[PATCH 2/7] iio: adc: qcom-spmi-adc5-gen3: Add support for QCOM PMIC5 Gen4 ADC
From: Jishnu Prakash
Date: Fri Jul 31 2026 - 14:11:17 EST
PMIC5 Gen4 ADC is similar to PMIC5 Gen3 ADC, with several changes made
for improved performance, mostly at the hardware level.
One significant software change is that ratiometric conversion resolution
has been increased from 14 bits to 16 bits, so the maximum value of
these measurements needs to be updated for Gen4. Add a new scaling
function for thermistor channels which use this type of conversion.
In the latest PMIC arbiter version (v8), there can be up to 4 buses
under the PMIC arbiter and 32 PMICs under each bus. In order to
support communication between ADC on the master PMIC and ADCs on any
of the other PMICs, a field of width 2 bits is added for bus index
and the bits for SID are extended from 4 to 5 bits, in the SID
register. Add support for this.
In addition, it is possible that the master PMIC has ADC of one generation
and it needs to communicate with another PMIC with ADC of a different
generation. Add new DT properties "qcom,adc5-gen3" and "qcom,adc5-gen4",
to distinguish Gen3 channels under a Gen4 master and Gen4 channels
under a Gen3 master respectively, to ensure that their conversions are handled
correctly.
Co-developed-by: Anjelique Melendez <anjelique.melendez@xxxxxxxxxxxxxxxx>
Signed-off-by: Anjelique Melendez <anjelique.melendez@xxxxxxxxxxxxxxxx>
Signed-off-by: Jishnu Prakash <jishnu.prakash@xxxxxxxxxxxxxxxx>
---
drivers/iio/adc/qcom-spmi-adc5-gen3.c | 165 +++++++++++++++++++-------
drivers/iio/adc/qcom-vadc-common.c | 32 +++++
include/linux/iio/adc/qcom-adc5-gen3-common.h | 44 ++++++-
include/linux/iio/adc/qcom-vadc-common.h | 4 +
4 files changed, 195 insertions(+), 50 deletions(-)
diff --git a/drivers/iio/adc/qcom-spmi-adc5-gen3.c b/drivers/iio/adc/qcom-spmi-adc5-gen3.c
index c68c6c5f6aca..810d25b665b1 100644
--- a/drivers/iio/adc/qcom-spmi-adc5-gen3.c
+++ b/drivers/iio/adc/qcom-spmi-adc5-gen3.c
@@ -86,7 +86,9 @@ int adc5_gen3_write(struct adc5_device_data *adc, unsigned int sdam_index,
}
EXPORT_SYMBOL_NS_GPL(adc5_gen3_write, "QCOM_SPMI_ADC5_GEN3");
-static int adc5_gen3_read_voltage_data(struct adc5_chip *adc, u16 *data)
+static int adc5_gen3_read_voltage_data(struct adc5_chip *adc,
+ struct adc5_channel_common_prop *prop,
+ u16 *data)
{
u8 rslt[2];
int ret;
@@ -99,8 +101,10 @@ static int adc5_gen3_read_voltage_data(struct adc5_chip *adc, u16 *data)
*data = get_unaligned_le16(rslt);
if (*data == ADC5_USR_DATA_CHECK) {
- dev_err(adc->dev, "Invalid data:%#x\n", *data);
- return -EINVAL;
+ if (!(prop->generation == ADC5_GEN4 && prop->cal_method == ADC5_RATIOMETRIC_CAL)) {
+ dev_err(adc->dev, "Invalid data:%#x\n", *data);
+ return -EINVAL;
+ }
}
dev_dbg(adc->dev, "voltage raw code:%#x\n", *data);
@@ -131,8 +135,9 @@ static int adc5_gen3_configure(struct adc5_chip *adc,
