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=-5.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_2 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 D2B93C433DB for ; Thu, 25 Mar 2021 14:47:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8F8F5619E4 for ; Thu, 25 Mar 2021 14:47:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230224AbhCYOrW (ORCPT ); Thu, 25 Mar 2021 10:47:22 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:42027 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230516AbhCYOqz (ORCPT ); Thu, 25 Mar 2021 10:46:55 -0400 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 12PEYBML098004; Thu, 25 Mar 2021 10:46:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=message-id : subject : from : to : cc : date : in-reply-to : references : content-type : mime-version : content-transfer-encoding; s=pp1; bh=hMRXH087zI/b5nC44YarlVd0OaxhzgeHqlahxSuBjMY=; b=nzUl5e5LD1HtLz7KcIo0gb02Ih4FsXy+eDaL2W+FwNH6agvw5gLUHJfZX+YWqNFZu0TM mzlz3tOOAWn+CyvGCht9Bi3xU4DmdTneAjUsPWa8v5i0ZQx5v/TW3uPZnkpXvMJBZOHx pgiucLeJb1Rlj6Y+ATRH5wBfablOkPPrKI4u7XPtlvcleoQjuHG8Xzwm7TI8jNlbjxi9 gyFjM3E6iFfr7VzvPgI5aM8n1MtI06NgfWFolaga5koIOfNdCh+FPZeoBas572O3DUb/ RFPdgJtr3Z+IGCX9AG3CM9mbQpy1Hjv24TkZF+bR578B7wu6+e8gcW2RA+jGaYrMQzh9 gQ== Received: from ppma02wdc.us.ibm.com (aa.5b.37a9.ip4.static.sl-reverse.com [169.55.91.170]) by mx0b-001b2d01.pphosted.com with ESMTP id 37gq0bahus-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Mar 2021 10:46:52 -0400 Received: from pps.filterd (ppma02wdc.us.ibm.com [127.0.0.1]) by ppma02wdc.us.ibm.com (8.16.0.43/8.16.0.43) with SMTP id 12PEYSuh008636; Thu, 25 Mar 2021 14:46:52 GMT Received: from b03cxnp08028.gho.boulder.ibm.com (b03cxnp08028.gho.boulder.ibm.com [9.17.130.20]) by ppma02wdc.us.ibm.com with ESMTP id 37d99rpean-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 25 Mar 2021 14:46:52 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp08028.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 12PEkpRA34537788 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 25 Mar 2021 14:46:51 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 86EDD136055; Thu, 25 Mar 2021 14:46:51 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3C5B2136060; Thu, 25 Mar 2021 14:46:51 +0000 (GMT) Received: from v0005c16 (unknown [9.211.54.31]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Thu, 25 Mar 2021 14:46:51 +0000 (GMT) Message-ID: Subject: Re: [PATCH] spi: fsi: Remove multiple sequenced ops for restricted chips From: Eddie James To: Mark Brown Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, joel@jms.id.au Date: Thu, 25 Mar 2021 09:46:50 -0500 In-Reply-To: <20210325135038.GA4620@sirena.org.uk> References: <20210324220516.41192-1-eajames@linux.ibm.com> <20210325135038.GA4620@sirena.org.uk> Organization: IBM Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 (3.28.5-14.el8) Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-03-25_03:2021-03-24,2021-03-25 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 adultscore=0 priorityscore=1501 suspectscore=0 mlxscore=0 malwarescore=0 mlxlogscore=835 phishscore=0 clxscore=1015 spamscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2103250109 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org On Thu, 2021-03-25 at 13:50 +0000, Mark Brown wrote: > On Wed, Mar 24, 2021 at 05:05:16PM -0500, Eddie James wrote: > > > Updated restricted chips have trouble processing multiple sequenced > > operations. So remove the capability to sequence multiple > > operations and > > reduce the maximum transfer size to 8 bytes. > > That's a very small limit, it would be nice to be able to identify > devices that can use the larger limit so they don't suffer > needlessly. Yes, this is only for the "restricted" controllers which are marked by a different compatible string. I guess the commit message isn't perfectly clear. Thanks, Eddie