From nobody Sat Jan 3 04:16:52 2026 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 61FF3E92FD0 for ; Fri, 6 Oct 2023 00:34:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229595AbjJFAdk (ORCPT ); Thu, 5 Oct 2023 20:33:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229519AbjJFAdf (ORCPT ); Thu, 5 Oct 2023 20:33:35 -0400 Received: from gate2.alliedtelesis.co.nz (gate2.alliedtelesis.co.nz [IPv6:2001:df5:b000:5::4]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EE74BED for ; Thu, 5 Oct 2023 17:33:31 -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 A32C72C0596; Fri, 6 Oct 2023 13:33:28 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1696552408; bh=z5Ulpz8hd9vRm5+9CQamJ7SN/jCUcsm99YX0+edYC84=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=flpVkiNZ2Mbuwhghchke+/kIOzBtei53ZV196V1GjIMuz+Brr+eK/we8msd10s/sB QEGujQTkOxI/0baKZaukM1XkT047fXn9Aautey56HH8EtlXaVoApT1KzOyosvNq1LG iFljC59C8fme9o54MXLY9warFsGSZ7LoZy/LMyF0jA/KrLMHyDCdTBNBlup0weel5r RfB1DthM8L6Ibwgkm3uVDJGZJ3bCbdljjtP7pDMXQKSu89GD2nVNtjVVm/G/9R27aG qoeieHh4qQV0jZDTULljMR/bLFCT0yOCsrlAOUh9lUDud0u/Gh0FQCpD15LKW17QFG kUMgYHrVUHXnQ== 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, 06 Oct 2023 13:33:28 +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 586D213EE4D; Fri, 6 Oct 2023 13:33:28 +1300 (NZDT) Received: by chrisp-dl.ws.atlnz.lc (Postfix, from userid 1030) id 560A92804C0; Fri, 6 Oct 2023 13:33:28 +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 v2 1/3] dt-bindings: i2c: mv64xxx: update bindings for unstuck register Date: Fri, 6 Oct 2023 13:33:19 +1300 Message-ID: <20231006003321.2100016-2-chris.packham@alliedtelesis.co.nz> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231006003321.2100016-1-chris.packham@alliedtelesis.co.nz> References: <20231006003321.2100016-1-chris.packham@alliedtelesis.co.nz> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-SEG-SpamProfiler-Analysis: v=2.3 cv=Vf2Jw2h9 c=1 sm=1 tr=0 a=KLBiSEs5mFS1a/PbTCJxuA==:117 a=bhdUkHdE2iEA:10 a=XYAwZIGsAAAA:8 a=b5Pq3k1ZBCuUTZ-Yr4IA:9 a=E8ToXWR_bxluHZ7gmE-Z:22 X-SEG-SpamProfiler-Score: 0 x-atlnz-ls: pat Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" 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 Acked-by: Conor Dooley --- Notes: Changes in v2: - Collect ack from Conor .../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. =20 reg: - maxItems: 1 + minItems: 1 + items: + - description: I2C controller registers + - description: I2C unstuck register =20 interrupts: maxItems: 1 --=20 2.42.0