From patchwork Mon Aug 7 11:18:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: MD Danish Anwar X-Patchwork-Id: 13343630 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 6C3D7C04FE0 for ; Mon, 7 Aug 2023 11:19:47 +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: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=6VBC/V8445okbRzqwyEqJKQtYJ763iCIpJElOsPktn0=; b=gq9Zs9X0034jAH K8EamYfAJ3s4CJGLBZi7bqanLEJZzcUffJ0pEonZYgcokkhf0Y8w8Dajdq3xaT6Ehu5fNXOGoEI/A +seng4wl9JChgnvq6BhZL3tL4g4kNMgdmKMluB3KvjEhdXjS6z0YYEq0Wel50/5xQYNSbuekScuQr RIG6nozRiXuR98G86sJ3PTpJeEOV5uH0zTI+qwEhDkMLzjm/sXekAtXkgSNhQ4kLQHX0PxAiy9tKt ZwLXeuGRhPsP3WrImRi5qrLSJmehsakpNywgNbXmzuex269G2Em21FhOYP2BmbyjNkIUl1V5cfz/W DgbCVwXcpjW7pffD8PkA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qSyGh-00H3Pz-1J; Mon, 07 Aug 2023 11:19:23 +0000 Received: from fllv0015.ext.ti.com ([198.47.19.141]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qSyGe-00H3OI-11 for linux-arm-kernel@lists.infradead.org; Mon, 07 Aug 2023 11:19:21 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 377BJGfW130057; Mon, 7 Aug 2023 06:19:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1691407156; bh=Pialzk4xc8UGsA0M2InFr9yj7iGuJ1L6KF+ie/Whcb4=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=EciJOhIJgRU8QkYeNLI+q/d+Q7lIfGeNAEoo+I8Ux5zpZPr+plyX59A8vh9EpLt98 Av8GSUln30NXGxzi8ZIq0potpyzJCExCwCIxoo14yj27AjR1lE8Nk1uGSIGJ3I9frO WWlroz670znP/qW1q+zMYy0spjqqd0U6HlwRDxU8= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 377BJGGY086346 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 7 Aug 2023 06:19:16 -0500 Received: from DLEE114.ent.ti.com (157.170.170.25) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Mon, 7 Aug 2023 06:19:15 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DLEE114.ent.ti.com (157.170.170.25) 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; Mon, 7 Aug 2023 06:19:16 -0500 Received: from lelv0854.itg.ti.com (lelv0854.itg.ti.com [10.181.64.140]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 377BJF94107064; Mon, 7 Aug 2023 06:19:15 -0500 Received: from localhost (uda0501179.dhcp.ti.com [172.24.227.217]) by lelv0854.itg.ti.com (8.14.7/8.14.7) with ESMTP id 377BJE69031099; Mon, 7 Aug 2023 06:19:15 -0500 From: MD Danish Anwar To: Conor Dooley , Krzysztof Kozlowski , Rob Herring , Vignesh Raghavendra , Nishanth Menon CC: Tero Kristo , , , , , , Subject: [PATCH RFC 2/3] arm64: dts: ti: k3-am65-main: Add PRU system events for virtio Date: Mon, 7 Aug 2023 16:48:54 +0530 Message-ID: <20230807111855.2614761-3-danishanwar@ti.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230807111855.2614761-1-danishanwar@ti.com> References: <20230807111855.2614761-1-danishanwar@ti.com> 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-20230807_041920_435785_7BC9C60A X-CRM114-Status: GOOD ( 12.49 ) 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 --- 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 0265f5defbae..10e69947019e 100644 --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi @@ -1198,6 +1198,9 @@ 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 { @@ -1207,6 +1210,9 @@ 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 { @@ -1225,6 +1231,9 @@ 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 { @@ -1234,6 +1243,9 @@ 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 { @@ -1352,6 +1364,9 @@ 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 { @@ -1361,6 +1376,9 @@ 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 { @@ -1379,6 +1397,9 @@ 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 { @@ -1388,6 +1409,9 @@ 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 { @@ -1506,6 +1530,9 @@ 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 { @@ -1515,6 +1542,9 @@ 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 { @@ -1533,6 +1563,9 @@ 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 { @@ -1542,6 +1575,9 @@ 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 {