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Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1708896875; bh=jbmr+ls+8vmNT0RepVMQNTeMhYsEBu7U/6wroDdbQ9s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UdI/plJrktm39vQGTA+E6G9Wvzhhv9+J9Wa3fo2OVexTPQNFgtmE0FLUefQO0w28e bLcWdo0pcrDgWknVV32mlrB0LvCg2oCO8ydpTfHpyIPfblmDVM8ooE01+AfYi/JFL8 GXxbGDEiXtfvAD3bPFD/SLGmhTFYUtAoy0cTBEuMiayDRkKF3+uHorHMwTf8bHlcKl 7fcvxaiHF3uJXc+oReQl2TAirYE7LNnBy0aD2Lf0h9xKiDmuCTqCOTndx4y6DHDb9i 5J5EHQovwLxiO4peujLCAk32LppVuHUuH8Wu7fIdp62khFmPXn7d2YCrLny+7txgdW Dfvzgr0maIQkw== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Mon, 26 Feb 2024 10:34:35 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id 9CB9613EE4F; Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 97F9D28031B; Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) From: Chris Packham To: ojeda@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, andy.shevchenko@gmail.com, geert@linux-m68k.org, pavel@ucw.cz, lee@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, Chris Packham Subject: [PATCH 1/3] auxdisplay: Add 7 segment LED display driver Date: Mon, 26 Feb 2024 10:34:21 +1300 Message-ID: <20240225213423.690561-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz> References: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65dbb26b a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=k7vzHIieQBIA:10 a=F0jKMMnsshfnaHI64i4A:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791908321225962956 X-GMAIL-MSGID: 1791908321225962956 Add a driver for a 7 segment LED display. At the moment only one character is supported but it should be possible to expand this to support more characters and/or 14 segment displays in the future. Signed-off-by: Chris Packham --- drivers/auxdisplay/Kconfig | 7 ++ drivers/auxdisplay/Makefile | 1 + drivers/auxdisplay/seg-led.c | 152 +++++++++++++++++++++++++++++++++++ 3 files changed, 160 insertions(+) create mode 100644 drivers/auxdisplay/seg-led.c diff --git a/drivers/auxdisplay/Kconfig b/drivers/auxdisplay/Kconfig index d944d5298eca..e826b5b15881 100644 --- a/drivers/auxdisplay/Kconfig +++ b/drivers/auxdisplay/Kconfig @@ -197,6 +197,13 @@ config ARM_CHARLCD line and the Linux version on the second line, but that's still useful. +config SEG_LED + bool "Generic 7 segment LED display" + select LINEDISP + help + This driver supports a generic 7 segment LED display made up + of GPIO pins connected to the individual segments. + menuconfig PARPORT_PANEL tristate "Parallel port LCD/Keypad Panel support" depends on PARPORT diff --git a/drivers/auxdisplay/Makefile b/drivers/auxdisplay/Makefile index 6968ed4d3f0a..808fdf156bd5 100644 --- a/drivers/auxdisplay/Makefile +++ b/drivers/auxdisplay/Makefile @@ -14,3 +14,4 @@ obj-$(CONFIG_HT16K33) += ht16k33.o obj-$(CONFIG_PARPORT_PANEL) += panel.o obj-$(CONFIG_LCD2S) += lcd2s.o obj-$(CONFIG_LINEDISP) += line-display.o +obj-$(CONFIG_SEG_LED) += seg-led.o diff --git a/drivers/auxdisplay/seg-led.c b/drivers/auxdisplay/seg-led.c new file mode 100644 index 000000000000..c0b302a09cbb --- /dev/null +++ b/drivers/auxdisplay/seg-led.c @@ -0,0 +1,152 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Driver for a 7 segment LED display + * + * The GPIOs are wired to the 7 segments in a clock wise fashion starting from + * the top. + * + * -a- + * | | + * f b + * | | + * -g- + * | | + * e c + * | | + * -d- + * + * The decimal point LED presnet on some devices is currently not + * supported. + * + * Copyright (C) Allied Telesis Labs + */ + +#include +#include +#include +#include +#include +#include + +#include "line-display.h" + +struct