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From 6cafe647492605d21c2418b6261bf3182b9229f2 Mon Sep 17 00:00:00 2001
From: Zahari Petkov <zahari@balena.io>
Date: Fri, 8 Feb 2019 13:03:38 +0200
Subject: [PATCH] overlays: balenaFin v1.1.0 carrier board update
A backward compatible update for the balenaFin carrier board for the
Raspberry Pi Compute Module 3/3+ Lite.
The updated overlay includes:
* support for the newly introduced RGB LEDs
* i2c-gpio and SDIO improvements
* DT based Marvell 88W8887 configuration
Signed-off-by: Zahari Petkov <zahari@balena.io>
---
arch/arm/boot/dts/overlays/README | 2 +-
.../boot/dts/overlays/balena-fin-overlay.dts | 46 ++++++++++++++++++-
2 files changed, 45 insertions(+), 3 deletions(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -472,7 +472,7 @@ Params: swap_lr Reverse
Name: balena-fin
Info: Overlay that enables WiFi, Bluetooth and the GPIO expander on the
- Balena Fin board.
+ balenaFin carrier board for the Raspberry Pi Compute Module 3/3+ Lite.
Load: dtoverlay=balena-fin
Params: <None>
--- a/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
+++ b/arch/arm/boot/dts/overlays/balena-fin-overlay.dts
@@ -11,6 +11,7 @@
pinctrl-0 = <&sdio_pins>;
bus-width = <4>;
brcm,overclock-50 = <35>;
+ non-removable;
status = "okay";
};
};
@@ -34,7 +35,8 @@
fragment@2 {
target-path = "/";
__overlay__ {
- // We should investigate how to switch to mmc-pwrseq-sd8787
+ // We should switch to mmc-pwrseq-sd8787 after making it
+ // compatible with sd8887
// Currently that module requires two GPIOs to function since it
// targets a slightly different chip
power_ctrl: power_ctrl {
@@ -46,10 +48,21 @@
i2c_soft: i2c@0 {
compatible = "i2c-gpio";
gpios = <&gpio 43 0 /* sda */ &gpio 42 0 /* scl */>;
- i2c-gpio,delay-us = <2>; /* ~100 kHz */
+ i2c-gpio,delay-us = <5>;
+ i2c-gpio,scl-open-drain;
+ i2c-gpio,sda-open-drain;
#address-cells = <1>;
#size-cells = <0>;
};
+
+ sd8xxx-wlan {
+ drvdbg = <0x6>;
+ drv_mode = <0x1>;
+ cfg80211_wext = <0xf>;
+ sta_name = "wlan";
+ wfd_name = "p2p";
+ cal_data_cfg = "none";
+ };
};
};
@@ -74,6 +87,35 @@
reg = <0x68>;
status = "okay";
};
+
+ // RGB LEDs (>= v1.1.0)
+ pca9633: pca9633@62 {
+ compatible = "nxp,pca9633";
+ reg = <0x62>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ red@0 {
+ label = "red";
+ reg = <0>;
+ linux,default-trigger = "none";
+ };
+ green@1 {
+ label = "green";
+ reg = <1>;
+ linux,default-trigger = "none";
+ };
+ blue@2 {
+ label = "blue";
+ reg = <2>;
+ linux,default-trigger = "none";
+ };
+ unused@3 {
+ label = "unused";
+ reg = <3>;
+ linux,default-trigger = "none";
+ };
+ };
};
};
};
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