From patchwork Fri Mar 11 14:43:55 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laxman Dewangan X-Patchwork-Id: 596240 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id B885914016A for ; Sat, 12 Mar 2016 01:57:30 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932537AbcCKO51 (ORCPT ); Fri, 11 Mar 2016 09:57:27 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:4208 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932509AbcCKO5V (ORCPT ); Fri, 11 Mar 2016 09:57:21 -0500 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com id ; Fri, 11 Mar 2016 06:57:19 -0800 Received: from hqemhub02.nvidia.com ([172.20.150.31]) by hqnvupgp07.nvidia.com (PGP Universal service); Fri, 11 Mar 2016 06:55:57 -0800 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Fri, 11 Mar 2016 06:55:57 -0800 Received: from ldewanganubuntu-System-Product-Name.nvidia.com (172.20.144.16) by hqemhub02.nvidia.com (172.20.150.31) with Microsoft SMTP Server (TLS) id 8.3.406.0; Fri, 11 Mar 2016 06:57:19 -0800 From: Laxman Dewangan To: , , , , , , , CC: , , , , , , , , Laxman Dewangan Subject: [PATCH V9 3/6] pinctrl: add DT binding doc for pincontrol of PMIC max77620/max20024 Date: Fri, 11 Mar 2016 20:13:55 +0530 Message-ID: <1457707438-9842-4-git-send-email-ldewangan@nvidia.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1457707438-9842-1-git-send-email-ldewangan@nvidia.com> References: <1457707438-9842-1-git-send-email-ldewangan@nvidia.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Maxim Semiconductor's PMIC MAX77620/MAX20024 has 8 GPIO pins which act as GPIO as well as special function mode. Add DT binding document to configure pins in function mode as well as pin configuration parameters. Signed-off-by: Laxman Dewangan Acked-by: Rob Herring Acked-by: Linus Walleij --- Changes from V4: - Separate out from pincontrol driver Changes from V5: - Starting patch title with pinctrl instead of DT:pinctrl Changes from V6/V7: - None Changes on V8: - Collected Ack from Linus. .../bindings/pinctrl/pinctrl-max77620.txt | 127 +++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-max77620.txt diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-max77620.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-max77620.txt new file mode 100644 index 0000000..ad4fce3 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-max77620.txt @@ -0,0 +1,127 @@ +Pincontrol driver for MAX77620 Power management IC from Maxim Semiconductor. + +Device has 8 GPIO pins which can be configured as GPIO as well as the +special IO functions. + +Please refer file +for details of the common pinctrl bindings used by client devices, +including the meaning of the phrase "pin configuration node". + +Optional Pinmux properties: +-------------------------- +Following properties are required if default setting of pins are required +at boot. +- pinctrl-names: A pinctrl state named per . +- pinctrl[0...n]: Properties to contain the phandle for pinctrl states per + . + +The pin configurations are defined as child of the pinctrl states node. Each +sub-node have following properties: + +Required properties: +------------------ +- pins: List of pins. Valid values of pins properties are: + gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6, gpio7. + +Optional properties: +------------------- +Following are optional properties defined as pinmux DT binding document +. Absence of properties will leave the configuration +on default. + function, + drive-push-pull, + drive-open-drain, + bias-pull-up, + bias-pull-down. + +Valid values for function properties are: + gpio, lpm-control-in, fps-out, 32k-out, sd0-dvs-in, sd1-dvs-in, + reference-out + +Theres is also customised properties for the GPIO1, GPIO2 and GPIO3. These +customised properties are required to configure FPS configuration parameters +of these GPIOs. Please refer for more +detail of Flexible Power Sequence (FPS). + +- maxim,active-fps-source: FPS source for the GPIOs to get + enabled/disabled when system is in + active state. Valid values are: + - MAX77620_FPS_SRC_0, + FPS source is FPS0. + - MAX77620_FPS_SRC_1, + FPS source is FPS1 + - MAX77620_FPS_SRC_2 and + FPS source is FPS2 + - MAX77620_FPS_SRC_NONE. + GPIO is not controlled + by FPS events and it gets + enabled/disabled by register + access. + Absence of this property will leave + the FPS configuration register for that + GPIO to default configuration. + +- maxim,active-fps-power-up-slot: Sequencing event slot number on which + the GPIO get enabled when + master FPS input event set to HIGH. + Valid values are 0 to 7. + This is applicable if FPS source is + selected as FPS0, FPS1 or FPS2. + +- maxim,active-fps-power-down-slot: Sequencing event slot number on which + the GPIO get disabled when master + FPS input event set to LOW. + Valid values are 0 to 7. + This is applicable if FPS source is + selected as FPS0, FPS1 or FPS2. + +- maxim,suspend-fps-source: This is same as property + "maxim,active-fps-source" but value + get configured when system enters in + to suspend state. + +- maxim,suspend-fps-power-up-slot: This is same as property + "maxim,active-fps-power-up-slot" but + this value get configured into FPS + configuration register when system + enters into suspend. + This is applicable if suspend state + FPS source is selected as FPS0, FPS1 or + +- maxim,suspend-fps-power-down-slot: This is same as property + "maxim,active-fps-power-down-slot" but + this value get configured into FPS + configuration register when system + enters into suspend. + This is applicable if suspend state + FPS source is selected as FPS0, FPS1 or + FPS2. + +Example: +-------- +#include +... +max77620@3c { + + pinctrl-names = "default"; + pinctrl-0 = <&spmic_default>; + + spmic_default: pinmux@0 { + pin_gpio0 { + pins = "gpio0"; + function = "gpio"; + }; + + pin_gpio1 { + pins = "gpio1"; + function = "fps-out"; + maxim,active-fps-source = ; + }; + + pin_gpio2 { + pins = "gpio2"; + function = "fps-out"; + maxim,active-fps-source = ; + }; + }; +};