seg_led_priv { + struct gpio_descs *segment_gpios; + struct delayed_work work; + struct linedisp linedisp; + struct seg7_conversion_map seg7; + unsigned int map_size; + size_t num_char; + char curr[]; +}; + +static const SEG7_DEFAULT_MAP(initial_map_seg7); + +static ssize_t map_seg7_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct seg_led_priv *priv = dev_get_drvdata(dev); + + memcpy(buf, &priv->seg7, priv->map_size); + return priv->map_size; +} + +static ssize_t map_seg7_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t cnt) +{ + struct seg_led_priv *priv = dev_get_drvdata(dev); + + if (cnt != priv->map_size) + return -EINVAL; + + memcpy(&priv->seg7, buf, cnt); + return cnt; +} + +static DEVICE_ATTR_RW(map_seg7); + +static void seg_led_linedisp_update(struct linedisp *linedisp) +{ + struct seg_led_priv *priv = container_of(linedisp, struct seg_led_priv, linedisp); + + schedule_delayed_work(&priv->work, 0); +} + +static void seg_led_update(struct work_struct *work) +{ + struct seg_led_priv *priv = container_of(work, struct seg_led_priv, work.work); + DECLARE_BITMAP(values, 8); + + values[0] = map_to_seg7(&priv->seg7, priv->curr[0]); + + gpiod_set_array_value_cansleep(priv->segment_gpios->ndescs, priv->segment_gpios->desc, + priv->segment_gpios->info, values); +} + +static const struct of_device_id seg_led_of_match[] = { + { .compatible = "generic,gpio-7seg"}, + {} +}; +MODULE_DEVICE_TABLE(of, seg_led_of_match); + +static int seg_led_probe(struct platform_device *pdev) +{ + struct seg_led_priv *priv; + int err; + + priv = devm_kzalloc(&pdev->dev, struct_size(priv, curr, 1), GFP_KERNEL); + if (!priv) + return -ENOMEM; + priv->num_char = 1; + + platform_set_drvdata(pdev, priv); + + priv->segment_gpios = devm_gpiod_get_array(&pdev->dev, "segment", GPIOD_OUT_LOW); + if (IS_ERR(priv->segment_gpios)) + return PTR_ERR(priv->segment_gpios); + + priv->seg7 = initial_map_seg7; + priv->map_size = sizeof(priv->seg7); + + err = device_create_file(&pdev->dev, &dev_attr_map_seg7); + if (err) + return err; + + INIT_DELAYED_WORK(&priv->work, seg_led_update); + + err = linedisp_register(&priv->linedisp, &pdev->dev, 1, priv->curr, + seg_led_linedisp_update); + if (err) { + device_remove_file(&pdev->dev, &dev_attr_map_seg7); + return err; + } + + return 0; +} + +static int seg_led_remove(struct platform_device *pdev) +{ + struct seg_led_priv *priv = platform_get_drvdata(pdev); + + cancel_delayed_work_sync(&priv->work); + linedisp_unregister(&priv->linedisp); + device_remove_file(&pdev->dev, &dev_attr_map_seg7); + + return 0; +} + +static struct platform_driver seg_led_driver = { + .probe = seg_led_probe, + .remove = seg_led_remove, + .driver = { + .name = "seg-led", + .of_match_table = seg_led_of_match, + }, +}; + +module_platform_driver(seg_led_driver); + +MODULE_AUTHOR("Chris Packham "); +MODULE_DESCRIPTION("7 segment LED driver"); +MODULE_LICENSE("GPL"); + From patchwork Sun Feb 25 21:34:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 206123 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:a81b:b0:108:e6aa:91d0 with SMTP id bq27csp1750525dyb; 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Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1708896875; bh=4gqEtwn93Tho3LTT9o6arNrvbLMX9cEVnx0SJH0vyvo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CfAjxxKF/WKDYBR0a3zpbCxjXNNCzQCfi9GFC5uApYSnQlqw6QEB7+PtAvzGxhPzN CtIFVeZgUTaxaB+5h5b6wSX+mWzt+4XwUavrGFVzDvRfG1Kb0MQ3F6OI7Mqur2wAPG 4QulCGr3zYPA7lWDDy2mkKl7Hco07jGWU/qNP2GdwewuNBDGGZBuYfGsj0Q2iezazf IU8j+nNFnWTbOXNKuEB8F/YsbLYe46E1mgZ3AQ8LANR9FNhEQGU3CAXrZanjKQbRWv 