if (ret)
return ret;
- /* Write SID */
- buf[0] = FIELD_PREP(ADC5_GEN3_SID_MASK, prop->sid);
+ /* Write SID and bus_id*/
+ buf[0] = FIELD_PREP(ADC5_GEN4_BUS_INDEX_MASK, prop->bus_index) |
+ FIELD_PREP(ADC5_GEN4_SID_MASK, prop->sid);
/*
* Use channel 0 by default for immediate conversion and to indicate
@@ -268,7 +273,7 @@ static int adc5_gen3_do_conversion(struct adc5_chip *adc,
return -ETIMEDOUT;
}
- ret = adc5_gen3_read_voltage_data(adc, data_volt);
+ ret = adc5_gen3_read_voltage_data(adc, prop, data_volt);
if (ret)
return ret;
@@ -325,7 +330,7 @@ static int adc5_gen3_fwnode_xlate(struct iio_dev *indio_dev,
int i, v_channel;
for (i = 0; i < adc->nchannels; i++) {
- v_channel = ADC5_GEN3_V_CHAN(adc->chan_props[i].common_props);
+ v_channel = ADC5_GEN4_V_CHAN(adc->chan_props[i].common_props);
if (v_channel == iiospec->args[0])
return i;
}
@@ -351,7 +356,7 @@ static int adc5_gen3_read_raw(struct iio_dev *indio_dev,
return ret;
ret = qcom_adc5_hw_scale(prop->scale_fn_type, prop->prescale,
- adc->data, adc_code_volt, val);
+ prop->data, adc_code_volt, val);
if (ret)
return ret;
@@ -433,15 +438,89 @@ static const struct adc5_channels adc5_gen3_chans_pmic[ADC5_MAX_CHANNEL] = {
SCALE_HW_CALIB_THERM_100K_PU_PM7)
};
+static const struct adc5_channels adc5_gen4_chans_pmic[ADC5_MAX_CHANNEL] = {
+ [ADC5_GEN4_OFFSET_REF] = ADC5_CHAN_VOLT(0,
+ SCALE_HW_CALIB_DEFAULT)
+ [ADC5_GEN4_1P25VREF] = ADC5_CHAN_VOLT(0,
+ SCALE_HW_CALIB_DEFAULT)
+ [ADC5_GEN4_VPH_PWR] = ADC5_CHAN_VOLT(1,
+ SCALE_HW_CALIB_DEFAULT)
+ [ADC5_GEN4_VBAT_SNS_QBG] = ADC5_CHAN_VOLT(1,
+ SCALE_HW_CALIB_DEFAULT)
+ [ADC5_GEN4_DIE_TEMP] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_PMIC_THERM_PM7)
+ [ADC5_GEN4_AMUX1_THM_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX2_THM_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX3_THM_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX4_THM_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX5_THM_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX6_THM_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX1_GPIO_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX2_GPIO_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX3_GPIO_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX4_GPIO_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+ [ADC5_GEN4_AMUX5_GPIO_100K_PU] = ADC5_CHAN_TEMP(0,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4)
+};
+
+static const struct adc5_data adc5_gen3_data_pmic = {
+ .full_scale_code_volt = 0x70e4,
+ .adc_chans = adc5_gen3_chans_pmic,
+ .info = &adc5_gen3_info,
+ .decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX])
+ { 85, 340, 1360 },
+ .hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX])
+ { 15, 100, 200, 300,
+ 400, 500, 600, 700,
+ 1000, 2000, 4000, 8000,
+ 16000, 32000, 64000, 128000 },
+};
+
