.interrupt_handler = xadc_zynq_interrupt_handler,
.update_alarm = xadc_zynq_update_alarm,
.type = XADC_TYPE_S7,
+ /* Temp in C = (val * 503.975) / 2**bits - 273.15 */
+ .temp_scale = 503975,
+ .temp_offset = 273150,
};
static const unsigned int xadc_axi_reg_offsets[] = {
.interrupt_handler = xadc_axi_interrupt_handler,
.flags = XADC_FLAGS_BUFFERED | XADC_FLAGS_IRQ_OPTIONAL,
.type = XADC_TYPE_S7,
+ /* Temp in C = (val * 503.975) / 2**bits - 273.15 */
+ .temp_scale = 503975,
+ .temp_offset = 273150,
};
static const struct xadc_ops xadc_us_axi_ops = {
.interrupt_handler = xadc_axi_interrupt_handler,
.flags = XADC_FLAGS_BUFFERED | XADC_FLAGS_IRQ_OPTIONAL,
.type = XADC_TYPE_US,
+ /**
+ * Values below are for UltraScale+ (SYSMONE4) using internal reference.
+ * See https://docs.xilinx.com/v/u/en-US/ug580-ultrascale-sysmon
+ */
+ .temp_scale = 509314,
+ .temp_offset = 280231,
};
static int _xadc_update_adc_reg(struct xadc *xadc, unsigned int reg,
*val2 = bits;
return IIO_VAL_FRACTIONAL_LOG2;
case IIO_TEMP:
- /* Temp in C = (val * 503.975) / 2**bits - 273.15 */
- *val = 503975;
+ *val = xadc->ops->temp_scale;
*val2 = bits;
return IIO_VAL_FRACTIONAL_LOG2;
default:
}
case IIO_CHAN_INFO_OFFSET:
/* Only the temperature channel has an offset */
- *val = -((273150 << bits) / 503975);
+ *val = -((xadc->ops->temp_offset << bits) / xadc->ops->temp_scale);
return IIO_VAL_INT;
case IIO_CHAN_INFO_SAMP_FREQ:
ret = xadc_read_samplerate(xadc);