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Date: Sun, 20 Sep 2009 21:16:20 +0200 From: Jean Delvare <khali@...ux-fr.org> To: Robert Hancock <hancockrwd@...il.com> Cc: linux-kernel <linux-kernel@...r.kernel.org>, lm-sensors@...sensors.org Subject: Re: [lm-sensors] coretemp support for Core i5 CPU Hi Robert, On Sun, 20 Sep 2009 01:47:43 -0600, Robert Hancock wrote: > Trying to load the coretemp driver for CPU temperature monitoring on a > Core i5 750 CPU gives: > > coretemp: Unknown CPU model 1e > coretemp: Unknown CPU model 1e > coretemp: Unknown CPU model 1e > coretemp: Unknown CPU model 1e > > Looks like this model needs to be added to the list in > drivers/hwmon/coretemp.c. Though this doesn't really seem like a very > good approach as we'll keep having to update this driver whenever a new > CPU model gets released. Intel has a CPUID field that indicates if the > thermal sensor is supported: "The processor supports a digital thermal > sensor if CPUID.06H.EAX[0] = 1." We should likely be using this instead > of hard-coded CPU model checks.. Supporting the digital thermal sensor is one thing, but it is totally insufficient. If you look at the coretemp driver, you'll see we need to figure out a number of calibration values which are model-dependent. So we will need to check this part before adding support for new CPU models anyway. -- Jean Delvare http://khali.linux-fr.org/wishlist.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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