+static const struct adc5_data adc5_gen4_data_pmic = {
+ .full_scale_code_volt = 0x70e4,
+ .adc_chans = adc5_gen4_chans_pmic,
+ .info = &adc5_gen3_info,
+ .decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX])
+ { 85, 340, 1360 },
+ .hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX])
+ { 15, 100, 200, 300,
+ 400, 500, 600, 700,
+ 1000, 2000, 4000, 8000,
+ 16000, 32000, 64000, 128000 },
+};
+
+static const struct of_device_id adc5_match_table[] = {
+ {
+ .compatible = "qcom,spmi-adc5-gen3",
+ .data = &adc5_gen3_data_pmic,
+ },
+ {
+ .compatible = "qcom,spmi-adc5-gen4",
+ .data = &adc5_gen4_data_pmic,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, adc5_match_table);
+
static int adc5_gen3_get_fw_channel_data(struct adc5_chip *adc,
struct adc5_channel_prop *prop,
struct fwnode_handle *fwnode)
{
const char *name = fwnode_get_name(fwnode);
- const struct adc5_data *data = adc->data;
+ const struct adc5_data *data;
+ u32 chan, value, sid, bus_index;
struct device *dev = adc->dev;
const char *channel_name;
- u32 chan, value, sid;
u32 varr[2];
int ret;
@@ -452,27 +531,46 @@ static int adc5_gen3_get_fw_channel_data(struct adc5_chip *adc,
/*
* Value read from "reg" is virtual channel number
- * virtual channel number = sid << 8 | channel number
+ * virtual channel number = bus index << 13 | sid << 8 | channel number
+ * For ADC5 GEN3 channels, bus index = 0
*/
- sid = FIELD_GET(ADC5_GEN3_VIRTUAL_SID_MASK, chan);
- chan = FIELD_GET(ADC5_GEN3_CHANNEL_MASK, chan);
+ bus_index = FIELD_GET(ADC5_GEN4_V_CHAN_BUS_INDEX_MASK, chan);
+ sid = FIELD_GET(ADC5_GEN4_V_CHAN_SID_MASK, chan);
+ chan = FIELD_GET(ADC5_GEN4_V_CHAN_CHANNEL_MASK, chan);
if (chan >= ADC5_MAX_CHANNEL)
return dev_err_probe(dev, -EINVAL,
"%s invalid channel number %d\n",
name, chan);
+ prop->common_props.bus_index = bus_index;
prop->common_props.channel = chan;
prop->common_props.sid = sid;
- if (!adc->data->adc_chans[chan].info_mask)
+ if (fwnode_property_read_bool(fwnode, "qcom,adc5-gen4")) {
+ prop->common_props.generation = ADC5_GEN4;
+ data = &adc5_gen4_data_pmic;
+ } else if (fwnode_property_read_bool(fwnode, "qcom,adc5-gen3")) {
+ prop->common_props.generation = ADC5_GEN3;
+ data = &adc5_gen3_data_pmic;
+ } else {
+ prop->common_props.generation = (adc->data == &adc5_gen3_data_pmic) ?
+ ADC5_GEN3 : ADC5_GEN4;
+ data = adc->data;
+ }
+ prop->common_props.data = data;
+
+ if (!data->adc_chans[chan].info_mask)
return dev_err_probe(dev, -EINVAL, "Channel %#x not supported\n", chan);
channel_name = name;
fwnode_property_read_string(fwnode, "label", &channel_name);
prop->common_props.label = channel_name;
- value = data->decimation[ADC5_DECIMATION_DEFAULT];
+ if (prop->common_props.generation == ADC5_GEN3)
+ value = data->decimation[ADC5_DECIMATION_DEFAULT];
+ else
+ value = data->decimation[ADC5_GEN4_DECIMATION_DEFAULT];
