Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757721AbZDWNKk (ORCPT ); Thu, 23 Apr 2009 09:10:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756256AbZDWNK3 (ORCPT ); Thu, 23 Apr 2009 09:10:29 -0400 Received: from smtp.nokia.com ([192.100.122.230]:43517 "EHLO mgw-mx03.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753023AbZDWNK2 (ORCPT ); Thu, 23 Apr 2009 09:10:28 -0400 From: "Peter 'p2' De Schrijver" To: linux-kernel@vger.kernel.org, dbrownell@users.sourceforge.net Cc: "Peter 'p2' De Schrijver" Subject: [PATCH 1/1] TWL4030: Activate VDD1, VDD2 and VPLL1 at startup Date: Thu, 23 Apr 2009 16:10:08 +0300 Message-Id: <1240492208-14791-2-git-send-email-peter.de-schrijver@nokia.com> X-Mailer: git-send-email 1.5.6.3 In-Reply-To: <1240492208-14791-1-git-send-email-peter.de-schrijver@nokia.com> References: <1240492208-14791-1-git-send-email-peter.de-schrijver@nokia.com> X-OriginalArrivalTime: 23 Apr 2009 13:10:11.0947 (UTC) FILETIME=[D5A43BB0:01C9C414] X-Nokia-AV: Clean Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1697 Lines: 44 This patch activates VDD1, VDD2 and VPLL1 when booting. This is necessary because these resources are in warm reset state after a reboot. This means their voltage levels cannot be modified so DVFS and smartreflex don't work. Signed-off-by: Peter 'p2' De Schrijver --- drivers/regulator/twl4030-regulator.c | 18 +++++++++++++++++- 1 files changed, 17 insertions(+), 1 deletions(-) diff --git a/drivers/regulator/twl4030-regulator.c b/drivers/regulator/twl4030-regulator.c index 80a4e10..ab2a726 100644 --- a/drivers/regulator/twl4030-regulator.c +++ b/drivers/regulator/twl4030-regulator.c @@ -506,6 +506,22 @@ static int twl4030reg_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, rdev); + /* VDD1, VDD2 and VPLL1 are left in warm reset state after a reboot. + * We need to put them back to active state for DVFS and smartreflex. + */ + + if (twl4030_send_pb_msg(MSG_SINGULAR(DEV_GRP_P1, RES_VDD1, + RES_STATE_ACTIVE)) < 0) + pr_err("Unable to activate VDD1\n"); + + if (twl4030_send_pb_msg(MSG_SINGULAR(DEV_GRP_P1, RES_VDD2, + RES_STATE_ACTIVE)) < 0) + pr_err("Unable to activate VDD2\n"); + + if (twl4030_send_pb_msg(MSG_SINGULAR(DEV_GRP_P1, RES_VPLL1, + RES_STATE_ACTIVE)) < 0) + pr_err("Unable to activate VPLL1\n"); + /* NOTE: many regulators support short-circuit IRQs (presentable * as REGULATOR_OVER_CURRENT notifications?) configured via: * - SC_CONFIG -- 1.5.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/