linux-kernel - [PATCH 13/15] hwmon, fam15h_power: add documentation for previous TDP reporting

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Message-ID: <1440662866-28716-14-git-send-email-ray.huang@amd.com>
Date:	Thu, 27 Aug 2015 16:07:44 +0800
From:	Huang Rui <ray.huang@....com>
To:	Borislav Petkov <bp@...e.de>, Jean Delvare <jdelvare@...e.de>,
	"Guenter Roeck" <linux@...ck-us.net>,
	Andy Lutomirski <luto@...capital.net>,
	"Andreas Herrmann" <herrmann.der.user@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...nel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <lenb@...nel.org>,
	John Stultz <john.stultz@...aro.org>,
	Frédéric Weisbecker <fweisbec@...il.com>
CC:	<lm-sensors@...sensors.org>, <linux-kernel@...r.kernel.org>,
	<x86@...nel.org>,
	Andreas Herrmann <herrmann.der.user@...glemail.com>,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	Borislav Petkov <bp@...en8.de>,
	Fengguang Wu <fengguang.wu@...el.com>,
	Aaron Lu <aaron.lu@...el.com>, Tony Li <tony.li@....com>,
	Huang Rui <ray.huang@....com>
Subject: [PATCH 13/15] hwmon, fam15h_power: add documentation for previous TDP reporting

This patch adds description to explain the TDP reporting mechanism of
fam15h_power driver.

Signed-off-by: Huang Rui <ray.huang@....com>
---
 Documentation/hwmon/fam15h_power | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Documentation/hwmon/fam15h_power b/Documentation/hwmon/fam15h_power
index e2b1b69..42bf04e 100644
--- a/Documentation/hwmon/fam15h_power
+++ b/Documentation/hwmon/fam15h_power
@@ -10,14 +10,22 @@ Supported chips:
   Datasheets:
   BIOS and Kernel Developer's Guide (BKDG) For AMD Family 15h Processors
   BIOS and Kernel Developer's Guide (BKDG) For AMD Family 16h Processors
+  AMD64 Architecture Programmer's Manual Volume 2: System Programming
 
 Author: Andreas Herrmann <herrmann.der.user@...glemail.com>
 
 Description
 -----------
 
+1) Processor TDP (Thermal design power)
+
+Given a fixed frequency and voltage, the power consumption of a
+processor varies based on the workload being executed. Derated power
+is the power consumed when running a specific application. Thermal
+design power (TDP) is an example of derated power.
+
 This driver permits reading of registers providing power information
-of AMD Family 15h and 16h processors.
+of AMD Family 15h and 16h processors via TDP algorithm.
 
 For AMD Family 15h and 16h processors the following power values can
 be calculated using different processor northbridge function
-- 
1.9.1

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