fwnode_property_read_u32(fwnode, "qcom,decimation", &value);
ret = qcom_adc5_decimation_from_dt(value, data->decimation);
if (ret < 0)
@@ -480,7 +578,7 @@ static int adc5_gen3_get_fw_channel_data(struct adc5_chip *adc,
chan, value);
prop->common_props.decimation = ret;
- prop->common_props.prescale = adc->data->adc_chans[chan].prescale_index;
+ prop->common_props.prescale = data->adc_chans[chan].prescale_index;
ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2);
if (!ret) {
ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]);
@@ -526,34 +624,13 @@ static int adc5_gen3_get_fw_channel_data(struct adc5_chip *adc,
return 0;
}
-static const struct adc5_data adc5_gen3_data_pmic = {
- .full_scale_code_volt = 0x70e4,
- .adc_chans = adc5_gen3_chans_pmic,
- .info = &adc5_gen3_info,
- .decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX])
- { 85, 340, 1360 },
- .hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX])
- { 15, 100, 200, 300,
- 400, 500, 600, 700,
- 1000, 2000, 4000, 8000,
- 16000, 32000, 64000, 128000 },
-};
-
-static const struct of_device_id adc5_match_table[] = {
- {
- .compatible = "qcom,spmi-adc5-gen3",
- .data = &adc5_gen3_data_pmic,
- },
- { }
-};
-MODULE_DEVICE_TABLE(of, adc5_match_table);
-
static int adc5_get_fw_data(struct adc5_chip *adc)
{
const struct adc5_channels *adc_chan;
struct adc5_channel_prop *chan_props;
struct iio_chan_spec *iio_chan;
struct device *dev = adc->dev;
+ const struct adc5_data *data;
unsigned int index = 0;
int ret;
@@ -582,10 +659,11 @@ static int adc5_get_fw_data(struct adc5_chip *adc)
return ret;
chan_props->chip = adc;
- adc_chan = &adc->data->adc_chans[chan_props->common_props.channel];
+ data = chan_props->common_props.data;
+ adc_chan = &data->adc_chans[chan_props->common_props.channel];
chan_props->common_props.scale_fn_type = adc_chan->scale_fn_type;
- iio_chan->channel = ADC5_GEN3_V_CHAN(chan_props->common_props);
+ iio_chan->channel = ADC5_GEN4_V_CHAN(chan_props->common_props);
iio_chan->info_mask_separate = adc_chan->info_mask;
iio_chan->type = adc_chan->type;
iio_chan->address = index;
@@ -697,7 +775,7 @@ int adc5_gen3_get_scaled_reading(struct device *dev,
return qcom_adc5_hw_scale(common_props->scale_fn_type,
common_props->prescale,
- adc->data, adc_code_volt, val);
+ common_props->data, adc_code_volt, val);
}
EXPORT_SYMBOL_NS_GPL(adc5_gen3_get_scaled_reading, "QCOM_SPMI_ADC5_GEN3");
@@ -705,12 +783,9 @@ int adc5_gen3_therm_code_to_temp(struct device *dev,
struct adc5_channel_common_prop *common_props,
u16 code, int *val)
{
- struct iio_dev *indio_dev = dev_get_drvdata(dev->parent);
- struct adc5_chip *adc = iio_priv(indio_dev);
-
return qcom_adc5_hw_scale(common_props->scale_fn_type,
common_props->prescale,
- adc->data, code, val);
+ common_props->data, code, val);
}
EXPORT_SYMBOL_NS_GPL(adc5_gen3_therm_code_to_temp, "QCOM_SPMI_ADC5_GEN3");
