mirror of https://github.com/hak5/openwrt.git
131 lines
4.5 KiB
Diff
131 lines
4.5 KiB
Diff
From 7b82355fa657220c9d5e72f0aa5228f0d76819fa Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Mon, 5 Oct 2015 10:47:45 +0100
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Subject: [PATCH 197/203] BCM270X_DT: Add at86rf233 overlay
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Add an overlay to support the Atmel AT86RF233 WPAN transceiver on spi0.0.
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See: https://github.com/raspberrypi/linux/issues/1151
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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 | 21 +++++++--
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arch/arm/boot/dts/overlays/at86rf233-overlay.dts | 54 ++++++++++++++++++++++++
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3 files changed, 72 insertions(+), 4 deletions(-)
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create mode 100644 arch/arm/boot/dts/overlays/at86rf233-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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@@ -13,6 +13,7 @@ ifeq ($(CONFIG_ARCH_BCM2835),y)
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endif
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dtb-$(RPI_DT_OVERLAYS) += ads7846-overlay.dtb
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+dtb-$(RPI_DT_OVERLAYS) += at86rf233-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb
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dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
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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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@@ -69,13 +69,14 @@ DT parameters:
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Parameters always have default values, although in some cases (e.g. "w1-gpio")
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it is necessary to provided multiple overlays in order to get the desired
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-behaviour. See the list of overlays below for a description of the parameters and their defaults.
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+behaviour. See the list of overlays below for a description of the parameters
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+and their defaults.
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The Overlay and Parameter Reference
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===================================
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-N.B. When editing this file, please preserve the indentation levels to make it simple to parse
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-programmatically. NO HARD TABS.
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+N.B. When editing this file, please preserve the indentation levels to make it
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+simple to parse programmatically. NO HARD TABS.
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Name: <The base DTB>
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@@ -149,7 +150,7 @@ Name: ads7846
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Info: ADS7846 Touch controller
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Load: dtoverlay=ads7846,<param>=<val>
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Params: cs SPI bus Chip Select (default 1)
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- speed SPI bus speed (default 2Mhz, max 3.25MHz)
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+ speed SPI bus speed (default 2MHz, max 3.25MHz)
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penirq GPIO used for PENIRQ. REQUIRED
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penirq_pull Set GPIO pull (default 0=none, 2=pullup)
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swapxy Swap x and y axis
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@@ -170,6 +171,18 @@ Params: cs SPI bus
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www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
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+Name: at86rf233
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+Info: Configures the Atmel AT86RF233 802.15.4 low-power WPAN transceiver,
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+ connected to spi0.0
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+Load: dtoverlay=at86rf233,<param>=<val>
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+Params: interrupt GPIO used for INT (default 23)
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+ reset GPIO used for Reset (default 24)
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+ sleep GPIO used for Sleep (default 25)
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+ speed SPI bus speed in Hz (default 750000)
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+ trim Fine tuning of the internal capacitance
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+ arrays (0=+0pF, 15=+4.5pF, default 15)
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+
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+
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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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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/at86rf233-overlay.dts
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@@ -0,0 +1,54 @@
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+/dts-v1/;
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+/plugin/;
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+
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+/* Overlay for Atmel AT86RF233 IEEE 802.15.4 WPAN transceiver on spi0.0 */
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+
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+/ {
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+ compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
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+
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+ fragment@0 {
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+ target = <&spi0>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ status = "okay";
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+
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+ spidev@0{
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+ status = "disabled";
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+ };
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+
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+ lowpan0: at86rf233@0 {
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+ compatible = "atmel,at86rf233";
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+ reg = <0>;
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+ interrupt-parent = <&gpio>;
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+ interrupts = <23 4>; /* active high */
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+ reset-gpio = <&gpio 24 1>;
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+ sleep-gpio = <&gpio 25 1>;
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+ spi-max-frequency = <7500000>;
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+ xtal-trim = /bits/ 8 <0xf>;
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+ };
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+ };
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+ };
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+
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+ fragment@1 {
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+ target = <&gpio>;
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+ __overlay__ {
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+ lowpan0_pins: lowpan0_pins {
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+ brcm,pins = <23 24 25>;
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+ brcm,function = <0 1 1>; /* in out out */
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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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+ interrupt = <&lowpan0>, "interrupts:0",
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+ <&lowpan0_pins>, "brcm,pins:0";
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+ reset = <&lowpan0>, "reset-gpio:4",
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+ <&lowpan0_pins>, "brcm,pins:4";
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+ sleep = <&lowpan0>, "sleep-gpio:4",
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+ <&lowpan0_pins>, "brcm,pins:8";
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+ speed = <&lowpan0>, "spi-max-frequency:0";
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+ trim = <&lowpan0>, "xtal-trim.0";
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+ };
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+};
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