From patchwork Wed Jan 5 15:02:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Pali_Roh=C3=A1r?= X-Patchwork-Id: 12704443 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com 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 059CBC433EF for ; Wed, 5 Jan 2022 15:03:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241202AbiAEPC5 (ORCPT ); Wed, 5 Jan 2022 10:02:57 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:46450 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241196AbiAEPCz (ORCPT ); Wed, 5 Jan 2022 10:02:55 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 00B9661795; Wed, 5 Jan 2022 15:02:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19473C36AE9; Wed, 5 Jan 2022 15:02:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1641394974; bh=xtgWnMzNPIMa08zjjeeaZB3knTJH44avqoA9ZVBaK7A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mQrIjJWQ6mQm4ZDwpbDcxjHgg78Lesw66c4c6xoPrjFLoqfregIO6sA0pto1QGHqM wMJzN6x9L4nz/Dry+dAIW76lFI+SOxpFLBx08veMYlK2aHpf+wMr4q9F5fuPLZalji nq0/gkiORhGHDQLcZ6cKxWJvRG6WKgwi0EzBaeX/e+qfJfnJDbFegyHXIvj0NmHiE6 RfgSHmNlo4asnKFb3xqtTiqmg+nOaUJJpW7a3svzbhkpOsT1WcPEUFJ7MjuFTOWJKg sz4HVKfyefnBH9QX/H1Gk9CbWKuCfN5NdzUNDLN2EPYWqBFNUGzz3Zo83VLHWhd/Pm yb+HcFMryPkAg== Received: by pali.im (Postfix) id C5D7682A; Wed, 5 Jan 2022 16:02:53 +0100 (CET) From: =?utf-8?q?Pali_Roh=C3=A1r?= To: Lorenzo Pieralisi , Bjorn Helgaas , Rob Herring , Thomas Petazzoni , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , =?utf-8?q?Marek_Beh=C3=BAn?= , Russell King , Andrew Lunn , Gregory Clement Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH 04/11] dt-bindings: PCI: mvebu: Add num-lanes property Date: Wed, 5 Jan 2022 16:02:32 +0100 Message-Id: <20220105150239.9628-5-pali@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220105150239.9628-1-pali@kernel.org> References: <20220105150239.9628-1-pali@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Controller driver needs to correctly configure PCIe link if it contains 1 or 4 SerDes PCIe lanes. Therefore add a new 'num-lanes' DT property for mvebu PCIe controller. Property 'num-lanes' seems to be de-facto standard way how number of lanes is specified in other PCIe controllers. Signed-off-by: Pali Rohár Acked-by: Rob Herring --- Documentation/devicetree/bindings/pci/mvebu-pci.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/mvebu-pci.txt b/Documentation/devicetree/bindings/pci/mvebu-pci.txt index 6173af6885f8..24225852bce0 100644 --- a/Documentation/devicetree/bindings/pci/mvebu-pci.txt +++ b/Documentation/devicetree/bindings/pci/mvebu-pci.txt @@ -77,6 +77,7 @@ and the following optional properties: - marvell,pcie-lane: the physical PCIe lane number, for ports having multiple lanes. If this property is not found, we assume that the value is 0. +- num-lanes: number of SerDes PCIe lanes for this link (1 or 4) - reset-gpios: optional GPIO to PERST# - reset-delay-us: delay in us to wait after reset de-assertion, if not specified will default to 100ms, as required by the PCIe specification. @@ -141,6 +142,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 58>; marvell,pcie-port = <0>; marvell,pcie-lane = <0>; + num-lanes = <1>; /* low-active PERST# reset on GPIO 25 */ reset-gpios = <&gpio0 25 1>; /* wait 20ms for device settle after reset deassertion */ @@ -161,6 +163,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 59>; marvell,pcie-port = <0>; marvell,pcie-lane = <1>; + num-lanes = <1>; clocks = <&gateclk 6>; }; @@ -177,6 +180,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 60>; marvell,pcie-port = <0>; marvell,pcie-lane = <2>; + num-lanes = <1>; clocks = <&gateclk 7>; }; @@ -193,6 +197,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 61>; marvell,pcie-port = <0>; marvell,pcie-lane = <3>; + num-lanes = <1>; clocks = <&gateclk 8>; }; @@ -209,6 +214,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 62>; marvell,pcie-port = <1>; marvell,pcie-lane = <0>; + num-lanes = <1>; clocks = <&gateclk 9>; }; @@ -225,6 +231,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 63>; marvell,pcie-port = <1>; marvell,pcie-lane = <1>; + num-lanes = <1>; clocks = <&gateclk 10>; }; @@ -241,6 +248,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 64>; marvell,pcie-port = <1>; marvell,pcie-lane = <2>; + num-lanes = <1>; clocks = <&gateclk 11>; }; @@ -257,6 +265,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 65>; marvell,pcie-port = <1>; marvell,pcie-lane = <3>; + num-lanes = <1>; clocks = <&gateclk 12>; }; @@ -273,6 +282,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 99>; marvell,pcie-port = <2>; marvell,pcie-lane = <0>; + num-lanes = <1>; clocks = <&gateclk 26>; }; @@ -289,6 +299,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 103>; marvell,pcie-port = <3>; marvell,pcie-lane = <0>; + num-lanes = <1>; clocks = <&gateclk 27>; }; };