Documentation/hwmon/it87.rst | 26 +++++++++++---- drivers/hwmon/Kconfig | 4 +-- drivers/hwmon/it87.c | 61 +++++++++++++++++++++++++++++++++++- 3 files changed, 82 insertions(+), 9 deletions(-)
Add support for the ITE IT8689E Super I/O chip. The IT8689E supports
newer autopwm, 12mV ADC, 16-bit fans, six fans, six PWM channels,
PWM frequency 2, six temperature inputs, AVCC3, temperature offset,
and fan on/off control.
Give it8689 its own GPIO configuration block in it87_find() rather
than sharing the it8620/it8628 block. The shared block reads
IT87_SIO_PINX2_REG and either marks IN3 as internal AVCC or skips
IN9. Because it8689 declares FEAT_AVCC3, IN9 is already marked as
always-internal before the GPIO block is reached; applying the PINX2
check would either create duplicate AVCC labels on IN3 and IN9 or
incorrectly skip IN9.
Also update Documentation/hwmon/it87.rst and drivers/hwmon/Kconfig to
document the newly supported chip.
Signed-off-by: Markus Hoffmann <markus@thehoffs.at>
---
Changes in v3:
- Fix AVCC/PINX2 conflict: give it8689 its own GPIO block instead of
sharing the it8620/it8628 block. The shared block applies an
IT87_SIO_PINX2_REG check that is incompatible with FEAT_AVCC3:
it either creates duplicate AVCC labels on IN3 and IN9, or skips
IN9 while its label remains visible. it8622 (also FEAT_AVCC3) is
handled the same way for the same reason.
- Add FEAT_TEMP_OFFSET: verified on hardware, temp[1-3]_offset sysfs
attributes respond correctly.
- Add FEAT_FANCTL_ONOFF: verified on hardware, writing 0 to
pwm1_enable is accepted.
- Add Documentation/hwmon/it87.rst entry for IT8689E, update the chip
list in the Description section, add IT8689E description paragraph,
and fix the in9 note to also list IT8622E (which also has FEAT_AVCC3).
- Add IT8689E to drivers/hwmon/Kconfig help text.
Changes in v2:
- Add it8689 to the GPIO pin multiplexing checks in it87_find() to
avoid ghost fans and non-functional PWM controls.
Documentation/hwmon/it87.rst | 26 +++++++++++----
drivers/hwmon/Kconfig | 4 +--
drivers/hwmon/it87.c | 61 +++++++++++++++++++++++++++++++++++-
3 files changed, 82 insertions(+), 9 deletions(-)
diff --git a/Documentation/hwmon/it87.rst b/Documentation/hwmon/it87.rst
index 5cef4f265..fc1c90b02 100644
--- a/Documentation/hwmon/it87.rst
+++ b/Documentation/hwmon/it87.rst
@@ -25,6 +25,14 @@ Supported chips:
Datasheet: Not publicly available
+ * IT8689E
+
+ Prefix: 'it8689'
+
+ Addresses scanned: from Super I/O config space (8 I/O ports)
+
+ Datasheet: Not publicly available
+
* IT8705F
Prefix: 'it87'
@@ -228,9 +236,9 @@ Description
-----------
This driver implements support for the IT8603E, IT8620E, IT8623E, IT8628E,
-IT8705F, IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8732F,
-IT8758E, IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E,
-IT8792E/IT8795E, IT87952E and SiS950 chips.
+IT8689E, IT8705F, IT8712F, IT8716F, IT8718F, IT8720F, IT8721F, IT8726F,
+IT8728F, IT8732F, IT8758E, IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F,
+IT8786E, IT8790E, IT8792E/IT8795E, IT87952E and SiS950 chips.
These chips are 'Super I/O chips', supporting floppy disks, infrared ports,
joysticks and other miscellaneous stuff. For hardware monitoring, they
@@ -274,6 +282,9 @@ of the fan is not supported (value 0 of pwmX_enable).
