[ARM] Orion: add a separate BRIDGE_INT_TIMER1_CLR define

Some Feroceon-based SoCs have an MBUS bridge interrupt controller
that requires writing a one instead of a zero to clear edge
interrupt sources such as timer expiry.

This patch adds a new BRIDGE_INT_TIMER1_CLR define, which platform
code can set to either ~BRIDGE_INT_TIMER1 (write-zero-to-clear) or
BRIDGE_INT_TIMER1 (write-one-to-clear) depending on the platform.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-arm/arch-orion5x/orion5x.h b/include/asm-arm/arch-orion5x/orion5x.h
index 20f7b406a798..10257f5c5e9e 100644
--- a/include/asm-arm/arch-orion5x/orion5x.h
+++ b/include/asm-arm/arch-orion5x/orion5x.h
@@ -154,6 +154,7 @@
 #define BRIDGE_MASK             ORION5X_BRIDGE_REG(0x114)
 #define  BRIDGE_INT_TIMER0      0x0002
 #define  BRIDGE_INT_TIMER1      0x0004
+#define  BRIDGE_INT_TIMER1_CLR  (~0x0004)
 #define MAIN_IRQ_CAUSE          ORION5X_BRIDGE_REG(0x200)
 #define MAIN_IRQ_MASK           ORION5X_BRIDGE_REG(0x204)