Apple's System Management Controller integrates numerous sensors
that can be exposed via hwmon. Add the subdevice, compatible,
and some common sensors that are exposed on every currently
supported device as a starting point.

Reviewed-by: Neal Gompa <neal@gompa.dev>
Co-developed-by: Janne Grunau <j@jannau.net>
Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
---
 .../boot/dts/apple/hwmon-common.dtsi     | 33 +++++++++++++++++++++++++
 .../boot/dts/apple/hwmon-fan-dual.dtsi   | 22 +++++++++++++++++
 arch/arm64/boot/dts/apple/hwmon-fan.dtsi | 17 +++++++++++++
 .../boot/dts/apple/hwmon-laptop.dtsi     | 33 +++++++++++++++++++++++++
 .../boot/dts/apple/hwmon-mac-mini.dtsi   | 15 +++++++++++
 .../arm64/boot/dts/apple/t6001-j375c.dts |  2 ++
 arch/arm64/boot/dts/apple/t6001.dtsi     |  2 ++
 .../arm64/boot/dts/apple/t6002-j375d.dts |  2 ++
 .../arm64/boot/dts/apple/t600x-die0.dtsi |  4 +++
 .../boot/dts/apple/t600x-j314-j316.dtsi  |  3 +++
 .../arm64/boot/dts/apple/t602x-die0.dtsi |  4 +++
 arch/arm64/boot/dts/apple/t8103-j274.dts |  2 ++
 arch/arm64/boot/dts/apple/t8103-j293.dts |  3 +++
 arch/arm64/boot/dts/apple/t8103-j313.dts |  2 ++
 arch/arm64/boot/dts/apple/t8103-j456.dts |  2 ++
 arch/arm64/boot/dts/apple/t8103-j457.dts |  2 ++
 arch/arm64/boot/dts/apple/t8103.dtsi     |  5 ++++
 arch/arm64/boot/dts/apple/t8112-j413.dts |  2 ++
 arch/arm64/boot/dts/apple/t8112-j473.dts |  2 ++
 arch/arm64/boot/dts/apple/t8112-j493.dts |  3 +++
 arch/arm64/boot/dts/apple/t8112.dtsi     |  5 ++++
 21 files changed, 165 insertions(+)

