arm-trusted-firmware-mediatek: fix hang on reboot on MT7622

With recent updates of TF-A the previously already fixed bug slipped
back into the source tree. Again, reorder bl2 init for MT7622 and
initialize WDT only after DRAM init has completed to avoid the
notorious hang.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

diff --git a/package/boot/arm-trusted-firmware-mediatek/Makefile b/package/boot/arm-trusted-firmware-mediatek/Makefile
index 853049cfb0e1ee7b0368e988e7d2aeb44b53639f..718ebf99e0949811dc06e803bb9ce71518333e1d 100644 (file)
--- a/package/boot/arm-trusted-firmware-mediatek/Makefile
+++ b/package/boot/arm-trusted-firmware-mediatek/Makefile
@@ -9,7 +9,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=arm-trusted-firmware-mediatek
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL=https://github.com/mtk-openwrt/arm-trusted-firmware.git

diff --git a/package/boot/arm-trusted-firmware-mediatek/patches/002-mt7622-move-wdt-init-after-dram-init.patch b/package/boot/arm-trusted-firmware-mediatek/patches/002-mt7622-move-wdt-init-after-dram-init.patch
new file mode 100644 (file)
index 0000000..4a4d252
--- /dev/null
+++ b/package/boot/arm-trusted-firmware-mediatek/patches/002-mt7622-move-wdt-init-after-dram-init.patch
@@ -0,0 +1,28 @@
+From 9e8cb08bc64530e7511b86a131cfad1ae0199586 Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Sun, 10 Sep 2023 23:35:47 +0100
+Subject: [PATCH] mt7622: move wdt init after dram init
+
+resolves hang on reboot
+---
+ plat/mediatek/mt7622/bl2/bl2_plat_init.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/plat/mediatek/mt7622/bl2/bl2_plat_init.c
++++ b/plat/mediatek/mt7622/bl2/bl2_plat_init.c
+@@ -40,7 +40,6 @@ bool plat_is_my_cpu_primary(void)
+ const struct initcall bl2_initcalls[] = {
+       INITCALL(plat_mt_cpuxgpt_init),
+       INITCALL(generic_delay_timer_init),
+-      INITCALL(mtk_wdt_init),
+       INITCALL(mtk_print_cpu),
+       INITCALL(mtk_pin_init),
+ #ifndef IMAGE_BL2PL
+@@ -49,6 +48,7 @@ const struct initcall bl2_initcalls[] =
+       INITCALL(mtk_pwrap_init),
+       INITCALL(mtk_pmic_init),
+       INITCALL(mtk_mem_init),
++      INITCALL(mtk_wdt_init),
+ 
+       INITCALL(NULL)
+ };