diff options
| author | Pali Rohár <pali@kernel.org> | 2022-08-01 15:35:43 +0200 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2022-09-07 11:46:45 +0800 |
| commit | 645993bdd758067941c1e121ec218027ad0ece68 (patch) | |
| tree | 04b45751f9305f94819d06d77335f16fd19032a8 | |
| parent | 61fed3155f85059a25e71c44b9da5f6753fc84a4 (diff) | |
board: freescale: p1_p2_rdb_pc: Delete watchdog max6370 node in load_default mode
CPLD in load_default mode ignores watchdog reset signal. It does not reset
board when watchdog triggers reset signal.
Detect load_default mode by GPIO7 - LOAD_DEFAULT_N and delete watchdog
max6370 node from device to prevent registering driver for non-working
watchdog.
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
| -rw-r--r-- | board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c index 25906d3fc01..b301491ef81 100644 --- a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c +++ b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c @@ -414,6 +414,24 @@ int board_eth_init(struct bd_info *bis) } #endif +#if defined(CONFIG_OF_BOARD_SETUP) || defined(CONFIG_OF_BOARD_FIXUP) +static void fix_max6370_watchdog(void *blob) +{ + int off = fdt_node_offset_by_compatible(blob, -1, "maxim,max6370"); + ccsr_gpio_t *pgpio = (void *)(CONFIG_SYS_MPC85xx_GPIO_ADDR); + u32 gpioval = in_be32(&pgpio->gpdat); + + /* + * Delete watchdog max6370 node in load_default mode (detected by + * GPIO7 - LOAD_DEFAULT_N) because CPLD in load_default mode ignores + * watchdog reset signal. CPLD in load_default mode does not reset + * board when watchdog triggers reset signal. + */ + if (!(gpioval & BIT(31-7)) && off >= 0) + fdt_del_node(blob, off); +} +#endif + #ifdef CONFIG_OF_BOARD_SETUP int ft_board_setup(void *blob, struct bd_info *bd) { @@ -439,6 +457,8 @@ int ft_board_setup(void *blob, struct bd_info *bd) sizeof("okay"), 0); #endif + fix_max6370_watchdog(blob); + #if defined(CONFIG_HAS_FSL_DR_USB) fsl_fdt_fixup_dr_usb(blob, bd); #endif @@ -490,3 +510,11 @@ int ft_board_setup(void *blob, struct bd_info *bd) return 0; } #endif + +#ifdef CONFIG_OF_BOARD_FIXUP +int board_fix_fdt(void *blob) +{ + fix_max6370_watchdog(blob); + return 0; +} +#endif |