From 75ab92b077602734458f0a77e19a3599be29b93b Mon Sep 17 00:00:00 2001
From: Giedrius <giedrius@blokas.io>
Date: Thu, 21 Nov 2024 08:05:49 +0000
Subject: [PATCH] Adding pimidi-overlay.dts
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Signed-off-by: Giedrius Trainavičius <giedrius@blokas.io>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 8 +++
arch/arm/boot/dts/overlays/pimidi-overlay.dts | 54 +++++++++++++++++++
3 files changed, 63 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/pimidi-overlay.dts
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -203,6 +203,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
pifi-dac-zero.dtbo \
pifi-mini-210.dtbo \
piglow.dtbo \
+ pimidi.dtbo \
pineboards-hat-ai.dtbo \
pineboards-hatdrive-poe-plus.dtbo \
piscreen.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -3701,6 +3701,14 @@ Load: dtoverlay=piglow
Params: <None>
+Name: pimidi
+Info: Configures the Blokas Labs Pimidi card
+Load: dtoverlay=pimidi,<param>=<val>
+Params: sel The position used for the sel rotary switch.
+ Each unit in the stack must be set on a unique
+ position. If param is omitted, sel=0 is assumed.
+
+
Name: pineboards-hat-ai
Info: Pineboards Hat Ai! overlay for the Google Coral Edge TPU
Load: dtoverlay=pineboards-hat-ai
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/pimidi-overlay.dts
@@ -0,0 +1,54 @@
+/*
+ * Pimidi Linux kernel module.
+ * Copyright (C) 2017-2024 Vilniaus Blokas UAB, https://blokas.io/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&i2c_arm>;
+ __overlay__ {
+ status = "okay";
+ clock-frequency=<1000000>;
+
+ pimidi_ctrl: pimidi_ctrl@20 {
+ compatible = "blokaslabs,pimidi";
+
+ reg = <0x20>;
+ status = "okay";
+
+ interrupt-parent = <&gpio>;
+ interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-names = "data_ready";
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ data-ready-gpios = <&gpio 23 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ reset-gpios = <&gpio 22 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
+ };
+ };
+ };
+
+ __overrides__ {
+ sel = <&pimidi_ctrl>,"reg:0{0=0x20,1=0x21,2=0x22,3=0x23}",
+ <&pimidi_ctrl>,"data-ready-gpios:4{0=23,1=5,2=6,3=27}",
+ <&pimidi_ctrl>,"interrupts:0{0=23,1=5,2=6,3=27}";
+ };
+};