diff --git a/drivers/iio/adc/qcom-vadc-common.c b/drivers/iio/adc/qcom-vadc-common.c
index b03cf584b165..cb23d0d178c7 100644
--- a/drivers/iio/adc/qcom-vadc-common.c
+++ b/drivers/iio/adc/qcom-vadc-common.c
@@ -301,6 +301,10 @@ static const struct u32_fract adc5_prescale_ratios[] = {
{ .numerator = 1, .denominator = 16 },
};
+static int qcom_adc5_gen4_scale_hw_calib_therm(
+ const struct u32_fract *prescale,
+ const struct adc5_data *data,
+ u16 adc_code, int *result_mdec);
static int qcom_vadc_scale_hw_calib_volt(
const struct u32_fract *prescale,
const struct adc5_data *data,
@@ -341,6 +345,8 @@ static const struct qcom_adc5_scale_type scale_adc5_fn[] = {
qcom_vadc7_scale_hw_calib_die_temp},
[SCALE_HW_CALIB_PM5_CHG_TEMP] = {qcom_vadc_scale_hw_chg5_temp},
[SCALE_HW_CALIB_PM5_SMB_TEMP] = {qcom_vadc_scale_hw_smb_temp},
+ [SCALE_HW_CALIB_THERM_100K_PU_GEN4] = {
+ qcom_adc5_gen4_scale_hw_calib_therm},
};
static int qcom_vadc_map_voltage_temp(const struct vadc_map_pt *pts,
@@ -556,6 +562,32 @@ static int qcom_vadc7_scale_hw_calib_therm(
return 0;
}
+static int qcom_adc5_gen4_scale_hw_calib_therm(
+ const struct u32_fract *prescale,
+ const struct adc5_data *data,
+ u16 adc_code, int *result_mdec)
+{
+ s64 resistance = adc_code;
+ int ret, result;
+
+ if (adc_code >= RATIO_MAX_ADC5_GEN4)
+ return -EINVAL;
+
+ /* (ADC code * R_PULLUP (100Kohm)) / (full_scale_code - ADC code)*/
+ resistance *= R_PU_100K;
+ resistance = div64_s64(resistance, RATIO_MAX_ADC5_GEN4 - adc_code);
+
+ ret = qcom_vadc_map_voltage_temp(adcmap7_100k,
+ ARRAY_SIZE(adcmap7_100k),
+ resistance, &result);
+ if (ret)
+ return ret;
+
+ *result_mdec = result;
+
+ return 0;
+}
+
static int qcom_vadc_scale_hw_calib_volt(
const struct u32_fract *prescale,
const struct adc5_data *data,
diff --git a/include/linux/iio/adc/qcom-adc5-gen3-common.h b/include/linux/iio/adc/qcom-adc5-gen3-common.h
index 39cbfcbdb101..5d8e38350827 100644
--- a/include/linux/iio/adc/qcom-adc5-gen3-common.h
+++ b/include/linux/iio/adc/qcom-adc5-gen3-common.h
@@ -40,7 +40,8 @@
#define ADC5_GEN3_CONV_ERR_CLR_REQ BIT(0)
#define ADC5_GEN3_SID 0x4f
-#define ADC5_GEN3_SID_MASK GENMASK(3, 0)
+#define ADC5_GEN4_SID_MASK GENMASK(4, 0)
+#define ADC5_GEN4_BUS_INDEX_MASK GENMASK(6, 5)
#define ADC5_GEN3_PERPH_CH 0x50
#define ADC5_GEN3_CHAN_CONV_REQ BIT(7)
@@ -51,6 +52,7 @@
#define ADC5_GEN3_DIG_PARAM 0x52
#define ADC5_GEN3_DIG_PARAM_CAL_SEL_MASK GENMASK(5, 4)
#define ADC5_GEN3_DIG_PARAM_DEC_RATIO_SEL_MASK GENMASK(3, 2)
+#define ADC5_GEN4_DECIMATION_DEFAULT 1
#define ADC5_GEN3_FAST_AVG 0x53
#define ADC5_GEN3_FAST_AVG_CTL_EN BIT(7)
@@ -75,10 +77,13 @@
#define ADC5_GEN3_CONV_REQ 0xe5
#define ADC5_GEN3_CONV_REQ_REQ BIT(0)
-#define ADC5_GEN3_VIRTUAL_SID_MASK GENMASK(15, 8)
-#define ADC5_GEN3_CHANNEL_MASK GENMASK(7, 0)
-#define ADC5_GEN3_V_CHAN(x) \
- (FIELD_PREP(ADC5_GEN3_VIRTUAL_SID_MASK, (x).sid) | (x).channel)
