From patchwork Fri May 7 00:40:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 432308 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 D3E25C433ED for ; Fri, 7 May 2021 00:40:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD006613C8 for ; Fri, 7 May 2021 00:40:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229769AbhEGAlu (ORCPT ); Thu, 6 May 2021 20:41:50 -0400 Received: from gate2.alliedtelesis.co.nz ([202.36.163.20]:41787 "EHLO gate2.alliedtelesis.co.nz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233780AbhEGAlu (ORCPT ); Thu, 6 May 2021 20:41:50 -0400 Received: from svr-chch-seg1.atlnz.lc (mmarshal3.atlnz.lc [10.32.18.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by gate2.alliedtelesis.co.nz (Postfix) with ESMTPS id D91B0891AD; Fri, 7 May 2021 12:40:48 +1200 (NZST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1620348048; bh=47/c17VIj6d/N+J2xs5Gz7yzioMSYApf0E6Fif/tnbc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=UV7dYDYFqGPmIpGXW9D5+6osHWvQA7WJ3REUE3YVV/bR5f4OpNVxpfOtaXMklPwOB t1vdbOhIELrHvPr9PKVZRzaLcPyiw8zsJ15EL60e6gs6c/BJYPO/BCFo/b+JbyrX/2 Mg+w/HIHOoo4HoMnf+Rr0MOcgjbdxc/LaMmCv2MCpmohauuSsCuCV7VopNBAzMxQ1I mBs/CHLPCS0HhPREzoJmW6eA8UeRggO1Z/BdBAFpuJxz8Bizb9zzcn4bdNBAcmXuUl F6DleIV8PoZ9g4I/XgjmkLAIc4k1tyqJH3dzXuAU56UCID43ZCSMC/vw7s29JpnjM/ VpG/q46XjkUaQ== Received: from pat.atlnz.lc (Not Verified[10.32.16.33]) by svr-chch-seg1.atlnz.lc with Trustwave SEG (v8, 2, 6, 11305) id ; Fri, 07 May 2021 12:40:48 +1200 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.20]) by pat.atlnz.lc (Postfix) with ESMTP id B96B013ECA5; Fri, 7 May 2021 12:40:48 +1200 (NZST) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id B46CC283A61; Fri, 7 May 2021 12:40:48 +1200 (NZST) From: Chris Packham To: wsa@kernel.org, andriy.shevchenko@linux.intel.com, andy.shevchenko@gmail.com, robh+dt@kernel.org, mpe@ellerman.id.au Cc: linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Chris Packham Subject: [PATCH v2 1/3] dt-bindings: i2c: mpc: Add fsl, i2c-erratum-a004447 flag Date: Fri, 7 May 2021 12:40:45 +1200 Message-Id: <20210507004047.4454-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210507004047.4454-1-chris.packham@alliedtelesis.co.nz> References: <20210507004047.4454-1-chris.packham@alliedtelesis.co.nz> MIME-Version: 1.0 X-SEG-SpamProfiler-Analysis: v=2.3 cv=K6Jc4BeI c=1 sm=1 tr=0 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=5FLXtPjwQuUA:10 a=3WbeyVfOhAup7pk4KgsA:9 X-SEG-SpamProfiler-Score: 0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Document the fsl,i2c-erratum-a004447 flag which indicates the presence of an i2c erratum on some QorIQ SoCs. Signed-off-by: Chris Packham Acked-by: Rob Herring --- Documentation/devicetree/bindings/i2c/i2c-mpc.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml b/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml index 7b553d559c83..98c6fcf7bf26 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-mpc.yaml @@ -46,6 +46,13 @@ properties: description: | I2C bus timeout in microseconds + fsl,i2c-erratum-a004447: + $ref: /schemas/types.yaml#/definitions/flag + description: | + Indicates the presence of QorIQ erratum A-004447, which + says that the standard i2c recovery scheme mechanism does + not work and an alternate implementation is needed. + required: - compatible - reg