From patchwork Mon Jul 25 20:52:57 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 1006132 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p6PKrpFP019909 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 25 Jul 2011 20:54:13 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QlS9n-0004vV-HY; Mon, 25 Jul 2011 20:53:43 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1QlS9n-0004lK-5x; Mon, 25 Jul 2011 20:53:43 +0000 Received: from opensource.wolfsonmicro.com ([80.75.67.52] helo=opensource2.wolfsonmicro.com) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QlS9j-0004l1-8Y for linux-arm-kernel@lists.infradead.org; Mon, 25 Jul 2011 20:53:40 +0000 Received: from finisterre.wolfsonmicro.main (unknown [87.246.78.26]) by opensource2.wolfsonmicro.com (Postfix) with ESMTPSA id B1E2D750059; Mon, 25 Jul 2011 21:53:35 +0100 (BST) Received: from broonie by finisterre.wolfsonmicro.main with local (Exim 4.76) (envelope-from ) id 1QlS9e-0006sC-TD; Mon, 25 Jul 2011 21:53:34 +0100 From: Mark Brown To: Kukjin Kim Subject: [PATCH] ARM: S3C64XX: Hook up GPIO initiated DVS on Cragganmore Date: Mon, 25 Jul 2011 21:52:57 +0100 Message-Id: <1311627177-26388-1-git-send-email-broonie@opensource.wolfsonmicro.com> X-Mailer: git-send-email 1.7.5.4 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110725_165339_461241_6DE19945 X-CRM114-Status: GOOD ( 11.46 ) X-Spam-Score: -1.2 (-) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (-1.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -1.2 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain Cc: patches@opensource.wolfsonmicro.com, linux-arm-kernel@lists.infradead.org, Mark Brown X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Mon, 25 Jul 2011 20:54:13 +0000 (UTC) Allow us to ramp VDDARM quickly by using a GPIO to signal a voltage change instead of doing a register write. Signed-off-by: Mark Brown --- arch/arm/mach-s3c64xx/mach-crag6410.c | 9 +++++++++ 1 files changed, 9 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c index d59afa1..2005d5f 100644 --- a/arch/arm/mach-s3c64xx/mach-crag6410.c +++ b/arch/arm/mach-s3c64xx/mach-crag6410.c @@ -376,6 +376,12 @@ static struct pca953x_platform_data crag6410_pca_data = { .irq_base = 0, }; +/* VDDARM is controlled by DVS1 connected to GPK(0) */ +static struct wm831x_buckv_pdata vddarm_pdata = { + .dvs_control_src = 1, + .dvs_gpio = S3C64XX_GPK(0), +}; + static struct regulator_consumer_supply vddarm_consumers[] __initdata = { REGULATOR_SUPPLY("vddarm", NULL), }; @@ -391,6 +397,7 @@ static struct regulator_init_data vddarm __initdata = { .num_consumer_supplies = ARRAY_SIZE(vddarm_consumers), .consumer_supplies = vddarm_consumers, .supply_regulator = "WALLVDD", + .driver_data = &vddarm_pdata, }; static struct regulator_init_data vddint __initdata = { @@ -526,6 +533,8 @@ static struct wm831x_pdata crag_pmic_pdata __initdata = { .backup = &banff_backup_pdata, .gpio_defaults = { + /* GPIO5: DVS1_REQ - CMOS, DBVDD, active high */ + [4] = WM831X_GPN_DIR | WM831X_GPN_POL | WM831X_GPN_ENA | 0x8, /* GPIO11: Touchscreen data - CMOS, DBVDD, active high*/ [10] = WM831X_GPN_POL | WM831X_GPN_ENA | 0x6, /* GPIO12: Touchscreen pen down - CMOS, DBVDD, active high*/