From patchwork Thu Dec 17 15:00:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ChiYuan Huang X-Patchwork-Id: 11979987 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 E153CC3526B for ; Thu, 17 Dec 2020 15:02:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B5293235F9 for ; Thu, 17 Dec 2020 15:02:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729044AbgLQPCK (ORCPT ); Thu, 17 Dec 2020 10:02:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41348 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729037AbgLQPCJ (ORCPT ); Thu, 17 Dec 2020 10:02:09 -0500 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4E9AC0611CC; Thu, 17 Dec 2020 07:01:11 -0800 (PST) Received: by mail-pj1-x1030.google.com with SMTP id f14so3788474pju.4; Thu, 17 Dec 2020 07:01:11 -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=mvtZ/A2o5dxmBEUAMb5gj2Nsf7pPvcRBvo5uPvFwDHA=; b=P5S84wnBWrc+jI977mdnBx8BHjwaLXu+wGQZucy9i+KHvwtgAq3f6PmSQf45pmX9u4 6tw1v33TxjIdmApm69r1aNbvKfTb3FXd0XI87QmRmpV02qsbFwWZf0ouK1bjIQYGhAND q90Uj8kZ8zePACluJZTkaMHlyLrX6YApLih33jpLc9/31+a2kje1lG2LHVFmxLuRcKc2 pfMrwLhFSGBPCNRf03x+9e3yJjKV5hzH+o/8A/NMQy6gVw3KXPMUVPY0dYzEx99xQoUs cpQT6saVYrbtqZHtxcY29gUBJnF8OuFjqEy6dC9rXGuUNEp38tKHx5JBzK2n5ZGGwI5d ycCw== 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=mvtZ/A2o5dxmBEUAMb5gj2Nsf7pPvcRBvo5uPvFwDHA=; b=Q3Clnre9Vmmz6GfZ8PH0LLwSMRn15HQ7WvGxISbKVVOvzVTbMd83SETvgbmhQsO6iq s5/ch+fFWTu9Gp5nLWVZ4aAP8QoE8bhMoPZr/MFN28ifs4PgfJs5omWzjN9SHUwuJHUv 5vwPbrbzngdpD5VUANG6dxl9HXRw8hx3fqC5Q1sX7w9twBWyjMufjYqPCAk88wq46hEF j5lTcOWdk6RmPrhNFclm/uYH2e27pJ8qGUEDDgAbopIGmT1K24+7bbFLuivcldbtN1jY bN83hl/D63Y3DoRSM06bu0esFkE9TCiFvsd3dczsczBfwwI7A9t/0i6aX8akNCTKrnDm tp1w== X-Gm-Message-State: AOAM533tHP17YhXxDI39/FD4lgJS5+RFsu5TePU9AVuo/E3rz4i7gYWh jmRRf9hSHwG4ajSyoYRo9Q4= X-Google-Smtp-Source: ABdhPJxEqwPbhdTjXuC65gja94BfYxBMGCw0JrdDxIOxyieZUWD2PMka+Egar82GTDNdonGuOay/Wg== X-Received: by 2002:a17:902:d716:b029:dc:24a1:77a2 with SMTP id w22-20020a170902d716b02900dc24a177a2mr3917114ply.64.1608217269785; Thu, 17 Dec 2020 07:01:09 -0800 (PST) Received: from localhost.localdomain (1-171-2-187.dynamic-ip.hinet.net. [1.171.2.187]) by smtp.gmail.com with ESMTPSA id o140sm6189074pfd.26.2020.12.17.07.01.06 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 17 Dec 2020 07:01:09 -0800 (PST) From: cy_huang To: lee.jones@linaro.org, lgirdwood@gmail.com, broonie@kernel.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, b.zolnierkie@samsung.com Cc: dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, ChiYuan Huang Subject: [PATCH v5 4/6] mfd: rt4831: Adds DT binding document for Richtek RT4831 core Date: Thu, 17 Dec 2020 23:00:42 +0800 Message-Id: <1608217244-314-4-git-send-email-u0084500@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1608217244-314-1-git-send-email-u0084500@gmail.com> References: <1608217244-314-1-git-send-email-u0084500@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org From: ChiYuan Huang Adds DT binding document for Richtek RT4831 core. Signed-off-by: ChiYuan Huang --- This patch depends on "backlight: rt4831: Adds DT binding document for Richtek RT4831 backlight" "regulator: rt4831: Adds DT binding document for Richtek RT4831 DSV regulator" since v5 - Revert mfd dt-binding to v3 patch. since v4 - remove v3 regulator binding patch, directly merge it into mfd binding. since v3 - Move include/dt-bindings/leds/rt4831-backlight.h to patch 0002. - Add dual license tag in mfd binding document. since v2 - Add regulator-allow-bypass flag in DSVLCM. --- .../devicetree/bindings/mfd/richtek,rt4831.yaml | 90 ++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml diff --git a/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml new file mode 100644 index 00000000..4762eb1 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/richtek,rt4831.yaml @@ -0,0 +1,90 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%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 multifunctional device that can provide power to the LCD display + and LCD backlight. + + For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V. + It's sufficient to meet the current LCD power requirement. + + For the LCD backlight, it can provide four channel WLED driving capability. + Each channel 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>; + regulator-allow-bypass; + }; + 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 ; + }; + }; + };