From patchwork Fri Jun 24 08:28:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 9196953 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0AEC960754 for ; Fri, 24 Jun 2016 08:29:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id EC99F28497 for ; Fri, 24 Jun 2016 08:29:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DF7142849C; Fri, 24 Jun 2016 08:29:55 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8FB4028497 for ; Fri, 24 Jun 2016 08:29:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751038AbcFXI2u (ORCPT ); Fri, 24 Jun 2016 04:28:50 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:40904 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751450AbcFXI2r (ORCPT ); Fri, 24 Jun 2016 04:28:47 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id u5O8Rmsc003158; Fri, 24 Jun 2016 03:27:48 -0500 Received: from DLEE70.ent.ti.com (dlemailx.itg.ti.com [157.170.170.113]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id u5O8SdVp029322; Fri, 24 Jun 2016 03:28:39 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.294.0; Fri, 24 Jun 2016 03:28:38 -0500 Received: from ula0393675.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id u5O8SMhH018308; Fri, 24 Jun 2016 03:28:36 -0500 From: Keerthy To: , , CC: , , , , , Dave Gerlach Subject: [PATCH v2 5/5] regulator: tps65218: do not disable DCDC3 during poweroff on broken PMICs Date: Fri, 24 Jun 2016 13:58:11 +0530 Message-ID: <1466756892-17015-5-git-send-email-j-keerthy@ti.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1466756892-17015-1-git-send-email-j-keerthy@ti.com> References: <1466756892-17015-1-git-send-email-j-keerthy@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Tero Kristo Some versions of tps65218 do not seem to support poweroff modes properly if DCDC3 regulator is shut-down. Thus, keep it enabled even during poweroff if the version info matches the broken silicon revision. Signed-off-by: Tero Kristo Signed-off-by: Dave Gerlach Signed-off-by: Keerthy --- drivers/regulator/tps65218-regulator.c | 8 ++++++++ include/linux/mfd/tps65218.h | 5 +++++ 2 files changed, 13 insertions(+) diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c index d1e631d..eb0f5b1 100644 --- a/drivers/regulator/tps65218-regulator.c +++ b/drivers/regulator/tps65218-regulator.c @@ -180,6 +180,14 @@ static int tps65218_pmic_set_suspend_disable(struct regulator_dev *dev) if (rid < TPS65218_DCDC_1 || rid > TPS65218_LDO_1) return -EINVAL; + /* + * Certain revisions of TPS65218 will need to have DCDC3 regulator + * enabled always, otherwise an immediate system reboot will occur + * during poweroff. + */ + if (rid == TPS65218_DCDC_3 && tps->rev == TPS65218_REV_2_1) + return 0; + if (!tps->info[rid]->strobe) { if (rid == TPS65218_DCDC_3) tps->info[rid]->strobe = 3; diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h index 85e464e..d1db952 100644 --- a/include/linux/mfd/tps65218.h +++ b/include/linux/mfd/tps65218.h @@ -63,6 +63,11 @@ #define TPS65218_CHIPID_CHIP_MASK 0xF8 #define TPS65218_CHIPID_REV_MASK 0x07 +#define TPS65218_REV_1_0 0x0 +#define TPS65218_REV_1_1 0x1 +#define TPS65218_REV_2_0 0x2 +#define TPS65218_REV_2_1 0x3 + #define TPS65218_INT1_VPRG BIT(5) #define TPS65218_INT1_AC BIT(4) #define TPS65218_INT1_PB BIT(3)