From patchwork Tue Aug 30 07:45:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hongxing Zhu X-Patchwork-Id: 12958904 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ECF43C0502A for ; Tue, 30 Aug 2022 08:08:30 +0000 (UTC) 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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=NgQGHdckZS3Gp0wuDUu3w0RKjLwXxYosbbgUIgwnLUo=; b=3QW8GFpNcA8DCP vjXXYfDZaWlIZaUPEANwe7hD4XtzJSEX07zs5rOtIoU/aKc1YKKHrhEkugLvJ+48vq9MVDLfdmVvf FvxBYhbo9gD6iU3Y1qfgjPF0XNlhd2cVvCnHKlt3KYrvx6YHOBQ/MjfUwsj9rneb5j5kJPkF8JuHn 3QHDuDYFjGARqDSw2jAjcSEyNEuW8NxqidnQKzA99sRQXdET35/dZPMgj3pnYi+5glmxfaScLU/Bq +Cf7RYFD/iCsFvDkvVCorkgwM/cFC7MaMRxhZaLGgzdGOjMQo5Szbjcq8j2vu3mPlwh03lfKdiLbC 1TqCJtmG1P8i/U4R09+Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSwIQ-00F3Ve-1I; Tue, 30 Aug 2022 08:08:30 +0000 Received: from inva021.nxp.com ([92.121.34.21]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oSwDs-00F1ZY-5p; Tue, 30 Aug 2022 08:03:50 +0000 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 72E91203755; Tue, 30 Aug 2022 10:03:44 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 3AE8B203D96; Tue, 30 Aug 2022 10:03:44 +0200 (CEST) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id 439211820F5A; Tue, 30 Aug 2022 16:03:42 +0800 (+08) From: Richard Zhu To: p.zabel@pengutronix.de, l.stach@pengutronix.de, bhelgaas@google.com, lorenzo.pieralisi@arm.com, robh@kernel.org, shawnguo@kernel.org, vkoul@kernel.org, alexander.stein@ew.tq-group.com, marex@denx.de, richard.leitner@linux.dev Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, linux-imx@nxp.com, Richard Zhu Subject: [PATCH v5 1/7] dt-binding: phy: Add iMX8MP PCIe PHY binding Date: Tue, 30 Aug 2022 15:45:58 +0800 Message-Id: <1661845564-11373-2-git-send-email-hongxing.zhu@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1661845564-11373-1-git-send-email-hongxing.zhu@nxp.com> References: <1661845564-11373-1-git-send-email-hongxing.zhu@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220830_010348_456951_60EA0D8F X-CRM114-Status: UNSURE ( 7.60 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org Add i.MX8MP PCIe PHY binding. On iMX8MM, the initialized default value of PERST bit(BIT3) of SRC_PCIEPHY_RCR is 1b'1. But i.MX8MP has one inversed default value 1b'0 of PERST bit. And the PERST bit should be kept 1b'1 after power and clocks are stable. So add one more PERST explicitly for i.MX8MP PCIe PHY. Signed-off-by: Richard Zhu Tested-by: Marek Vasut Tested-by: Richard Leitner Tested-by: Alexander Stein --- .../bindings/phy/fsl,imx8-pcie-phy.yaml | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml index b6421eedece3..692783c7fd69 100644 --- a/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml +++ b/Documentation/devicetree/bindings/phy/fsl,imx8-pcie-phy.yaml @@ -16,6 +16,7 @@ properties: compatible: enum: - fsl,imx8mm-pcie-phy + - fsl,imx8mp-pcie-phy reg: maxItems: 1 @@ -28,11 +29,16 @@ properties: - const: ref resets: - maxItems: 1 + minItems: 1 + maxItems: 2 reset-names: - items: - - const: pciephy + oneOf: + - items: # for iMX8MM + - const: pciephy + - items: # for IMX8MP + - const: pciephy + - const: perst fsl,refclk-pad-mode: description: | @@ -60,6 +66,10 @@ properties: description: A boolean property indicating the CLKREQ# signal is not supported in the board design (optional) + power-domains: + description: PCIe PHY power domain (optional). + maxItems: 1 + required: - "#phy-cells" - compatible