OMAP3: AM3505/3517 do not have IO wakeup capability

AM3505/3517 doesn't have IO wakeup capability, so we do not need to set
the bit OMAP3430_EN_IO and the bit OMAP3430_EN_IO_CHAIN in the register
PM_WKEN_WKUP when the system enters suspend state.

Tested on AM3517EVM and OMAP3530EVM.

Signed-off-by: Stanley.Miao <stanley.miao@windriver.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 4 insertions, 3 deletions

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index b88737fd6cfe..fb4994ad622e 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -385,8 +385,9 @@ void omap_sram_idle(void)
         /* Enable IO-PAD and IO-CHAIN wakeups */
         per_next_state = pwrdm_read_next_pwrst(per_pwrdm);
         core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
-        if (per_next_state < PWRDM_POWER_ON ||
-                        core_next_state < PWRDM_POWER_ON) {
+        if (omap3_has_io_wakeup() && \
+                        (per_next_state < PWRDM_POWER_ON ||
+                        core_next_state < PWRDM_POWER_ON)) {
                 prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
                 omap3_enable_io_chain();
         }
@@ -479,7 +480,7 @@ void omap_sram_idle(void)
         }
 
         /* Disable IO-PAD and IO-CHAIN wakeup */
-        if (core_next_state < PWRDM_POWER_ON) {
+        if (omap3_has_io_wakeup() && core_next_state < PWRDM_POWER_ON) {
                 prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
                 omap3_disable_io_chain();
         }