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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41DAAC74A44 for ; Wed, 8 Mar 2023 11:38:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229814AbjCHLhm (ORCPT ); Wed, 8 Mar 2023 06:37:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230182AbjCHLhS (ORCPT ); Wed, 8 Mar 2023 06:37:18 -0500 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B483B9BFD; Wed, 8 Mar 2023 03:37:03 -0800 (PST) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 328Bav7r016709; Wed, 8 Mar 2023 05:36:57 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1678275417; bh=gw3v1EU0BElckaHwj1NxL18/TTUoPdYzshVSNuiDOtw=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=jwg2CsjJIBsrrOqkBaD7Ck18fdVAZLXQ7BKKXf8wGHccFLdD/+/adRtXYE72a5LuZ 4hQdF786KyVu82f1z5h1m5jYJvH9Ihx/d3vjzel9awbmRwluO+VsY911x44MTvUlbC 0XbCPSjs2MVMUrTb7HVcWHZH6SXg5emTkmTuWGRQ= Received: from DFLE108.ent.ti.com (dfle108.ent.ti.com [10.64.6.29]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 328BavSP067935 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 8 Mar 2023 05:36:57 -0600 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16; Wed, 8 Mar 2023 05:36:57 -0600 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.16 via Frontend Transport; Wed, 8 Mar 2023 05:36:57 -0600 Received: from [10.24.69.114] (ileaxei01-snat2.itg.ti.com [10.180.69.6]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 328Baq4S121331; Wed, 8 Mar 2023 05:36:53 -0600 Message-ID: Date: Wed, 8 Mar 2023 17:06:52 +0530 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.1 Subject: Re: [EXTERNAL] Re: [PATCH v3 3/6] soc: ti: pruss: Add pruss_cfg_read()/update() API Content-Language: en-US To: Roger Quadros , MD Danish Anwar , "Andrew F. Davis" , Suman Anna , Vignesh Raghavendra , Mathieu Poirier , Bjorn Andersson , Santosh Shilimkar , Nishanth Menon CC: , , , , , , References: <20230306110934.2736465-1-danishanwar@ti.com> <20230306110934.2736465-4-danishanwar@ti.com> <7076208d-7dca-6980-5399-498e55648740@kernel.org> From: Md Danish Anwar Organization: Texas Instruments In-Reply-To: <7076208d-7dca-6980-5399-498e55648740@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Roger, On 08/03/23 13:57, Roger Quadros wrote: > Hi, > > On 06/03/2023 13:09, MD Danish Anwar wrote: >> From: Suman Anna >> >> Add two new generic API pruss_cfg_read() and pruss_cfg_update() to >> the PRUSS platform driver to allow other drivers to read and program >> respectively a register within the PRUSS CFG sub-module represented >> by a syscon driver. This interface provides a simple way for client > > Do you really need these 2 functions to be public? > I see that later patches (4-6) add APIs for doing specific things > and that should be sufficient than exposing entire CFG space via > pruss_cfg_read/update(). > > I think the intention here is to keep this APIs pruss_cfg_read() and pruss_cfg_update() public so that other drivers can read / modify PRUSS config when needed. The later patches (4-6) add APIs to do specific thing, but those APIs also eventually call pruss_cfg_read/update(). >> drivers without having them to include and parse the CFG syscon node >> within their respective device nodes. Various useful registers and >> macros for certain register bit-fields and their values have also >> been added. >> >> It is the responsibility of the client drivers to reconfigure or >> reset a particular register upon any failures. >> >> Signed-off-by: Suman Anna >> Co-developed-by: Grzegorz Jaszczyk >> Signed-off-by: Grzegorz Jaszczyk >> Signed-off-by: Puranjay Mohan >> --- >> drivers/soc/ti/pruss.c | 41 +++++++++++++ >> include/linux/remoteproc/pruss.h | 102 +++++++++++++++++++++++++++++++ >> 2 files changed, 143 insertions(+) >> >> diff --git a/drivers/soc/ti/pruss.c b/drivers/soc/ti/pruss.c >> index c8053c0d735f..537a3910ffd8 100644 >> --- a/drivers/soc/ti/pruss.c >> +++ b/drivers/soc/ti/pruss.c >> @@ -164,6 +164,47 @@ int pruss_release_mem_region(struct pruss *pruss, >> } >> EXPORT_SYMBOL_GPL(pruss_release_mem_region); > > cheers, > -roger -- Thanks and Regards, Danish.