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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>
This commit is contained in:
Guenter Roeck
parent
52aae6af71
commit
228b687d9e
@ -10,6 +10,7 @@ Required properties:
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* "lltc,ltc3880"
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* "lltc,ltc3882"
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* "lltc,ltc3883"
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* "lltc,ltc3886"
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* "lltc,ltc3887"
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* "lltc,ltm2987"
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* "lltc,ltm4676"
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@ -25,7 +26,7 @@ Valid names of regulators depend on number of supplies supported per device:
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* ltc2974, ltc2975 : vout0 - vout3
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* ltc2977, ltc2980, ltm2987 : vout0 - vout7
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* ltc2978 : vout0 - vout7
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* ltc3880, ltc3882 : vout0 - vout1
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* ltc3880, ltc3882, ltc3886 : vout0 - vout1
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* ltc3883 : vout0
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* ltm4676 : vout0 - vout1
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@ -35,6 +35,10 @@ Supported chips:
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Prefix: 'ltc3883'
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Addresses scanned: -
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Datasheet: http://www.linear.com/product/ltc3883
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* Linear Technology LTC3886
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Prefix: 'ltc3886'
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Addresses scanned: -
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Datasheet: http://www.linear.com/product/ltc3886
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* Linear Technology LTC3887
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Prefix: 'ltc3887'
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Addresses scanned: -
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@ -60,8 +64,8 @@ LTC2977 is a pin compatible replacement for LTC2978.
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LTC2980 is a 16-channel Power System Manager, consisting of two LTC2977
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in a single die. The chip is instantiated and reported as two separate chips
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on two different I2C bus addresses.
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LTC3880, LTC3882, and LTC3887 are dual output poly-phase step-down DC/DC
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controllers.
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LTC3880, LTC3882, LTC3886, and LTC3887 are dual output poly-phase step-down
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DC/DC controllers.
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LTC3883 is a single phase step-down DC/DC controller.
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LTM2987 is a 16-channel Power System Manager with two LTC2977 plus
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additional components on a single die. The chip is instantiated and reported
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@ -113,7 +117,7 @@ in[N]_label "vout[1-8]".
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LTC2974, LTC2975: N=2-5
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LTC2977, LTC2980, LTM2987: N=2-9
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LTC2978: N=2-9
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LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
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LTC3880, LTC3882, LTC23886 LTC3887, LTM4676: N=2-3
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LTC3883: N=2
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in[N]_input Measured output voltage.
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in[N]_min Minimum output voltage.
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@ -161,29 +165,30 @@ temp[N]_highest Highest measured temperature. Not supported for chip
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temp[N]_reset_history Reset temperature history. Not supported for chip
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temperature sensor on LTC2974 and LTC2975.
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power1_label "pin". LTC3883 only.
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power1_label "pin". LTC3883 and LTC3886 only.
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power1_input Measured input power.
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power[N]_label "pout[1-4]".
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LTC2974, LTC2975: N=1-4
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LTC2977, LTC2980, LTM2987: Not supported
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LTC2978: Not supported
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LTC3880, LTC3882, LTC3887, LTM4676: N=1-2
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LTC3880, LTC3882, LTC3886, LTC3887, LTM4676: N=1-2
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LTC3883: N=2
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power[N]_input Measured output power.
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curr1_label "iin". LTC3880, LTC3883, LTC3887, and LTM4676 only.
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curr1_label "iin". LTC3880, LTC3883, LTC3886, LTC3887, and LTM4676
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only.
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curr1_input Measured input current.
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curr1_max Maximum input current.
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curr1_max_alarm Input current high alarm.
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curr1_highest Highest input current. LTC3883 only.
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curr1_reset_history Reset input current history. LTC3883 only.
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curr1_highest Highest input current. LTC3883 and LTC3886 only.
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curr1_reset_history Reset input current history. LTC3883 and LTC3886 only.
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curr[N]_label "iout[1-4]".
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LTC2974, LTC2975: N=1-4
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LTC2977, LTC2980, LTM2987: not supported
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LTC2978: not supported
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LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
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LTC3880, LTC3882, LTC3886, LTC3887, LTM4676: N=2-3
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LTC3883: N=2
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curr[N]_input Measured output current.
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curr[N]_max Maximum output current.
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@ -53,7 +53,7 @@ config SENSORS_LTC2978
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help
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If you say yes here you get hardware monitoring support for Linear
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Technology LTC2974, LTC2975, LTC2977, LTC2978, LTC2980, LTC3880,
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LTC3883, LTC3887, LTCM2987, and LTM4676.
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LTC3883, LTC3886, LTC3887, LTCM2987, and LTM4676.
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This driver can also be built as a module. If so, the module will
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be called ltc2978.
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@ -25,7 +25,7 @@
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#include "pmbus.h"
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enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
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ltc3883, ltc3887, ltm2987, ltm4676 };
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ltc3883, ltc3886, ltc3887, ltm2987, ltm4676 };
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/* Common for all chips */
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#define LTC2978_MFR_VOUT_PEAK 0xdd
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@ -47,7 +47,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
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#define LTC3880_MFR_CLEAR_PEAKS 0xe3
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#define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4
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/* LTC3883 only */
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/* LTC3883 and LTC3886 only */
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#define LTC3883_MFR_IIN_PEAK 0xe1
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/* LTC2975 only */
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@ -69,6 +69,7 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882,
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#define LTC3882_ID 0x4200
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#define LTC3882_ID_D1 0x4240 /* Dash 1 */
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#define LTC3883_ID 0x4300
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#define LTC3886_ID 0x4600
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#define LTC3887_ID 0x4700
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#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */
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#define LTM2987_ID_B 0x8020
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@ -417,6 +418,7 @@ static const struct i2c_device_id ltc2978_id[] = {
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{"ltc3880", ltc3880},
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{"ltc3882", ltc3882},
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{"ltc3883", ltc3883},
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{"ltc3886", ltc3886},
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{"ltc3887", ltc3887},
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{"ltm2987", ltm2987},
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{"ltm4676", ltm4676},
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@ -485,6 +487,8 @@ static int ltc2978_get_id(struct i2c_client *client)
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return ltc3882;
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else if (chip_id == LTC3883_ID)
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return ltc3883;
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else if (chip_id == LTC3886_ID)
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return ltc3886;
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else if (chip_id == LTC3887_ID)
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return ltc3887;
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else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B)
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@ -624,6 +628,21 @@ static int ltc2978_probe(struct i2c_client *client,
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| PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
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| PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
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break;
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case ltc3886:
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data->features |= FEAT_CLEAR_PEAKS;
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info->read_word_data = ltc3883_read_word_data;
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info->pages = LTC3880_NUM_PAGES;
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info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN
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| PMBUS_HAVE_STATUS_INPUT
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| PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
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| PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP
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| PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP;
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info->func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT
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| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT
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| PMBUS_HAVE_POUT
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| PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP;
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break;
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default:
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return -ENODEV;
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}
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@ -650,6 +669,7 @@ static const struct of_device_id ltc2978_of_match[] = {
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{ .compatible = "lltc,ltc3880" },
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{ .compatible = "lltc,ltc3882" },
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{ .compatible = "lltc,ltc3883" },
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{ .compatible = "lltc,ltc3886" },
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{ .compatible = "lltc,ltc3887" },
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{ .compatible = "lltc,ltm2987" },
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{ .compatible = "lltc,ltm4676" },
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