diff options
Diffstat (limited to 'drivers/power/reset/at91-reset.c')
| -rw-r--r-- | drivers/power/reset/at91-reset.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c index 537ccb180568..3ff9d93a5226 100644 --- a/drivers/power/reset/at91-reset.c +++ b/drivers/power/reset/at91-reset.c @@ -35,6 +35,7 @@ #define AT91_RSTC_MR 0x08 /* Reset Controller Mode Register */ #define AT91_RSTC_URSTEN BIT(0) /* User Reset Enable */ +#define AT91_RSTC_URSTASYNC BIT(2) /* User Reset Asynchronous Control */ #define AT91_RSTC_URSTIEN BIT(4) /* User Reset Interrupt Enable */ #define AT91_RSTC_ERSTL GENMASK(11, 8) /* External Reset Length */ @@ -228,6 +229,13 @@ static int __init at91_reset_probe(struct platform_device *pdev) platform_set_drvdata(pdev, reset); + if (of_device_is_compatible(pdev->dev.of_node, "microchip,sam9x60-rstc")) { + u32 val = readl(reset->rstc_base + AT91_RSTC_MR); + + writel(AT91_RSTC_KEY | AT91_RSTC_URSTASYNC | val, + reset->rstc_base + AT91_RSTC_MR); + } + ret = register_restart_handler(&reset->nb); if (ret) { clk_disable_unprepare(reset->sclk); |