PING? (This change applies also for Turris 1.x boards; which use same CPLD firmware code)
On Monday 01 August 2022 15:35:43 Pali Rohár wrote: > 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 <p...@kernel.org> > --- > board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c | 28 +++++++++++++++++++++ > 1 file changed, 28 insertions(+) > > 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 a71952dcf399..06cab729e4ab 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 > @@ -368,6 +368,24 @@ 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) > { > @@ -393,6 +411,8 @@ 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 > @@ -444,3 +464,11 @@ 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 > -- > 2.20.1 >