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 X-Spam-Level: X-Spam-Status: No, score=-6.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 193E2C433DF for ; Thu, 20 Aug 2020 16:27:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EB2D4207DE for ; Thu, 20 Aug 2020 16:27:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="es8IcqaQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729669AbgHTQ11 (ORCPT ); Thu, 20 Aug 2020 12:27:27 -0400 Received: from userp2120.oracle.com ([156.151.31.85]:46150 "EHLO userp2120.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727780AbgHTQ1Z (ORCPT ); Thu, 20 Aug 2020 12:27:25 -0400 Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 07KGN5Ng185569; Thu, 20 Aug 2020 16:27:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=corp-2020-01-29; bh=EhcIkdT5kS+atUJAy+/F2IziSwuZSev4/FziC9JMbe8=; b=es8IcqaQFxFBi8AOBf0kA9WnVstw9kZSFc/PyFOtBz+UWkIi7+UaU0ap4DkgJb91usSv H8seDxM3PiHpvM98191tO72kGt2d62EQYQ4B3Tbrl73uxugsOJhTTxasnZ7k4wqngt6p hBuCG1G+Rx0CGFvcj4/2GPoLjaoH6KUD/1+nfnc+OMRZvdMmnKn+F+wsiuFLt7y0Mfqj O95wqHhFLezeBP6BbwNNDjPIpgrgryE5Xlfs1DWjzoTr/4T5kkdbhYY+YHbKwJzlzF2e AGmv1p2TdlyaU3lIXloP2Q6BOE/oFOIeJ6EEEe/ap6VRhIkEAoh/x0RWSwk1VYW79TJk 1Q== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by userp2120.oracle.com with ESMTP id 32x8bnheph-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 20 Aug 2020 16:27:12 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 07KGN2tT109476; Thu, 20 Aug 2020 16:27:12 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userp3030.oracle.com with ESMTP id 32xsn1k4gv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Aug 2020 16:27:12 +0000 Received: from abhmp0018.oracle.com (abhmp0018.oracle.com [141.146.116.24]) by aserv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 07KGRAig010695; Thu, 20 Aug 2020 16:27:10 GMT Received: from [10.74.106.11] (/10.74.106.11) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 20 Aug 2020 09:27:10 -0700 Subject: Re: [PATCH 0/6] Add TI PRUSS platform driver To: Suman Anna , Grzegorz Jaszczyk , ssantosh@kernel.org, Tony Lindgren Cc: robh+dt@kernel.org, lee.jones@linaro.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, praneeth@ti.com References: <1596020528-19510-1-git-send-email-grzegorz.jaszczyk@linaro.org> <12a7fc2a-4c48-655f-daa1-880fd1866fd1@ti.com> From: santosh.shilimkar@oracle.com Organization: Oracle Corporation Message-ID: <2a64dcb7-d79e-7ef8-b3e6-4c2533a19c38@oracle.com> Date: Thu, 20 Aug 2020 09:27:08 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: <12a7fc2a-4c48-655f-daa1-880fd1866fd1@ti.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9718 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 spamscore=0 bulkscore=0 mlxlogscore=999 phishscore=0 mlxscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008200133 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9718 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 lowpriorityscore=0 impostorscore=0 suspectscore=0 adultscore=0 spamscore=0 malwarescore=0 mlxlogscore=999 priorityscore=1501 bulkscore=0 clxscore=1011 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008200133 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 8/20/20 7:43 AM, Suman Anna wrote: > Hi Santosh, Tony, > > On 7/29/20 6:02 AM, Grzegorz Jaszczyk wrote: >> Hi, >> >> The Programmable Real-Time Unit and Industrial Communication Subsystem >> (PRU-ICSS) is present on various TI SoCs. The IP is present on multiple TI SoC >> architecture families including the OMAP architecture SoCs such as AM33xx, >> AM437x and AM57xx; and on a Keystone 2 architecture based 66AK2G SoC. It is also >> present on the Davinci based OMAPL138 SoCs and K3 architecture based AM65x and >> J721E SoCs as well. >> >> A PRUSS consists of dual 32-bit RISC cores (Programmable Real-Time Units, or >> PRUs), shared RAM, data and instruction RAMs, some internal peripheral modules >> to facilitate industrial communication, and an interrupt controller. >> >> The programmable nature of the PRUs provide flexibility to implement custom >> peripheral interfaces, fast real-time responses, or specialized data handling. >> The common peripheral modules include the following, >> - an Ethernet MII_RT module with two MII ports >> - an MDIO port to control external Ethernet PHYs >> - an Industrial Ethernet Peripheral (IEP) to manage/generate Industrial >> Ethernet functions >> - an Enhanced Capture Module (eCAP) >> - an Industrial Ethernet Timer with 7/9 capture and 16 compare events >> - a 16550-compatible UART to support PROFIBUS >> - Enhanced GPIO with async capture and serial support >> >> >> A typical usage scenario would be to load the application firmware into one or >> more of the PRU cores, initialize one or more of the peripherals and perform I/O >> through shared RAM from either a kernel driver or directly from userspace. >> >> This series contains the PRUSS platform driver. This is the parent driver for >> the entire PRUSS and is used for managing the subsystem level resources like >> various memories and the CFG module. It is responsible for the creation and >> deletion of the platform devices for the child PRU devices and other child >> devices (like Interrupt Controller, MDIO node and some syscon nodes) so that >> they can be managed by specific platform drivers. >> >> Grzegorz Jaszczyk (1): >> dt-bindings: soc: ti: Add TI PRUSS bindings >> >> Suman Anna (5): >> soc: ti: pruss: Add a platform driver for PRUSS in TI SoCs >> soc: ti: pruss: Add support for PRU-ICSSs on AM437x SoCs >> soc: ti: pruss: Add support for PRU-ICSS subsystems on AM57xx SoCs >> soc: ti: pruss: Add support for PRU-ICSS subsystems on 66AK2G SoC >> soc: ti: pruss: enable support for ICSSG subsystems on K3 AM65x SoCs > > Do you have any comments on the driver portions of this series before Greg posts > a v2 addressing the binding comments. This is one of the foundation series > towards enabling PRUSS, and is a dependency for the PRU remoteproc driver. > No just post V2 addressing Rob's comment. I will line it up once rob acks it. Regards, Santosh