linux-kernel - [PATCH v2 2/3] ARM: dts: stm32: enable l3gd20 on stm32429-disco board

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Message-Id: <1589269010-18472-3-git-send-email-dillon.minfei@gmail.com>
Date:   Tue, 12 May 2020 15:36:49 +0800
From:   dillon.minfei@...il.com
To:     robh+dt@...nel.org, mcoquelin.stm32@...il.com,
        alexandre.torgue@...com, broonie@...nel.org, p.zabel@...gutronix.de
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-spi@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com, dillonhua@...il.com,
        dillon.minfei@...il.com
Subject: [PATCH v2 2/3] ARM: dts: stm32: enable l3gd20 on stm32429-disco board

From: dillon min <dillon.minfei@...il.com>

L3gd20, st mems motion sensor, 3-axis digital output gyroscope,
connect to stm32f429 via spi5

Signed-off-by: dillon min <dillon.minfei@...il.com>
---

Hi Alexandre,

V2:
    1, insert blank line at stm32f420-disco.dts line 143
    2, add more description about l3gd20 in commit message

V1:
    enable l3gd20 dts binding on stm32f429-disco

thanks.

dillon,

 arch/arm/boot/dts/stm32f429-disco.dts | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f429-disco.dts b/arch/arm/boot/dts/stm32f429-disco.dts
index 30c0f67..1bfb903 100644
--- a/arch/arm/boot/dts/stm32f429-disco.dts
+++ b/arch/arm/boot/dts/stm32f429-disco.dts
@@ -49,6 +49,8 @@
 #include "stm32f429.dtsi"
 #include "stm32f429-pinctrl.dtsi"
 #include <dt-bindings/input/input.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "STMicroelectronics STM32F429i-DISCO board";
@@ -127,3 +129,26 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&spi5 {
+	status = "okay";
+	pinctrl-0 = <&spi5_pins>;
+	pinctrl-names = "default";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	cs-gpios = <&gpioc 1 GPIO_ACTIVE_LOW>;
+	dmas = <&dma2 3 2 0x400 0x0>,
+	       <&dma2 4 2 0x400 0x0>;
+	dma-names = "rx", "tx";
+
+	l3gd20: l3gd20@0 {
+		compatible = "st,l3gd20-gyro";
+		spi-max-frequency = <10000000>;
+		st,drdy-int-pin = <2>;
+		interrupt-parent = <&gpioa>;
+		interrupts = <1 IRQ_TYPE_EDGE_RISING>,
+				<2 IRQ_TYPE_EDGE_RISING>;
+		reg = <0>;
+		status = "okay";
+	};
+};
-- 
2.7.4