The IT8620E and IT8628E are custom designs, hardware monitoring part is similar
to IT8728F. It only supports 16-bit fan mode. Both chips support up to 6 fans.
+The IT8689E supports newer autopwm, 12mV ADC, 16-bit fans, six fans, six PWM
+channels, PWM frequency 2, six temperature inputs, and AVCC3 (in9).
+
The IT8790E, IT8792E/IT8795E and IT87952E support up to 3 fans. 16-bit fan
mode is always enabled.
@@ -301,12 +312,15 @@ of 0.016 volt. IT8603E, IT8721F/IT8758E and IT8728F can measure between 0 and
2.8 volts with a resolution of 0.0109 volt. The battery voltage in8 does not
have limit registers.
-On the IT8603E, IT8620E, IT8628E, IT8721F/IT8758E, IT8732F, IT8781F, IT8782F,
-and IT8783E/F, some voltage inputs are internal and scaled inside the chip:
+On the IT8603E, IT8620E, IT8628E, IT8689E, IT8721F/IT8758E, IT8732F, IT8781F,
+IT8782F, and IT8783E/F, some voltage inputs are internal and scaled inside the
+chip:
+
* in3 (optional)
* in7 (optional for IT8781F, IT8782F, and IT8783E/F)
* in8 (always)
-* in9 (relevant for IT8603E only)
+* in9 (IT8603E, IT8622E, and IT8689E: always AVCC3; others: optional)
+
The driver handles this transparently so user-space doesn't have to care.
The VID lines (IT8712F/IT8716F/IT8718F/IT8720F) encode the core voltage value:
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 328867242..85e29be93 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -936,8 +936,8 @@ config SENSORS_IT87
If you say yes here you get support for ITE IT8705F, IT8712F, IT8716F,
IT8718F, IT8720F, IT8721F, IT8726F, IT8728F, IT8732F, IT8758E,
IT8771E, IT8772E, IT8781F, IT8782F, IT8783E/F, IT8786E, IT8790E,
- IT8603E, IT8620E, IT8623E, and IT8628E sensor chips, and the SiS950
- clone.
+ IT8603E, IT8620E, IT8623E, IT8628E, and IT8689E sensor chips, and
+ the SiS950 clone.
This driver can also be built as a module. If so, the module
will be called it87.
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 5cfb98a05..5fd310662 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -16,6 +16,7 @@
* IT8622E Super I/O chip w/LPC interface
* IT8623E Super I/O chip w/LPC interface
* IT8628E Super I/O chip w/LPC interface
+ * IT8689E Super I/O chip w/LPC interface
* IT8705F Super I/O chip w/LPC interface
* IT8712F Super I/O chip w/LPC interface
* IT8716F Super I/O chip w/LPC interface
@@ -64,7 +65,7 @@
enum chips { it87, it8712, it8716, it8718, it8720, it8721, it8728, it8732,
it8771, it8772, it8781, it8782, it8783, it8786, it8790,
- it8792, it8603, it8620, it8622, it8628, it87952 };
+ it8792, it8603, it8620, it8622, it8628, it8689, it87952 };
static struct platform_device *it87_pdev[2];
@@ -162,6 +163,7 @@ static inline void superio_exit(int ioreg, bool noexit)
#define IT8622E_DEVID 0x8622
#define IT8623E_DEVID 0x8623
#define IT8628E_DEVID 0x8628
+#define IT8689E_DEVID 0x8689
#define IT87952E_DEVID 0x8695
/* Logical device 4 (Environmental Monitor) registers */
@@ -502,6 +504,15 @@ static const struct it87_devices it87_devices[] = {
| FEAT_SIX_TEMP | FEAT_VIN3_5V | FEAT_FANCTL_ONOFF,
