From 1376ee1d191b32d0be6d2956f1a6f3dd63251e2e Mon Sep 17 00:00:00 2001 From: Thara Gopinath Date: Sat, 29 May 2010 22:02:25 +0530 Subject: [PATCH] OMAP4: PM: Program correct init voltages for scalable VDDs By default the system boots up at nominal voltage for every voltage domain in the system. This patch puts vdd_mpu, vdd_iva and vdd_core to the correct boot up voltage as per the opp tables specified. This patch implements this by matching the rate of the main clock of the voltage domain with the opp table and picking up the correct voltage. Signed-off-by: Thara Gopinath Signed-off-by: Kevin Hilman --- arch/arm/mach-omap2/pm.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c index aac9bacf1bd..d5a102c7198 100644 --- a/arch/arm/mach-omap2/pm.c +++ b/arch/arm/mach-omap2/pm.c @@ -227,6 +227,16 @@ static void __init omap3_init_voltages(void) omap2_set_init_voltage("core", "l3_ick", l3_dev); } +static void __init omap4_init_voltages(void) +{ + if (!cpu_is_omap44xx()) + return; + + omap2_set_init_voltage("mpu", "dpll_mpu_ck", mpu_dev); + omap2_set_init_voltage("core", "l3_div_ck", l3_dev); + omap2_set_init_voltage("iva", "dpll_iva_m5x2_ck", iva_dev); +} + static int __init omap2_common_pm_init(void) { omap2_init_processor_devices(); @@ -247,6 +257,7 @@ static int __init omap2_common_pm_late_init(void) /* Initialize the voltages */ omap3_init_voltages(); + omap4_init_voltages(); /* Smartreflex device init */ omap_devinit_smartreflex();