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93 lines
3.2 KiB
Diff
93 lines
3.2 KiB
Diff
From ec94d922b57bb7d6586eaf1e1af02e9383680d15 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Mon, 5 Dec 2016 17:10:44 +0000
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Subject: [PATCH] BCM270X_DT: Add i2c-sensor overlay
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The i2c-sensor overlay is a container for various pressure and
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temperature sensors, currently bmp085 and bmp280. The standalone
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bmp085_i2c-sensor overlay is now deprecated.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/Makefile | 1 +
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arch/arm/boot/dts/overlays/README | 12 ++++++--
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arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts | 34 +++++++++++++++++++++++
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3 files changed, 45 insertions(+), 2 deletions(-)
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create mode 100644 arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
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--- a/arch/arm/boot/dts/overlays/Makefile
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+++ b/arch/arm/boot/dts/overlays/Makefile
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@@ -42,6 +42,7 @@ dtbo-$(RPI_DT_OVERLAYS) += i2c-gpio.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c-mux.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c-pwm-pca9685a.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c-rtc.dtbo
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+dtbo-$(RPI_DT_OVERLAYS) += i2c-sensor.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c0-bcm2708.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2c1-bcm2708.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += i2s-gpio28-31.dtbo
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -283,8 +283,7 @@ Params: swap_lr Reverse
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Name: bmp085_i2c-sensor
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-Info: Configures the BMP085/BMP180 digital barometric pressure and temperature
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- sensors from Bosch Sensortec
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+Info: This overlay is now deprecated - see i2c-sensor
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Load: dtoverlay=bmp085_i2c-sensor
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Params: <None>
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@@ -536,6 +535,15 @@ Params: abx80x Select o
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source
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+Name: i2c-sensor
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+Info: Adds support for a number of I2C barometric pressure and temperature
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+ sensors on i2c_arm
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+Load: dtoverlay=i2c-sensor,<param>=<val>
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+Params: bmp085 Select the Bosch sensortronic BMP085
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+
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+ bmp280 Select the Bosch sensortronic BMP280
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+
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+
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Name: i2c0-bcm2708
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Info: Enable the i2c_bcm2708 driver for the i2c0 bus. Not all pin combinations
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are usable on all platforms.
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/i2c-sensor-overlay.dts
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@@ -0,0 +1,34 @@
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+// Definitions for a few digital barometric pressure and temperature sensors
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+/dts-v1/;
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+/plugin/;
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+
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+/ {
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+ compatible = "brcm,bcm2708";
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+
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+ fragment@0 {
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+ target = <&i2c_arm>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ bmp085: bmp085@77 {
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+ compatible = "bosch,bmp085";
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+ reg = <0x77>;
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+ default-oversampling = <3>;
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+ status = "disable";
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+ };
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+
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+ bmp280: bmp280@76 {
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+ compatible = "bosch,bmp280";
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+ reg = <0x76>;
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+ status = "disable";
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+ };
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+ };
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+ };
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+
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+ __overrides__ {
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+ bmp085 = <&bmp085>,"status";
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+ bmp280 = <&bmp280>,"status";
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+ };
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+};
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