ccimx93: add xbee support

ConnectCore 93 DVK only connects the XBee reset line (XBEE_RESET_N_GPIO) but not
the sleep request (XBEE_SLEEP_RQ_GPIO)

It also reworks the 'xbee-init' script to support empty reset
(XBEE_RESET_N_GPIO) or sleep request (XBEE_SLEEP_RQ_GPIO) values.

https://onedigi.atlassian.net/browse/DEL-8375

Signed-off-by: Tatiana Leon <Tatiana.Leon@digi.com>

meta-digi-arm/conf/machine/ccimx93-dvk.conf

@@ -26,6 +26,11 @@ IMAGE_BOOT_FILES:append:use-nxp-bsp = " \
 "
 WKS_FILE_DEPENDS:append = " imx-m33-demos"
 
+# XBee
+XBEE_RESET_N_GPIO ?= "gpio2@19"
+XBEE_SLEEP_RQ_GPIO ?= ""
+XBEE_TTY ?= "ttyLP3"
+
 # Image FS types
 IMAGE_FSTYPES ?= '${@bb.utils.contains("IMAGE_FEATURES", "read-only-rootfs", \
 				       "boot.vfat recovery.vfat squashfs tar.bz2", \

meta-digi-arm/conf/machine/include/ccimx93.inc

@@ -39,6 +39,10 @@ SPL_BINARY = "spl/u-boot-spl.bin"
 # Set ATF platform name
 ATF_PLATFORM = "imx93"
 
+MACHINE_EXTRA_RDEPENDS += " \
+    xbee-init \
+"
+
 # TrustFence
 TRUSTFENCE_SIGN_MODE = "AHAB"
 

meta-digi-dey/recipes-connectivity/xbee/xbee.bb

@@ -42,4 +42,4 @@ SYSTEMD_PACKAGES = "${PN}-init"
 SYSTEMD_SERVICE:${PN}-init = "xbee-init.service"
 
 PACKAGE_ARCH = "${MACHINE_ARCH}"
-COMPATIBLE_MACHINE = "(ccimx8x|ccimx8m)"
+COMPATIBLE_MACHINE = "(ccimx8x|ccimx8m|ccimx93)"

meta-digi-dey/recipes-connectivity/xbee/xbee/xbee-init

@@ -4,35 +4,37 @@
 XBEE_RESET_N_GPIO="##XBEE_RESET_N_GPIO##"
 XBEE_SLEEP_RQ_GPIO="##XBEE_SLEEP_RQ_GPIO##"
 
-xbee_init() {
-	# Set low XBEE_SLEEP_RQ
-	gpioset ${3} ${4}=0
-
+# 1=chip name
+# 2=gpio offset
+xbee_reset() {
 	# Power cycle XBEE_RESET_N
-	gpioset ${1} ${2}=0
-	gpioset ${1} ${2}=1
+	gpioset "${1}" "${2}"=0
+	gpioset "${1}" "${2}"=1
+}
+
+# 1=chip name
+# 2=gpio offset
+xbee_no_sleep() {
+	# Set low XBEE_SLEEP_RQ
+	gpioset "${1}" "${2}"=0
 }
 
 xbee_iterate_list() {
-	i=0
+	for SLEEP in $(echo ${XBEE_SLEEP_RQ_GPIO} | sed "s/,/ /g"); do
+		# Do not quote command expansion (function expects two parameters)
+		xbee_no_sleep $(echo "${SLEEP}" | sed "s/@/ /g")
+	done
+
 	for RESET in $(echo ${XBEE_RESET_N_GPIO} | sed "s/,/ /g"); do
-		j=0
-		for SLEEP in $(echo ${XBEE_SLEEP_RQ_GPIO} | sed "s/,/ /g"); do
-			if [ "${i}" = "${j}" ]; then
-				if [ "${1}" = "start" ]; then
-					xbee_init $(echo ${RESET} | sed "s/@/ /g") $(echo ${SLEEP} | sed "s/@/ /g")
-				fi
-			fi
-			j="$((j + 1))"
-		done
-		i="$((i + 1))"
+		# Do not quote command expansion (function expects two parameters)
+		xbee_reset $(echo "${RESET}" | sed "s/@/ /g")
 	done
 }
 
 case "$1" in
 	start)
 		echo -n "Starting XBee hardware: "
-		xbee_iterate_list start
+		xbee_iterate_list
 		echo "done."
 		;;
 	stop)