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From 09e843542826ad1241d77d5ef9abb2bce21a0984 Mon Sep 17 00:00:00 2001
From: Florin Sarbu <florin@resin.io>
Date: Mon, 30 Apr 2018 09:11:52 +0200
Subject: [PATCH 290/454] overlays: Add support for Balena Fin board
Signed-off-by: Florin Sarbu <florin@resin.io>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 7 ++
.../boot/dts/overlays/balena-fin-overlay.dts | 79 +++++++++++++++++++
3 files changed, 87 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/balena-fin-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -17,6 +17,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
audioinjector-addons.dtbo \
audioinjector-wm8731-audio.dtbo \
audremap.dtbo \
+ balena-fin.dtbo \
bmp085_i2c-sensor.dtbo \
dht11.dtbo \
dionaudio-loco.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -404,6 +404,13 @@ Params: swap_lr Reverse
(default off)
+Name: balena-fin
+Info: Overlay that enables WiFi, Bluetooth and the GPIO expander on the
+ Balena Fin board.
+Load: dtoverlay=balena-fin
+Params: <None>
+
+
Name: bmp085_i2c-sensor
Info: This overlay is now deprecated - see i2c-sensor
Load: dtoverlay=bmp085_i2c-sensor
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
@@ -0,0 +1,79 @@
+/dts-v1/;
+/plugin/;
+
+/{
+ compatible = "brcm,bcm2708";
+
+ fragment@0 {
+ target = <&mmc>;
+ sdio_wifi: __overlay__ {
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdio_pins>;
+ bus-width = <4>;
+ brcm,overclock-50 = <35>;
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target = <&gpio>;
+ __overlay__ {
+ sdio_pins: sdio_pins {
+ brcm,pins = <34 35 36 37 38 39>;
+ brcm,function = <7>; /* ALT3 = SD1 */
+ brcm,pull = <0 2 2 2 2 2>;
+ };
+
+ power_ctrl_pins: power_ctrl_pins {
+ brcm,pins = <40>;
+ brcm,function = <1>; // out
+ };
+ };
+ };
+
+ fragment@2 {
+ target-path = "/";
+ __overlay__ {
+ // We should investigate how to switch to mmc-pwrseq-sd8787
+ // Currently that module requires two GPIOs to function since it
+ // targets a slightly different chip
+ power_ctrl: power_ctrl {
+ compatible = "gpio-poweroff";
+ gpios = <&gpio 40 1>;
+ force;
+ };
+
+ i2c_soft: i2c@0 {
+ compatible = "i2c-gpio";
+ gpios = <&gpio 43 0 /* sda */ &gpio 42 0 /* scl */>;
+ i2c-gpio,delay-us = <2>; /* ~100 kHz */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+ };
+ };
+
+ fragment@3 {
+ target = <&i2c_soft>;
+ __overlay__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ gpio_expander: gpio_expander@20 {
+ compatible = "nxp,pca9554";
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x20>;
+ status = "okay";
+ };
+
+ // rtc clock
+ ds1307: ds1307@68 {
+ compatible = "maxim,ds1307";
+ reg = <0x68>;
+ status = "okay";
+ };
+ };
+ };
+};
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