.peci_mask = 0x07,
},
+ [it8689] = {
+ .name = "it8689",
+ .model = "IT8689E",
+ .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS
+ | FEAT_TEMP_OFFSET | FEAT_SIX_FANS | FEAT_IN7_INTERNAL
+ | FEAT_SIX_PWM | FEAT_PWM_FREQ2 | FEAT_SIX_TEMP | FEAT_AVCC3
+ | FEAT_FANCTL_ONOFF,
+ .smbus_bitmap = BIT(1) | BIT(2),
+ },
[it87952] = {
.name = "it87952",
.model = "IT87952E",
@@ -2785,6 +2796,9 @@ static int __init it87_find(int sioaddr, unsigned short *address,
case IT8628E_DEVID:
sio_data->type = it8628;
break;
+ case IT8689E_DEVID:
+ sio_data->type = it8689;
+ break;
case IT87952E_DEVID:
sio_data->type = it87952;
break;
@@ -3000,6 +3014,51 @@ static int __init it87_find(int sioaddr, unsigned short *address,
else
sio_data->skip_in |= BIT(9);
+ sio_data->beep_pin = superio_inb(sioaddr,
+ IT87_SIO_BEEP_PIN_REG) & 0x3f;
+ } else if (sio_data->type == it8689) {
+ int reg;
+
+ superio_select(sioaddr, GPIO);
+
+ /* Check for pwm5 */
+ reg = superio_inb(sioaddr, IT87_SIO_GPIO1_REG);
+ if (reg & BIT(6))
+ sio_data->skip_pwm |= BIT(4);
+
+ /* Check for fan4, fan5 */
+ reg = superio_inb(sioaddr, IT87_SIO_GPIO2_REG);
+ if (!(reg & BIT(5)))
+ sio_data->skip_fan |= BIT(3);
+ if (!(reg & BIT(4)))
+ sio_data->skip_fan |= BIT(4);
+
+ /* Check for pwm3, fan3 */
+ reg = superio_inb(sioaddr, IT87_SIO_GPIO3_REG);
+ if (reg & BIT(6))
+ sio_data->skip_pwm |= BIT(2);
+ if (reg & BIT(7))
+ sio_data->skip_fan |= BIT(2);
+
+ /* Check for pwm4 */
+ reg = superio_inb(sioaddr, IT87_SIO_GPIO4_REG);
+ if (reg & BIT(2))
+ sio_data->skip_pwm |= BIT(3);
+
+ /* Check for pwm2, fan2 */
+ reg = superio_inb(sioaddr, IT87_SIO_GPIO5_REG);
+ if (reg & BIT(1))
+ sio_data->skip_pwm |= BIT(1);
+ if (reg & BIT(2))
+ sio_data->skip_fan |= BIT(1);
+ /* Check for pwm6, fan6 */
+ if (!(reg & BIT(7))) {
+ sio_data->skip_pwm |= BIT(5);
+ sio_data->skip_fan |= BIT(5);
+ }
+
+ /* in9 (AVCC3) is always internal, no PINX2 check needed */
+
sio_data->beep_pin = superio_inb(sioaddr,
IT87_SIO_BEEP_PIN_REG) & 0x3f;
} else if (sio_data->type == it8622) {
--
2.53.0On Sun, Mar 22, 2026 at 10:33:01AM +0000, Markus Hoffmann wrote: > Add support for the ITE IT8689E Super I/O chip. The IT8689E supports > newer autopwm, 12mV ADC, 16-bit fans, six fans, six PWM channels, > PWM frequency 2, six temperature inputs, AVCC3, temperature offset, > and fan on/off control. > > Give it8689 its own GPIO configuration block in it87_find() rather > than sharing the it8620/it8628 block. The shared block reads > IT87_SIO_PINX2_REG and either marks IN3 as internal AVCC or skips > IN9. Because it8689 declares FEAT_AVCC3, IN9 is already marked as > always-internal before the GPIO block is reached; applying the PINX2 > check would either create duplicate AVCC labels on IN3 and IN9 or > incorrectly skip IN9. > > Also update Documentation/hwmon/it87.rst and drivers/hwmon/Kconfig to > document the newly supported chip. > > Signed-off-by: Markus Hoffmann <markus@thehoffs.at> Applied. Thanks, Guenter
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