From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7F701C433EF for ; Mon, 13 Jun 2022 11:15:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=aTO1c0dci+Y7KG2IiWp04bdwcsfRBT6L00Vv/udwz50=; b=ET+RSbw1d36P3x feug+AzCfkf2YNXj2XpnYImzOQSFYtHuWe8lAAKyrsU5eHgMFw3vKxBuZDxZajW9/KljqLlcDjsLa VPuARv4e0BKtNGZbvfT6tFB+a6gSmqyj+A9uf/yqv9hBRwu0YQE3fXWPRlmtAqHD4Qa1TGswTlfd2 T6en+hm1iTQInjvbcsJ277v40l+7oZIwF1ejgwNfz2LYEtYyDOAoPjZDe4I+Qsjr55D5UGPsmBqep juMhfZZvSozFJ+mZTS31OwaTRnqiyGelLMkXVxsI0gWjHYVsSBz9fewCyhwSKe8AfEDpuLRv0ggYc FoApFZyNptAc9F4Osc4A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0i1d-00373L-Pr; Mon, 13 Jun 2022 11:14:29 +0000 Received: from mail-pl1-x62f.google.com ([2607:f8b0:4864:20::62f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1o0i0K-0036N1-04; Mon, 13 Jun 2022 11:13:09 +0000 Received: by mail-pl1-x62f.google.com with SMTP id u18so4828027plb.3; Mon, 13 Jun 2022 04:13:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PNKL5EoQe9yNQuWSwGWw4HpwNtWpyytf5bVWi/2uSYA=; b=irUn2d6BF9k7/P7W7MnusQ2y6EAb7Yx6AVX6GzE3wbyM8y6CUrUTih/qiJ1axCO4AN B2t588m6wRAAs2572apEbLnl8l7NhOGqetTjQevrbCL2OI1fwdz3qLC3pbGxUC7Wzj+z hXx4vu06puhWg8Fepra01DMfBkXJvctaTbfCj6uJzYnX81nUXuhrzz8L9SG0plqiJUjx CbyZovfivyzHblzLa+MKTC5klfKuLd9PmZNbujf2eJRhcNzpnIWKJuVjJ0H8YhcRqFNi ufGgVrB5qORousrYENy/DpjK4bGU7S7YySVXIlNac2qOkBMPtz1ZI3xQ34OlX66VkMLE qhVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PNKL5EoQe9yNQuWSwGWw4HpwNtWpyytf5bVWi/2uSYA=; b=U10XKzv91R9+8M+qze3snkvdeR5OTBUg6IT2283g66dY04UgTACv0nAo9lJrPbkvuu oTWD64VL8QaXYN148ME/y3p9PTE1tWVwgZlNYVwRqc6KFN1iATab+sIu1FJmhrU1vqYt 2NYY1koaBSK54+zoPF5v6mB33RigR+ro2W5012NQsqzuhWiO764PlHT2cvRo7qFGyM1T T2SEwD45ErddkAO2PQMxwUeUBZOMED8HGqzaBGGMLbPF/9++MELlcNP6xSCAf9P/iwAg tSciHGUdU+HpFMH0q/Cuz/xbLsS2Zz6ViCaIOeWjgTyoLXVyzgGahG6s0tbY4iCr7C1m ryGQ== X-Gm-Message-State: AOAM530csQ9tjBmz9Dg03b/ZSDfcfiUq5qlpyCCcEzZsmYiB6QdkgHs9 ja94VrZk+ExO8s3RurXL2xc= X-Google-Smtp-Source: ABdhPJwA0uTKm6Harp/uy6rve75bJedJD8dBySejgYRVOmkwylT9noUd8UmThrqE7/9jk0JuIyuc6A== X-Received: by 2002:a17:902:8d98:b0:168:a310:3ea6 with SMTP id v24-20020a1709028d9800b00168a3103ea6mr23326338plo.9.1655118787075; Mon, 13 Jun 2022 04:13:07 -0700 (PDT) Received: from RD-3580-24288.rt.l (42-72-115-109.emome-ip.hinet.net. [42.72.115.109]) by smtp.gmail.com with ESMTPSA id g17-20020a056a000b9100b0051b4e53c487sm5199989pfj.45.2022.06.13.04.13.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jun 2022 04:13:06 -0700 (PDT) From: ChiaEn Wu To: jic23@kernel.org, lars@metafoo.de, matthias.bgg@gmail.com, lee.jones@linaro.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: linux-iio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-fbdev@vger.kernel.org, szunichen@gmail.com, ChiYuan Huang Subject: [PATCH v2 05/15] dt-bindings: backlight: Add Mediatek MT6370 backlight Date: Mon, 13 Jun 2022 19:11:36 +0800 Message-Id: <20220613111146.25221-6-peterwu.pub@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220613111146.25221-1-peterwu.pub@gmail.com> References: <20220613111146.25221-1-peterwu.pub@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220613_041308_139134_6BFEC2D1 X-CRM114-Status: GOOD ( 12.67 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: ChiYuan Huang Add mt6370 backlight binding documentation. Signed-off-by: ChiYuan Huang --- .../backlight/mediatek,mt6370-backlight.yaml | 107 ++++++++++++++++++ 1 file changed, 107 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml diff --git a/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml new file mode 100644 index 000000000000..25a05e607e83 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/mediatek,mt6370-backlight.yaml @@ -0,0 +1,107 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/mediatek,mt6370-backlight.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Mediatek MT6370 Backlight + +maintainers: + - ChiaEn Wu + +description: | + This module is part of the MT6370 MFD device. + The MT6370 Backlight WLED driver supports up to a 29V output voltage for + 4 channels of 8 series WLEDs. Each channel supports up to 30mA of current + capability with 2048 current steps (11 bits) in exponential or linear + mapping curves. + +allOf: + - $ref: common.yaml# + +properties: + compatible: + const: mediatek,mt6370-backlight + + default-brightness: + minimum: 0 + maximum: 2048 + + max-brightness: + minimum: 0 + maximum: 2048 + + enable-gpios: + description: External backlight 'enable' pin + maxItems: 1 + + mediatek,bled-pwm-enable: + description: | + Enable external PWM input for backlight dimming + type: boolean + + mediatek,bled-pwm-hys-enable: + description: | + Enable the backlight input-hysteresis for PWM mode + type: boolean + + mediatek,bled-pwm-hys-input-bit: + $ref: /schemas/types.yaml#/definitions/uint8 + enum: [0, 1, 2, 3] + description: | + The selection of the upper and lower bounds threshold of backlight + PWM resolution. If we choose selection 3 (6 bits), the variation of PWM + resolution needs over than 64 steps (2^6). + value mapping: + - 0: 1 + - 1: 2 + - 2: 4 + - 3: 6 + + mediatek,bled-ovp-shutdown: + description: | + Enable the backlight shutdown when OVP level triggered + type: boolean + + mediatek,bled-ovp-microvolt: + enum: [0, 1, 2, 3] + description: | + Backlight OVP level selection. + value mapping: + - 0: 17000000 + - 1: 21000000 + - 2: 25000000 + - 3: 29000000 + + mediatek,bled-ocp-shutdown: + description: | + Enable the backlight shutdown when OCP level triggerred. + type: boolean + + mediatek,bled-ocp-microamp: + enum: [0, 1, 2, 3] + description: | + Backlight OC level selection. + value mapping: + - 0: 900000 + - 1: 1200000 + - 2: 1500000 + - 3: 1800000 + + mediatek,bled-channel-use: + $ref: /schemas/types.yaml#/definitions/uint8 + description: | + Backlight LED channel to be used. + Each bit mapping to: + - 0: CH4 + - 1: CH3 + - 2: CH2 + - 3: CH1 + minimum: 1 + maximum: 15 + +required: + - compatible + - mediatek,bled-channel-use + +additionalProperties: false -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel