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 46D38C369D8 for ; Sat, 26 Apr 2025 15:05:12 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=mn6IpMXIMmPiTuEVSSvonNh3I2kdHI+Y6hcaUr3F/XY=; b=I0Cn2aqhMTcIYF 9vIn6H1W+gRxBTFoI4i7YY3JSlhu6Hro2RB0voPKSiHhoPqRx0/RubA1QgcflgtGyc8axiW/VR/ku NUTVzDhD1I6J1RLzdrHrjR++7cJMe2VvdBpqsTNalAp+uuVQVrOePh6swILndMDWGJ2QBB+UqqTP4 n4OAE3q1N7XZRmNyMJrdXbPJ/YL76J982WV+iaND2N334sIGLrw+QI/zMPhyrGQbPqQhh7Bf5u3OY y2W3l8yWQ3lfN4d53j8Y45VrPLieSlqheXsE3yny/bYp22WZ4BOsRhJD/jDOLObLcjJubqfTkNUGB wpHi2+QeX0jZy+75v3SA==; 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charset="utf-8"; Format="flowed" Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org CgpPbiAyMDI1LzQvMjYgMDI6MTMsIFBhbGkgUm9ow6FyIHdyb3RlOgo+IE9uIEZyaWRheSAyNSBB cHJpbCAyMDI1IDE3OjU3OjA4IEhhbnMgWmhhbmcgd3JvdGU6Cj4+IGRpZmYgLS1naXQgYS9kcml2 ZXJzL3BjaS9jb250cm9sbGVyL3BjaS1hYXJkdmFyay5jIGIvZHJpdmVycy9wY2kvY29udHJvbGxl ci9wY2ktYWFyZHZhcmsuYwo+PiBpbmRleCBhMjk3OTZjY2U0MjAuLmQ4ODUyODkyOTk0YSAxMDA2 NDQKPj4gLS0tIGEvZHJpdmVycy9wY2kvY29udHJvbGxlci9wY2ktYWFyZHZhcmsuYwo+PiArKysg Yi9kcml2ZXJzL3BjaS9jb250cm9sbGVyL3BjaS1hYXJkdmFyay5jCj4+IEBAIC01NDksOSArNTQ5 LDcgQEAgc3RhdGljIHZvaWQgYWR2a19wY2llX3NldHVwX2h3KHN0cnVjdCBhZHZrX3BjaWUgKnBj aWUpCj4+ICAgCXJlZyA9IGFkdmtfcmVhZGwocGNpZSwgUENJRV9DT1JFX1BDSUVYUF9DQVAgKyBQ Q0lfRVhQX0RFVkNUTCk7Cj4+ICAgCXJlZyAmPSB+UENJX0VYUF9ERVZDVExfUkVMQVhfRU47Cj4+ ICAgCXJlZyAmPSB+UENJX0VYUF9ERVZDVExfTk9TTk9PUF9FTjsKPj4gLQlyZWcgJj0gflBDSV9F WFBfREVWQ1RMX1BBWUxPQUQ7Cj4+ICAgCXJlZyAmPSB+UENJX0VYUF9ERVZDVExfUkVBRFJROwo+ PiAtCXJlZyB8PSBQQ0lfRVhQX0RFVkNUTF9QQVlMT0FEXzUxMkI7Cj4+ICAgCXJlZyB8PSBQQ0lf RVhQX0RFVkNUTF9SRUFEUlFfNTEyQjsKPj4gICAJYWR2a193cml0ZWwocGNpZSwgcmVnLCBQQ0lF X0NPUkVfUENJRVhQX0NBUCArIFBDSV9FWFBfREVWQ1RMKTsKPj4gICAKPj4gLS0gCj4+IDIuMjUu MQo+Pgo+IAo+IFBsZWFzZSBkbyBub3QgcmVtb3ZlIHRoaXMgY29kZS4gSXQgaXMgcmVxdWlyZWQg cGFydCBvZiB0aGUKPiBpbml0aWFsaXphdGlvbiBvZiB0aGUgYWFyZHZhcmsgUENJIGNvbnRyb2xs ZXIgYXQgdGhlIHNwZWNpZmljIHBoYXNlLAo+IGFzIGRlZmluZWQgaW4gdGhlIEFybWFkYSAzNzAw IEZ1bmN0aW9uYWwgU3BlY2lmaWNhdGlvbi4KCkhpIFBhbGksCgpUaGlzIHNlcmllcyBvZiBwYXRj aGVzIGlzIGRpc2N1c3NpbmcgdGhlIGluaXRpYWxpemF0aW9uIG9mIERldkN0bC5NUFMgYnkgCnRo ZSBSb290IFBvcnQuIFBsZWFzZSBsb29rIGF0IHRoZSBmaXJzdCBwYXRjaCBJIHN1Ym1pdHRlZC4g SWYgdGhlcmUgaXMgYSAKcmVhc29uYWJsZSBtZXRob2QgaW4gdGhlIGVuZCwgRGV2Q3RsLk1QUyB3 aWxsIGFsc28gYmUgY29uZmlndXJlZCAKc3VjY2Vzc2Z1bGx5LiBUaGUgUENJZSBtYWludGFpbmVy IHdpbGwgZ2l2ZSB0aGUgcmV2aWV3IG9waW5pb25zLiBQbGVhc2UgCnJlc3QgYXNzdXJlZCB0aGF0 IGl0IHdpbGwgbm90IGFmZmVjdCB0aGUgZnVuY3Rpb25zIG9mIHRoZSBhYXJkdmFyayBQQ0kgCmNv bnRyb2xsZXIuCgpSb2NrY2hpcCdzIFJLMzU4OCBhbHNvIGhhcyB0aGUgc2FtZSBwcm9ibGVtLgoK Cmh0dHBzOi8vcGF0Y2h3b3JrLmtlcm5lbC5vcmcvcHJvamVjdC9saW51eC1wY2kvcGF0Y2gvMjAy