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