From ebdfb6b5e24202b2d7e54318f1fc2742ba42c9e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pawe=C5=82=20Anikiel?= <pan@semihalf.com>
Date: Fri, 4 Aug 2023 10:36:54 +0000
Subject: [PATCH] drivers: sensor: ntc-thermistor: Add Murata NCP15WB473
 thermistor
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Add murata,ncp15wb473 property together with a compensation table. The
table can be found on the vendor's website
(Resistance VS. Temperature tab):
https://www.murata.com/en-us/products/productdetail?partno=NCP15WB473F03RC

Signed-off-by: Paweł Anikiel <pan@semihalf.com>
---
 drivers/sensor/ntc_thermistor/Kconfig         |  3 ++-
 .../sensor/ntc_thermistor/ntc_thermistor.c    | 26 +++++++++++++++++++
 dts/bindings/sensor/murata,ncp15wb473.yaml    |  8 ++++++
 tests/drivers/build_all/sensor/adc.dtsi       |  9 +++++++
 4 files changed, 45 insertions(+), 1 deletion(-)
 create mode 100644 dts/bindings/sensor/murata,ncp15wb473.yaml

diff --git a/drivers/sensor/ntc_thermistor/Kconfig b/drivers/sensor/ntc_thermistor/Kconfig
index 3b73aebd205..8ab04aaf184 100644
--- a/drivers/sensor/ntc_thermistor/Kconfig
+++ b/drivers/sensor/ntc_thermistor/Kconfig
@@ -6,7 +6,8 @@ config NTC_THERMISTOR
 	bool "NTC Thermistor"
 	default y
 	depends on DT_HAS_NTC_THERMISTOR_GENERIC_ENABLED || \
-		   DT_HAS_EPCOS_B57861S0103A039_ENABLED
+		   DT_HAS_EPCOS_B57861S0103A039_ENABLED  || \
+		   DT_HAS_MURATA_NCP15WB473_ENABLED
 	select ADC
 	help
 	  Enable driver for Zephyr NTC Thermistor.
diff --git a/drivers/sensor/ntc_thermistor/ntc_thermistor.c b/drivers/sensor/ntc_thermistor/ntc_thermistor.c
index c07742f3b3f..00757a49f0c 100644
--- a/drivers/sensor/ntc_thermistor/ntc_thermistor.c
+++ b/drivers/sensor/ntc_thermistor/ntc_thermistor.c
@@ -156,3 +156,29 @@ static __unused const struct ntc_compensation comp_epcos_b57861s0103a039[] = {
 
 DT_INST_FOREACH_STATUS_OKAY_VARGS(NTC_THERMISTOR_DEFINE, DT_DRV_COMPAT,
 				  comp_epcos_b57861s0103a039)
+
+/* murata,ncp15wb473 */
+#undef DT_DRV_COMPAT
+#define DT_DRV_COMPAT murata_ncp15wb473
+
+static __unused const struct ntc_compensation comp_murata_ncp15wb473[] = {
+	{ -25, 655802 },
+	{ -15, 360850 },
+	{ -5,  206463 },
+	{ 5,   122259 },
+	{ 15,  74730 },
+	{ 25,  47000 },
+	{ 35,  30334 },
+	{ 45,  20048 },
+	{ 55,  13539 },
+	{ 65,  9328 },
+	{ 75,  6544 },
+	{ 85,  4674 },
+	{ 95,  3388 },
+	{ 105, 2494 },
+	{ 115, 1860 },
+	{ 125, 1406 },
+};
+
+DT_INST_FOREACH_STATUS_OKAY_VARGS(NTC_THERMISTOR_DEFINE, DT_DRV_COMPAT,
+				  comp_murata_ncp15wb473)
diff --git a/dts/bindings/sensor/murata,ncp15wb473.yaml b/dts/bindings/sensor/murata,ncp15wb473.yaml
new file mode 100644
index 00000000000..2ea851719dd
--- /dev/null
+++ b/dts/bindings/sensor/murata,ncp15wb473.yaml
@@ -0,0 +1,8 @@
+# Copyright (c) 2023 Google LLC
+# SPDX-License-Identifier: Apache-2.0
+
+description: MURATA NCP15WB473 thermistor
+
+compatible: "murata,ncp15wb473"
+
+include: ntc-thermistor.yaml
diff --git a/tests/drivers/build_all/sensor/adc.dtsi b/tests/drivers/build_all/sensor/adc.dtsi
index c5a1223576e..fb004abaf37 100644
--- a/tests/drivers/build_all/sensor/adc.dtsi
+++ b/tests/drivers/build_all/sensor/adc.dtsi
@@ -51,3 +51,12 @@ test_epcos_b57861s0103a039: epcos-b57861s0103a039 {
 	pulldown-ohm = <10000>;
 	connected-positive;
 };
+
+test_murata_ncp15wb473: murata-ncp15wb473 {
+	compatible = "murata,ncp15wb473";
+	io-channels = <&adc0 0>;
+	pullup-uv = <3300000>;
+	pullup-ohm = <0>;
+	pulldown-ohm = <10000>;
+	connected-positive;
+};