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 D903EC369CA for ; Sat, 19 Apr 2025 18:08:20 +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:Content-Transfer-Encoding: Content-Type: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=R0X7lvNsn2JIE9CIy/kM3jZEUmhu6NaFtSLnNtOm3oM=; b=jTbn/fsbxCXFmbFErP4RSesrGB uLhWwOCHg/Zk+QF7PBREldIdFsJ16SuKoQPFoNuj5V8SM4VIFgQy6KtmmfjbNHNnjoSzCerEjfZtj 2SRH5McmMa/4lqvV4jgjKZ0wUsY4Eo2QwXETbGi9Ti7pi6kgbdOA4Z6f9QSJXI+Av6gIhyxxXHoPG d4cLxBYU4ZrrqNizV+YN19fKSbL/wdwx6oDBmc5A7sLOiGyyL6EjHn+JiTZsWmlpFAuGtQK36IqSk dmejOVfYOj1FLrMdkuTju53dNScM0XpdZ6IpsaKsE96kPc80y49jkEoE9QkAx4e3LKWv7IgDUGShk piEU0Prw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u6Cbm-00000001eRE-2NOb; Sat, 19 Apr 2025 18:08:06 +0000 Received: from lelvem-ot02.ext.ti.com ([198.47.23.235]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u6CZr-00000001eIp-0ydI for linux-arm-kernel@lists.infradead.org; Sat, 19 Apr 2025 18:06:10 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelvem-ot02.ext.ti.com (8.15.2/8.15.2) with ESMTPS id 53JI5u7Q1243120 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sat, 19 Apr 2025 13:05:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1745085956; bh=R0X7lvNsn2JIE9CIy/kM3jZEUmhu6NaFtSLnNtOm3oM=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=LgcWH8d3mXJrZFq/nhHp+Isr82SpNywOVRmM9v+ooJPD704MUeYKEC6mjN1m46RGV AG7L0if7OzVQ67ZvCcJXCFHW1rFgVVGMFQZrCXTXtJ5UD5+ezd3yRdIKs133nNe8Oh QPethh/Gjf7FtnS+c89j+oSAxlb2Tgxw+0KVUEeQ= Received: from DFLE107.ent.ti.com (dfle107.ent.ti.com [10.64.6.28]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 53JI5udw001727 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Sat, 19 Apr 2025 13:05:56 -0500 Received: from DFLE113.ent.ti.com (10.64.6.34) by DFLE107.ent.ti.com (10.64.6.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Sat, 19 Apr 2025 13:05:56 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Sat, 19 Apr 2025 13:05:56 -0500 Received: from [10.249.141.75] ([10.249.141.75]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 53JI5pmh069477; Sat, 19 Apr 2025 13:05:52 -0500 Message-ID: <8b707fbc-9d82-48d0-a227-366d4e83e8a7@ti.com> Date: Sat, 19 Apr 2025 23:35:50 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/7] arm64: dts: ti: k3-j7200-main: switch to 64-bit address space for PCIe1 To: Siddharth Vadapalli , , , , , , CC: , , , , References: <20250417120407.2646929-1-s-vadapalli@ti.com> <20250417120407.2646929-3-s-vadapalli@ti.com> Content-Language: en-US From: "Kumar, Udit" In-Reply-To: <20250417120407.2646929-3-s-vadapalli@ti.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250419_110607_421384_23B7BD2F X-CRM114-Status: GOOD ( 15.59 ) 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 4/17/2025 5:34 PM, Siddharth Vadapalli wrote: > The PCIe0 instance of PCIe in J7200 SoC supports: > 1. 128 MB address region in the 32-bit address space > 2. 4 GB address region in the 64-bit address space > > The default configuration is that of a 128 MB address region in the > 32-bit address space. While this might be sufficient for most use-cases, > it is insufficient for supporting use-cases which require larger address > spaces. Therefore, switch to using the 64-bit address space with a 4 GB > address region. > > Signed-off-by: Siddharth Vadapalli > --- > arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 7 ++++--- > 1 file changed, 4 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi > index 5ab510a0605f..e898dffdebbe 100644 > --- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi > +++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi > @@ -759,7 +759,7 @@ pcie1_rc: pcie@2910000 { > reg = <0x00 0x02910000 0x00 0x1000>, > <0x00 0x02917000 0x00 0x400>, > <0x00 0x0d800000 0x00 0x00800000>, > - <0x00 0x18000000 0x00 0x00001000>; > + <0x41 0x00000000 0x00 0x00001000>; > reg-names = "intd_cfg", "user_cfg", "reg", "cfg"; > interrupt-names = "link_state"; > interrupts = ; > @@ -778,8 +778,9 @@ pcie1_rc: pcie@2910000 { > device-id = <0xb00f>; > msi-map = <0x0 &gic_its 0x0 0x10000>; > dma-coherent; > - ranges = <0x01000000 0x0 0x18001000 0x00 0x18001000 0x0 0x0010000>, > - <0x02000000 0x0 0x18011000 0x00 0x18011000 0x0 0x7fef000>; > + ranges = <0x01000000 0x00 0x00001000 0x41 0x00001000 0x00 0x00100000>, /* IO (1 MB) */ > + <0x02000000 0x00 0x00101000 0x41 0x00101000 0x00 0x08000000>, /* 32-bit Non-Prefetchable MEM (128 MB) */ > + <0x43000000 0x41 0x08101000 0x41 0x08101000 0x00 0xf7eff000>; /* 64-bit Prefetchable MEM (4 GB - (129 MB + 4 KB)) */ Sorry for novice question, with this change,  How do you see  old EP working which supports 32 bit addressing, or some translation is possible ? 0x43000000 0x41 0x08101000 0x41 0x08101000 0x00 0xf7eff000> to 0x63000000 0x00 0x08101000 0x41 0x08101000 0x00 0xf7eff000> > dma-ranges = <0x02000000 0x0 0x0 0x0 0x0 0x10000 0x0>; > status = "disabled"; > };