From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [80.241.56.171]) (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 5C5CB45517D; Thu, 3 Sep 2026 20:52:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.171 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788468751; cv=none; b=BGlANy6uDaR6Y+/UOB8x1XpRDB0Q7arbFh8S+FbTJTfq/BAHlHZCQpUK80G9kE2W2XwzxJis7Dppb6GCUcpatohEueiSAb0IKN26XjxkZdya/Q504IMUJArY3DtJbAHPLfpBnI740ewNktquSO/RF0k8yfNx7epmAYaWPlnyrwI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788468751; c=relaxed/simple; bh=vwOuSLvL63dOCq8FTIf3VO6iJabE/FIYcZsUkmdtKxI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=WGtTqMJ6sSQJ4qY1c0RwQ4x8icWR8o/pVgsmOjdD95KXGR6kG9FuVpze7nsuOwHv6xqqAlhuEsB1AWlgH/o2N7IP09JogcfTCQUNfJH67+WNpiXZ5EwyWorTXzf245SdjPWCb+q6dX4hLcQ1tfTy593ZDfZc1ITfITeSpc/rarg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org; spf=pass smtp.mailfrom=mailbox.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=JZdjWe2M; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=d+/sEAiu; arc=none smtp.client-ip=80.241.56.171 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mailbox.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="JZdjWe2M"; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="d+/sEAiu" Received: from smtp2.mailbox.org (smtp2.mailbox.org [IPv6:2001:67c:2050:b231:465::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 4hbWxj26cvzMlD5; Thu, 03 Sep 2026 22:52:25 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1788468745; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9Fm+D0OcbzOy0IbyGDj4z1hQFOVoL/qLeotXIAAn7YE=; b=JZdjWe2M5FbbM5MlUrt17dhLmO6geib8e46t17nk6xr0lXW4UHNeoZkfi3y4gDjWGMFgit 2WJ9UJr312NXLeqdJgXnTmd16PKq/GJwReC7/YTJgQuiYT8egz/NvhYzs8be5IccyQA9nq RFV1jSu4+hWpb+cYiUC+bj+FiVRbsBpgVu/ADSS1YW7gTCSrSuLbeNIoSdvlqNrDXwAAxQ LnXt6/2SLn84Sdc5hXd7p19IXm2rnUTGzJ/n7NZi01Az5KKqNqUxrXH+ZblhyRJZ6DHOhB 7jLlwIzkKnK/5DqXRE1dHDDHrxhj3Ai5+ahYjDDKjqL8YGOWLIt1Z+veSGIPMg== Authentication-Results: outgoing_mbo_mout; dkim=pass header.d=mailbox.org header.s=mail20150812 header.b="d+/sEAiu"; spf=pass (outgoing_mbo_mout: domain of marek.vasut+renesas@mailbox.org designates 2001:67c:2050:b231:465::2 as permitted sender) smtp.mailfrom=marek.vasut+renesas@mailbox.org From: Marek Vasut DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1788468743; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=9Fm+D0OcbzOy0IbyGDj4z1hQFOVoL/qLeotXIAAn7YE=; b=d+/sEAiuveGD0FlmPArvdb/zQWZhdUOz2dVfFdsgGYnfGf+rhQWdO1282YrWbXV+WMJ5dA tm2DtbF6skRyqMvYdScgcKeVNlVHGxbytH7QCdUyyQclWOzhN99E5TQ13HmHHIPxq9o9iX uwqPs4894yHNY5k9IbEk14hJqncZfsFKGY7srZAVY9b89bn/+QCH/lpAa0kUFeeCBXJwpM 2ckyu/yevsFWteyB7SKX82Jsd9VBXloXxgHU8S84Co4XU2FADWmnMgYc5TVl4dLIFP1hVl J4AmRRHvpg6mKpPhKPgzu1gnRuWSgnfTWP+dvX73uAeGBIapX+gp/tI/2Y7pDQ== To: linux-pci@vger.kernel.org Cc: Marek Vasut , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Bjorn Helgaas , Conor Dooley , Geert Uytterhoeven , Koichiro Den , Krzysztof Kozlowski , Lorenzo Pieralisi , Magnus Damm , Manivannan Sadhasivam , Rob Herring , Yoshihiro Shimoda , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH 2/6] dt-bindings: PCI: rcar-gen4-pci-ep: Document Application/Local register reset Date: Thu, 3 Sep 2026 22:50:53 +0200 Message-ID: <20260903205153.283553-2-marek.vasut+renesas@mailbox.org> In-Reply-To: <20260903205153.283553-1-marek.vasut+renesas@mailbox.org> References: <20260903205153.283553-1-marek.vasut+renesas@mailbox.org> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-MBO-RS-META: y8fjg86s9e6n6d6gbtcpeesq5ddkmz5g X-MBO-RS-ID: 32e90b4b9a684e07b26 X-Rspamd-Queue-Id: 4hbWxj26cvzMlD5 The R-Car Gen4 PCIe controller does contain core reset, which puts the controller back into well defined state, but it does also tear down the PCIe link. This is called Application/Local register reset in the documentation. Document this reset. Signed-off-by: Marek Vasut --- Cc: "Krzysztof Wilczyński" Cc: Bjorn Helgaas Cc: Conor Dooley Cc: Geert Uytterhoeven Cc: Koichiro Den Cc: Krzysztof Kozlowski Cc: Lorenzo Pieralisi Cc: Magnus Damm Cc: Manivannan Sadhasivam Cc: Rob Herring Cc: Yoshihiro Shimoda Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org --- .../devicetree/bindings/pci/rcar-gen4-pci-ep.yaml | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml index b23293314a6d0..a983aa015cd1b 100644 --- a/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml +++ b/Documentation/devicetree/bindings/pci/rcar-gen4-pci-ep.yaml @@ -56,11 +56,15 @@ properties: maxItems: 1 resets: - maxItems: 1 + minItems: 1 + maxItems: 2 reset-names: + minItems: 1 + maxItems: 2 items: - const: pwr + - const: core max-link-speed: maximum: 4 @@ -109,8 +113,8 @@ examples: clocks = <&cpg CPG_MOD 624>, <&pcie0_clkref>; clock-names = "core", "ref"; power-domains = <&sysc R8A779F0_PD_ALWAYS_ON>; - resets = <&cpg 624>; - reset-names = "pwr"; + resets = <&cpg 624>,<&cpg 1121>; + reset-names = "pwr", "core"; max-link-speed = <4>; num-lanes = <2>; max-functions = /bits/ 8 <2>; -- 2.53.0