From 4c68660aa69a5eaeaff7fda7e2297e2d31de0333 Mon Sep 17 00:00:00 2001 From: Thara Gopinath Date: Fri, 2 Jul 2010 13:06:57 +0530 Subject: [PATCH 13/20] OMAP: Disable smartreflex across DVFS This patch disables smartreflex for a particular voltage domain when the the voltage domain and the devices belonging to it is being scaled and re-enables it back once the scaling is done. Signed-off-by: Thara Gopinath --- arch/arm/mach-omap2/voltage.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-omap2/voltage.c index c83d968..2f331de 100644 --- a/arch/arm/mach-omap2/voltage.c +++ b/arch/arm/mach-omap2/voltage.c @@ -32,6 +32,7 @@ #include #include #include +#include #include "prm-regbits-34xx.h" #include "prm-regbits-44xx.h" @@ -1806,6 +1807,9 @@ int omap_voltage_scale(struct voltagedomain *voltdm, unsigned long volt) return -EINVAL; } + /* Disable smartreflex module across voltage and frequency scaling */ + omap_sr_disable(voltdm); + if (curr_volt == volt) { is_volt_scaled = 1; } else if (curr_volt < volt) { @@ -1840,6 +1844,9 @@ int omap_voltage_scale(struct voltagedomain *voltdm, unsigned long volt) mutex_unlock(&vdd->scaling_mutex); + /* Enable Smartreflex module */ + omap_sr_enable(voltdm); + /* Scale dependent vdds */ scale_dep_vdd(vdd); -- 1.6.6.1