9Un9Jbf7OlFhX/TAUHLcviVR0LeqdzpYBrqI8cJrQwgzvboPubSNABBnwuEupgUPjd P7IBgNBaEteiQ== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Mon, 26 Feb 2024 10:34:35 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id 9EB2E13EE85; Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 99FF628092F; Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) From: Chris Packham To: ojeda@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, andy.shevchenko@gmail.com, geert@linux-m68k.org, pavel@ucw.cz, lee@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, Chris Packham Subject: [PATCH 2/3] dt-bindings: auxdisplay: Add bindings for generic 7 segment LED Date: Mon, 26 Feb 2024 10:34:22 +1300 Message-ID: <20240225213423.690561-3-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz> References: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65dbb26b a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=k7vzHIieQBIA:10 a=gEfo2CItAAAA:8 a=wDxYY4ZP0rUsokw9mtgA:9 a=3ZKOabzyN94A:10 a=sptkURWiP4Gy88Gu7hUp:22 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791908307230833334 X-GMAIL-MSGID: 1791908307230833334 Add bindings for a generic 7 segment LED display using GPIOs. Signed-off-by: Chris Packham --- .../auxdisplay/generic,gpio-7seg.yaml | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 Documentation/devicetree/bindings/auxdisplay/generic,gpio-7seg.yaml diff --git a/Documentation/devicetree/bindings/auxdisplay/generic,gpio-7seg.yaml b/Documentation/devicetree/bindings/auxdisplay/generic,gpio-7seg.yaml new file mode 100644 index 000000000000..238da2ede740 --- /dev/null +++ b/Documentation/devicetree/bindings/auxdisplay/generic,gpio-7seg.yaml @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/auxdisplay/generic,gpio-7seg.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GPIO based LED segment display + +maintainers: + - Chris Packham + +properties: + compatible: + const: generic,gpio-7seg + + segment-gpios: + description: + An array of GPIOs one per segment. + minItems: 7 + +required: + - segment-gpios + +additionalProperties: false + +examples: + - | + + #include + + led-7seg { + compatible = "generic,gpio-7seg"; + segment-gpios = <&gpio 0 GPIO_ACTIVE_LOW + &gpio 1 GPIO_ACTIVE_LOW + &gpio 2 GPIO_ACTIVE_LOW + &gpio 3 GPIO_ACTIVE_LOW + &gpio 4 GPIO_ACTIVE_LOW + &gpio 5 GPIO_ACTIVE_LOW + &gpio 6 GPIO_ACTIVE_LOW>; + }; From patchwork Sun Feb 25 21:34:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 206122 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:7300:a81b:b0:108:e6aa:91d0 with SMTP id bq27csp1750522dyb; Sun, 25 Feb 2024 13:35:30 -0800 (PST) X-Forwarded-Encrypted: i=3; AJvYcCUD0tywIUjQ+exb6eCwmqjoRI4822UnCvf79reohnaTK6czhQDhyVF9LE4iGtnSUCNOUDQ+2AYPsMt2mREnYujdEUD9AA== X-Google-Smtp-Source: AGHT+IEgvhGb0qSX4yEKtMU8EoTM0R3OkdG2xfMeYlZNTjpAks2nc7UB6Zj0fJFU0Sf+VTBAv4QY X-Received: by 2002:a05:6e02:1521:b0:365:1a2f:8271 with SMTP id i1-20020a056e02152100b003651a2f8271mr8699328ilu.3.1708896929912; Sun, 25 Feb 2024 13:35:29 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1708896929; cv=pass; d=google.com; s=arc-20160816; b=BC1NKuJLXJDS32DgmtdFTLdxJxQ+gmJ87on9Pix5uISafNfs5XOhL4MTK6aA+alGaa FVBw1/bcaFtOKzC0L8oL9JjqgUHxW8qfekNwwLjXSYwzUUaRYMXWfLqssKVScvz6vlZ/ bZ8dOMe15Er9KWPZ3u7OKrAPXLTpWLgnrWeOGCdY+VNnO0QB/5yPqEwrro6NoPyp9teL MRNUclQExRBwnF+BHgjx+d4RN/3iJqJSFasSsnsjlJi9EpdfS/KzmHNZfWZDX/Jaxno6 KUbXpXZBv7O7VYjE6U/qm8yGwqSbmJvyx514sX1kZt0XPmtcvDDqjQ6PxjPexNiBPqOX 9U4g== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=mOUZ+TwkiAjRh9ZNzvyYfCdGmY+q2Lr2Qp5dtz9LG/w=; fh=pEzhTg0ac/4WJHIRlAVeJCsnBpFrwMBCjOZhAIgfYzs=; b=CNe0BJLnARX9uqNAgGLsOW8yG4giHRyi2Zfbd8Eo7uj5sHHpZ+pd4lCR4GLT1grZC3 