boards/arm/efr32_thunderboard: add Si7210 sensor

Enable Si7210 hall & temp sensor on BG22 and BG27 thunderboards. Signed-off-by: Roman Dobrodii <[email protected]>
albayenes · Apr 24, 2023 · 56c38bd · 56c38bd
1 parent d641be7
commit 56c38bd
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Showing 5 changed files with 61 additions and 9 deletions.
diff --git a/boards/arm/efr32_thunderboard/efr32bg22_brd4184a.dts b/boards/arm/efr32_thunderboard/efr32bg22_brd4184a.dts
@@ -18,7 +18,6 @@
 	aliases {
 		led0 = &led0;
 		sw0 = &button0;
-		i2c-pin = &i2c_pin;
 		spi-flash0 = &mx25r80;
 		spi0 = &usart0;
 		watchdog0 = &wdog0;
@@ -59,3 +58,17 @@
 		};
 	};
 };
+
+&sw_sensor_enable {
+	enable-gpios = <&gpioa GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
+};
+
+
+&sw_mic_enable {
+	enable-gpios = <&gpioa GECKO_PIN(0) GPIO_ACTIVE_HIGH>;
+};
+
+
+&sw_imu_enable {
+	enable-gpios = <&gpiob GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
+};
diff --git a/boards/arm/efr32_thunderboard/efr32bg22_brd4184a_defconfig b/boards/arm/efr32_thunderboard/efr32bg22_brd4184a_defconfig
@@ -20,3 +20,6 @@ CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=76800000
 CONFIG_GECKO_BURTC_TIMER=y
 CONFIG_CMU_BURTCCLK_LFXO=y
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1024
+
+CONFIG_REGULATOR=y
+CONFIG_SI7210=y
diff --git a/boards/arm/efr32_thunderboard/efr32bg27_brd2602a.dts b/boards/arm/efr32_thunderboard/efr32bg27_brd2602a.dts
@@ -18,7 +18,6 @@
 	aliases {
 		led0 = &led0;
 		sw0 = &button0;
-		i2c-pin = &i2c_pin;
 		spi-flash0 = &mx25r80;
 		spi0 = &usart0;
 		watchdog0 = &wdog0;
@@ -29,6 +28,20 @@
 	gpios = <&gpioa GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
 };
 
+&sw_sensor_enable {
+	enable-gpios = <&gpioc GECKO_PIN(6) GPIO_ACTIVE_HIGH>;
+};
+
+
+&sw_mic_enable {
+	enable-gpios = <&gpioc GECKO_PIN(7) GPIO_ACTIVE_HIGH>;
+};
+
+
+&sw_imu_enable {
+	enable-gpios = <&gpiob GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
+};
+
 &button0 {
 	gpios = <&gpiob GECKO_PIN(3) GPIO_ACTIVE_LOW>;
 };
diff --git a/boards/arm/efr32_thunderboard/efr32bg27_brd2602a_defconfig b/boards/arm/efr32_thunderboard/efr32bg27_brd2602a_defconfig
@@ -20,3 +20,6 @@ CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=76800000
 CONFIG_GECKO_BURTC_TIMER=y
 CONFIG_CMU_BURTCCLK_LFXO=y
 CONFIG_SYS_CLOCK_TICKS_PER_SEC=1024
+
+CONFIG_REGULATOR=y
+CONFIG_SI7210=y
diff --git a/boards/arm/efr32_thunderboard/thunderboard.dtsi b/boards/arm/efr32_thunderboard/thunderboard.dtsi
@@ -18,10 +18,6 @@
 			gpios = <&gpiob GECKO_PIN(0) GPIO_ACTIVE_HIGH>;
 			label = "LED 0";
 		};
-		/* Set this pin to high to enable I2C to board sensors */
-		i2c_pin: pin {
-			gpios = <&gpioa GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
-		};
 	};
 
 	buttons {
@@ -37,10 +33,28 @@
 		gpios = <&gpioa GECKO_PIN(5) GPIO_ACTIVE_LOW>;
 	};
 
-	spi_enable: peripheral-enable {
+	/* GPIOs that power up different sensors */
+	sw_sensor_enable: gpio_switch_0 {
 		compatible = "regulator-fixed";
-		regulator-name = "spi-enable-ctrl";
-		enable-gpios = <&gpiob GECKO_PIN(4) GPIO_ACTIVE_HIGH>;
+		status = "okay";
+		regulator-name = "sw_sensor_enable";
+		startup-delay-us = <100000>;
+		/* Always on since sensor drivers won't enable it automatically */
+		regulator-always-on;
+	};
+
+	sw_mic_enable: gpio_switch_1 {
+		compatible = "regulator-fixed";
+		status = "okay";
+		regulator-name = "sw_mic_enable";
+		startup-delay-us = <100000>;
+	};
+
+	sw_imu_enable: gpio_switch_2 {
+		compatible = "regulator-fixed";
+		status = "okay";
+		regulator-name = "sw_imu_enable";
+		startup-delay-us = <100000>;
 	};
 
 };
@@ -127,6 +141,12 @@
 	location-sda = <GECKO_LOCATION(3) GECKO_PORT_D GECKO_PIN(2)>;
 	location-scl = <GECKO_LOCATION(3) GECKO_PORT_D GECKO_PIN(3)>;
 	status = "okay";
+
+	si7210@30 {
+		compatible = "silabs,si7210";
+		status = "okay";
+		reg = <0x30>;
+	};
 };
 
 &adc0 {