diff --git a/arch/arm64/boot/dts/apple/hwmon-common.dtsi b/arch/arm64/boot/dts/apple/hwmon-common.dtsi
new file mode 100644
index 000000000000..b87021855fdf
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/hwmon-common.dtsi
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Hardware monitoring sensors expected to be found on all Apple Silicon devices
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+&smc_hwmon {
+	current-ID0R {
+		apple,key-id = "ID0R";
+		label = "AC Input Current";
+	};
+	power-PSTR {
+		apple,key-id = "PSTR";
+		label = "Total System Power";
+	};
+	power-PDTR {
+		apple,key-id = "PDTR";
+		label = "AC Input Power";
+	};
+	power-PMVR {
+		apple,key-id = "PMVR";
+		label = "3.8 V Rail Power";
+	};
+	temperature-TH0x {
+		apple,key-id = "TH0x";
+		label = "NAND Flash Temperature";
+	};
+	voltage-VD0R {
+		apple,key-id = "VD0R";
+		label = "AC Input Voltage";
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/hwmon-fan-dual.dtsi b/arch/arm64/boot/dts/apple/hwmon-fan-dual.dtsi
new file mode 100644
index 000000000000..3eef0721bcca
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/hwmon-fan-dual.dtsi
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * SMC hwmon fan keys for Apple Silicon desktops/laptops with two fans
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+#include "hwmon-fan.dtsi"
+
+&smc_hwmon {
+	fan-F0Ac {
+		label = "Fan 1";
+	};
+	fan-F1Ac {
+		apple,key-id = "F1Ac";
+		label = "Fan 2";
+		apple,fan-minimum = "F1Mn";
+		apple,fan-maximum = "F1Mx";
+		apple,fan-target = "F1Tg";
+		apple,fan-mode = "F1Md";
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/hwmon-fan.dtsi b/arch/arm64/boot/dts/apple/hwmon-fan.dtsi
new file mode 100644
index 000000000000..fba9faf38f4b
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/hwmon-fan.dtsi
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * hwmon fan keys for Apple Silicon desktops/laptops with a single fan.
+ *
+ *  Copyright The Asahi Linux Contributors
+ */
+
+&smc_hwmon {
+	fan-F0Ac {
+		apple,key-id = "F0Ac";
+		label = "Fan";
+		apple,fan-minimum = "F0Mn";
+		apple,fan-maximum = "F0Mx";
+		apple,fan-target = "F0Tg";
+		apple,fan-mode = "F0Md";
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/hwmon-laptop.dtsi b/arch/arm64/boot/dts/apple/hwmon-laptop.dtsi
new file mode 100644
index 000000000000..0c4666282a5c
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/hwmon-laptop.dtsi
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * Hardware monitoring sensors expected on all Apple Silicon laptops
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+&smc_hwmon {
+	power-PHPC {
+		apple,key-id = "PHPC";
+		label = "Heatpipe Power";
+	};
+	temperature-TB0T {
+		apple,key-id = "TB0T";
+		label = "Battery Hotspot Temperature";
+	};
+	temperature-TCHP {
+		apple,key-id = "TCHP";
+		label = "Charge Regulator Temperature";
+	};
+	temperature-TW0P {
+		apple,key-id = "TW0P";
+		label = "WiFi/BT Module Temperature";
+	};
+	voltage-SBAV {
+		apple,key-id = "SBAV";
+		label = "Battery Voltage";
+	};
+	voltage-VD0R {
+		apple,key-id = "VD0R";
+		label = "Charger Input Voltage";
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/hwmon-mac-mini.dtsi b/arch/arm64/boot/dts/apple/hwmon-mac-mini.dtsi
new file mode 100644
index 000000000000..f32627336ae7
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/hwmon-mac-mini.dtsi
@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+/*
+ * hwmon sensors expected on all Mac mini models
+ *
+ * Copyright The Asahi Linux Contributors
+ */
+
+#include "hwmon-fan.dtsi"
+
+&smc_hwmon {
+	temperature-TW0P {
+		apple,key-id = "TW0P";
+		label = "WiFi/BT Module Temperature";
+	};
+};
diff --git a/arch/arm64/boot/dts/apple/t6001-j375c.dts b/arch/arm64/boot/dts/apple/t6001-j375c.dts
index 2e7c23714d4d..08276114c1d8 100644
--- a/arch/arm64/boot/dts/apple/t6001-j375c.dts
+++ b/arch/arm64/boot/dts/apple/t6001-j375c.dts
@@ -24,3 +24,5 @@ &wifi0 {
 &bluetooth0 {
 	brcm,board-type = "apple,okinawa";
 };
+
+#include "hwmon-fan-dual.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t6001.dtsi b/arch/arm64/boot/dts/apple/t6001.dtsi
index ffbe823b71bc..264df90f07d8 100644
--- a/arch/arm64/boot/dts/apple/t6001.dtsi
+++ b/arch/arm64/boot/dts/apple/t6001.dtsi
@@ -66,3 +66,5 @@ p-core-pmu-affinity {
 &gpu {
 	compatible = "apple,agx-g13c", "apple,agx-g13s";
 };
+
+#include "hwmon-common.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t6002-j375d.dts b/arch/arm64/boot/dts/apple/t6002-j375d.dts
index 2b7f80119618..d12c0ae418f7 100644
--- a/arch/arm64/boot/dts/apple/t6002-j375d.dts
+++ b/arch/arm64/boot/dts/apple/t6002-j375d.dts
@@ -56,3 +56,5 @@ &bluetooth0 {
 
 /delete-node/ &ps_disp0_cpu0_die1;
 /delete-node/ &ps_disp0_fe_die1;
+
+#include "hwmon-fan-dual.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t600x-die0.dtsi b/arch/arm64/boot/dts/apple/t600x-die0.dtsi
index f715b19efd16..e6647c1a9173 100644
--- a/arch/arm64/boot/dts/apple/t600x-die0.dtsi
+++ b/arch/arm64/boot/dts/apple/t600x-die0.dtsi
@@ -37,6 +37,10 @@ smc_gpio: gpio {
 			#gpio-cells = <2>;
 		};
 
+		smc_hwmon: hwmon {
+			compatible = "apple,smc-hwmon";
+		};
+
 		smc_reboot: reboot {
 			compatible = "apple,smc-reboot";
 			nvmem-cells = <&shutdown_flag>, <&boot_stage>,
diff --git a/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi b/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi
index c0aac59a6fae..127814a9dfa4 100644
--- a/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi
+++ b/arch/arm64/boot/dts/apple/t600x-j314-j316.dtsi
@@ -131,3 +131,6 @@ &fpwm0 {
 };
 
 #include "spi1-nvram.dtsi"
+
+#include "hwmon-laptop.dtsi"
+#include "hwmon-fan-dual.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t602x-die0.dtsi b/arch/arm64/boot/dts/apple/t602x-die0.dtsi
index 8622ddea7b44..680c103c1c0f 100644
--- a/arch/arm64/boot/dts/apple/t602x-die0.dtsi
+++ b/arch/arm64/boot/dts/apple/t602x-die0.dtsi
@@ -114,6 +114,10 @@ smc_gpio: gpio {
 			#gpio-cells = <2>;
 		};
 
