zephyr: adc: switch to using io-channels

There is a special property named "io-channels" which can be used to
specify ADC module and channel.

Switch to use the "io-channels" property in the named-adc-channels node
instead of custom "channel" property.

The "io-channels" also specifies the ADC module, so there is no more
need of choosing "cros-ec,adc" in dts files.

BUG=b:213210342
TEST=zmake testall && make sure the 'adc' console command shows correct
values
BRANCH=main
Signed-off-by: Dawid Niedzwiecki <dn@semihalf.com>

Change-Id: I8b5b6a46ad6141fb0446cb9051cfd4eaa0c732fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3379806
Tested-by: Dawid Niedźwiecki <dn@semihalf.com>
Reviewed-by: Keith Short <keithshort@chromium.org>
Commit-Queue: Keith Short <keithshort@chromium.org>

19 files changed, 75 insertions, 75 deletions

diff --git a/zephyr/boards/arm/brya/brya.dts b/zephyr/boards/arm/brya/brya.dts
index 02dfee6d1c..a37b8f6650 100644
--- a/zephyr/boards/arm/brya/brya.dts
+++ b/zephyr/boards/arm/brya/brya.dts
@@ -75,22 +75,22 @@
 		adc_ddr_soc: ddr_soc {
 			label = "TEMP_DDR_SOC";
 			enum-name = "ADC_TEMP_SENSOR_1_DDR_SOC";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_ambient: ambient {
 			label = "TEMP_AMBIENT";
 			enum-name = "ADC_TEMP_SENSOR_2_AMBIENT";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_charger: charger {
 			label = "TEMP_CHARGER";
 			enum-name = "ADC_TEMP_SENSOR_3_CHARGER";
-			channel = <6>;
+			io-channels = <&adc0 6>;
 		};
 		adc_wwan: wwan {
 			label = "TEMP_WWAN";
 			enum-name = "ADC_TEMP_SENSOR_4_WWAN";
-			channel = <7>;
+			io-channels = <&adc0 7>;
 		};
 	};
 
diff --git a/zephyr/boards/arm/herobrine_npcx9/herobrine_npcx9.dts b/zephyr/boards/arm/herobrine_npcx9/herobrine_npcx9.dts
index 2103b59c1d..27451b0951 100644
--- a/zephyr/boards/arm/herobrine_npcx9/herobrine_npcx9.dts
+++ b/zephyr/boards/arm/herobrine_npcx9/herobrine_npcx9.dts
@@ -66,14 +66,14 @@
 		vbus {
 			label = "VBUS";
 			enum-name = "ADC_VBUS";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 			/* Measure VBUS through a 1/10 voltage divider */
 			mul = <10>;
 		};
 		amon_bmon {
 			label = "AMON_BMON";
 			enum-name = "ADC_AMON_BMON";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 			/*
 			 * Adapter current output or battery charging/
 			 * discharging current (uV) 18x amplification on
@@ -85,7 +85,7 @@
 		psys {
 			label = "PSYS";
 			enum-name = "ADC_PSYS";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 			/*
 			 * ISL9238 PSYS output is 1.44 uA/W over 5.6K resistor,
 			 * to read 0.8V @ 99 W, i.e. 124000 uW/mV.
diff --git a/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi b/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi
index 4995cd8af3..af5d6218bb 100644
--- a/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi
+++ b/zephyr/boards/arm/npcx_evb/npcx_evb.dtsi
@@ -47,27 +47,27 @@
 		adc_ch_0 {
 			label = "ADC0";
 			enum-name = "ADC_EVB_CH_0";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_ch_1 {
 			label = "ADC1";
 			enum-name = "ADC_EVB_CH_1";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_ch_2 {
 			label = "ADC2";
 			enum-name = "ADC_EVB_CH_2";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_ch_3 {
 			label = "ADC3";
 			enum-name = "ADC_EVB_CH_3";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 		};
 		adc_ch_4 {
 			label = "ADC4";
 			enum-name = "ADC_EVB_CH_4";
-			channel = <4>;
+			io-channels = <&adc0 4>;
 		};
 	};
 
