From 6cf38956c9838414b2678c7e661001313d200d8c Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Sat, 16 Feb 2013 17:55:08 +0530 Subject: ARM: OMAP4: PM: Remove L4 wakeup depedency with MPU since errata fix exist now With commit bfd6d021 {ARM: OMAP3+: Implement timer workaround for errata i103 and i767}, the sync and gptimer synchronization errata got fixed. Hence the l4_wakeup static dependency with MPU can can be removed now. Static dependency was one of the proposed workaround but from power savings perspective, it isn't an ideal workaround. Acked-by: Kevin Hilman Signed-off-by: Santosh Shilimkar --- arch/arm/mach-omap2/pm44xx.c | 10 ++-------- 1 file changed, 2 insertions(+), 8 deletions(-) (limited to 'arch/arm/mach-omap2/pm44xx.c') diff --git a/arch/arm/mach-omap2/pm44xx.c b/arch/arm/mach-omap2/pm44xx.c index 9e9095c65129..3b5a5a832824 100644 --- a/arch/arm/mach-omap2/pm44xx.c +++ b/arch/arm/mach-omap2/pm44xx.c @@ -143,7 +143,7 @@ static void omap_default_idle(void) int __init omap4_pm_init(void) { int ret; - struct clockdomain *emif_clkdm, *mpuss_clkdm, *l3_1_clkdm, *l4wkup; + struct clockdomain *emif_clkdm, *mpuss_clkdm, *l3_1_clkdm; struct clockdomain *ducati_clkdm, *l3_2_clkdm, *l4_per_clkdm; if (omap_rev() == OMAP4430_REV_ES1_0) { @@ -171,19 +171,14 @@ int __init omap4_pm_init(void) * MPUSS -> L4_PER/L3_* and DUCATI -> L3_* doesn't work as * expected. The hardware recommendation is to enable static * dependencies for these to avoid system lock ups or random crashes. - * The L4 wakeup depedency is added to workaround the OCP sync hardware - * BUG with 32K synctimer which lead to incorrect timer value read - * from the 32K counter. The BUG applies for GPTIMER1 and WDT2 which - * are part of L4 wakeup clockdomain. */ mpuss_clkdm = clkdm_lookup("mpuss_clkdm"); emif_clkdm = clkdm_lookup("l3_emif_clkdm"); l3_1_clkdm = clkdm_lookup("l3_1_clkdm"); l3_2_clkdm = clkdm_lookup("l3_2_clkdm"); l4_per_clkdm = clkdm_lookup("l4_per_clkdm"); - l4wkup = clkdm_lookup("l4_wkup_clkdm"); ducati_clkdm = clkdm_lookup("ducati_clkdm"); - if ((!mpuss_clkdm) || (!emif_clkdm) || (!l3_1_clkdm) || (!l4wkup) || + if ((!mpuss_clkdm) || (!emif_clkdm) || (!l3_1_clkdm) || (!l3_2_clkdm) || (!ducati_clkdm) || (!l4_per_clkdm)) goto err2; @@ -191,7 +186,6 @@ int __init omap4_pm_init(void) ret |= clkdm_add_wkdep(mpuss_clkdm, l3_1_clkdm); ret |= clkdm_add_wkdep(mpuss_clkdm, l3_2_clkdm); ret |= clkdm_add_wkdep(mpuss_clkdm, l4_per_clkdm); - ret |= clkdm_add_wkdep(mpuss_clkdm, l4wkup); ret |= clkdm_add_wkdep(ducati_clkdm, l3_1_clkdm); ret |= clkdm_add_wkdep(ducati_clkdm, l3_2_clkdm); if (ret) { -- cgit v1.2.3