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| author | Roland Stigge <stigge@antcom.de> | 2014-09-09 15:13:14 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2014-09-10 17:25:14 +0200 |
| commit | 01100c022df5d9b8ac56d3705e33e69dc012a6e2 (patch) | |
| tree | 28b91fead017b35b735b995c7ada4146e1ce7859 /arch/arm/mach-lpc32xx | |
| parent | 8013e8c7117d9d54e84d80480b105f80603d9945 (diff) | |
| download | lwn-01100c022df5d9b8ac56d3705e33e69dc012a6e2.tar.gz lwn-01100c022df5d9b8ac56d3705e33e69dc012a6e2.zip | |
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 <stigge@antcom.de>
Diffstat (limited to 'arch/arm/mach-lpc32xx')
| -rw-r--r-- | arch/arm/mach-lpc32xx/common.c | 29 |
1 files 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 @@ -57,20 +57,6 @@ int clk_is_sysclk_mainosc(void) } /* - * 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 */ #define LPC32XX_IRAM_BANK_SIZE SZ_128K @@ -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) |