From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fllv0015.ext.ti.com (fllv0015.ext.ti.com [198.47.19.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 85BCF158A07; Wed, 24 Apr 2024 06:55:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.19.141 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713941743; cv=none; b=r6ULZj0C7wTeDNWQbYMlFmtCE4hNMQvq49DQKaEwWsjKDHuM8SlcGdYUykz5R+ECmvz7xOmoP10aF5gL8lZMD3t10BD4H0Q08zzpBkWunRQu0+pGaDiQOAeTA8LMUM7ZpUpJCz6/8vjcjuNgzu6WVDlKNxOJDCYtQTlKoBd6D0Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713941743; c=relaxed/simple; bh=JR54dDDk83m+e40bWsv9fRryEEDgFCZqtKo9xVfWVH8=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=U8O+wB0ijezX3ABLWL1bwt4H3sGujhGy8EVrwcZOXNIkmcfE+0ehABKSe6Hk8HXy9QgWaAkI7K613L3PdjqQwRc3QUC8Pt7/DJth3tqeGdTmL73O9bIXSmYeMCH+4lqHEIIrWa3w3TxN4gmNWmJS4zJkigOibXf+ojk6OACEM38= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=l4mL2YDt; arc=none smtp.client-ip=198.47.19.141 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="l4mL2YDt" Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 43O6tTPI057180; Wed, 24 Apr 2024 01:55:29 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1713941729; bh=PD6Eu9MZaXRIiE89W5PX2nUwC/2H67X4j2pdVBXYi38=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=l4mL2YDtc2pKDQhQEf/rDCxz61onJfP2u38L6PV2ZEYC72Usnr8W2H2NsoBNxjAtQ ysDJsmfm1vQgppZteHmSqAAVnTFkqCmabCvpUY/JuUicvOOVdreMsAX5anPvO8Tttc tDYsSJwUY/XQPETf35NNdIeWoMoixY+6LEg+u9Qw= Received: from DLEE114.ent.ti.com (dlee114.ent.ti.com [157.170.170.25]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 43O6tT7E075317 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 24 Apr 2024 01:55:29 -0500 Received: from DLEE104.ent.ti.com (157.170.170.34) 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; Wed, 24 Apr 2024 01:55:29 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DLEE104.ent.ti.com (157.170.170.34) 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; Wed, 24 Apr 2024 01:55:29 -0500 Received: from [10.250.149.192] ([10.250.149.192]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 43O6tPGn047033; Wed, 24 Apr 2024 01:55:25 -0500 Message-ID: <3f00114c-7185-4a50-9d6a-b3e31d7d3eb5@ti.com> Date: Wed, 24 Apr 2024 12:25:24 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] arm64: dts: ti: k3-am64-main: Add PRU system events for virtio To: MD Danish Anwar , Vignesh Raghavendra , Nishanth Menon CC: Conor Dooley , Krzysztof Kozlowski , Rob Herring , , , , Tero Kristo , , Roger Quadros References: <20240423100608.1421652-1-danishanwar@ti.com> Content-Language: en-US From: Ravi Gunasekaran In-Reply-To: <20240423100608.1421652-1-danishanwar@ti.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 On 4/23/2024 3:36 PM, MD Danish Anwar wrote: > From: Suman Anna > > PRU system events "vring" have been added to each PRU and RTU node > in each of the ICSSG0 and ICSSG1 remote processor subsystems to > enable the virtio/rpmsg communication between MPU and that PRU/RTU core. > No events have been added to the Tx_PRU cores at present. The > additions are done in the base k3-am64main.dtsi, and so are inherited > by all the K3 AM64x 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 > --- > This patch is based on linux-next tag next-20240423 > > arch/arm64/boot/dts/ti/k3-am64-main.dtsi | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > Acked-by: Ravi Gunasekaran Regards, Ravi