ARM: OMAP: GPIO: IRQSTATUS2 workaround for retention state

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In OMAP2420, an incoming GPIO interrupt always sets both GPIO_IRQSTATUS1
and GPIO_IRQSTATUS2, even if the relevant bit is disabled in
GPIO_IRQENABLE1/2 and DSP doesn't use GPIO at all. GPIO_IRQSTATUS1
is for MPU and GPIO_IRQSTATUS2 is for DSP. If IRQSTATUS is set, this
will prevent the system from going to idle state. This patch also clears
IRQSTATUS2 to avoid the above situation.

Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

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Hiroshi DOYU 2006-09-25 12:41:46 +03:00 • committed by Tony Lindgren

parent 0d9356cbb5

commit bee7930f4a

1 changed files with 6 additions and 0 deletions

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arch/arm/plat-omap/gpio.c

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