+		smc_hwmon: hwmon {
+			compatible = "apple,smc-hwmon";
+		};
+
 		smc_reboot: reboot {
 			compatible = "apple,smc-reboot";
 			nvmem-cells = <&shutdown_flag>, <&boot_stage>,
diff --git a/arch/arm64/boot/dts/apple/t8103-j274.dts b/arch/arm64/boot/dts/apple/t8103-j274.dts
index 1c3e37f86d46..f5b8cc087882 100644
--- a/arch/arm64/boot/dts/apple/t8103-j274.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j274.dts
@@ -61,3 +61,5 @@ &pcie0_dart_2 {
 &i2c2 {
 	status = "okay";
 };
+
+#include "hwmon-mac-mini.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8103-j293.dts b/arch/arm64/boot/dts/apple/t8103-j293.dts
index 5b3c42e9f0e6..abb88391635f 100644
--- a/arch/arm64/boot/dts/apple/t8103-j293.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j293.dts
@@ -119,3 +119,6 @@ dfr_panel_in: endpoint {
 &displaydfr_dart {
 	status = "okay";
 };
+
+#include "hwmon-laptop.dtsi"
+#include "hwmon-fan.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8103-j313.dts b/arch/arm64/boot/dts/apple/t8103-j313.dts
index 97a4344d8dca..491ead016b21 100644
--- a/arch/arm64/boot/dts/apple/t8103-j313.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j313.dts
@@ -41,3 +41,5 @@ &wifi0 {
 &fpwm1 {
 	status = "okay";
 };
+
+#include "hwmon-laptop.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8103-j456.dts b/arch/arm64/boot/dts/apple/t8103-j456.dts
index 58c8e43789b4..c2ec6fbb633c 100644
--- a/arch/arm64/boot/dts/apple/t8103-j456.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j456.dts
@@ -75,3 +75,5 @@ &pcie0_dart_1 {
 &pcie0_dart_2 {
 	status = "okay";
 };
+
+#include "hwmon-fan-dual.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8103-j457.dts b/arch/arm64/boot/dts/apple/t8103-j457.dts
index 7089ccf3ce55..aeaab2482d54 100644
--- a/arch/arm64/boot/dts/apple/t8103-j457.dts
+++ b/arch/arm64/boot/dts/apple/t8103-j457.dts
@@ -56,3 +56,5 @@ ethernet0: ethernet@0,0 {
 &pcie0_dart_2 {
 	status = "okay";
 };
+
+#include "hwmon-fan.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index 59f2678639cf..f1820bdc0910 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -909,6 +909,10 @@ smc_gpio: gpio {
 				#gpio-cells = <2>;
 			};
 
+			smc_hwmon: hwmon {
+				compatible = "apple,smc-hwmon";
+			};
+
 			smc_reboot: reboot {
 				compatible = "apple,smc-reboot";
 				nvmem-cells = <&shutdown_flag>, <&boot_stage>,
@@ -1141,3 +1145,4 @@ port02: pci@2,0 {
 };
 
 #include "t8103-pmgr.dtsi"
+#include "hwmon-common.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8112-j413.dts b/arch/arm64/boot/dts/apple/t8112-j413.dts
index 6f69658623bf..500dcdf2d4b5 100644
--- a/arch/arm64/boot/dts/apple/t8112-j413.dts
+++ b/arch/arm64/boot/dts/apple/t8112-j413.dts
@@ -78,3 +78,5 @@ &i2c4 {
 &fpwm1 {
 	status = "okay";
 };
+
+#include "hwmon-laptop.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8112-j473.dts b/arch/arm64/boot/dts/apple/t8112-j473.dts
index 06fe257f08be..11db6a92493f 100644
--- a/arch/arm64/boot/dts/apple/t8112-j473.dts
+++ b/arch/arm64/boot/dts/apple/t8112-j473.dts
@@ -52,3 +52,5 @@ &pcie1_dart {
 &pcie2_dart {
 	status = "okay";
 };
+
+#include "hwmon-mac-mini.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8112-j493.dts b/arch/arm64/boot/dts/apple/t8112-j493.dts
index fb8ad7d4c65a..a0da02c00f15 100644
--- a/arch/arm64/boot/dts/apple/t8112-j493.dts
+++ b/arch/arm64/boot/dts/apple/t8112-j493.dts
@@ -133,3 +133,6 @@ touchbar0: touchbar@0 {
 		touchscreen-inverted-y;
 	};
 };
+
+#include "hwmon-laptop.dtsi"
+#include "hwmon-fan.dtsi"
diff --git a/arch/arm64/boot/dts/apple/t8112.dtsi b/arch/arm64/boot/dts/apple/t8112.dtsi
index 6bc3f58b06f7..c4d1e5ffaee9 100644
--- a/arch/arm64/boot/dts/apple/t8112.dtsi
+++ b/arch/arm64/boot/dts/apple/t8112.dtsi
@@ -912,6 +912,10 @@ smc_gpio: gpio {
 				#gpio-cells = <2>;
 			};
 
+			smc_hwmon: hwmon {
+				compatible = "apple,smc-hwmon";
+			};
+
 			smc_reboot: reboot {
 				compatible = "apple,smc-reboot";
 				nvmem-cells = <&shutdown_flag>, <&boot_stage>,
@@ -1180,3 +1184,4 @@ port03: pci@3,0 {
 };
 
 #include "t8112-pmgr.dtsi"
+#include "hwmon-common.dtsi"

-- 
2.52.0