From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B813E606A33A for ; Fri, 6 Nov 2026 07:09:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=NzE9+w9E; dkim=fail reason="signature verification failed" (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=EmTgMEiC 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:Reply-To:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:Message-Id:MIME-Version :Subject:Date:From:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Unsubscribe-Post:List-Owner; bh=cnSZAzPiDY8jER00F/xxiC7d/UtL5gS5E/Bq/oReKQ8=; b=NzE9+w9EeKNy3/vQyYPq6nb2xA 9PViUrEtrzDDuTjp/GnEeivFlo+xQ8YeZVDTKTlLZ31s7/U9CFgSlwooaHy9NrWLzKtSLK5h+mTfI t9ZtuToVTiIF37BntnMUM5e4HLdjQSSh5ogg0R/dMi5s9SbByMtKh3duRe5SBXiSyufSLZ0NylR96 j54gGXFLh/SSWioysvt0zaWZEHHOM0E2u+R/P3mkiX1mYjnzZsjCdfz1cQDE8iaf7cR4KkpC8r1Nd xZO4sIcNjDCDLNFzE8pY3tgN3mHduM8abBZgyydP+/FL0Ndh5/dr84nPLniGSw/XGckw0Dwexy48T Ttqwt7KA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPE4L-0000000BOtN-0XF5; Fri, 06 Nov 2026 07:09:01 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xPE4K-0000000BOtE-031C; Fri, 06 Nov 2026 07:09:00 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id C0E3343CAA; Fri, 6 Nov 2026 07:08:59 +0000 (UTC) Authentication-Results: smtp.kernel.org; arc=none smtp.remote-ip=100.80.115.77 ARC-Seal: i=1; d=kernel.org; s=arc20260519; a=rsa-sha256; cv=none; t=1793948939; b=zbWAaEPUHHoS10iRxwlAfYnVZEY400FBLMBedLqwiiRsCl6M9CAuRCrdrbTZWyh/Lp7z xlKb/ydJTbl66WnQBGecGc7EgCknhldhy78MqS2/1jz3XerfE7nNzek6ZQJEKf9LyRCGk MYVZLyRxqI3L6ZBd9xeQJEnpa1weJqtiMrb8zEa7846I31LOdanAct/FjAAHRy/5tkXyq SfsfK2XrZ52dKarefSaJ04019h9SEKwMpBQQrLQXVKz+cI2S2j5YR1yiyH3N8HUE5cbnM f0vSQsMCneD0qAj1JEhTTg9KJtPete8ccWB8ylLBHai8h9MK8OMKolJihRSy5OOScdg== ARC-Message-Signature: i=1; d=kernel.org; s=arc20260519; a=rsa-sha256; c=relaxed/relaxed; t=1793948939; h=DKIM-Signature:Received:From:Date:Subject:MIME-Version:Content-Type: Message-Id:X-B4-Tracking:X-Change-ID:To:Cc:X-Mailer: X-Developer-Signature:X-Developer-Key:X-Endpoint-Received: X-Original-From:Reply-To:Content-Transfer-Encoding; bh=sssGzgp6hfraRTjPaOuoMz/ydvUjxyv6U8CNhrczgQc=; b=U/JE4jcRGwUJ0lMX4i4CgZJg50O11vt6uHoQD6T8gO2348U8Snd/qUfglIZJVHtlGxMF BWgAeY82qEbJkEuDKm3Y0kms+JItm4icEFrZMMjblaQ/IV8N2GYjySaNcy+CvU5niMX+L 8756IRzIdSrwQuEiwYKK99F8d+2X5Z6phBOsAACqGiXsgKsadx3UxN//jVz43oJH0rbMh eulOlubwgUGtTBsdFd1F8WFh9EpLU4z0sFBb3trRwTzTknaFSV9jCLRacVSeaP9gzvYCb 57rZ/POhU2V6jrXMFRhbJ1F9zsGg4kQuXm9j/8jvqxFHng9Eesfi6Eplm4tC3d3MchQ== ARC-Authentication-Results: i=1; smtp.kernel.org; arc=none smtp.remote-ip=100.80.115.77 Received: from lkml.kernel.org (nexus.subspace.kernel.org [100.80.115.77]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.kernel.org (Postfix) with ESMTPS id F2A7F1F0089F; Fri, 6 Nov 2026 07:08:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793948939; bh=sssGzgp6hfraRTjPaOuoMz/ydvUjxyv6U8CNhrczgQc=; h=From:Date:Subject:To:Cc:Reply-To; b=EmTgMEiCAR2x4GSZadNau2v3DnOTeD3OA/JvNiQgw96aHXlTPIeALuWaCT/br2GZq UQGflvH6Eo8o7j80G+MQcL8d50PhMKkRIu3PG7BZXLyczM40yXjATzdzlhK2pME5tg t/m5yzUi+W/1t72VorLv4DTz2ZY3V4GkNOsJ3drzzhMrIVuaSBwrFdMgxslUqvEjcq e1S5inj3LqrYrs4huiA1fGQnaYwsgHJDkL6mPuS4hEro3uTPnwO7p9ZfPV2pxOoEVz 21w/zD5QuoWUdFYM7un2YwSocNlcAvsL35wTMKyrfNfjlTFCD5txca8exvkDRxompa I+fi/r3B1x2fw== Received: from nexus.subspace.kernel.org (localhost [IPv6:::1]) by lkml.kernel.org (Postfix) with ESMTP id 4BF9C45C1E; Fri, 6 Nov 2026 07:08:58 +0000 (UTC) From: Xianwei Zhao via B4 Relay Date: Fri, 06 Nov 2026 07:08:46 +0000 Subject: [PATCH] pinctrl: amlogic: a4: Allow functions without groups X-Archived-By: MIME-Version: 1.0 Message-Id: <20261106-debug-info-v1-1-067c5c554f91@amlogic.com> X-B4-Tracking: v=1; b=H4sIAP187WoC/x2MQQqAIBAAvyJ7bkGNFPpKdMhcbS8aShGEf086z sDMC5UKU4VZvFDo5so5dVCDgP3YUiRk3xm01EYpadCTuyJyChmdm7qj0VhloQdnocDPP1vW1j7 7Vr3yXAAAAA== X-Change-ID: 20261106-debug-info-bb5611e36717 To: Linus Walleij , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Cc: linux-amlogic@lists.infradead.