From patchwork Tue Sep 26 23:47:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 726482 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 03B094B234 for ; Tue, 26 Sep 2023 23:48:13 +0000 (UTC) Received: from gate2.alliedtelesis.co.nz (gate2.alliedtelesis.co.nz [202.36.163.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 044DD19A3 for ; Tue, 26 Sep 2023 16:48:10 -0700 (PDT) Received: from svr-chch-seg1.atlnz.lc (mmarshal3.atlnz.lc [10.32.18.43]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by gate2.alliedtelesis.co.nz (Postfix) with ESMTPS id 4CCF52C0526; Wed, 27 Sep 2023 12:48:08 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1695772088; bh=b75WKuP+3dUziG2rTJfVWwAGvRIdFNM7vfhk4HCV9Ek=; h=From:To:Cc:Subject:Date:From; b=ju6VS0VBNlA1OUCc9HW5b0DAexJKmQJUYnFhhNMF+Rp36liw+KMN3ZIWs4KEb/xdC iQD0F4yAH5AYvbrBfDYjoeM8xIO/y+7ohWn6prMXKnQIWopLmCfNZMx4UeBZuVpA5L oZ/ncGAgHQJXZ8nsDmkUo3gGhfR93zkArAr4Pl7tgC19qa1YGFi3d3yH93ov6XDxP2 BOl9/IPGsS+/l291J5YuZK/dtctXezls4cR5ArDeJCj1vqTvnlwIoHjrrOVy57VnkC 49gFQgGMdy3zxnF6+cXo13zd5HMjHIOFeXBGCMxJTZhj5Ke4wx3yY7ojEjuEFYN1BJ VCYT5HswjG4MQ== 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 ; Wed, 27 Sep 2023 12:48:08 +1300 Received: from chrisp-dl.ws.atlnz.lc (chrisp-dl.ws.atlnz.lc [10.33.22.30]) by pat.atlnz.lc (Postfix) with ESMTP id E8CC713EE32; Wed, 27 Sep 2023 12:48:07 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id E563328160F; Wed, 27 Sep 2023 12:48:07 +1300 (NZDT) From: Chris Packham To: gregory.clement@bootlin.com, andi.shyti@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, pierre.gondois@arm.com Cc: linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Chris Packham Subject: [PATCH 0/3] i2c: mv64xxx: Support for I2C unstuck Date: Wed, 27 Sep 2023 12:47:58 +1300 Message-ID: <20230926234801.4078042-1-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.42.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-SEG-SpamProfiler-Analysis: v=2.3 cv=fOpHIqSe c=1 sm=1 tr=0 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=zNV7Rl7Rt7sA:10 a=N-MdeIapwvzwuhZPf1QA:9 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, SPF_HELO_PASS,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Some newer Marvell SoCs natively support a recovery mechanisim. This can be used as an alternative to the generic pinctrl/GPIO recovery mechanism used on the older SoCs. Chris Packham (3): dt-bindings: i2c: mv64xxx: update bindings for unstuck register arm64: dts: marvell: AC5: use I2C unstuck function i2c: mv64xxx: add support for FSM based recovery .../bindings/i2c/marvell,mv64xxx-i2c.yaml | 5 +- arch/arm64/boot/dts/marvell/ac5-98dx25xx.dtsi | 14 ++-- drivers/i2c/busses/i2c-mv64xxx.c | 71 +++++++++++++++++-- 3 files changed, 75 insertions(+), 15 deletions(-)