linux-sysmocom: Build the watchdog into the kernel

We want to enable the watchdog in the bootloader already and
for this to be failsafe we need to have a kernel that can boot
and get ethernet without any additional modules. Now systemd
would not be able to trigger the watchdog and the system would
reboot within 60 seconds. I am not sure how the kernel upgrade
will go and we need to try this.

Related: SYS#374

conf/machine/include/sysmobts.inc

@@ -22,7 +22,6 @@ MACHINE_ESSENTIAL_EXTRA_RDEPENDS = "\
 	busybox-ifplugd \
 	${@['watchdog', ''][d.getVar('VIRTUAL-RUNTIME_init_manager', True) == 'systemd']} \
 	kernel \
-	kernel-module-davinci-wdt \
 	kernel-module-dspdl \
 	kernel-module-dspdl-dm644x \
 	kernel-module-fpgadl \

recipes-bsp/linux/files/sysmobts-v1/defconfig

@@ -1287,7 +1287,7 @@ CONFIG_WATCHDOG=y
 #
 # CONFIG_SOFT_WATCHDOG is not set
 # CONFIG_DW_WATCHDOG is not set
-CONFIG_DAVINCI_WATCHDOG=m
+CONFIG_DAVINCI_WATCHDOG=y
 # CONFIG_MAX63XX_WATCHDOG is not set
 CONFIG_SSB_POSSIBLE=y
 

recipes-bsp/linux/files/sysmobts-v2/defconfig

@@ -1300,7 +1300,7 @@ CONFIG_WATCHDOG=y
 #
 # CONFIG_SOFT_WATCHDOG is not set
 # CONFIG_DW_WATCHDOG is not set
-CONFIG_DAVINCI_WATCHDOG=m
+CONFIG_DAVINCI_WATCHDOG=y
 # CONFIG_MAX63XX_WATCHDOG is not set
 CONFIG_SSB_POSSIBLE=y
 

recipes-bsp/linux/linux-sysmocom_3.2.bb

@@ -19,7 +19,7 @@ SRCREV_sysmocom-odu = "aadf22be50ac2abb2a9437b9ad3bba4ccdca540b"
 BRANCH_sysmocom-odu = "sob-odu/linux-3.2.63"
 LINUX_VERSION_sysmocom-odu = "3.2.63"
 
-PR = "r37"
+PR = "r38"
 PV = "${LINUX_VERSION}+git${SRCPV}"
 
 SRC_URI = "git://git.sysmocom.de/sysmo-bts/linux.git;protocol=git;branch=${BRANCH} \
@@ -42,7 +42,6 @@ do_configure() {
 
 # autoload defaults (alphabetically sorted)
 module_autoload_davinci_mmc = "davinci_mmc"
-module_autoload_davinci_wdt = "davinci_wdt"
 module_autoload_dspdl_dm644x = "dspdl_dm644x"
 module_autoload_fpgadl_par = "fpgadl_par"
 module_autoload_leds-gpio = "leds-gpio"

recipes-bsp/linux/linux-sysmocom_git.bb

@@ -15,7 +15,7 @@ BTS_FIRMWARE_NAME_sysmobts-v2 = "sysmobts-v2"
 
 SRCREV = "9610e792ffde7fb2599d19ca6d2a03230f2043c6"
 
-PR = "r37"
+PR = "r38"
 PV = "${LINUX_VERSION}+git${SRCPV}"
 
 SRC_URI = "git://git.sysmocom.de/sysmo-bts/linux.git;protocol=git;branch=linux-3.10.50 \
@@ -41,7 +41,6 @@ do_configure() {
 
 # autoload defaults (alphabetically sorted)
 module_autoload_davinci_mmc = "davinci_mmc"
-module_autoload_davinci_wdt = "davinci_wdt"
 module_autoload_dspdl_dm644x = "dspdl_dm644x"
 module_autoload_fpgadl_par = "fpgadl_par"
 module_autoload_leds-gpio = "leds-gpio"
@@ -49,7 +48,7 @@ module_autoload_mmc_block = "mmc_block"
 module_autoload_msgqueue = "msgqueue"
 module_autoload_rtfifo = "rtfifo"
 
-KERNEL_MODULE_PROBECONF_append = "davinci_mmc davinci_wdt dspdl_dm644x fpgadl_par leds-gpio mmc_block msgqueue rtfifo"
+KERNEL_MODULE_PROBECONF_append = "davinci_mmc dspdl_dm644x fpgadl_par leds-gpio mmc_block msgqueue rtfifo"
 
 # module configs (alphabetically sorted)
 module_conf_dspdl_dm644x = "options dspdl_dm644x fw_name=${BTS_FIRMWARE_NAME}.out debug=0"