+#define ADC5_GEN4_V_CHAN_BUS_INDEX_MASK GENMASK(14, 13)
+#define ADC5_GEN4_V_CHAN_SID_MASK GENMASK(12, 8)
+#define ADC5_GEN4_V_CHAN_CHANNEL_MASK GENMASK(7, 0)
+#define ADC5_GEN4_V_CHAN(x) \
+ (FIELD_PREP(ADC5_GEN4_V_CHAN_BUS_INDEX_MASK, (x).bus_index) | \
+ FIELD_PREP(ADC5_GEN4_V_CHAN_SID_MASK, (x).sid) | \
+ FIELD_PREP(ADC5_GEN4_V_CHAN_CHANNEL_MASK, (x).channel))
/* ADC channels for PMIC5 Gen3 */
#define ADC5_GEN3_REF_GND 0x00
@@ -102,6 +107,27 @@
#define ADC5_MAX_CHANNEL 0xc0
+/* ADC channels for PMIC5 Gen4 */
+#define ADC5_GEN4_OFFSET_REF 0x00
+#define ADC5_GEN4_1P25VREF 0x01
+#define ADC5_GEN4_DIE_TEMP 0x03
+#define ADC5_GEN4_USB_SNS_DIV20 0x11
+#define ADC5_GEN4_VIN_DIV20_MUX 0x12
+#define ADC5_GEN4_VPH_PWR 0x8e
+#define ADC5_GEN4_VBAT_SNS_QBG 0x8f
+/* 100k pull-up channels */
+#define ADC5_GEN4_AMUX1_THM_100K_PU 0x44
+#define ADC5_GEN4_AMUX2_THM_100K_PU 0x45
+#define ADC5_GEN4_AMUX3_THM_100K_PU 0x46
+#define ADC5_GEN4_AMUX4_THM_100K_PU 0x47
+#define ADC5_GEN4_AMUX5_THM_100K_PU 0x48
+#define ADC5_GEN4_AMUX6_THM_100K_PU 0x49
+#define ADC5_GEN4_AMUX1_GPIO_100K_PU 0x4a
+#define ADC5_GEN4_AMUX2_GPIO_100K_PU 0x4b
+#define ADC5_GEN4_AMUX3_GPIO_100K_PU 0x4c
+#define ADC5_GEN4_AMUX4_GPIO_100K_PU 0x4d
+#define ADC5_GEN4_AMUX5_GPIO_100K_PU 0x5e
+
enum adc5_cal_method {
ADC5_NO_CAL = 0,
ADC5_RATIOMETRIC_CAL,
@@ -117,6 +143,11 @@ enum adc5_time_select {
MEAS_INT_NONE,
};
+enum adc_generation {
+ ADC5_GEN3 = 0,
+ ADC5_GEN4,
+};
+
/**
* struct adc5_sdam_data - data per SDAM allocated for adc usage
* @base_addr: base address for the ADC SDAM peripheral.
@@ -166,6 +197,9 @@ struct adc5_channel_common_prop {
unsigned int hw_settle_time_us;
unsigned int avg_samples;
enum vadc_scale_fn_type scale_fn_type;
+ enum adc_generation generation;
+ unsigned int bus_index;
+ const struct adc5_data *data;
};
/**
diff --git a/include/linux/iio/adc/qcom-vadc-common.h b/include/linux/iio/adc/qcom-vadc-common.h
index 3bf4c49726a7..4be682083843 100644
--- a/include/linux/iio/adc/qcom-vadc-common.h
+++ b/include/linux/iio/adc/qcom-vadc-common.h
@@ -54,6 +54,7 @@
#define R_PU_100K 100000
#define RATIO_MAX_ADC7 BIT(14)
+#define RATIO_MAX_ADC5_GEN4 0xffff
/*
* VADC_CALIB_ABSOLUTE: uses the 625mV and 1.25V as reference channels.
@@ -105,6 +106,8 @@ struct vadc_linear_graph {
* charger temperature.
* @SCALE_HW_CALIB_PM5_SMB_TEMP: Returns result in millidegrees for PMIC5
* SMB1390 temperature.
+ * @SCALE_HW_CALIB_THERM_100K_PU_GEN4: Returns temperature in millidegC using
+ * lookup table for PMIC5 Gen4 ADC. The hardware applies offset/slope to adc code.
*/
enum vadc_scale_fn_type {
SCALE_DEFAULT = 0,
@@ -120,6 +123,7 @@ enum vadc_scale_fn_type {
SCALE_HW_CALIB_PMIC_THERM_PM7,
SCALE_HW_CALIB_PM5_CHG_TEMP,
SCALE_HW_CALIB_PM5_SMB_TEMP,
+ SCALE_HW_CALIB_THERM_100K_PU_GEN4,
/* private: */
SCALE_HW_CALIB_INVALID,
};
--
2.43.0