From patchwork Thu Dec 3 18:02:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 7762341 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 3EF7B9F30B for ; Thu, 3 Dec 2015 18:04:45 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6C2C920481 for ; Thu, 3 Dec 2015 18:04:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A424320434 for ; Thu, 3 Dec 2015 18:04:43 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a4YDS-0002PO-Mw; Thu, 03 Dec 2015 18:02:50 +0000 Received: from lists.s-osg.org ([54.187.51.154]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1a4YDH-0002IJ-I6 for linux-arm-kernel@lists.infradead.org; Thu, 03 Dec 2015 18:02:40 +0000 Received: from minerva.localdomain (unknown [200.3.249.195]) by lists.s-osg.org (Postfix) with ESMTPSA id 6E6D946328; Thu, 3 Dec 2015 10:02:18 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Subject: [PATCH 1/2] ARM: dts: omap3-igep0020: Use MMC pwrseq to init SDIO WiFi Date: Thu, 3 Dec 2015 15:02:08 -0300 Message-Id: <1449165729-993-2-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1449165729-993-1-git-send-email-javier@osg.samsung.com> References: <1449165729-993-1-git-send-email-javier@osg.samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151203_100239_646881_30A875E5 X-CRM114-Status: UNSURE ( 9.76 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.6 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Javier Martinez Canillas , Tony Lindgren , Enric Balletbo i Serra , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When the WiFi support was added to the IGEP0020 board, the MMC subsystem did not provide a mechanism to define power sequence providers. So a DT hack was used to toggle the WiFi chip reset and power down pins by using fake fixed regulators whose enable GPIO was the GPIOs connected to these pins. But now the simple MMC power sequence provider can be used for this and the workaround removed. Signed-off-by: Javier Martinez Canillas Acked-by: Enric Balletbo Serra --- arch/arm/boot/dts/omap3-igep0020.dts | 24 ++++++++---------------- 1 file changed, 8 insertions(+), 16 deletions(-) diff --git a/arch/arm/boot/dts/omap3-igep0020.dts b/arch/arm/boot/dts/omap3-igep0020.dts index 3835e1569c29..33d6b4ead092 100644 --- a/arch/arm/boot/dts/omap3-igep0020.dts +++ b/arch/arm/boot/dts/omap3-igep0020.dts @@ -15,25 +15,17 @@ model = "IGEPv2 Rev. C (TI OMAP AM/DM37x)"; compatible = "isee,omap3-igep0020", "ti,omap36xx", "ti,omap3"; - /* Regulator to trigger the WIFI_PDN signal of the Wifi module */ - lbee1usjyc_pdn: lbee1usjyc_pdn { + vmmcsdio_fixed: fixedregulator-mmcsdio { compatible = "regulator-fixed"; - regulator-name = "regulator-lbee1usjyc-pdn"; + regulator-name = "vmmcsdio_fixed"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; - gpio = <&gpio5 10 GPIO_ACTIVE_HIGH>; /* gpio_138 - WIFI_PDN */ - startup-delay-us = <10000>; - enable-active-high; }; - /* Regulator to trigger the RESET_N_W signal of the Wifi module */ - lbee1usjyc_reset_n_w: lbee1usjyc_reset_n_w { - compatible = "regulator-fixed"; - regulator-name = "regulator-lbee1usjyc-reset-n-w"; - regulator-min-microvolt = <3300000>; - regulator-max-microvolt = <3300000>; - gpio = <&gpio5 11 GPIO_ACTIVE_HIGH>; /* gpio_139 - RESET_N_W */ - enable-active-high; + mmc2_pwrseq: mmc2_pwrseq { + compatible = "mmc-pwrseq-simple"; + reset-gpios = <&gpio5 11 GPIO_ACTIVE_LOW>, /* gpio_139 - RESET_N_W */ + <&gpio5 10 GPIO_ACTIVE_LOW>; /* gpio_138 - WIFI_PDN */ }; }; @@ -51,8 +43,8 @@ &mmc2 { pinctrl-names = "default"; pinctrl-0 = <&mmc2_pins &lbee1usjyc_pins>; - vmmc-supply = <&lbee1usjyc_pdn>; - vmmc_aux-supply = <&lbee1usjyc_reset_n_w>; + vmmc-supply = <&vmmcsdio_fixed>; + mmc-pwrseq = <&mmc2_pwrseq>; bus-width = <4>; non-removable; };