From ee54dba9c360944b34e06478c05c6f283bf64eda Mon Sep 17 00:00:00 2001 From: Russell King - ARM Linux Date: Thu, 27 Jan 2011 16:39:45 -0800 Subject: ARM: OMAP: Allow platforms to hook reset cleanly This adds a clean method to allow platforms to hook into the reset code if they require to. Signed-off-by: Russell King Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/reset.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 arch/arm/mach-omap1/reset.c (limited to 'arch/arm/mach-omap1/reset.c') diff --git a/arch/arm/mach-omap1/reset.c b/arch/arm/mach-omap1/reset.c new file mode 100644 index 000000000000..ad951ee69205 --- /dev/null +++ b/arch/arm/mach-omap1/reset.c @@ -0,0 +1,25 @@ +/* + * OMAP1 reset support + */ +#include +#include + +#include +#include +#include + +void omap1_arch_reset(char mode, const char *cmd) +{ + /* + * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28 + * "Global Software Reset Affects Traffic Controller Frequency". + */ + if (cpu_is_omap5912()) { + omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL); + omap_writew(0x8, ARM_RSTCT1); + } + + omap_writew(1, ARM_RSTCT1); +} + +void (*arch_reset)(char, const char *) = omap1_arch_reset; -- cgit v1.2.3