From patchwork Tue Apr 23 10:08:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13639700 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 84EF3C4345F for ; Tue, 23 Apr 2024 10:09:12 +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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version: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:In-Reply-To:References: List-Owner; bh=cdO/ahRuXPMjo2JM6d/dvrYj0fjWcmzb5CpQzb1iI2k=; b=B28eFarfr950j+ 1jXl8+B7mBAqqjF0pMjH1ERd3TFU0L8vLLzsUDfFgR+DG7wlD0OXyrcwVlq4HEU+QAmyPI74QR45c q7CcInZ3BisfpgT55x1QyEaCEe1fP10/sXCI8238J2b2cMbUqjDLP0Np+ewHcy9Oojw30JoiBAajS u/bp+HhaF2e7UrJP9zJjdTAGnnqch4cgr0Yio+NTYF5HHQU6DBl6OjaJtFKmfK04EYzVcA1hCfbvC 1lsuYs3e6ggkOsucGIB1wrYq9L3tkClg4okbRh+KIZTlcw7NT5Twx9FO0d1r+H0yj9Sk6eCNpm7hj itqcADw0q205cCpI98sQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzD53-0000000GmsL-2Nm8; Tue, 23 Apr 2024 10:08:53 +0000 Received: from lelv0143.ext.ti.com ([198.47.23.248]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rzD50-0000000Gmrd-0NJR for linux-arm-kernel@lists.infradead.org; Tue, 23 Apr 2024 10:08:51 +0000 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 43NA8fqD120870; Tue, 23 Apr 2024 05:08:41 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1713866921; bh=3JXmrBeiXZGoZKDdFn4LlZ7IlW8HBZiV1xctWrrEyBg=; h=From:To:CC:Subject:Date; b=Inv1zjM9gXijhbZdpoEgAWSk+1oFDVVPeNJ2IvyjUL5Uhk85s46yhuYySl4jcLbNY 3cnmujvaC8ExvEXWqCCAd1rziAbFIScFhYB8YA6oyIebEFEMUhQQDwo/XvfoLEQInb PUHTylPLzFLMMG/eJ+MusE2cKmZOMnQBR5XhJ2ik= Received: from DFLE101.ent.ti.com (dfle101.ent.ti.com [10.64.6.22]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 43NA8fSv031271 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 23 Apr 2024 05:08:41 -0500 Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE101.ent.ti.com (10.64.6.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 23 Apr 2024 05:08:41 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DFLE102.ent.ti.com (10.64.6.23) 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; Tue, 23 Apr 2024 05:08:41 -0500 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 43NA8fQ5104100; Tue, 23 Apr 2024 05:08:41 -0500 Received: from localhost (danish-tpc.dhcp.ti.com [10.24.69.25]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 43NA8dGr017727; Tue, 23 Apr 2024 05:08:40 -0500 From: MD Danish Anwar To: Vignesh Raghavendra , Nishanth Menon CC: Conor Dooley , Krzysztof Kozlowski , Rob Herring , , , , Tero Kristo , , , Roger Quadros , Subject: [PATCH] arm64: dts: ti: k3-am65-main: Add PRU system events for virtio Date: Tue, 23 Apr 2024 15:38:38 +0530 Message-ID: <20240423100838.1421845-1-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240423_030850_266679_441FF731 X-CRM114-Status: GOOD ( 12.30 ) 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 From: Suman Anna A PRU system event "vring" has been added to each PRU and RTU node in each of the ICSSG0, ICSSG1 and ICSSG2 remote processor subsystems to enable the virtio/rpmsg communication between MPU and that PRU/RTU core. The additions are done in the base k3-am65-main.dtsi, and so are inherited by all the K3 AM65x boards. The PRU system events is the preferred approach over using TI mailboxes, as it eliminates an external peripheral access from the PRU/RTU-side, and keeps the interrupt generation internal to the ICSSG. The difference from MPU would be minimal in using one versus the other. Mailboxes can still be used if desired, but currently there is no support on firmware-side for K3 SoCs to use mailboxes. Either approach would require that an appropriate firmware image is loaded/booted on the PRU. Signed-off-by: Suman Anna Signed-off-by: Kishon Vijay Abraham I Signed-off-by: MD Danish Anwar Acked-by: Ravi Gunasekaran --- This patch is based on linux-next tag next-20240423 arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 36 ++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi index 0d68aa8e946f..72aa3b9aacce 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -1059,6 +1059,9 @@ pru0_0: pru@34000 { <0x22400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru0_0-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <16 2 2>; + interrupt-names = "vring"; }; rtu0_0: rtu@4000 { @@ -1068,6 +1071,9 @@ rtu0_0: rtu@4000 { <0x23400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu0_0-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <20 4 4>; + interrupt-names = "vring"; }; tx_pru0_0: txpru@a000 { @@ -1086,6 +1092,9 @@ pru0_1: pru@38000 { <0x24400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru0_1-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <18 3 3>; + interrupt-names = "vring"; }; rtu0_1: rtu@6000 { @@ -1095,6 +1104,9 @@ rtu0_1: rtu@6000 { <0x23c00 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu0_1-fw"; + interrupt-parent = <&icssg0_intc>; + interrupts = <22 5 5>; + interrupt-names = "vring"; }; tx_pru0_1: txpru@c000 { @@ -1213,6 +1225,9 @@ pru1_0: pru@34000 { <0x22400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru1_0-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <16 2 2>; + interrupt-names = "vring"; }; rtu1_0: rtu@4000 { @@ -1222,6 +1237,9 @@ rtu1_0: rtu@4000 { <0x23400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu1_0-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <20 4 4>; + interrupt-names = "vring"; }; tx_pru1_0: txpru@a000 { @@ -1240,6 +1258,9 @@ pru1_1: pru@38000 { <0x24400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru1_1-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <18 3 3>; + interrupt-names = "vring"; }; rtu1_1: rtu@6000 { @@ -1249,6 +1270,9 @@ rtu1_1: rtu@6000 { <0x23c00 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu1_1-fw"; + interrupt-parent = <&icssg1_intc>; + interrupts = <22 5 5>; + interrupt-names = "vring"; }; tx_pru1_1: txpru@c000 { @@ -1367,6 +1391,9 @@ pru2_0: pru@34000 { <0x22400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru2_0-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <16 2 2>; + interrupt-names = "vring"; }; rtu2_0: rtu@4000 { @@ -1376,6 +1403,9 @@ rtu2_0: rtu@4000 { <0x23400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu2_0-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <20 4 4>; + interrupt-names = "vring"; }; tx_pru2_0: txpru@a000 { @@ -1394,6 +1424,9 @@ pru2_1: pru@38000 { <0x24400 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-pru2_1-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <18 3 3>; + interrupt-names = "vring"; }; rtu2_1: rtu@6000 { @@ -1403,6 +1436,9 @@ rtu2_1: rtu@6000 { <0x23c00 0x100>; reg-names = "iram", "control", "debug"; firmware-name = "am65x-rtu2_1-fw"; + interrupt-parent = <&icssg2_intc>; + interrupts = <22 5 5>; + interrupt-names = "vring"; }; tx_pru2_1: txpru@c000 {