EC1QtQUKLy181OqGzL3DZHcNmkjXWBozxvTNxPWfsWijlj4he9FFyJYMEsJbZ+qOZrb/ susJrOVnIJM+VyOlb9nMgABxpDBdKmfcwzQhCyKbJiEFxkN4ynZHiVFpwCTrEBXrfJkJ NAtXTMUsQ+8etZ7UPr2FtqG83iGvbwDULyEhiCF17k4e0YNXVBfTHSaSV++BCRPKd3Av GTjALaK3Vi2Tto7zXfkdWYE+GoMtin1M7au/lanUb92bsGM3uFPk0MralrqEDDeMXgDr LFIQ==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@alliedtelesis.co.nz header.s=mail181024 header.b=mm+T4MLb; arc=pass (i=1 spf=pass spfdomain=alliedtelesis.co.nz dkim=pass dkdomain=alliedtelesis.co.nz dmarc=pass fromdomain=alliedtelesis.co.nz); spf=pass (google.com: domain of linux-kernel+bounces-80308-ouuuleilei=gmail.com@vger.kernel.org designates 2604:1380:40f1:3f00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-80308-ouuuleilei=gmail.com@vger.kernel.org"; dmarc=pass (p=QUARANTINE sp=REJECT dis=NONE) header.from=alliedtelesis.co.nz Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. 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Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1708896875; bh=mOUZ+TwkiAjRh9ZNzvyYfCdGmY+q2Lr2Qp5dtz9LG/w=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mm+T4MLbSCX7nTfRotXb1RXaplysCTOGH3rL1HjPxD2PGcZ6/hE0horowEWSgXa7a wu5JPrKxRnSUhXY93xTmAyCdqu7yFtTKNzIGBkAm1YLENk7GPuTAtcOsjpTzqJpLyK ljr84ELkDdTYImvtfKb4jkkTETWlc4WVZWit2/SMr3GSinY69zbnsnMfn6d5oxu78M gC7qMI+ex5pZ4hO3803hTUeARaXyMRYXFwcXjaXuwbw2UhYlwaqO0IbP08PvJYD/V8 FiHOaIPHQHg9nTTAI2//EE+6bOEumuy/TsCM8xh5vGByCgqQxkR0aLKSTsZq54eVQK Q2EgyJj0jL9YA== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8,2,6,11305) id ; Mon, 26 Feb 2024 10:34:35 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id A29B413EE8E; Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 9FFD3280808; Mon, 26 Feb 2024 10:34:35 +1300 (NZDT) From: Chris Packham To: ojeda@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, andy.shevchenko@gmail.com, geert@linux-m68k.org, pavel@ucw.cz, lee@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, Chris Packham Subject: [PATCH 3/3] ARM: dts: marvell: Add 7 segment LED display on x530 Date: Mon, 26 Feb 2024 10:34:23 +1300 Message-ID: <20240225213423.690561-4-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz> References: <20240225213423.690561-1-chris.packham@alliedtelesis.co.nz> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SEG-SpamProfiler-Analysis: v=2.4 cv=BKkQr0QG c=1 sm=1 tr=0 ts=65dbb26b a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=k7vzHIieQBIA:10 a=75wrGpN2Od3tzqupbDsA:9 a=3ZKOabzyN94A:10 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1791908307137880744 X-GMAIL-MSGID: 1791908307137880744 The Allied Telesis x530 products have a 7 segment LED display which is used for node identification when the devices are stacked. Represent this as a gpio-7seg device. Signed-off-by: Chris Packham --- arch/arm/boot/dts/marvell/armada-385-atl-x530.dts | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts index 5a9ab8410b7b..088b77987081 100644 --- a/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts +++ b/arch/arm/boot/dts/marvell/armada-385-atl-x530.dts @@ -43,6 +43,17 @@ uart0: serial@12000 { }; }; }; + + led-7seg { + compatible = "generic,gpio-7seg"; + segment-gpios = <&led_7seg_gpio 0 GPIO_ACTIVE_LOW + &led_7seg_gpio 1 GPIO_ACTIVE_LOW + &led_7seg_gpio 2 GPIO_ACTIVE_LOW + &led_7seg_gpio 3 GPIO_ACTIVE_LOW + &led_7seg_gpio 4 GPIO_ACTIVE_LOW + &led_7seg_gpio 5 GPIO_ACTIVE_LOW + &led_7seg_gpio 6 GPIO_ACTIVE_LOW>; + }; }; &pciec { @@ -149,7 +160,7 @@ i2c@3 { #size-cells = <0>; reg = <3>; - gpio@20 { + led_7seg_gpio: gpio@20 { compatible = "nxp,pca9554"; gpio-controller; #gpio-cells = <2>;