>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>



\
 
 \ /
  Last update: 2013-07-17 11:42    [W:1.762 / U:0.204 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site