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Message-Id: <20250110082612.4107571-2-a0282524688@gmail.com>
Date: Fri, 10 Jan 2025 16:26:11 +0800
From: Ming Yu <a0282524688@...il.com>
To: tmyu0@...oton.com,
jdelvare@...e.com,
linux@...ck-us.net,
corbet@....net,
robh@...nel.org,
krzk+dt@...nel.org,
conor+dt@...nel.org
Cc: linux-hwmon@...r.kernel.org,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org,
Ming Yu <a0282524688@...il.com>
Subject: [PATCH v1 1/2] hwmon: (lm90): Add support for NCT7716, NCT7717 and NCT7718
NCT7716 is similar to NCT7717 but has one more address support,
both of them only have a 8 bit resolution local thermal sensor.
NCT7718 has 11 bit resoulution remote thermal sensor.
Signed-off-by: Ming Yu <a0282524688@...il.com>
---
Documentation/hwmon/lm90.rst | 43 +++++++++++++++++++++++
drivers/hwmon/Kconfig | 2 +-
drivers/hwmon/lm90.c | 67 ++++++++++++++++++++++++++++++++----
3 files changed, 105 insertions(+), 7 deletions(-)
diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst
index 23af17a0ab44..a53c82a8c15e 100644
--- a/Documentation/hwmon/lm90.rst
+++ b/Documentation/hwmon/lm90.rst
@@ -365,6 +365,34 @@ Supported chips:
Datasheet: Not publicly available, can be requested from Nuvoton
+ * Nuvoton NCT7716
+
+ Prefix: 'nct7716'
+
+ Addresses scanned: I2C 0x48, 0x49
+
+ Datasheet: Not publicly available, can be requested from Nuvoton
+
+ * Nuvoton NCT7717
+
+ Prefix: 'nct7717'
+
+ Addresses scanned: I2C 0x48
+
+ Datasheet: Publicly available at Nuvoton website
+
+ https://www.nuvoton.com/resource-files/Nuvoton_NCT7717U_Datasheet_V111.pdf
+
+ * Nuvoton NCT7718
+
+ Prefix: 'nct7718'
+
+ Addresses scanned: I2C 04xc
+
+ Datasheet: Publicly available at Nuvoton website
+
+ https://www.nuvoton.com/resource-files/Nuvoton_NCT7718W_Datasheet_V11.pdf
+
* Philips/NXP SA56004X
Prefix: 'sa56004'
@@ -573,6 +601,21 @@ W83L771AWG/ASG
* The AWG and ASG variants only differ in package format.
* Diode ideality factor configuration (remote sensor) at 0xE3
+NCT7716:
+ * 8 bit sensor resolution
+ * Selectable address
+ * Configurable conversion rate
+
+NCT7717:
+ * 8 bit sensor resolution
+ * Configurable conversion rate
+
+NCT7718:
+ * Temperature offset register for remote temperature sensor
+ * 11 bit resolution for remote temperature sensor
+ * Low temperature limits
+ * Configurable conversion rate
+
SA56004X:
* Better local resolution
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index dd376602f3f1..70c4717b37b4 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1517,7 +1517,7 @@ config SENSORS_LM90
MAX6657, MAX6658, MAX6659, MAX6680, MAX6681, MAX6692, MAX6695,
MAX6696,
ON Semiconductor NCT1008, NCT210, NCT72, NCT214, NCT218,
- Winbond/Nuvoton W83L771W/G/AWG/ASG,
+ Winbond/Nuvoton W83L771W/G/AWG/ASG, NCT7716, NCT7717 and NCT7718,
Philips NE1618, SA56004, GMT G781, Texas Instruments TMP451 and TMP461
sensor chips.
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 511d95a0efb3..266998c6fd1e 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -90,6 +90,9 @@
* This driver also supports NE1618 from Philips. It is similar to NE1617
* but supports 11 bit external temperature values.
*
+ * This driver also supports NCT7716, NCT7717 and NCT7718 from Nuvoton.
+ * The NCT7716 is similar to NCT7717 but has one more address support.
+ *
* Since the LM90 was the first chipset supported by this driver, most
* comments will refer to this chipset, but are actually general and
* concern all supported chipsets, unless mentioned otherwise.
@@ -119,13 +122,15 @@
* Address is fully defined internally and cannot be changed except for
* MAX6659, MAX6680 and MAX6681.
* LM86, LM89, LM90, LM99, ADM1032, ADM1032-1, ADT7461, ADT7461A, MAX6649,
- * MAX6657, MAX6658, NCT1008 and W83L771 have address 0x4c.
+ * MAX6657, MAX6658, NCT1008, NCT7718 and W83L771 have address 0x4c.
* ADM1032-2, ADT7461-2, ADT7461A-2, LM89-1, LM99-1, MAX6646, and NCT1008D
* have address 0x4d.
* MAX6647 has address 0x4e.
* MAX6659 can have address 0x4c, 0x4d or 0x4e.
* MAX6654, MAX6680, and MAX6681 can have address 0x18, 0x19, 0x1a, 0x29,
* 0x2a, 0x2b, 0x4c, 0x4d or 0x4e.
