Merge pull request #75 from OnionIoT/Issue-53

[Issue-53]: add one wire device tree overlay

omega2-base/Makefile

@@ -1,6 +1,6 @@
 # Copyright (C) 2021 Onion Corporation
 #
-# Author: Lazar Demin  <lazar@onion.io>
+# Author: Lazar Demin  <lazar@onioniot.com>
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -9,7 +9,7 @@
 include $(TOPDIR)/rules.mk
 PKG_NAME:=omega2-base
 PKG_VERSION:=22.03.5
-PKG_RELEASE:=20231031
+PKG_RELEASE:=20231109
 
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/$(PKG_NAME)

onion-dt-overlay/Makefile

@@ -65,9 +65,19 @@ define BuildDtbo
 	$(INSTALL_DATA) $(PKG_BUILD_DIR)/src/$(1).dtbo $$(1)/lib/firmware/device-tree/overlays/$(1).dtbo
   endef
 
+  define Package/onion-dt-overlay-$(1)/postinst
+	#!/bin/sh
+
+	if [ -z "$${IPKG_INSTROOT}" ]; then
+		mkdir -p /sys/kernel/config/device-tree/overlays/$(1)
+		cat /lib/firmware/device-tree/overlays/$(1).dtbo > /sys/kernel/config/device-tree/overlays/$(1)/dtbo
+	fi
+  endef
+
   $$(eval $$(call BuildPackage,onion-dt-overlay-$(1)))
 
 endef
 
 $(eval $(call BuildPackage,onion-dt-overlay))
 $(eval $(call BuildDtbo,sw-spi,,Provides SW SPI))
+$(eval $(call BuildDtbo,w1-gpio,+kmod-w1 +kmod-w1-master-gpio +kmod-w1-slave-therm,Provides One Wire GPIO))

onion-dt-overlay/src/w1-gpio.dts

@@ -0,0 +1,16 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	fragment@0 {
+		target-path = "/";
+
+		__overlay__ {
+			onewire:onewire {
+				compatible = "w1-gpio";
+				gpios = <&gpio 19 0>;
+				status = "okay";
+			};
+		};
+	};
+};