diff --git a/zephyr/boards/arm/trogdor/trogdor.dts b/zephyr/boards/arm/trogdor/trogdor.dts
index 3b9c6178e8..d930907cf8 100644
--- a/zephyr/boards/arm/trogdor/trogdor.dts
+++ b/zephyr/boards/arm/trogdor/trogdor.dts
@@ -118,14 +118,14 @@
 		vbus {
 			label = "VBUS";
 			enum-name = "ADC_VBUS";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 			/* Measure VBUS through a 1/10 voltage divider */
 			mul = <10>;
 		};
 		amon_bmon {
 			label = "AMON_BMON";
 			enum-name = "ADC_AMON_BMON";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 			/*
 			 * Adapter current output or battery charging/
 			 * discharging current (uV) 18x amplification on
@@ -137,7 +137,7 @@
 		psys {
 			label = "PSYS";
 			enum-name = "ADC_PSYS";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 			/*
 			 * ISL9238 PSYS output is 1.44 uA/W over 5.6K resistor,
 			 * to read 0.8V @ 99 W, i.e. 124000 uW/mV.
diff --git a/zephyr/boards/arm/volteer/volteer.dts b/zephyr/boards/arm/volteer/volteer.dts
index 79d08170af..cbc8227760 100644
--- a/zephyr/boards/arm/volteer/volteer.dts
+++ b/zephyr/boards/arm/volteer/volteer.dts
@@ -95,22 +95,22 @@
 		adc_charger: charger {
 			label = "TEMP_CHARGER";
 			enum-name = "ADC_TEMP_SENSOR_CHARGER";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_pp3300_regulator: pp3300_regulator {
 			label = "TEMP_PP3300_REGULATOR";
 			enum-name = "ADC_TEMP_SENSOR_PP3300_REGULATOR";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_ddr_soc: ddr_soc {
 			label = "TEMP_DDR_SOC";
 			enum-name = "ADC_TEMP_SENSOR_DDR_SOC";
-			channel = <8>;
+			io-channels = <&adc0 8>;
 		};
 		adc_fan: fan {
 			label = "TEMP_FAN";
 			enum-name = "ADC_TEMP_SENSOR_FAN";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 		};
 	};
 
diff --git a/zephyr/boards/riscv/asurada/asurada.dts b/zephyr/boards/riscv/asurada/asurada.dts
index 9b8cf91283..df768c7c5b 100644
--- a/zephyr/boards/riscv/asurada/asurada.dts
+++ b/zephyr/boards/riscv/asurada/asurada.dts
@@ -45,41 +45,41 @@
 		adc_vbus_c0 {
 			label = "VBUS_C0";
 			enum-name = "ADC_VBUS_C0";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 			mul = <10>;
 		};
 		adc_board_id0 {
 			label = "BOARD_ID_0";
 			enum-name = "ADC_BOARD_ID_0";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_board_id1 {
 			label = "BOARD_ID_1";
 			enum-name = "ADC_BOARD_ID_1";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_charger_amon_r {
 			label = "AMON_BMON";
 			enum-name = "ADC_AMON_BMON";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 			mul = <1000>;
 			div = <18>;
 		};
 		adc_vbus_c1 {
 			label = "VBUS_C1";
 			enum-name = "ADC_VBUS_C1";
-			channel = <5>;
+			io-channels = <&adc0 5>;
 			mul = <10>;
 		};
 		adc_charger_pmon {
 			label = "PMON";
 			enum-name = "ADC_PMON";
-			channel = <6>;
+			io-channels = <&adc0 6>;
 		};
 		adc-psys {
 			label = "PSYS";
 			enum-name = "ADC_PSYS";
-			channel = <6>;
+			io-channels = <&adc0 6>;
 		};
 	};
 
diff --git a/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts b/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts
index 52ee525eae..c0c186f256 100644
--- a/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts
+++ b/zephyr/boards/riscv/it8xxx2_evb/it8xxx2_evb.dts
@@ -102,32 +102,32 @@
 		adc_vbussa: vbussa {
 			label = "ADC_VBUSSA";
 			enum-name = "ADC_VBUS";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_vbussb: vbussb {
 			label = "ADC_VBUSSB";
 			enum-name = "ADC_PSYS";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_evb_ch_13: evb_ch_13 {
 			label = "ADC_EVB_CH_13";
 			enum-name = "ADC_AMON_BMON";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_evb_ch_14: evb_ch_14 {
 			label = "ADC_EVB_CH_14";
 			enum-name = "ADC_TEMP_SENSOR_FAN";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 		};
 		adc_evb_ch_15: evb_ch_15 {
 			label = "ADC_EVB_CH_15";
 			enum-name = "ADC_TEMP_SENSOR_DDR_SOC";
-			channel = <4>;
+			io-channels = <&adc0 4>;
 		};
 		adc_evb_ch_16: evb_ch_16 {
 			label = "ADC_EVB_CH_16";
 			enum-name = "ADC_TEMP_SENSOR_CHARGER";
-			channel = <5>;
+			io-channels = <&adc0 5>;
 		};
 	};
 
