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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2F5F6C369C2 for ; Tue, 22 Apr 2025 22:09:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=3W5pH2V1gyiEOmWsKa66R87bP2YeuD/Oj8gx8MCibcM=; b=oBaSkRZT4hqm0GgZKRzxql9OIW BtICIDfGISH5Y96rrMi6aPjrphfDt1lICJMM85EC+3JidNUJJxqDJDFaJTuMOVVLIZF5zd20oRzOq a894q1S1AV1Eqr4MHQgaCOrNDH0seK0c/pVBQ/zp4eALNgJKBnFh6hDvTWXiF+g+HCYEEg247T1lH nk3hvwGT/19/HXx/4eXBrEjn7OnX99Xwlbsdo0PRfVHo0tn15ntFv/GlefE3at/erl0FRhh152dar csIFMo73y2JjLqt8PZOYBJk7ld9m9x3HjhGoIdPE32a8VM6XkbIyl0mtK+4dYAx9nQKxiibDj3QD2 NnqurlZg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7Lnm-00000008ft9-0jwD; Tue, 22 Apr 2025 22:09:14 +0000 Received: from fllvem-ot03.ext.ti.com ([198.47.19.245]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u7Lk3-00000008fCy-2YVh for linux-arm-kernel@lists.infradead.org; Tue, 22 Apr 2025 22:05:25 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllvem-ot03.ext.ti.com (8.15.2/8.15.2) with ESMTPS id 53MM5DdF1337961 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 22 Apr 2025 17:05:13 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1745359513; bh=3W5pH2V1gyiEOmWsKa66R87bP2YeuD/Oj8gx8MCibcM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=DyI8XAi1phnkKYoqwloERIFC1u+isT1WfT8OvtCBOAF1eEXeq2ZgoB7kfjjDeADiY zb1ZDk++JcsLdyYcxKeX+QyH5wLPV5RvAjzD32CmZNw/ZyGDz93SCT4wUvLzf4e7zz NuxwUgs5jNHim2bVOO5TEVF01/tygQ+kDVYVE2ws= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 53MM5CGQ117245 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 22 Apr 2025 17:05:12 -0500 Received: from DLEE112.ent.ti.com (157.170.170.23) by DLEE113.ent.ti.com (157.170.170.24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Tue, 22 Apr 2025 17:05:12 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DLEE112.ent.ti.com (157.170.170.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Tue, 22 Apr 2025 17:05:12 -0500 Received: from judy-hp.dhcp.ti.com (judy-hp.dhcp.ti.com [128.247.81.105]) by lelvsmtp5.itg.ti.com (8.15.2/8.15.2) with ESMTP id 53MM5Crd012605; Tue, 22 Apr 2025 17:05:12 -0500 From: Judith Mendez To: Judith Mendez , Ulf Hansson , Nishanth Menon , Adrian Hunter CC: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vignesh Raghavendra , Tero Kristo , Josua Mayer , , , , , Francesco Dolcini , Hiago De Franco , Moteen Shah , Subject: [PATCH RESEND v3 1/3] dt-bindings: mmc: sdhci-am654: Add ti,suppress-v1p8-ena Date: Tue, 22 Apr 2025 17:05:10 -0500 Message-ID: <20250422220512.297396-2-jm@ti.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250422220512.297396-1-jm@ti.com> References: <20250422220512.297396-1-jm@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250422_150523_837255_5A6C320A X-CRM114-Status: GOOD ( 10.94 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some Microcenter/Patriot SD cards and Kingston eMMC are failing init across Sitara K3 boards. Init failure is due to the sequence when V1P8_SIGNAL_ENA is set. The V1P8_SIGNAL_ENA has a timing component tied to it where if set, switch to full-cycle timing happens. The failing cards do not like change to full-cycle timing before changing bus width, so add flag to sdhci-am654 binding to suppress V1P8_SIGNAL_ENA before changing bus width. The switch to full-cycle timing should happen with HIGH_SPEED_ENA after change of bus width. Signed-off-by: Judith Mendez --- Documentation/devicetree/bindings/mmc/sdhci-am654.yaml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/sdhci-am654.yaml b/Documentation/devicetree/bindings/mmc/sdhci-am654.yaml index 676a74695389..0f92bbf8e13b 100644 --- a/Documentation/devicetree/bindings/mmc/sdhci-am654.yaml +++ b/Documentation/devicetree/bindings/mmc/sdhci-am654.yaml @@ -201,6 +201,11 @@ properties: and the controller is required to be forced into Test mode to set the TESTCD bit. + ti,suppress-v1p8-ena: + $ref: /schemas/types.yaml#/definitions/flag + description: + When present, V1P8_SIGNAL_ENA shall be suppressed. + required: - compatible - reg -- 2.49.0