From patchwork Tue Jun 7 08:53:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 12871549 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 AC1A6C433EF for ; Tue, 7 Jun 2022 08:54:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236520AbiFGIyG (ORCPT ); Tue, 7 Jun 2022 04:54:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58356 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238853AbiFGIxt (ORCPT ); Tue, 7 Jun 2022 04:53:49 -0400 Received: from mail-ej1-x636.google.com (mail-ej1-x636.google.com [IPv6:2a00:1450:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 78FE1E15FF for ; Tue, 7 Jun 2022 01:53:47 -0700 (PDT) Received: by mail-ej1-x636.google.com with SMTP id n10so33802275ejk.5 for ; Tue, 07 Jun 2022 01:53:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=9z6WrFwb2fPXlQl3Uyym8/TioSfH3qqjKkRFpZGE28g=; b=qhsiWn7NWGHI1rEEL3xWQ3iES5hVECosmvK1IierJBoeDO0Dx/wYKX5UFNRVXZEb8z svuBwCCwRUpMel616GqqyT5+KzgcswKzIe1dXuwlZTtafjBV7K3DLfKx2CFuyRzKv2h7 KJKuHjHez4pafG48WzeJ2XmOY8FIolXTh+n27xqPeeCY7Q+vjH0Mv5xS8T4O/KmanaNo 7np3TLDZuBek270r5UHGV7CDjlY8jUn2QyTNJA9MR7HAqVwEYB81vjSgTqW1qikASxce yEKjNSBZeIQMorBWeKGjGK6hjojAuHI6xSxBpJLfTfaHLTW001kGUo3GfIrvLkoOyNgp 5CNA== 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:mime-version :content-transfer-encoding; bh=9z6WrFwb2fPXlQl3Uyym8/TioSfH3qqjKkRFpZGE28g=; b=A359SsSS/ozYgmtlrx/hkBrSu09/PtBfcLhjZJddjVo2NqBoPPuti4mixT0berBFYr 55r3olAhiJR05i7NUXP2R1RUP5DiClaWDqb6PybYEytbS+AuODe6MGkY3QmYYF1leB67 gu6aCoVBqdkGra72oQfy09/fzCYoE2OX59M7mMIeH5SJ9MzJ+SPDYKqzdeJ21rMhbdfn ZEpTU+ce7vhGDiOYIP2uNrOtCCE2v2dhsDSc3NqgqLQTP0raVsxpA1q5pSgYP5x7R7Ix z0uzlvoV9x+0hNkB6DRamxUigaQnrEvRkNI/Sk6udKRjyAaZx4wXaBZ2l6bgT5mu77QT VtHw== X-Gm-Message-State: AOAM532xnB8ToaZDp03myxtSYI+ZICNQF+iuH0BZtmUN3j+ty+iEZ8H/ LTZcTGFvyKohEaV/vT0bs/Laow== X-Google-Smtp-Source: ABdhPJwIZgnqzzbhzjlmEhZvB2RsAnSMQYSXIpeaomKW9o+4SvNwnoMf+SXfJ+psJEfcfXByw7jtdg== X-Received: by 2002:a17:906:d195:b0:711:357a:d33d with SMTP id c21-20020a170906d19500b00711357ad33dmr13454683ejz.517.1654592025898; Tue, 07 Jun 2022 01:53:45 -0700 (PDT) Received: from localhost.localdomain (xdsl-188-155-176-92.adslplus.ch. [188.155.176.92]) by smtp.gmail.com with ESMTPSA id k16-20020a1709061c1000b00705cdfec71esm7176703ejg.7.2022.06.07.01.53.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 01:53:45 -0700 (PDT) From: Krzysztof Kozlowski To: Pavel Machek , Rob Herring , Krzysztof Kozlowski , Alim Akhtar , Jacek Anaszewski , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: Krzysztof Kozlowski Subject: [PATCH 1/3] dt-bindings: leds: skyworks,aat1290: convert to dtschema Date: Tue, 7 Jun 2022 10:53:41 +0200 Message-Id: <20220607085343.72414-1-krzysztof.kozlowski@linaro.org> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Convert the Skyworks Solutions, Inc. AAT1290 Current Regulator bindings to DT Schema. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Rob Herring --- .../devicetree/bindings/leds/leds-aat1290.txt | 77 --------------- .../bindings/leds/skyworks,aat1290.yaml | 96 +++++++++++++++++++ 2 files changed, 96 insertions(+), 77 deletions(-) delete mode 100644 Documentation/devicetree/bindings/leds/leds-aat1290.txt create mode 100644 Documentation/devicetree/bindings/leds/skyworks,aat1290.yaml diff --git a/Documentation/devicetree/bindings/leds/leds-aat1290.txt b/Documentation/devicetree/bindings/leds/leds-aat1290.txt deleted file mode 100644 index 62ed17ec075b..000000000000 --- a/Documentation/devicetree/bindings/leds/leds-aat1290.txt +++ /dev/null @@ -1,77 +0,0 @@ -* Skyworks Solutions, Inc. AAT1290 Current Regulator for Flash LEDs - -The device is controlled through two pins: FL_EN and EN_SET. The pins when, -asserted high, enable flash strobe and movie mode (max 1/2 of flash current) -respectively. In order to add a capability of selecting the strobe signal source -(e.g. CPU or camera sensor) there is an additional switch required, independent -of the flash chip. The switch is controlled with pin control. - -Required properties: - -- compatible : Must be "skyworks,aat1290". -- flen-gpios : Must be device tree identifier of the flash device FL_EN pin. -- enset-gpios : Must be device tree identifier of the flash device EN_SET pin. - -Optional properties: -- pinctrl-names : Must contain entries: "default", "host", "isp". Entries - "default" and "host" must refer to the same pin