From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E354D36C0A7 for ; Mon, 12 Jan 2026 14:22:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768227730; cv=none; b=Ka6A9Un0WxvsnstzzaVce3iPayssyqrK/jO8HCMWXKy/ZA3ayyGKHoI5lX2OWhCep7nXtpHsYR0HFYGqLe6XobLcIe571UK/xVPynvyN1Um4t6EYtQTrWWYrqaHIfHJ14rqgHtgMHELKes3cTjcw97GYestkrcX3dcacsYHd21Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768227730; c=relaxed/simple; bh=BodRR0JLTYY6t0tgi82Yb1qLdxJmPnMZpxveitB/wWo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IGPppMpnZNtjDc4DrUwadaraaN3FG/Ws4CnCF5LFHk5eIm9iLaxCcfasDvz528fltW7dsk3V1Yg1jUE1bfq06K982nVxZoBoWb06yMK0w22VUFx2h2Ivni0DIfwDV3A2L0FZs814+B8vhXZO9tJ1pCyhQTYTBjfuQjdDmncgjIY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=emZPgjgX; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="emZPgjgX" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id A34AD1A2814; Mon, 12 Jan 2026 14:22:07 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7958D606FA; Mon, 12 Jan 2026 14:22:07 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 38DA6103C9262; Mon, 12 Jan 2026 15:22:05 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1768227726; h=from:subject:date:message-id:to:cc:mime-version: content-transfer-encoding:in-reply-to:references; bh=+tpUvICqLTg4ne1424M0U3kZMx9D8QPY+u/h0GqVlU0=; b=emZPgjgXIGvyoBOtXljJb9rbpywSIyF5CBmOwMyrpFxyR2gkcRfzhr9USMNIaYHrH8jwJU aJbze09cRUZe1z1O/j23V6/yvkAfHzxv78HRffOrFkyIMQBHFMA676Ja//EdPd6+AT5+Wu 6QwGj6eOGU+rqiaE47UzdpL+ROalzzo1UqgJdZYP4ljp9mxInlf50jga6x+rCknzAQ5SJH +2tp4i3zkqza4ScZGJfT31Q0hNE72D89N5prCjZsBOjfHmI+du6pNPbH+2auJCR57tdjTP M15imWX7dTlgQJuR9qqjVCUi8UkL2e1bLvGhEcx2zsdcd3WCXFy3zlL+4yS61g== From: Herve Codina To: David Gibson , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Ayush Singh , Geert Uytterhoeven , devicetree-compiler@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree-spec@vger.kernel.org, Hui Pu , Ian Ray , Luca Ceresoli , Thomas Petazzoni , Herve Codina Subject: [RFC PATCH 69/77] libfdt: Introduce fdt_getprop_offset() Date: Mon, 12 Jan 2026 15:19:59 +0100 Message-ID: <20260112142009.1006236-70-herve.codina@bootlin.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260112142009.1006236-1-herve.codina@bootlin.com> References: <20260112142009.1006236-1-herve.codina@bootlin.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 The future support for applying a addon on a base device-tree needs to get an offset to a property based on the node offset and the property name. Several function exists to get a property but none of them allows to get the property offset. Fill the lack and introduce fdt_getprop_offset() Signed-off-by: Herve Codina --- libfdt/fdt_ro.c | 12 ++++++++++++ libfdt/libfdt_internal.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/libfdt/fdt_ro.c b/libfdt/fdt_ro.c index 63494fb..29692f9 100644 --- a/libfdt/fdt_ro.c +++ b/libfdt/fdt_ro.c @@ -508,6 +508,18 @@ const void *fdt_getprop(const void *fdt, int nodeoffset, return fdt_getprop_namelen(fdt, nodeoffset, name, strlen(name), lenp); } +int fdt_getprop_offset(const void *fdt, int nodeoffset, const char *name) +{ + const struct fdt_property *prop; + int lenp, offset; + + prop = fdt_get_property_namelen_(fdt, nodeoffset, name, strlen(name), + &lenp, &offset); + if (!prop) + return lenp; + return offset; +} + uint32_t fdt_get_phandle(const void *fdt, int nodeoffset) { const fdt32_t *php; diff --git a/libfdt/libfdt_internal.h b/libfdt/libfdt_internal.h index d80d218..499e821 100644 --- a/libfdt/libfdt_internal.h +++ b/libfdt/libfdt_internal.h @@ -24,6 +24,8 @@ int32_t fdt_ro_probe_(const void *fdt); int fdt_check_node_offset_(const void *fdt, int offset); int fdt_check_prop_offset_(const void *fdt, int offset); +int fdt_getprop_offset(const void *fdt, int nodeoffset, const char *name); + const char *fdt_find_string_len_(const char *strtab, int tabsize, const char *s, int s_len); static inline const char *fdt_find_string_(const char *strtab, int tabsize, -- 2.52.0