From e0cd44c3c1209c281d67b18372e584b143885303 Mon Sep 17 00:00:00 2001 From: Reinhard Meyer Date: Mon, 9 Aug 2010 13:25:37 +0200 Subject: [PATCH] AT91: reset.c: fix comments, add option Signed-off-by: Reinhard Meyer --- arch/arm/cpu/arm926ejs/at91/reset.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/arch/arm/cpu/arm926ejs/at91/reset.c b/arch/arm/cpu/arm926ejs/at91/reset.c index 1b67e77887..d2569d8bae 100644 --- a/arch/arm/cpu/arm926ejs/at91/reset.c +++ b/arch/arm/cpu/arm926ejs/at91/reset.c @@ -27,18 +27,19 @@ #include #include -/* - * Reset the cpu by setting up the watchdog timer and let him time out. - */ +/* Reset the cpu by telling the reset controller to do so */ void reset_cpu(ulong ignored) { at91_rstc_t *rstc = (at91_rstc_t *) AT91_RSTC_BASE; - /* this is the way Linux does it */ - - writel(AT91_RSTC_KEY | AT91_RSTC_CR_PROCRST | AT91_RSTC_CR_PERRST, - &rstc->cr); - - while (1); - /* Never reached */ + writel(AT91_RSTC_KEY + | AT91_RSTC_CR_PROCRST /* Processor Reset */ + | AT91_RSTC_CR_PERRST /* Peripheral Reset */ +#ifdef CONFIG_AT91RESET_EXTRST + | AT91_RSTC_CR_EXTRST /* External Reset (assert nRST pin) */ +#endif + , &rstc->cr); + /* never reached */ + while (1) + ; } -- 2.39.2