From patchwork Mon Nov 2 03:13:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: cy_huang X-Patchwork-Id: 314594 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F13FCC388F2 for ; Mon, 2 Nov 2020 03:13:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B26E820870 for ; Mon, 2 Nov 2020 03:13:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="pG6myEN7" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727735AbgKBDNf (ORCPT ); Sun, 1 Nov 2020 22:13:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57164 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727450AbgKBDNe (ORCPT ); Sun, 1 Nov 2020 22:13:34 -0500 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 74827C0617A6; Sun, 1 Nov 2020 19:13:33 -0800 (PST) Received: by mail-pg1-x542.google.com with SMTP id r10so9555554pgb.10; Sun, 01 Nov 2020 19:13:33 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=HCdXlX48a8RvmdjHj/hlqMoEQOf95jWIp2S8h1+Enm4=; b=pG6myEN7HobMU6QX0JehxmqLDwQzDyh9qseEX7wynfKMF1iim9xl+ab2wIMZU6miJU gIFYvbmItyGZBpn7U8kRhoDoHyLdJTY4TwmJrD+CDW5oSFNwPqJTZeDpA+76fbcCBtle ILZ5EDfP+Rs8ehl+Lub8IVgDWU9w2G5D8Z0YvC186HS9ck241gb3kZF1hucWQEDnuzT+ wUlHSNINRkbQzXA2h80oV8hUyXQSNXlUloCKaCGfKal+gKiJS+mnwwiWPYASCu9gw67n fon+/iObRB4Ud0sH/enbGkvwFGvVTlqQrdqVF2HcJEDofsL2qFRG5mgN4Jbi9YZiLhfx hULw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=HCdXlX48a8RvmdjHj/hlqMoEQOf95jWIp2S8h1+Enm4=; b=NZO4orKe/X3qgo5aJJW97UNGB1pFHNhHLubOf7kbuuJiHZETClQLN4KcJMZWt06Yv6 yAGgNqG+yQUFoq7XSmAOV1P6hriQGSVnGZl9PrgySRh09sSVZHvFR/fiGTFmC2JVQoTZ 1ddvIc+9csE/sN3QwSc5eL2d8vrITWa6Yftyy4vUIvjLoqiCTsHyJ/PckXqERZupuXhd 5xo+Qj6cpsXiwAUyna8V1CQY+LnpBLpQ8yWqM84q9n9k2Qs8VrqW3Dq8kBkyAPlz6pPJ e9kqIdQtmey8mYbDyb//ihJyAO/OF2NQmypd0xQrYiUrcOvyNSnZvqzU0/OAiY5heLi1 Vgdw== X-Gm-Message-State: AOAM533P1W2REsIE1QLwJ2kykb/pMAAlyfeMVSZVloQEZWqQMYML7gzS qRQAe9JOQb6qfFbqD4dQ+wM= X-Google-Smtp-Source: ABdhPJwqnHoHdtkDsHiamjO3frM4FpErtxZdhAgZvszTFJcluKh4f1X0fiHQOC/Snwwzwns/4S/XaA== X-Received: by 2002:aa7:989a:0:b029:18a:8d62:e024 with SMTP id r26-20020aa7989a0000b029018a8d62e024mr10920208pfl.71.1604286812982; Sun, 01 Nov 2020 19:13:32 -0800 (PST) Received: from localhost.localdomain ([2402:7500:57c:483e:4828:fb14:ce19:d9d0]) by smtp.gmail.com with ESMTPSA id y137sm12368408pfc.77.2020.11.01.19.13.30 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sun, 01 Nov 2020 19:13:32 -0800 (PST) From: cy_huang To: lee.jones@linaro.org, robh+dt@kernel.org Cc: cy_huang@richtek.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATCH v1 2/2] mfd: rt4505: Adds DT binding document for Richtek RT4831 MFD core Date: Mon, 2 Nov 2020 11:13:23 +0800 Message-Id: <1604286803-20698-2-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1604286803-20698-1-git-send-email-u0084500@gmail.com> References: <1604286803-20698-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: ChiYuan Huang Adds DT binding document for Richtek RT4831 MFD core. Signed-off-by: ChiYuan Huang --- .../devicetree/bindings/mfd/richtek,rt4831.yaml | 89 ++++++++++++++++++++++ include/dt-bindings/leds/rt4831-backlight.h | 23 ++++++ 2 files changed, 112 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml create mode 100644 include/dt-bindings/leds/rt4831-backlight.h diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml new file mode 100644 index 00000000..c602d50 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml @@ -0,0 +1,89 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mfd/richtek,rt4831.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Richtek RT4831 DSV and Backlight Integrated IC + +maintainers: + - ChiYuan Huang + +description: | + RT4831 is a mutifunctional device that can provide display panel power for + positive/negative voltage and also display panel wled driving. + + For the display voltage output, the range is about 4V to 6.5V. It is sufficient + to meet the current display panel design. + + For the panel backlight, it can provide four channels driving capability + Each driving current is up to 30mA + + Datasheet is available at + https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf + +properties: + compatible: + const: richtek,rt4831 + + reg: + description: I2C device address. + maxItems: 1 + + enable-gpios: + description: | + GPIO to enable/disable the chip. It is optional. + Some usage directly tied this pin to follow VIO 1.8V power on sequence. + maxItems: 1 + + regulators: + $ref: ../regulator/richtek,rt4831-regulator.yaml + + backlight: + $ref: ../leds/backlight/richtek,rt4831-backlight.yaml + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + + rt4831@11 { + compatible = "richtek,rt4831"; + reg = <0x11>; + + regulators { + DSVLCM { + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <7150000>; + }; + DSVP { + regulator-name = "rt4831-dsvp"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6500000>; + regulator-boot-on; + }; + DSVN { + regulator-name = "rt4831-dsvn"; + regulator-min-microvolt = <4000000>; + regulator-max-microvolt = <6500000>; + regulator-boot-on; + }; + }; + + backlight { + compatible = "richtek,rt4831-backlight"; + default-brightness = <1024>; + max-brightness = <2048>; + richtek,bled-ovp-sel = /bits/ 8 ; + richtek,channel-use = /bits/ 8 ; + }; + }; + }; diff --git a/include/dt-bindings/leds/rt4831-backlight.h b/include/dt-bindings/leds/rt4831-backlight.h new file mode 100644 index 00000000..7084906 --- /dev/null +++ b/include/dt-bindings/leds/rt4831-backlight.h @@ -0,0 +1,23 @@ +/* + * This header provides constants for rt4831 backlight bindings. + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#ifndef _DT_BINDINGS_RT4831_BACKLIGHT_H +#define _DT_BINDINGS_RT4831_BACKLIGHT_H + +#define RT4831_BLOVPLVL_17V 0 +#define RT4831_BLOVPLVL_21V 1 +#define RT4831_BLOVPLVL_25V 2 +#define RT4831_BLOVPLVL_29V 3 + +#define RT4831_BLED_CH1EN (1 << 0) +#define RT4831_BLED_CH2EN (1 << 1) +#define RT4831_BLED_CH3EN (1 << 2) +#define RT4831_BLED_CH4EN (1 << 3) +#define RT4831_BLED_ALLCHEN ((1 << 4) - 1) + +#endif /* _DT_BINDINGS_RT4831_BACKLIGHT_H */