configuration - node, which sets the host as a strobe signal provider. Entry - "isp" must refer to the pin configuration node, which sets the - ISP as a strobe signal provider. - -A discrete LED element connected to the device must be represented by a child -node - see Documentation/devicetree/bindings/leds/common.txt. - -Required properties of the LED child node: -- led-max-microamp : see Documentation/devicetree/bindings/leds/common.txt -- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt - Maximum flash LED supply current can be calculated using - following formula: I = 1A * 162kohm / Rset. -- flash-max-timeout-us : see Documentation/devicetree/bindings/leds/common.txt - Maximum flash timeout can be calculated using following - formula: T = 8.82 * 10^9 * Ct. - -Optional properties of the LED child node: -- function : see Documentation/devicetree/bindings/leds/common.txt -- color : see Documentation/devicetree/bindings/leds/common.txt -- label : see Documentation/devicetree/bindings/leds/common.txt (deprecated) - -Example (by Ct = 220nF, Rset = 160kohm and exynos4412-trats2 board with -a switch that allows for routing strobe signal either from the host or from -the camera sensor): - -#include "exynos4412.dtsi" -#include - -led-controller { - compatible = "skyworks,aat1290"; - flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>; - enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>; - - pinctrl-names = "default", "host", "isp"; - pinctrl-0 = <&camera_flash_host>; - pinctrl-1 = <&camera_flash_host>; - pinctrl-2 = <&camera_flash_isp>; - - camera_flash: led { - function = LED_FUNCTION_FLASH; - color = ; - led-max-microamp = <520833>; - flash-max-microamp = <1012500>; - flash-max-timeout-us = <1940000>; - }; -}; - -&pinctrl_0 { - camera_flash_host: camera-flash-host { - samsung,pins = "gpj1-0"; - samsung,pin-function = <1>; - samsung,pin-val = <0>; - }; - - camera_flash_isp: camera-flash-isp { - samsung,pins = "gpj1-0"; - samsung,pin-function = <1>; - samsung,pin-val = <1>; - }; -}; diff --git a/Documentation/devicetree/bindings/leds/skyworks,aat1290.yaml b/Documentation/devicetree/bindings/leds/skyworks,aat1290.yaml new file mode 100644 index 000000000000..919ee0e30b10 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/skyworks,aat1290.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/skyworks,aat1290.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Skyworks Solutions, Inc. AAT1290 Current Regulator for Flash LEDs + +maintainers: + - Jacek Anaszewski + - Krzysztof Kozlowski + +description: | + The device is controlled through two pins:: FL_EN and EN_SET. The pins when, + asserted high, enable flash strobe and movie mode (max 1/2 of flash current) + respectively. In order to add a capability of selecting the strobe signal + source (e.g. CPU or camera sensor) there is an additional switch required, + independent of the flash chip. The switch is controlled with pin control. + +properties: + compatible: + const: skyworks,aat1290 + + enset-gpios: + maxItems: 1 + description: EN_SET pin + + flen-gpios: + maxItems: 1 + description: FL_EN pin + + led: + $ref: common.yaml# + unevaluatedProperties: false + + properties: + led-max-microamp: true + + flash-max-microamp: + description: | + Maximum flash LED supply current can be calculated using following + formula:: I = 1A * 162 kOhm / Rset. + + flash-max-timeout-us: + description: | + Maximum flash timeout can be calculated using following formula:: + T = 8.82 * 10^9 * Ct. + + required: + - flash-max-microamp + - flash-max-timeout-us + - led-max-microamp + + pinctrl-names: + items: + - const: default + - const: host + - const: isp + + pinctrl-0: true + pinctrl-1: true + pinctrl-2: true + +required: + - compatible + - enset-gpios + - flen-gpios + - led + +additionalProperties: false + +examples: + - | + #include + #include + + // Ct = 220 nF, Rset = 160 kOhm + led-controller { + compatible = "skyworks,aat1290"; + flen-gpios = <&gpj1 1 GPIO_ACTIVE_HIGH>; + enset-gpios = <&gpj1 2 GPIO_ACTIVE_HIGH>; + + pinctrl-names = "default", "host", "isp"; + pinctrl-0 = <&camera_flash_host>; + pinctrl-1 = <&camera_flash_host>; + pinctrl-2 = <&camera_flash_isp>; + + led { + label = "flash"; + function = LED_FUNCTION_FLASH; + color = ; + led-max-microamp = <520833>; + flash-max-microamp = <1012500>; + flash-max-timeout-us = <1940000>; + }; + };