diff --git a/zephyr/dts/bindings/adc/named-adc.yaml b/zephyr/dts/bindings/adc/named-adc.yaml
index a21ed82e39..5e1edb6000 100644
--- a/zephyr/dts/bindings/adc/named-adc.yaml
+++ b/zephyr/dts/bindings/adc/named-adc.yaml
@@ -14,10 +14,10 @@ child-binding:
       type: string
       description:
         String used to describe an ADC channel in the 'adc' console command.
-    channel:
+    io-channels:
       required: true
-      type: int
-      description: ADC channel used
+      type: phandle-array
+      description: IO channels specifiers ADC channel used
     mul:
       required: false
       type: int
diff --git a/zephyr/include/cros/ite/it8xxx2.dtsi b/zephyr/include/cros/ite/it8xxx2.dtsi
index d835d9d4f1..a6a4d89e1c 100644
--- a/zephyr/include/cros/ite/it8xxx2.dtsi
+++ b/zephyr/include/cros/ite/it8xxx2.dtsi
@@ -8,7 +8,6 @@
 
 / {
 	chosen {
-		cros-ec,adc = &adc0;
 		cros-ec,bbram = &bbram;
 		cros-ec,espi = &espi0;
 		cros-ec,flash = &fiu0;
diff --git a/zephyr/include/cros/nuvoton/npcx.dtsi b/zephyr/include/cros/nuvoton/npcx.dtsi
index 0a658663a8..44b3433459 100644
--- a/zephyr/include/cros/nuvoton/npcx.dtsi
+++ b/zephyr/include/cros/nuvoton/npcx.dtsi
@@ -11,7 +11,6 @@
 
 / {
 	chosen {
-		cros-ec,adc = &adc0;
 		cros-ec,bbram = &bbram;
 		cros-ec,espi = &espi0;
 		cros-ec,flash = &fiu0;
diff --git a/zephyr/projects/corsola/adc_kingler.dts b/zephyr/projects/corsola/adc_kingler.dts
index 7b2e9817e4..badef7a849 100644
--- a/zephyr/projects/corsola/adc_kingler.dts
+++ b/zephyr/projects/corsola/adc_kingler.dts
@@ -10,7 +10,7 @@
 		adc_charger_pmon_r {
 			label = "ADC_CHARGER_PMON_R";
 			enum-name = "ADC_PSYS";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 			/*
 			 * ISL9238C PSYS output is 1.44 uA/W over 33K resistor.
 			 */
@@ -19,17 +19,17 @@
 		adc_ec_id0 {
 			label = "ADC_EC_ID0";
 			enum-name = "ADC_ID_0";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_ec_id1 {
 			label = "ADC_EC_ID1";
 			enum-name = "ADC_ID_1";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_charger_amon_r {
 			label = "ADC_AMON_R";
 			enum-name = "ADC_AMON_BMON";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 			mul = <1000>;
 			div = <18>;
 		};
diff --git a/zephyr/projects/corsola/adc_krabby.dts b/zephyr/projects/corsola/adc_krabby.dts
index 938fc42cd1..f9cab10cf1 100644
--- a/zephyr/projects/corsola/adc_krabby.dts
+++ b/zephyr/projects/corsola/adc_krabby.dts
@@ -10,23 +10,23 @@
 		adc_vbus_c0 {
 			label = "VBUS_C0";
 			enum-name = "ADC_VBUS_C0";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 			mul = <10>;
 		};
 		adc_board_id0 {
 			label = "BOARD_ID_0";
 			enum-name = "ADC_BOARD_ID_0";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_board_id1 {
 			label = "BOARD_ID_1";
 			enum-name = "ADC_BOARD_ID_1";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_vbus_c1 {
 			label = "VBUS_C1";
 			enum-name = "ADC_VBUS_C1";
-			channel = <7>;
+			io-channels = <&adc0 7>;
 			mul = <10>;
 		};
 	};
diff --git a/zephyr/projects/nissa/nereid_generated.dts b/zephyr/projects/nissa/nereid_generated.dts
index 0ea7482308..a93f889b9c 100644
--- a/zephyr/projects/nissa/nereid_generated.dts
+++ b/zephyr/projects/nissa/nereid_generated.dts
@@ -13,22 +13,22 @@
 		adc_ec_vsense_pp3300_s5: ec_vsense_pp3300_s5 {
 			label = "EC_VSENSE_PP3300_S5";
 			enum-name = "ADC_PP3300_S5";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_temp_sensor_1: temp_sensor_1 {
 			label = "TEMP_SENSOR_1";
 			enum-name = "ADC_TEMP_SENSOR_1";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_temp_sensor_2: temp_sensor_2 {
 			label = "TEMP_SENSOR_2";
 			enum-name = "ADC_TEMP_SENSOR_2";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 		};
 		adc_temp_sensor_3: temp_sensor_3 {
 			label = "TEMP_SENSOR_3";
 			enum-name = "ADC_TEMP_SENSOR_3";
-			channel = <13>;
+			io-channels = <&adc0 13>;
 		};
 	};
 
