From patchwork Fri Jan 20 09:47:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jianhua Lu X-Patchwork-Id: 645858 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4C9EDC25B4E for ; Fri, 20 Jan 2023 09:47:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229604AbjATJrm (ORCPT ); Fri, 20 Jan 2023 04:47:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229749AbjATJrl (ORCPT ); Fri, 20 Jan 2023 04:47:41 -0500 Received: from mail-pf1-x436.google.com (mail-pf1-x436.google.com [IPv6:2607:f8b0:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5ABFA5D2; Fri, 20 Jan 2023 01:47:37 -0800 (PST) Received: by mail-pf1-x436.google.com with SMTP id z31so446806pfw.4; Fri, 20 Jan 2023 01:47:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=rPcOeTgKA9sFp6sSVwUMHgyKLqDrFQAyiFwiVpjLuSc=; b=V/AmSrPbxbBAdPP/f05pbBgJQSBg36+auPUDMf8w2+eqdExEerGXZ/06QwEOayvHud 6vBxPxxoEDZg98CjuC0dNk7oM3tF0r+434LHeuGQf84FWmm690TOUVsZCOZ6MAeJV0+3 qRC6VI5ZVrK4outXs1w3w3D/cGvETGZD22m7gILA9t/X1lvFPaUwJlhaNIRJfSEVuZPB R6ccCThYFlhZdSKwwrRaY2X8NUkaqaJmXw1Xes60LQLuda91Sp3A0jMXMWtiDwiPMSuP F4hsnlKEqCmcsFvY7TKnDc2ATNY/IaYWefQF8xyp3ZEi7NL9RFLIDO9d15r8aZIG7x/C LWiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=rPcOeTgKA9sFp6sSVwUMHgyKLqDrFQAyiFwiVpjLuSc=; b=Pcp+sbauUuxwRPtazIjmxa8suiKdl35nWMCO28J7W38QPb6l2NScu5kDNOfYjogn0M 1rdNmHXfrxCfcJDAi2J2gv4YAckpE095MasMKTb7bwJeiX9oqMe2G7RjNRl/NPw0MwW+ 6j+ztXUjzu1lrsH3H1WPFZIbp4EJZ0JHlbiylrHeJ6uQYTJn62C+4hiQy3XF5putG8mP FlsGzblXp53lW92ypuAjbsKwCA7ImZ1ByKQXTaq5/Bnrt7a+U05h51ksdYG22IcWBwE6 fyUTT086GgAgUeGY3C5z+lLMIzAda55I6M3ROgOkhrJh+IRnSPlyxhW3TGYe55gEMrfL g+vg== X-Gm-Message-State: AFqh2koxD4u395MlnZtQ3JxHkYlVGBYYi5ajfUNUkUtls5pEAkDQggHV 9pkZGwZ1sAi+UBTmYfJ9yGs= X-Google-Smtp-Source: AMrXdXvu2Nl2zxBEaAW5n4+lP+XXPnmrE/mONOPpF1bQtyhemIsleknFhv9g6Xd70UYaBXE9V43iQA== X-Received: by 2002:aa7:850c:0:b0:580:ccae:291c with SMTP id v12-20020aa7850c000000b00580ccae291cmr14963503pfn.24.1674208057319; Fri, 20 Jan 2023 01:47:37 -0800 (PST) Received: from localhost.localdomain (n220246252084.netvigator.com. [220.246.252.84]) by smtp.gmail.com with ESMTPSA id u5-20020a626005000000b005815017d348sm19308863pfb.179.2023.01.20.01.47.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Jan 2023 01:47:36 -0800 (PST) From: Jianhua Lu To: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Helge Deller Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-fbdev@vger.kernel.org, Jianhua Lu Subject: [PATCH v7 1/2] dt-bindings: leds: backlight: Add Kinetic KTZ8866 backlight Date: Fri, 20 Jan 2023 17:47:27 +0800 Message-Id: <20230120094728.19967-1-lujianhua000@gmail.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Add Kinetic KTZ8866 backlight binding documentation. Signed-off-by: Jianhua Lu --- Changes in v2: - Remove "items" between "compatible" and "const: kinetic,ktz8866". - Change "additionalProperties" to "unevaluatedProperties". Changes in v3: - Add Krzysztof's R-b. Changes in v4: - Drop Krzysztof's R-b. - Add some new properties. Changes in v5: - Add missing enum under property description. - Rename uncorrect properties. Changes in v6: - Correct wrong property suffix and description. Changes in v7: - Add vddpos and vddeg supply. - Use enable-gpios instead of defining enable pin. .../leds/backlight/kinetic,ktz8866.yaml | 74 +++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml new file mode 100644 index 000000000000..b1d0ade0dfb6 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktz8866.yaml @@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktz8866.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Kinetic Technologies KTZ8866 backlight + +maintainers: + - Jianhua Lu + +description: | + The Kinetic Technologies KTZ8866 is a high efficiency 6-channels-current-sinks + led backlight with dual lcd bias power. + https://www.kinet-ic.com/ktz8866/ + +allOf: + - $ref: common.yaml# + +properties: + compatible: + const: kinetic,ktz8866 + + vddpos-supply: + description: positive boost supply regulator. + + vddneg-supply: + description: negative boost supply regulator. + + enable-gpios: + description: GPIO to use to enable/disable the backlight (HWEN pin). + maxItems: 1 + + current-num-sinks: + description: number of the LED current sinks' channels. + enum: [1, 2, 3, 4, 5, 6] + + current-ramping-time-ms: + description: LED current ramping time in milliseconds. + enum: [2, 4, 8, 16, 32, 64, 128, 192, 256, 320, 384, 448, 512, 576, 640] + + led-ramping-time-ms: + description: | + LED on/off ramping time in milliseconds, note that the case 0 will be mapped + to 512μs because ktz8866 can't ramp faster than it. + enum: [0, 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048, 4096, 8192, 16384] + + kinetic,enable-lcd-bias: + description: Set if we want to output bias power supply for LCD. + type: boolean + +required: + - compatible + - vddpos-supply + - vddneg-supply + - enable-gpios + +unevaluatedProperties: false + +examples: + - | + #include + + backlight { + compatible = "kinetic,ktz8866"; + + vddpos-supply = <&bl_vddpos_5p5>; + vddneg-supply = <&bl_vddneg_5p5>; + enable-gpios = <&tlmm 139 GPIO_ACTIVE_HIGH>; + current-num-sinks = <5>; + current-ramping-time-ms = <128>; + led-ramping-time-ms = <1>; + kinetic,enable-lcd-bias; + };