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authorGuenter Roeck <linux@roeck-us.net>2015-08-17 07:21:43 -0700
committerGuenter Roeck <linux@roeck-us.net>2015-08-17 16:36:00 -0700
commit228b687d9e20f367e4d5ea8723e3abbf0892db61 (patch)
tree60b86be18f02776b10abb1cb71db3414aa25bbfa /Documentation
parenthwmon: (ltc2978) Add support for LTC2980 and LTM2987 (diff)
downloadlinux-dev-228b687d9e20f367e4d5ea8723e3abbf0892db61.tar.xz
linux-dev-228b687d9e20f367e4d5ea8723e3abbf0892db61.zip
hwmon: (ltc2978) Add support for LTC3886
LTC3886 is a is a dual PolyPhase DC/DC synchronous step-down switching regulator controller. It is mostly command compatible to LTC3883, but supports two phases instead of one. Suggested-by: Michael Jones <mike@proclivis.com> Tested-by: Michael Jones <mike@proclivis.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to '')
-rw-r--r--Documentation/devicetree/bindings/hwmon/ltc2978.txt3
-rw-r--r--Documentation/hwmon/ltc297823
2 files changed, 16 insertions, 10 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/ltc2978.txt b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
index 5dc2691ccf08..a7afbf60bb9c 100644
--- a/Documentation/devicetree/bindings/hwmon/ltc2978.txt
+++ b/Documentation/devicetree/bindings/hwmon/ltc2978.txt
@@ -10,6 +10,7 @@ Required properties:
* "lltc,ltc3880"
* "lltc,ltc3882"
* "lltc,ltc3883"
+ * "lltc,ltc3886"
* "lltc,ltc3887"
* "lltc,ltm2987"
* "lltc,ltm4676"
@@ -25,7 +26,7 @@ Valid names of regulators depend on number of supplies supported per device:
* ltc2974, ltc2975 : vout0 - vout3
* ltc2977, ltc2980, ltm2987 : vout0 - vout7
* ltc2978 : vout0 - vout7
- * ltc3880, ltc3882 : vout0 - vout1
+ * ltc3880, ltc3882, ltc3886 : vout0 - vout1
* ltc3883 : vout0
* ltm4676 : vout0 - vout1
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index 158355398798..f997aa53eb95 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -35,6 +35,10 @@ Supported chips:
Prefix: 'ltc3883'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc3883
+ * Linear Technology LTC3886
+ Prefix: 'ltc3886'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc3886
* Linear Technology LTC3887
Prefix: 'ltc3887'
Addresses scanned: -
@@ -60,8 +64,8 @@ LTC2977 is a pin compatible replacement for LTC2978.
LTC2980 is a 16-channel Power System Manager, consisting of two LTC2977
in a single die. The chip is instantiated and reported as two separate chips
on two different I2C bus addresses.
-LTC3880, LTC3882, and LTC3887 are dual output poly-phase step-down DC/DC
-controllers.
+LTC3880, LTC3882, LTC3886, and LTC3887 are dual output poly-phase step-down
+DC/DC controllers.
LTC3883 is a single phase step-down DC/DC controller.
LTM2987 is a 16-channel Power System Manager with two LTC2977 plus
additional components on a single die. The chip is instantiated and reported
@@ -113,7 +117,7 @@ in[N]_label "vout[1-8]".
LTC2974, LTC2975: N=2-5
LTC2977, LTC2980, LTM2987: N=2-9
LTC2978: N=2-9
- LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
+ LTC3880, LTC3882, LTC23886 LTC3887, LTM4676: N=2-3
LTC3883: N=2
in[N]_input Measured output voltage.
in[N]_min Minimum output voltage.
@@ -161,29 +165,30 @@ temp[N]_highest Highest measured temperature. Not supported for chip
temp[N]_reset_history Reset temperature history. Not supported for chip
temperature sensor on LTC2974 and LTC2975.
-power1_label "pin". LTC3883 only.
+power1_label "pin". LTC3883 and LTC3886 only.
power1_input Measured input power.
power[N]_label "pout[1-4]".
LTC2974, LTC2975: N=1-4
LTC2977, LTC2980, LTM2987: Not supported
LTC2978: Not supported
- LTC3880, LTC3882, LTC3887, LTM4676: N=1-2
+ LTC3880, LTC3882, LTC3886, LTC3887, LTM4676: N=1-2
LTC3883: N=2
power[N]_input Measured output power.
-curr1_label "iin". LTC3880, LTC3883, LTC3887, and LTM4676 only.
+curr1_label "iin". LTC3880, LTC3883, LTC3886, LTC3887, and LTM4676
+ only.
curr1_input Measured input current.
curr1_max Maximum input current.
curr1_max_alarm Input current high alarm.
-curr1_highest Highest input current. LTC3883 only.
-curr1_reset_history Reset input current history. LTC3883 only.
+curr1_highest Highest input current. LTC3883 and LTC3886 only.
+curr1_reset_history Reset input current history. LTC3883 and LTC3886 only.
curr[N]_label "iout[1-4]".
LTC2974, LTC2975: N=1-4
LTC2977, LTC2980, LTM2987: not supported
LTC2978: not supported
- LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
+ LTC3880, LTC3882, LTC3886, LTC3887, LTM4676: N=2-3
LTC3883: N=2
curr[N]_input Measured output current.
curr[N]_max Maximum output current.