From mboxrd@z Thu Jan 1 00:00:00 1970 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 32422C52D7C for ; Tue, 13 Aug 2024 02:52:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=uuCHQ6dD39y247gfbV6xTF9L0a98i010s7PSy/g9X/0=; b=qbxLrkPxgmOhNzdklF8Ume6GFU 9xuQU9nSTpGeNxQBKwiyONsu8fn8a0PJGwmvXee8IcAFDzaJ6l+SToH4rnhocc+S0S830ThYz3MKw JmsyrAeIgsIscFHChJWqcWe1vNMFqB859FHQWNXW0tqt69l1gmEXbs7C5Rvs8xjQF+k8N1gJeAf7K I5wArQhYsYC/gnrQc67in78kIH8MPCjbFxBFifgcRuoCQv4uC//Mw5WcQrSr62GisNo6c5u1mQlVQ pJfus0rb5DkioajRpGG8ODuEz68vTlwoB7Q9Bs+5LSlp3Wh901lq1ft801Ywf4A+2HwcbGCmQtaiM Ii2KHl9g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sdhdo-000000028gK-02bj; Tue, 13 Aug 2024 02:52:08 +0000 Received: from mail-m16.yeah.net ([1.95.21.15]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sdhcY-000000028Oh-3Jq2 for linux-arm-kernel@lists.infradead.org; Tue, 13 Aug 2024 02:50:56 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yeah.net; s=s110527; h=Date:From:Subject:Message-ID:MIME-Version: Content-Type; bh=uuCHQ6dD39y247gfbV6xTF9L0a98i010s7PSy/g9X/0=; b=Dt3XS+W9C2f6Bo60qLMlch09JlDKo+7uTi2nViU23WKzVcXiDWJivPc3CoMn0N upz1CYnuE15F6MwYT6CPWb10Y8l6O7nFBrAcofAb8FrGfX90ZbIYuqzB+Oh/E0xM AuLWugfw7vhlVKv1/MhxouW2wW74/8or0ECxue0QP4Qxw= Received: from dragon (unknown [117.62.10.86]) by gzsmtp1 (Coremail) with SMTP id Mc8vCgBnryz2ybpmE0pSAg--.46098S3; Tue, 13 Aug 2024 10:50:32 +0800 (CST) Date: Tue, 13 Aug 2024 10:50:30 +0800 From: Shawn Guo To: Richard Zhu Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, shawnguo@kernel.org, l.stach@pengutronix.de, devicetree@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@pengutronix.de, imx@lists.linux.dev Subject: Re: [PATCH v4 2/4] dts: arm64: imx8mq: Add dbi2 and atu reg for i.MX8MQ PCIe EP Message-ID: References: <1722218205-10683-1-git-send-email-hongxing.zhu@nxp.com> <1722218205-10683-3-git-send-email-hongxing.zhu@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1722218205-10683-3-git-send-email-hongxing.zhu@nxp.com> X-CM-TRANSID: Mc8vCgBnryz2ybpmE0pSAg--.46098S3 X-Coremail-Antispam: 1Uf129KBjvdXoWrtF1xXw45AF1rJFWxtr47Arb_yoW3trb_u3 y8Ja40gw1FkF17K343JF4S9FWjk34q9Fy5Xrn8t39ay3yxJayjkFykt3s5Ar1UKa9rWFsr CFW7Xa40vrWfujkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IU0CfO7UUUUU== X-Originating-IP: [117.62.10.86] X-CM-SenderInfo: pvkd40hjxrjqh1hdxhhqhw/1tbiBAo6ZWa6wscd1AAAsB X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240812_195051_178363_E10F3DE5 X-CRM114-Status: GOOD ( 10.63 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 29, 2024 at 09:56:43AM +0800, Richard Zhu wrote: > Add dbi2 and iatu reg for i.MX8MQ PCIe EP. > > For i.MX8M PCIe EP, the dbi2 and atu addresses are pre-defined in the > driver. This method is not good. > > In commit b7d67c6130ee ("PCI: imx6: Add iMX95 Endpoint (EP) support"), > Frank suggests to fetch the dbi2 and atu from DT directly. This commit is > preparation to do that for i.MX8MQ PCIe EP. > > These changes wouldn't break driver function. When "dbi2" and "atu" > properties are present, i.MX PCIe driver would fetch the according base > addresses from DT directly. If only two reg properties are provided, i.MX > PCIe driver would fall back to the old method. > > Signed-off-by: Richard Zhu > Reviewed-by: Frank Li "arm64: dts: ..." for subject prefix. Shawn