NTA0MTYxNTE5MjYuMTQwMjAyLTEtMTgyNTUxMTcxNTlAMTYzLmNvbS8KCkJlc3QgcmVnYXJkcywK SGFucwoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxp bnV4LWFtbG9naWMgbWFpbGluZyBsaXN0CmxpbnV4LWFtbG9naWNAbGlzdHMuaW5mcmFkZWFkLm9y ZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFtbG9n aWMK 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 B68DCC369D3 for ; 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Sat, 26 Apr 2025 15:04:59 +0000 Received: from m16.mail.163.com ([117.135.210.2]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u8h3W-00000002CRa-2CYl; Sat, 26 Apr 2025 15:03:04 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=Message-ID:Date:MIME-Version:Subject:From: Content-Type; bh=2NTP26rZSO4aLxowU1tMWp58BMiXt/URHc+KIhHuxrE=; b=MTNfI1bjj/6sOwjhpxl6bkmPC/+LTUKOPSiUAIeVV8nKWRz27uFqb1sJ+lDGtQ 63MoHFbayfTFrFSrFK+NANLTRI56wf+0T1ppXgIdKpVkRgIFTswtZJ8DfmcNUM85 eMNUYZOx0YDL/JumkNNFBNzS8YHXDrsFhuJdclLcPClrM= Received: from [192.168.71.89] (unknown []) by gzga-smtp-mtada-g0-4 (Coremail) with SMTP id _____wBXbM5v9QxolMNQCw--.59638S2; Sat, 26 Apr 2025 23:02:08 +0800 (CST) Message-ID: <5e2844cc-8359-4b87-a8ce-eb5ebb85f8ff@163.com> Date: Sat, 26 Apr 2025 23:02:08 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] PCI: Remove redundant MPS configuration To: =?UTF-8?Q?Pali_Roh=C3=A1r?= Cc: lpieralisi@kernel.org, kw@linux.com, bhelgaas@google.com, heiko@sntech.de, thomas.petazzoni@bootlin.com, manivannan.sadhasivam@linaro.org, yue.wang@Amlogic.com, neil.armstrong@linaro.org, robh@kernel.org, jingoohan1@gmail.com, khilman@baylibre.com, jbrunet@baylibre.com, martin.blumenstingl@googlemail.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20250425095708.32662-1-18255117159@163.com> <20250425095708.32662-3-18255117159@163.com> <20250425181345.bybgcht5tweyg43k@pali> Content-Language: en-US From: Hans Zhang <18255117159@163.com> In-Reply-To: <20250425181345.bybgcht5tweyg43k@pali> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CM-TRANSID: _____wBXbM5v9QxolMNQCw--.59638S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7ZryUGr4UtrWfAw1rGF18Grg_yoW8Wr4xpa 13XFs3JF4Fqr15uF17Ja10gr1fXasIkFy5Xws8GFW3Za4aqw1UGFy2krs0kasrXr4v9F17 Za42v3ySyanxtaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UmYL9UUUUU= X-Originating-IP: [124.79.128.52] X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbBDxM6o2gLzK+LogABst X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250426_080302_958063_69DE318A X-CRM114-Status: GOOD ( 10.16 ) 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 2025/4/26 02:13, Pali Rohár wrote: > On Friday 25 April 2025 17:57:08 Hans Zhang wrote: >> diff --git a/drivers/pci/controller/pci-aardvark.c b/drivers/pci/controller/pci-aardvark.c >> index a29796cce420..d8852892994a 100644 >> --- a/drivers/pci/controller/pci-aardvark.c >> +++ b/drivers/pci/controller/pci-aardvark.c >> @@ -549,9 +549,7 @@ static void advk_pcie_setup_hw(struct advk_pcie *pcie) >> reg = advk_readl(pcie, PCIE_CORE_PCIEXP_CAP + PCI_EXP_DEVCTL); >> reg &= ~PCI_EXP_DEVCTL_RELAX_EN; >> reg &= ~PCI_EXP_DEVCTL_NOSNOOP_EN; >> - reg &= ~PCI_EXP_DEVCTL_PAYLOAD; >> reg &= ~PCI_EXP_DEVCTL_READRQ; >> - reg |= PCI_EXP_DEVCTL_PAYLOAD_512B; >> reg |= PCI_EXP_DEVCTL_READRQ_512B; >> advk_writel(pcie, reg, PCIE_CORE_PCIEXP_CAP + PCI_EXP_DEVCTL); >> >> -- >> 2.25.1 >> > > Please do not remove this code. It is required part of the > initialization of the aardvark PCI controller at the specific phase, > as defined in the Armada 3700 Functional Specification. Hi Pali, This series of patches is discussing the initialization of DevCtl.MPS by the Root Port. Please look at the first patch I submitted. If there is a reasonable method in the end, DevCtl.MPS will also be configured successfully. The PCIe maintainer will give the review opinions. Please rest assured that it will not affect the functions of the aardvark PCI controller. Rockchip's RK3588 also has the same problem. https://patchwork.kernel.org/project/linux-pci/patch/20250416151926.140202-1-18255117159@163.com/ Best regards, Hans 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 ADF69C369CB for ; Sat, 26 Apr 2025 15:05:10 +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-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To:Subject: MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; 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Sat, 26 Apr 2025 23:02:08 +0800 (CST) Message-ID: <5e2844cc-8359-4b87-a8ce-eb5ebb85f8ff@163.com> Date: Sat, 26 Apr 2025 23:02:08 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] PCI: Remove redundant MPS configuration To: =?UTF-8?Q?Pali_Roh=C3=A1r?= Cc: lpieralisi@kernel.org, kw@linux.com, bhelgaas@google.com, heiko@sntech.de, thomas.petazzoni@bootlin.com, manivannan.sadhasivam@linaro.org, yue.wang@Amlogic.com, neil.armstrong@linaro.org, robh@kernel.org, jingoohan1@gmail.com, khilman@baylibre.com, jbrunet@baylibre.com, martin.blumenstingl@googlemail.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-rockchip@lists.infradead.org References: <20250425095708.32662-1-18255117159@163.com> <20250425095708.32662-3-18255117159@163.com> <20250425181345.bybgcht5tweyg43k@pali> Content-Language: en-US From: Hans Zhang <18255117159@163.com> In-Reply-To: <20250425181345.bybgcht5tweyg43k@pali> X-CM-TRANSID: _____wBXbM5v9QxolMNQCw--.59638S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7ZryUGr4UtrWfAw1rGF18Grg_yoW8Wr4xpa 13XFs3JF4Fqr15uF17Ja10gr1fXasIkFy5Xws8GFW3Za4aqw1UGFy2krs0kasrXr4v9F17 Za42v3ySyanxtaUanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07UmYL9UUUUU= X-Originating-IP: [124.79.128.52] X-CM-SenderInfo: rpryjkyvrrlimvzbiqqrwthudrp/xtbBDxM6o2gLzK+LogABst X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250426_080302_958063_69DE318A X-CRM114-Status: GOOD ( 10.16 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org CgpPbiAyMDI1LzQvMjYgMDI6MTMsIFBhbGkgUm9ow6FyIHdyb3RlOgo+IE9uIEZyaWRheSAyNSBB cHJpbCAyMDI1IDE3OjU3OjA4IEhhbnMgWmhhbmcgd3JvdGU6Cj4+IGRpZmYgLS1naXQgYS9kcml2 ZXJzL3BjaS9jb250cm9sbGVyL3BjaS1hYXJkdmFyay5jIGIvZHJpdmVycy9wY2kvY29udHJvbGxl ci9wY2ktYWFyZHZhcmsuYwo+PiBpbmRleCBhMjk3OTZjY2U0MjAuLmQ4ODUyODkyOTk0YSAxMDA2 NDQKPj4gLS0tIGEvZHJpdmVycy9wY2kvY29udHJvbGxlci9wY2ktYWFyZHZhcmsuYwo+PiArKysg Yi9kcml2ZXJzL3BjaS9jb250cm9sbGVyL3BjaS1hYXJkdmFyay5jCj4+IEBAIC01NDksOSArNTQ5 LDcgQEAgc3RhdGljIHZvaWQgYWR2a19wY2llX3NldHVwX2h3KHN0cnVjdCBhZHZrX3BjaWUgKnBj aWUpCj4+ICAgCXJlZyA9IGFkdmtfcmVhZGwocGNpZSwgUENJRV9DT1JFX1BDSUVYUF9DQVAgKyBQ Q0lfRVhQX0RFVkNUTCk7Cj4+ICAgCXJlZyAmPSB+UENJX0VYUF9ERVZDVExfUkVMQVhfRU47Cj4+ ICAgCXJlZyAmPSB+UENJX0VYUF9ERVZDVExfTk9TTk9PUF9FTjsKPj4gLQlyZWcgJj0gflBDSV9F WFBfREVWQ1RMX1BBWUxPQUQ7Cj4+ICAgCXJlZyAmPSB+UENJX0VYUF9ERVZDVExfUkVBRFJROwo+ PiAtCXJlZyB8PSBQQ0lfRVhQX0RFVkNUTF9QQVlMT0FEXzUxMkI7Cj4+ICAgCXJlZyB8PSBQQ0lf RVhQX0RFVkNUTF9SRUFEUlFfNTEyQjsKPj4gICAJYWR2a193cml0ZWwocGNpZSwgcmVnLCBQQ0lF X0NPUkVfUENJRVhQX0NBUCArIFBDSV9FWFBfREVWQ1RMKTsKPj4gICAKPj4gLS0gCj4+IDIuMjUu MQo+Pgo+IAo+IFBsZWFzZSBkbyBub3QgcmVtb3ZlIHRoaXMgY29kZS4gSXQgaXMgcmVxdWlyZWQg cGFydCBvZiB0aGUKPiBpbml0aWFsaXphdGlvbiBvZiB0aGUgYWFyZHZhcmsgUENJIGNvbnRyb2xs ZXIgYXQgdGhlIHNwZWNpZmljIHBoYXNlLAo+IGFzIGRlZmluZWQgaW4gdGhlIEFybWFkYSAzNzAw IEZ1bmN0aW9uYWwgU3BlY2lmaWNhdGlvbi4KCkhpIFBhbGksCgpUaGlzIHNlcmllcyBvZiBwYXRj aGVzIGlzIGRpc2N1c3NpbmcgdGhlIGluaXRpYWxpemF0aW9uIG9mIERldkN0bC5NUFMgYnkgCnRo ZSBSb290IFBvcnQuIFBsZWFzZSBsb29rIGF0IHRoZSBmaXJzdCBwYXRjaCBJIHN1Ym1pdHRlZC4g SWYgdGhlcmUgaXMgYSAKcmVhc29uYWJsZSBtZXRob2QgaW4gdGhlIGVuZCwgRGV2Q3RsLk1QUyB3 aWxsIGFsc28gYmUgY29uZmlndXJlZCAKc3VjY2Vzc2Z1bGx5LiBUaGUgUENJZSBtYWludGFpbmVy IHdpbGwgZ2l2ZSB0aGUgcmV2aWV3IG9waW5pb25zLiBQbGVhc2UgCnJlc3QgYXNzdXJlZCB0aGF0 IGl0IHdpbGwgbm90IGFmZmVjdCB0aGUgZnVuY3Rpb25zIG9mIHRoZSBhYXJkdmFyayBQQ0kgCmNv bnRyb2xsZXIuCgpSb2NrY2hpcCdzIFJLMzU4OCBhbHNvIGhhcyB0aGUgc2FtZSBwcm9ibGVtLgoK Cmh0dHBzOi8vcGF0Y2h3b3JrLmtlcm5lbC5vcmcvcHJvamVjdC9saW51eC1wY2kvcGF0Y2gvMjAy NTA0MTYxNTE5MjYuMTQwMjAyLTEtMTgyNTUxMTcxNTlAMTYzLmNvbS8KCkJlc3QgcmVnYXJkcywK SGFucwoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxp bnV4LXJvY2tjaGlwIG1haWxpbmcgbGlzdApMaW51eC1yb2NrY2hpcEBsaXN0cy5pbmZyYWRlYWQu b3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxtYW4vbGlzdGluZm8vbGludXgtcm9j a2NoaXAK