From 3e4f2a3dc3555be055d1ae6f1ab91c246438008c Mon Sep 17 00:00:00 2001
From: KemoNine <mcrosson@kemonine.info>
Date: Tue, 5 Jan 2021 21:44:47 +0000
Subject: [PATCH] feat(tg4x): Add underglow support for tg4x + nice_nano

---
 app/boards/shields/tg4x/boards/nice_nano.conf |  7 ++++
 .../shields/tg4x/boards/nice_nano.overlay     | 34 +++++++++++++++++++
 2 files changed, 41 insertions(+)
 create mode 100644 app/boards/shields/tg4x/boards/nice_nano.conf
 create mode 100644 app/boards/shields/tg4x/boards/nice_nano.overlay

diff --git a/app/boards/shields/tg4x/boards/nice_nano.conf b/app/boards/shields/tg4x/boards/nice_nano.conf
new file mode 100644
index 00000000..7b077948
--- /dev/null
+++ b/app/boards/shields/tg4x/boards/nice_nano.conf
@@ -0,0 +1,7 @@
+# Copyright (c) 2020 The ZMK Contributors
+# SPDX-License-Identifier: MIT
+
+# Enable underglow
+CONFIG_ZMK_RGB_UNDERGLOW=y
+# Use the STRIP config specific to the LEDs you're using
+CONFIG_WS2812_STRIP=y
\ No newline at end of file
diff --git a/app/boards/shields/tg4x/boards/nice_nano.overlay b/app/boards/shields/tg4x/boards/nice_nano.overlay
new file mode 100644
index 00000000..60492bec
--- /dev/null
+++ b/app/boards/shields/tg4x/boards/nice_nano.overlay
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2020 The ZMK Contributors
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+&spi1 {
+	compatible = "nordic,nrf-spim";
+	status = "okay";
+	mosi-pin = <8>;
+	// Unused pins, needed for SPI definition, but not used by the ws2812 driver itself.
+	sck-pin = <5>;
+	miso-pin = <7>;
+
+	led_strip: ws2812@0 {
+		compatible = "worldsemi,ws2812-spi";
+		label = "WS2812";
+
+		/* SPI */
+		reg = <0>; /* ignored, but necessary for SPI bindings */
+		spi-max-frequency = <4000000>;
+
+		/* WS2812 */
+		chain-length = <7>; /* number of LEDs */
+		spi-one-frame = <0x70>;
+		spi-zero-frame = <0x40>;
+	};
+};
+
+/ {
+	chosen {
+		zmk,underglow = &led_strip;
+	};
+};