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Xianwei Zhao X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1793948933; l=2986; i=xianwei.zhao@amlogic.com; s=20251216; h=from:subject:message-id; bh=38GizBhLDTW4i/GAT4DbimPes3s2Ei64bmXiM44p6dM=; b=Zp2hrVUInW3tmySD+qP23c2GiuMu7cuWGPE7KpTaGQtXN3rnWgNGaDXPPlqLObAPZOi7+XzRa Me9xUYBVdZ5BwnG79tTvNzKV6JE2Az0cijnFmwxSoHYLJFkY+nj7+s7 X-Developer-Key: i=xianwei.zhao@amlogic.com; a=ed25519; pk=dWwxtWCxC6FHRurOmxEtr34SuBYU+WJowV/ZmRJ7H+k= X-Endpoint-Received: by B4 Relay for xianwei.zhao@amlogic.com/20251216 with auth_id=578 X-Original-From: Xianwei Zhao X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: xianwei.zhao@amlogic.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" X-Spam-Status: No, score=-16.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_EF,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 From: Xianwei Zhao Allow function nodes without child groups during device tree parsing instead of returning an error. Only count and parse nodes with the "func-" prefix as pinctrl functions, ignoring other non-GPIO child nodes. Also handle zero-sized allocations when no groups are defined by checking for ZERO_SIZE_PTR in addition to NULL. This allows the driver to support function nodes without groups and avoid treating unrelated device tree nodes as pinctrl functions. Signed-off-by: Xianwei Zhao --- Add debugging information for error dts and Error pinctrl config not affect normal pin work. --- drivers/pinctrl/meson/pinctrl-amlogic-a4.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/pinctrl/meson/pinctrl-amlogic-a4.c b/drivers/pinctrl/meson/pinctrl-amlogic-a4.c index 39eb8cc7fc0d..d0e3cec3ead0 100644 --- a/drivers/pinctrl/meson/pinctrl-amlogic-a4.c +++ b/drivers/pinctrl/meson/pinctrl-amlogic-a4.c @@ -821,8 +821,10 @@ static int aml_pctl_parse_functions(struct device_node *np, func = &info->functions[index]; func->name = np->name; func->ngroups = of_get_child_count(np); - if (func->ngroups == 0) - return dev_err_probe(dev, -EINVAL, "No groups defined\n"); + if (func->ngroups == 0) { + dev_dbg(dev, "func %s No groups defined\n", func->name); + return 0; + } func->groups = devm_kcalloc(dev, func->ngroups, sizeof(*func->groups), GFP_KERNEL); if (!func->groups) @@ -899,8 +901,12 @@ static void aml_pctl_dt_child_count(struct aml_pinctrl *info, if (of_property_read_bool(child, "gpio-controller")) { info->nbanks++; } else { - info->nfunctions++; - info->ngroups += of_get_child_count(child); + if (!strncmp(child->name, "func-", 5)) { + info->nfunctions++; + info->ngroups += of_get_child_count(child); + } else { + dev_dbg(info->dev, "func node defined err %s\n", child->name); + } } } } @@ -1128,7 +1134,8 @@ static int aml_pctl_probe_dt(struct platform_device *pdev, info->banks = devm_kcalloc(dev, info->nbanks, sizeof(*info->banks), GFP_KERNEL); - if (!info->functions || !info->groups || !info->banks) + if (IS_ERR_OR_NULL(info->functions) || IS_ERR_OR_NULL(info->groups) || + IS_ERR_OR_NULL(info->banks)) return -ENOMEM; info->data = (struct aml_pctl_data *)of_device_get_match_data(dev); @@ -1166,10 +1173,11 @@ static int aml_pctl_probe_dt(struct platform_device *pdev, } bank++; } else { - ret = aml_pctl_parse_functions(child, info, - i++, &grp_index); - if (ret) - return ret; + if (!strncmp(child->name, "func-", 5)) { + ret = aml_pctl_parse_functions(child, info, i++, &grp_index); + if (ret) + return ret; + } } } --- base-commit: 89edcad9f23925f5706b7555b02165d1990444d5 change-id: 20261106-debug-info-bb5611e36717 Best regards, -- Xianwei Zhao _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic