From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vishwanath BS Subject: [PATCH 06/13] OMAP: Disable Smartreflex across DVFS Date: Fri, 21 Jan 2011 19:30:58 +0530 Message-ID: <1295618465-15234-7-git-send-email-vishwanath.bs@ti.com> References: <1295618465-15234-1-git-send-email-vishwanath.bs@ti.com> Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:33512 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751487Ab1AUN5p (ORCPT ); Fri, 21 Jan 2011 08:57:45 -0500 In-Reply-To: <1295618465-15234-1-git-send-email-vishwanath.bs@ti.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org Cc: patches@linaro.org, Thara Gopinath , Vishwanath BS From: Thara Gopinath 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 Signed-off-by: Vishwanath BS --- arch/arm/mach-omap2/dvfs.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/dvfs.c b/arch/arm/mach-omap2/dvfs.c index 05a9ce3..1e5492c 100755 --- a/arch/arm/mach-omap2/dvfs.c +++ b/arch/arm/mach-omap2/dvfs.c @@ -529,6 +529,9 @@ static int omap_dvfs_voltage_scale(struct omap_vdd_dvfs_info *dvfs_info) curr_volt = omap_voltage_get_nom_volt(voltdm); + /* 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) { @@ -536,6 +539,7 @@ static int omap_dvfs_voltage_scale(struct omap_vdd_dvfs_info *dvfs_info) if (ret) { pr_warning("%s: Unable to scale the %s to %ld volt\n", __func__, voltdm->name, volt); + omap_sr_enable(voltdm); mutex_unlock(&dvfs_info->scaling_mutex); return ret; } @@ -570,6 +574,9 @@ static int omap_dvfs_voltage_scale(struct omap_vdd_dvfs_info *dvfs_info) if (!is_volt_scaled && !ret) omap_voltage_scale_vdd(voltdm, volt); + /* Enable Smartreflex module */ + omap_sr_enable(voltdm); + mutex_unlock(&dvfs_info->scaling_mutex); /* calculate the voltages for dependent vdd's */ -- 1.7.0.4