diff --git a/zephyr/projects/nissa/nivviks_generated.dts b/zephyr/projects/nissa/nivviks_generated.dts
index a0019844e3..cc3dfa0210 100644
--- a/zephyr/projects/nissa/nivviks_generated.dts
+++ b/zephyr/projects/nissa/nivviks_generated.dts
@@ -13,17 +13,17 @@
 		adc_ec_vsense_pp3300_s5: ec_vsense_pp3300_s5 {
 			label = "EC_VSENSE_PP3300_S5";
 			enum-name = "ADC_PP3300_S5";
-			channel = <6>;
+			io-channels = <&adc0 6>;
 		};
 		adc_temp_sensor_1: temp_sensor_1 {
 			label = "TEMP_SENSOR_1";
 			enum-name = "ADC_TEMP_SENSOR_1";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_temp_sensor_2: temp_sensor_2 {
 			label = "TEMP_SENSOR_2";
 			enum-name = "ADC_TEMP_SENSOR_2";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 	};
 
diff --git a/zephyr/projects/skyrim/adc.dts b/zephyr/projects/skyrim/adc.dts
index fa9db4ece8..46b4b454b3 100644
--- a/zephyr/projects/skyrim/adc.dts
+++ b/zephyr/projects/skyrim/adc.dts
@@ -12,22 +12,22 @@
 		adc_temp_charger: temp-charger {
 			label = "CHARGER";
 			enum-name = "ADC_TEMP_SENSOR_CHARGER";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_temp_memory: temp-memory {
 			label = "MEMORY";
 			enum-name = "ADC_TEMP_SENSOR_MEMORY";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_core_imon1: core-imon1 {
 			label = "CORE_I";
 			enum-name = "ADC_CORE_IMON1";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 		};
 		adc_core_imon2: core-imon2 {
 			label = "SOC_I";
 			enum-name = "ADC_SOC_IMON2";
-			channel = <4>;
+			io-channels = <&adc0 4>;
 		};
 	};
 
diff --git a/zephyr/projects/skyrim/guybrush.dts b/zephyr/projects/skyrim/guybrush.dts
index 9fbc31c2bc..5c7d86c95f 100644
--- a/zephyr/projects/skyrim/guybrush.dts
+++ b/zephyr/projects/skyrim/guybrush.dts
@@ -105,7 +105,7 @@
 		adc_temp_soc: temp-soc {
 			label = "SOC";
 			enum-name = "ADC_TEMP_SENSOR_SOC";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 	};
 };
diff --git a/zephyr/shim/include/zephyr_adc.h b/zephyr/shim/include/zephyr_adc.h
index 4d279bec86..1c8e06664b 100644
--- a/zephyr/shim/include/zephyr_adc.h
+++ b/zephyr/shim/include/zephyr_adc.h
@@ -24,6 +24,7 @@ enum adc_channel {
 
 struct adc_t {
 	const char *name;
+	const struct device *dev;
 	uint8_t input_ch;
 	int factor_mul;
 	int factor_div;
diff --git a/zephyr/shim/src/adc.c b/zephyr/shim/src/adc.c
index 4b2de4bd24..68babcc576 100644
--- a/zephyr/shim/src/adc.c
+++ b/zephyr/shim/src/adc.c
@@ -3,6 +3,7 @@
  * found in the LICENSE file.
  */
 
+#include <devicetree/io-channels.h>
 #include <drivers/adc.h>
 #include <logging/log.h>
 #include "adc.h"
@@ -14,19 +15,18 @@ LOG_MODULE_REGISTER(shim_adc, LOG_LEVEL_ERR);
 #error "Define only one 'adc' console command."
 #endif
 
