bcm27xx: 5.4: add support for Sensirion SPS30 in i2c-sensor overlay

Add support for Sensirion SPS30 particulate matter sensor with fixed
address 0x69.

Signed-off-by: Petr Štetiar <[email protected]>

target/linux/bcm27xx/patches-5.4/950-0491-add-Sensirion-SPS30-to-i2c-sensor-overlay.patch

@@ -0,0 +1,59 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <[email protected]>
+Date: Sat, 7 Mar 2020 22:37:52 +0100
+Subject: [PATCH] add Sensirion SPS30 to i2c-sensor overlay
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Add support for Sensirion SPS30 particulate matter sensor with fixed
+address 0x69.
+
+Signed-off-by: Petr Štetiar <[email protected]>
+
+diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
+index 62ad35f78bad..0d7d00ac92c4 100644
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -1261,6 +1261,9 @@ Params: addr                    Set the address for the BME280, BME680, BMP280,
+         si7020                  Select the Silicon Labs Si7013/20/21 humidity/
+                                 temperature sensor
+ 
++        sps30                   Select the Sensirion SPS30 particulate matter
++                                sensor. Fixed address 0x69.
++
+         tmp102                  Select the Texas Instruments TMP102 temp sensor
+                                 Valid addresses 0x48-0x4b, default 0x48
+ 
+diff --git a/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+index 40881d72a157..ce97837b0db5 100644
+--- a/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
++++ b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
+@@ -231,6 +231,20 @@
+ 		};
+ 	};
+ 
++	fragment@15 {
++		target = <&i2c_arm>;
++		__dormant__ {
++			#address-cells = <1>;
++			#size-cells = <0>;
++			status = "okay";
++
++			sps30: sps30@69 {
++				compatible = "sensirion,sps30";
++				reg = <0x69>;
++				status = "okay";
++			};
++		};
++	};
+ 
+ 	__overrides__ {
+ 		addr =  <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
+@@ -252,5 +266,6 @@
+ 		ds1621 = <0>,"+12";
+ 		max17040 = <0>,"+13";
+ 		bme680 = <0>,"+14";
++		sps30 = <0>,"+15";
+ 	};
+ };