On 8/18/2022 5:05 AM, Pali Rohár wrote:
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 pali@kernel.org
Applied, sorry for late.
If possible, please help assign your patch in patchwork to me[freenix], that would help a lot.
Thanks, Peng.
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