package/boot/arm-trusted-firmware-mediatek/patches/0002-mediatek-mt7622-initialize-watchdog-after-DDR-init.patch

   1 From 2a012775b3ab6e72091c8be1c2d4bf5972407eb5 Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Sat, 27 Aug 2022 21:38:33 +0100
   4 Subject: [PATCH] mediatek: mt7622: initialize watchdog after DDR init
   5
   6 Initializing the WDT before memory calibration breaks reboot at least
   7 on some MT7622 boards like the Bananapi BPi-R64:
   8 NOTICE:  BL2: v2.7(release):OpenWrt v2022-08-18-9c9c4994-2 (mt7622-emmc-2ddr)
   9 NOTICE:  BL2: Built : 04:00:25, Aug 27 2022
  10 ERROR:   Cannot find any pass-window
  11 ERROR:   no DATLAT taps pass, DATLAT calibration fail!
  12 ERROR:   DATLAT calibration fail, write back to  20!
  13 ERROR:   EMI: complex R/W mem test failed: -2
  14
  15 Move watchdog initialization to happen only after memory initialization
  16 has completed to avoid the problem.
  17
  18 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  19 ---
  20  plat/mediatek/mt7622/bl2_plat_setup.c | 2 +-
  21  1 file changed, 1 insertion(+), 1 deletion(-)
  22
  23 --- a/plat/mediatek/mt7622/bl2_plat_setup.c
  24 +++ b/plat/mediatek/mt7622/bl2_plat_setup.c
  25 @@ -277,7 +277,6 @@ void bl2_platform_setup(void)
  26         plat_mt_cpuxgpt_init();
  27         generic_delay_timer_init();
  28
  29 -       mtk_wdt_init();
  30         mtk_pin_init();
  31  #ifndef USING_BL2PL
  32         mtk_pll_init();
  33 @@ -285,6 +284,7 @@ void bl2_platform_setup(void)
  34         mtk_pwrap_init();
  35         mtk_pmic_init();
  36         mtk_mem_init();
  37 +       mtk_wdt_init();
  38
  39         mtk_io_setup();
  40  }