+ * NCT7716 can have address 0x48 or 0x49.
+ * NCT7717 has address 0x48.
* SA56004 can have address 0x48 through 0x4F.
*/
@@ -136,7 +141,8 @@ static const unsigned short normal_i2c[] = {
enum chips { adm1023, adm1032, adt7461, adt7461a, adt7481,
g781, lm84, lm90, lm99,
max1617, max6642, max6646, max6648, max6654, max6657, max6659, max6680, max6696,
- nct210, nct72, ne1618, sa56004, tmp451, tmp461, w83l771,
+ nct210, nct72, nct7716, nct7717, nct7718, ne1618, sa56004, tmp451, tmp461,
+ w83l771,
};
/*
@@ -275,6 +281,9 @@ static const struct i2c_device_id lm90_id[] = {
{ "nct214", nct72 },
{ "nct218", nct72 },
{ "nct72", nct72 },
+ { "nct7716", nct7716 },
+ { "nct7717", nct7717 },
+ { "nct7718", nct7718 },
{ "ne1618", ne1618 },
{ "w83l771", w83l771 },
{ "sa56004", sa56004 },
@@ -382,6 +391,18 @@ static const struct of_device_id __maybe_unused lm90_of_match[] = {
.compatible = "onnn,nct72",
.data = (void *)nct72
},
+ {
+ .compatible = "nuvoton,nct7716",
+ .data = (void *)nct7716
+ },
+ {
+ .compatible = "nuvoton,nct7717",
+ .data = (void *)nct7717
+ },
+ {
+ .compatible = "nuvoton,nct7718",
+ .data = (void *)nct7718
+ },
{
.compatible = "winbond,w83l771",
.data = (void *)w83l771
@@ -593,6 +614,26 @@ static const struct lm90_params lm90_params[] = {
.max_convrate = 10,
.resolution = 10,
},
+ [nct7716] = {
+ .flags = LM90_HAVE_ALARMS | LM90_HAVE_CONVRATE,
+ .alert_alarms = 0x40,
+ .resolution = 8,
+ .max_convrate = 8,
+ },
+ [nct7717] = {
+ .flags = LM90_HAVE_ALARMS | LM90_HAVE_CONVRATE,
+ .alert_alarms = 0x40,
+ .resolution = 8,
+ .max_convrate = 8,
+ },
+ [nct7718] = {
+ .flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW | LM90_HAVE_CONVRATE
+ | LM90_HAVE_REMOTE_EXT,
+ .alert_alarms = 0x7c,
+ .resolution = 11,
+ .max_convrate = 8,
+ },
[nct210] = {
.flags = LM90_HAVE_ALARMS | LM90_HAVE_BROKEN_ALERT
| LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_LOW | LM90_HAVE_CONVRATE
@@ -2288,7 +2329,19 @@ static const char *lm90_detect_nuvoton(struct i2c_client *client, int chip_id,
if (config2 < 0)
return NULL;
- if (address == 0x4c && !(config1 & 0x2a) && !(config2 & 0xf8)) {
+ if (address == 0x48 && !(config1 & 0x30) && !(config2 & 0xfe) &&
+ convrate <= 0x08) {
+ if (chip_id == 0x90)
+ name = "nct7717";
+ else if (chip_id == 0x91)
+ name = "nct7716";
+ } else if (address == 0x49 && !(config1 & 0x30) && !(config2 & 0xfe) &&
+ convrate <= 0x08) {
+ name = "nct7716";
+ } else if (address == 0x4c && !(config1 & 0x18) && !(config2 & 0xf8) &&
+ convrate <= 0x08) {
+ name = "nct7718";
+ } else if (address == 0x4c && !(config1 & 0x2a) && !(config2 & 0xf8)) {
if (chip_id == 0x01 && convrate <= 0x09) {
/* W83L771W/G */
name = "w83l771";
@@ -2297,6 +2350,7 @@ static const char *lm90_detect_nuvoton(struct i2c_client *client, int chip_id,
name = "w83l771";
}
}
+
return name;
}
@@ -2484,6 +2538,10 @@ static int lm90_detect(struct i2c_client *client, struct i2c_board_info *info)
name = lm90_detect_maxim(client, common_address, chip_id,
config1, convrate);
break;
+ case 0x50: /* Nuvoton */
+ case 0x5c: /* Winbond/Nuvoton */
+ name = lm90_detect_nuvoton(client, chip_id, config1, convrate);
+ break;
case 0x54: /* ON MC1066, Microchip TC1068, TCM1617 (originally TelCom) */
if (common_address && !(config1 & 0x3f) && !(convrate & 0xf8))
name = "mc1066";
@@ -2491,9 +2549,6 @@ static int lm90_detect(struct i2c_client *client, struct i2c_board_info *info)
case 0x55: /* TI */
name = lm90_detect_ti(client, chip_id, config1, convrate);
break;
- case 0x5c: /* Winbond/Nuvoton */
- name = lm90_detect_nuvoton(client, chip_id, config1, convrate);
- break;
case 0xa1: /* NXP Semiconductor/Philips */
name = lm90_detect_nxp(client, common_address, chip_id, config1, convrate);
break;
--
2.34.1
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