boards: st: Add I3G4250D gyroscope for stm32f411e_disco board

Add support for I3G4250D gyroscope that is present on D revisions
of the stm32f411e_disco board.

Signed-off-by: John Gietzen <[email protected]>

Author: otac0n

boards/st/stm32f411e_disco/doc/index.rst

@@ -77,6 +77,7 @@ Default Zephyr Peripheral Mapping:
 - LD4 : PD12 (PWM4 CH1)
 - LD5 : PD14 (PWM4 CH3)
 - LD6 : PD15 (PWM4 CH4)
+- SPI1: PE3, PA5, PA6, PA7 (CS, SCK, MISO, MOSI)
 
 System Clock
 ============

boards/st/stm32f411e_disco/stm32f411e_disco.dts

@@ -88,6 +88,7 @@
 		pwm-led3 = &blue_pwm_led;
 		magn0 = &lsm303agr_magn;
 		accel0 = &lsm303agr_accel;
+		gyro0 = &i3g4250d;
 		mcuboot-button0 = &user_button;
 		mcuboot-led0 = &orange_led_3;
 		die-temp0 = &die_temp;
@@ -158,6 +159,19 @@
 	};
 };
 
+&spi1 {
+	pinctrl-0 = <&spi1_sck_pa5 &spi1_miso_pa6 &spi1_mosi_pa7>;
+	pinctrl-names = "default";
+	status = "okay";
+	cs-gpios = <&gpioe 3 GPIO_ACTIVE_LOW>;
+
+	i3g4250d: i3g4250d@0 {
+		compatible = "st,i3g4250d";
+		reg = <0>;
+		spi-max-frequency = <1000000>;
+	};
+};
+
 &usart2 {
 	pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
 	pinctrl-names = "default";

boards/st/stm32f411e_disco/stm32f411e_disco_stm32f411xe_B.overlay

@@ -8,6 +8,7 @@
 	aliases {
 		/delete-property/ magn0;
 		accel0 = &lsm303dlhc_accel;
+		/delete-property/ gyro0;
 	};
 };
 
@@ -29,3 +30,8 @@
 			  <&gpioe 5 GPIO_ACTIVE_HIGH>;
 	};
 };
+
+/* The B revision has the l3gd20 instead of i3g4250d, but no test board is available. */
+&spi1 {
+	/delete-node/ i3g4250d@0;
+};