Commit ad0c63f1 authored by stanley.miao's avatar stanley.miao Committed by Tony Lindgren
Browse files

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: default avatarStanley.Miao <stanley.miao@windriver.com>
Acked-by: default avatarKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 72a1179e

arch/arm/mach-omap2/id.c

+2 −0
Original line number Diff line number Diff line
@@ -179,6 +179,8 @@ static void __init omap3_check_features(void) 
	OMAP3_CHECK_FEATURE(status, ISP);

	if (cpu_is_omap3630())

		omap3_features |= OMAP3_HAS_192MHZ_CLK;

	if (!cpu_is_omap3505() && !cpu_is_omap3517())

		omap3_features |= OMAP3_HAS_IO_WAKEUP;



	/*

	 * TODO: Get additional info (where applicable)

arch/arm/mach-omap2/pm34xx.c

+4 −3
Original line number Diff line number Diff line
@@ -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();

	}

arch/arm/plat-omap/include/plat/cpu.h

+2 −0
Original line number Diff line number Diff line
@@ -444,6 +444,7 @@ extern u32 omap3_features; 
#define OMAP3_HAS_NEON			BIT(3)

#define OMAP3_HAS_ISP			BIT(4)

#define OMAP3_HAS_192MHZ_CLK		BIT(5)

#define OMAP3_HAS_IO_WAKEUP		BIT(6)



#define OMAP3_HAS_FEATURE(feat,flag)			\

static inline unsigned int omap3_has_ ##feat(void)	\
@@ -457,5 +458,6 @@ OMAP3_HAS_FEATURE(iva, IVA) 
OMAP3_HAS_FEATURE(neon, NEON)

OMAP3_HAS_FEATURE(isp, ISP)

OMAP3_HAS_FEATURE(192mhz_clk, 192MHZ_CLK)

OMAP3_HAS_FEATURE(io_wakeup, IO_WAKEUP)



#endif

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