From 01100c022df5d9b8ac56d3705e33e69dc012a6e2 Mon Sep 17 00:00:00 2001 From: Roland Stigge Date: Tue, 9 Sep 2014 15:13:14 +0200 Subject: [PATCH] ARM: LPC32xx: Fix reset function In the recent change to the reset function API (commit 7b6d864b48d95e6ea1df7df64475b9cb9616dcf9), the mode argument changed from a char to an enum. lpc23xx_restart() only handles REBOOT_SOFT and REBOOT_HARD, but the new kernel code emits REBOOT_COLD (0) on reboots now which leads to lpc32xx simply not rebooting (but halting). This patch fixes this by just resetting unconditionally as on other platforms (e.g. mach-bcm2835). Pulling lpc32xx_watchdog_reset() into lpc23xx_restart() since the while() in lpc23xx_restart() is part of the procedure anyway and lpc32xx_watchdog_reset() isn't used anywhere else anymore. Signed-off-by: Roland Stigge --- arch/arm/mach-lpc32xx/common.c | 29 ++++++----------------------- 1 file changed, 6 insertions(+), 23 deletions(-) diff --git a/arch/arm/mach-lpc32xx/common.c b/arch/arm/mach-lpc32xx/common.c index de03620d7fa7..716e83eb1db8 100644 --- a/arch/arm/mach-lpc32xx/common.c +++ b/arch/arm/mach-lpc32xx/common.c @@ -56,20 +56,6 @@ int clk_is_sysclk_mainosc(void) return 0; } -/* - * System reset via the watchdog timer - */ -static void lpc32xx_watchdog_reset(void) -{ - /* Make sure WDT clocks are enabled */ - __raw_writel(LPC32XX_CLKPWR_PWMCLK_WDOG_EN, - LPC32XX_CLKPWR_TIMER_CLK_CTRL); - - /* Instant assert of RESETOUT_N with pulse length 1mS */ - __raw_writel(13000, io_p2v(LPC32XX_WDTIM_BASE + 0x18)); - __raw_writel(0x70, io_p2v(LPC32XX_WDTIM_BASE + 0xC)); -} - /* * Detects and returns IRAM size for the device variation */ @@ -210,16 +196,13 @@ void __init lpc32xx_map_io(void) void lpc23xx_restart(enum reboot_mode mode, const char *cmd) { - switch (mode) { - case REBOOT_SOFT: - case REBOOT_HARD: - lpc32xx_watchdog_reset(); - break; + /* Make sure WDT clocks are enabled */ + __raw_writel(LPC32XX_CLKPWR_PWMCLK_WDOG_EN, + LPC32XX_CLKPWR_TIMER_CLK_CTRL); - default: - /* Do nothing */ - break; - } + /* Instant assert of RESETOUT_N with pulse length 1mS */ + __raw_writel(13000, io_p2v(LPC32XX_WDTIM_BASE + 0x18)); + __raw_writel(0x70, io_p2v(LPC32XX_WDTIM_BASE + 0xC)); /* Wait for watchdog to reset system */ while (1) -- GitLab