From patchwork Tue Sep 26 23:47:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Packham X-Patchwork-Id: 726483 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 0105B4B20F 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 080631FE8 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 3607E2C04AB; 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=4djadmt2Z7kYAn+dgx4Dqa4/nGoiuXn4rvyEJGFX05o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mDXn0pJ+CKnZmP4ry4xyi4WJeGY0zzZudbrBM3EmpPqvWjdL8UOYoMB5rj9KXyvsW WOelT94oVUat4P6gcSBjXsDfIg0YqahvkkwB/lDvWtRSD1wXNO8oKjyCFxQTpWzJO6 r75hlllOru1gv401I5WC7Y121nmnl9W3HafyuZGlZvBCml1Rp/WHYxavp04V/sLeQu hCQCrTTBV//np2Ofpl+g3zaYCpE5hTo7XvsZG8fDeJQxKeGLCdGnv2+nggxHLSkXti 4uSl83In/DdHkWGo+CZtDE43VjUGymRcqT2HCQyu919D/m61thd3eMcE+bF+/ontse OPuRz5rCh3TSw== 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 EA2A513EE44; Wed, 27 Sep 2023 12:48:07 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id E73C92809A2; 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 1/3] dt-bindings: i2c: mv64xxx: update bindings for unstuck register Date: Wed, 27 Sep 2023 12:47:59 +1300 Message-ID: <20230926234801.4078042-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230926234801.4078042-1-chris.packham@alliedtelesis.co.nz> References: <20230926234801.4078042-1-chris.packham@alliedtelesis.co.nz> 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=b5Pq3k1ZBCuUTZ-Yr4IA: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=ham 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 support an "unstuck" function for I2C bus recovery. This is an alternative to the generic GPIO based recovery that the older SoCs use. The unstuck register falls outside of the usual address block for the I2C controller so requires an additional cell in the register property. This is optional and does not need to be supplied. Signed-off-by: Chris Packham --- .../devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml index 984fc1ed3ec6..461d1c9ee3f7 100644 --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml @@ -45,7 +45,10 @@ properties: auto-detects this and sets it appropriately. reg: - maxItems: 1 + minItems: 1 + items: + - description: I2C controller registers + - description: I2C unstuck register interrupts: maxItems: 1