From 32b8f0c20331a3aff6b6e77a0576b755fdcfc2d6 Mon Sep 17 00:00:00 2001
From: Tobias Poganiuch <tobias.poganiuch@garz-fricke.com>
Date: Mon, 11 Jul 2022 13:27:15 +0200
Subject: [PATCH] fng-install:rtc: Added RTC detection for the TANARO
The TANARO will be produced with one of two RTC variants.
We detect the RTC by querying the first register during the
post-install and activate one of two devicetree overlays.
BCS 746-000877
---
recipes-bsp/fng-install/prepare-image.bb | 10 +++++
.../prepare-image/gf-prepare-rtc.sh | 43 +++++++++++++++++++
2 files changed, 53 insertions(+)
create mode 100644 recipes-bsp/fng-install/prepare-image/gf-prepare-rtc.sh
diff --git a/recipes-bsp/fng-install/prepare-image.bb b/recipes-bsp/fng-install/prepare-image.bb
index 182663e0..07d8c279 100644
--- a/recipes-bsp/fng-install/prepare-image.bb
+++ b/recipes-bsp/fng-install/prepare-image.bb
@@ -7,6 +7,7 @@ LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/Apache-2.0;md5=89aea4e17d99a7ca
RDEPENDS_${PN} = " \
fng-install-postinstallation \
sharedconf \
+ i2c-tools \
"
SRC_URI = " \
@@ -22,6 +23,10 @@ SRC_URI_append_mx6 = " \
file://gf-prepare-xml2dto.sh \
"
+SRC_URI_append_mx8 = " \
+ file://gf-prepare-rtc.sh \
+"
+
do_configure_append_fng () {
# Exchange the bootpartitions for Flash-N-Go System
sed -i ${WORKDIR}/gf-prepare-kernel.sh -e 's|^BOOTPARTITIONS=".*|BOOTPARTITIONS="/dev/disk/by-label/Flash-N-Go /dev/mmcblk0p1 /dev/mmcblk1p1"|'
@@ -48,3 +53,8 @@ do_install_append_mx6() {
ln -s ${sbindir}/gf-prepare-dt.sh ${D}${sysconfdir}/fng-postinstall/12-gf-prepare-dt
ln -s ${sbindir}/gf-prepare-xml2dto.sh ${D}${sysconfdir}/fng-postinstall/13-gf-prepare-xml2dto
}
+
+do_install_append_mx8() {
+ install -m 0755 ${WORKDIR}/gf-prepare-rtc.sh ${D}${sbindir}
+ ln -s ${sbindir}/gf-prepare-rtc.sh ${D}${sysconfdir}/fng-postinstall/14-gf-prepare-rtc
+}
diff --git a/recipes-bsp/fng-install/prepare-image/gf-prepare-rtc.sh b/recipes-bsp/fng-install/prepare-image/gf-prepare-rtc.sh
new file mode 100644
index 00000000..b73d042d
--- /dev/null
+++ b/recipes-bsp/fng-install/prepare-image/gf-prepare-rtc.sh
@@ -0,0 +1,43 @@
+#!/bin/sh
+
+# shellcheck source=../../../recipes-guf/sharedconf/sharedconf/gf-functions.sh
+if ! . /usr/sbin/gf-functions.sh; then
+ echo "Unable to include gf-functions"
+fi
+# shellcheck source=./gf-prepare-common.sh
+if ! . /usr/sbin/gf-prepare-common.sh; then
+ echo "Unable to include gf-prepare-common"
+fi
+
+poll_rtc() {
+ if i2cget -y 2 "$1" 0x00 2>&1 | grep -E '.*0x.*|.*Device or resource busy.*'; then
+ echo "Device found at address $1"
+ return 0
+ else
+ echo "No device found at address $1"
+ return 1
+ fi
+}
+
+# Get the directory containing the bootfiles
+mount_bootpartition BOOTFILES_DIR
+
+# Change into the boot directory
+cd "$BOOTFILES_DIR" || exit 1
+
+# RX8803
+if poll_rtc 0x32; then
+ append_overlay "rx8803-overlay.dtb"
+else
+ # PCF8563
+ if poll_rtc 0x51; then
+ append_overlay "pcf8563-overlay.dtb"
+ else
+ echo "Error: Unable to find any valid device"
+ exit 1
+ fi
+fi
+
+exit 0
+
+# vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4
--
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