1 files changed, 12 insertions, 5 deletions

diff --git a/arch/arm/plat-omap/include/plat/cpu.h b/arch/arm/plat-omap/include/plat/cpu.h
index 67b3d75884cd..3a280aaf9675 100644
--- a/arch/arm/plat-omap/include/plat/cpu.h
+++ b/arch/arm/plat-omap/include/plat/cpu.h
@@ -477,6 +477,13 @@ void omap2_check_revision(void);
 
 /*
  * Runtime detection of OMAP3 features
+ *
+ * OMAP3_HAS_IO_CHAIN_CTRL: Some later members of the OMAP3 chip
+ *    family have OS-level control over the I/O chain clock.  This is
+ *    to avoid a window during which wakeups could potentially be lost
+ *    during powerdomain transitions.  If this bit is set, it
+ *    indicates that the chip does support OS-level control of this
+ *    feature.
  */
 extern u32 omap_features;
 
@@ -488,9 +495,10 @@ extern u32 omap_features;
 #define OMAP3_HAS_192MHZ_CLK            BIT(5)
 #define OMAP3_HAS_IO_WAKEUP             BIT(6)
 #define OMAP3_HAS_SDRC                  BIT(7)
-#define OMAP4_HAS_MPU_1GHZ              BIT(8)
-#define OMAP4_HAS_MPU_1_2GHZ            BIT(9)
-#define OMAP4_HAS_MPU_1_5GHZ            BIT(10)
+#define OMAP3_HAS_IO_CHAIN_CTRL         BIT(8)
+#define OMAP4_HAS_MPU_1GHZ              BIT(9)
+#define OMAP4_HAS_MPU_1_2GHZ            BIT(10)
+#define OMAP4_HAS_MPU_1_5GHZ            BIT(11)
 
 
 #define OMAP3_HAS_FEATURE(feat,flag)                    \
@@ -507,12 +515,11 @@ OMAP3_HAS_FEATURE(isp, ISP)
 OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)
 OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)
 OMAP3_HAS_FEATURE(sdrc, SDRC)
+OMAP3_HAS_FEATURE(io_chain_ctrl, IO_CHAIN_CTRL)
 
 /*
  * Runtime detection of OMAP4 features
  */
-extern u32 omap_features;
-
 #define OMAP4_HAS_FEATURE(feat, flag)                   \
 static inline unsigned int omap4_has_ ##feat(void)      \
 {                                                       \