-#define adc_dev DEVICE_DT_GET(DT_CHOSEN(cros_ec_adc))
-
 #define HAS_NAMED_ADC_CHANNELS DT_NODE_EXISTS(DT_INST(0, named_adc_channels))
 
 #if HAS_NAMED_ADC_CHANNELS
 #define ADC_CHANNEL_COMMA(node_id)                                        \
 	[ZSHIM_ADC_ID(node_id)] = {                                       \
 		.name = DT_LABEL(node_id),                                \
-		.input_ch = DT_PROP(node_id, channel),                    \
+		.dev = DEVICE_DT_GET(DT_IO_CHANNELS_CTLR(node_id)),        \
+		.input_ch = DT_IO_CHANNELS_INPUT(node_id),                \
 		.factor_mul = DT_PROP(node_id, mul),                      \
 		.factor_div = DT_PROP(node_id, div),                      \
 		.channel_cfg = {                                          \
-			.channel_id = DT_PROP(node_id, channel),          \
+			.channel_id = DT_IO_CHANNELS_INPUT(node_id),      \
 			.gain = DT_STRING_TOKEN(node_id, gain),           \
 			.reference = DT_STRING_TOKEN(node_id, reference), \
 			.acquisition_time =                               \
@@ -47,13 +47,14 @@ static int init_device_bindings(const struct device *device)
 {
 	ARG_UNUSED(device);
 
-	if (!device_is_ready(adc_dev)) {
-		k_oops();
-	}
-
 #if HAS_NAMED_ADC_CHANNELS
-	for (int i = 0; i < ARRAY_SIZE(adc_channels); i++)
-		adc_channel_setup(adc_dev, &adc_channels[i].channel_cfg);
+	for (int i = 0; i < ARRAY_SIZE(adc_channels); i++) {
+		if (!device_is_ready(adc_channels[i].dev))
+			k_oops();
+
+		adc_channel_setup(adc_channels[i].dev,
+				  &adc_channels[i].channel_cfg);
+	}
 #endif
 
 	return 0;
@@ -73,12 +74,13 @@ int adc_read_channel(enum adc_channel ch)
 		.calibrate = false,
 	};
 
-	rv = adc_read(adc_dev, &seq);
+	rv = adc_read(adc_channels[ch].dev, &seq);
 	if (rv)
 		return rv;
 
-	adc_raw_to_millivolts(adc_ref_internal(adc_dev), ADC_GAIN_1,
-			      CONFIG_PLATFORM_EC_ADC_RESOLUTION, &ret);
+	adc_raw_to_millivolts(adc_ref_internal(adc_channels[ch].dev),
+			      ADC_GAIN_1, CONFIG_PLATFORM_EC_ADC_RESOLUTION,
+			      &ret);
 	ret = (ret * adc_channels[ch].factor_mul) / adc_channels[ch].factor_div;
 	return ret;
 }
diff --git a/zephyr/test/drivers/overlay.dts b/zephyr/test/drivers/overlay.dts
index ca38a578aa..bc388a6912 100644
--- a/zephyr/test/drivers/overlay.dts
+++ b/zephyr/test/drivers/overlay.dts
@@ -9,7 +9,6 @@
 
 / {
 	chosen {
-		cros-ec,adc = &adc0;
 		cros-ec,espi = &espi0;
 	};
 
@@ -242,22 +241,22 @@
 		adc_charger: charger {
 			label = "ADC_TEMP_SENSOR_CHARGER";
 			enum-name = "ADC_TEMP_SENSOR_CHARGER";
-			channel = <0>;
+			io-channels = <&adc0 0>;
 		};
 		adc_pp3300_regulator: pp3300-regulator {
 			label = "ADC_TEMP_SENSOR_PP3300_REGULATOR";
 			enum-name = "ADC_TEMP_SENSOR_PP3300_REGULATOR";
-			channel = <1>;
+			io-channels = <&adc0 1>;
 		};
 		adc_ddr_soc: ddr-soc {
 			label = "ADC_TEMP_SENSOR_DDR_SOC";
 			enum-name = "ADC_TEMP_SENSOR_DDR_SOC";
-			channel = <2>;
+			io-channels = <&adc0 2>;
 		};
 		adc_fan: fan {
 			label = "ADC_TEMP_SENSOR_FAN";
 			enum-name = "ADC_TEMP_SENSOR_FAN";
-			channel = <3>;
+			io-channels = <&adc0 3>;
 		};
 	};