On 07/17/2013 02:17 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. Yes, I agree. (although Laxman's regulator patch caused the SD card to stop working, so that needs to be fixed up, but hopefully it's a simple issue). -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
