bcm27xx: add support for linux v5.15

Build system: x86_64
Build-tested: bcm2708, bcm2709, bcm2710, bcm2711
Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B

Signed-off-by: Marty Jones <mj8263788@gmail.com>
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 78 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.15/950-0670-overlays-Add-MAX30102-HR-to-i2c-sensor-overlay.patch b/target/linux/bcm27xx/patches-5.15/950-0670-overlays-Add-MAX30102-HR-to-i2c-sensor-overlay.patch
new file mode 100644
index 0000000000..82bcce6671
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.15/950-0670-overlays-Add-MAX30102-HR-to-i2c-sensor-overlay.patch
@@ -0,0 +1,78 @@
+From 2f995c2231e449016206dd2905b87846adc2b357 Mon Sep 17 00:00:00 2001
+From: coldspark29 <jan.claussen10@web.de>
+Date: Wed, 18 Aug 2021 13:41:04 +0200
+Subject: [PATCH] overlays: Add MAX30102 HR to i2c-sensor overlay
+
+Add support for the MAX30102 heart rate and blood oxygen sensor to the
+i2c-sensor overlay.
+
+See: https://github.com/raspberrypi/linux/pull/4535
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.com>
+---
+ arch/arm/boot/dts/overlays/README             |  6 ++++++
+ .../boot/dts/overlays/i2c-sensor-overlay.dts  | 20 +++++++++++++++++++
+ 2 files changed, 26 insertions(+)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1725,6 +1725,9 @@ Params: addr                    Set the
+ 
+         htu21                   Select the HTU21 temperature and humidity sensor
+ 
++        int_pin                 Set the GPIO to use for interrupts (max30102
++                                only)
++
+         lm75                    Select the Maxim LM75 temperature sensor
+                                 Valid addresses 0x48-0x4f, default 0x4f
+ 
+@@ -1733,6 +1736,9 @@ Params: addr                    Set the
+         max17040                Select the Maxim Integrated MAX17040 battery
+                                 monitor
+ 
++        max30102                Select the Maxim Integrated MAX30102 heart-rate
++                                and blood-oxygen sensor
++
+         sht3x                   Select the Sensiron SHT3x temperature and
+                                 humidity sensor. Valid addresses 0x44-0x45,
+                                 default 0x44
+--- a/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+@@ -291,11 +291,30 @@
+ 		};
+ 	};
+ 
++	fragment@19 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			max30102: max30102@57 {
++				compatible = "maxim,max30102";
++				reg = <0x57>;
++				maxim,red-led-current-microamp = <7000>;
++				maxim,ir-led-current-microamp  = <7000>;
++				interrupt-parent = <&gpio>;
++				interrupts = <4 2>;
++			};
++		};
++	};
++
+ 	__overrides__ {
+ 		addr =  <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
+ 			<&lm75>,"reg:0", <&hdc100x>,"reg:0", <&sht3x>,"reg:0",
+ 			<&ds1621>,"reg:0", <&bme680>,"reg:0", <&ccs811>,"reg:0",
+ 			<&bh1750>,"reg:0";
++		int_pin = <&max30102>, "interrupts:0";
+ 		bme280 = <0>,"+0";
+ 		bmp085 = <0>,"+1";
+ 		bmp180 = <0>,"+2";
+@@ -316,5 +335,6 @@
+ 		sgp30 = <0>,"+16";
+ 		ccs811 = <0>, "+17";
+ 		bh1750 = <0>, "+18";
++		max30102 = <0>,"+19";
+ 	};
+ };