From patchwork Thu Apr 17 18:26:50 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Judith Mendez X-Patchwork-Id: 882525 Received: from lelvem-ot01.ext.ti.com (lelvem-ot01.ext.ti.com [198.47.23.234]) (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 EB260259CB9; Thu, 17 Apr 2025 18:27:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.23.234 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744914427; cv=none; b=ncPnUpK85J3NrnT1oirWAZTNKH584wV/96/hUoVl0RRywQqoPrPO63Zd2JhzYm87b6PWiQZCA2VV2t3TNUD3g7yAUGi2nkijuhYgNwW8bEmhDoX73Bi+5w3ApihDnZv0m5tywSR4UxUj3cGqyan1/+UHhRultGv0N2us5JsC0CQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744914427; c=relaxed/simple; bh=Tmk+mzEJSq3mj2aUVGUL+sKaA99E1w6Lryap8wVtALs=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=Y7zphvWR/4RVCD1AgarMSlqBVv04nqKN4S/eFxdOTOMvWUmtnDkKdragyPsQupuR3C66/Ti4NvmIEyJOej46FmlPLUlM20r4FhawH6e3F6vwQWW9vkVQ8lky47SALLDCh+X++SfSRlS4c/AuThldO7JNL60TMrs6cGwpnVAxwt0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=u98Q6GXQ; arc=none smtp.client-ip=198.47.23.234 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="u98Q6GXQ" Received: from fllv0035.itg.ti.com ([10.64.41.0]) by lelvem-ot01.ext.ti.com (8.15.2/8.15.2) with ESMTPS id 53HIQqBi082707 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 17 Apr 2025 13:26:52 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1744914412; bh=o5fcwYiVSrfnvYIPjwZFdGzKvA+Rhq/XfUgxUYDtTFs=; h=From:To:CC:Subject:Date; b=u98Q6GXQtX/VUJBQxXjKzS3j2CJL5fL2JaJY/f9LePPiCwGF0aw0exUeDT4PJHLqB eMWYodLZaH4SV0Q9yaf4VHcbGf+kMvkWZx8qcHnVQ0d0hri5bA/q/VLsehPh34qKOB jeOeGE9RYIc/PIF5bPPUmwVf+f+Zk7PBJ5akPkUM= Received: from DLEE112.ent.ti.com (dlee112.ent.ti.com [157.170.170.23]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 53HIQqXF062730 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 17 Apr 2025 13:26:52 -0500 Received: from DLEE103.ent.ti.com (157.170.170.33) 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; Thu, 17 Apr 2025 13:26:51 -0500 Received: from lelvsmtp5.itg.ti.com (10.180.75.250) by DLEE103.ent.ti.com (157.170.170.33) 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; Thu, 17 Apr 2025 13:26:52 -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 53HIQqh5078217; Thu, 17 Apr 2025 13:26:52 -0500 From: Judith Mendez To: Ulf Hansson , Adrian Hunter CC: Rob Herring , Krzysztof Kozlowski , Conor Dooley , , , , Josua Mayer , Moteen Shah , Francesco Dolcini , Hiago De Franco Subject: [PATCH v2 0/2] Fix V1P8_SIGNAL_ENA Date: Thu, 17 Apr 2025 13:26:50 -0500 Message-ID: <20250417182652.3521104-1-jm@ti.com> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-mmc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea There are eMMC boot failures seen with V1P8_SIGNAL_ENA on Kingston eMMC and variouse types of SD cards on Sitara K3 SoCs due to the sequencing when enumerating to HS200 mode. Since V1P8_SIGNAL_ENA is optional for eMMC, do not set V1P8_SIGNAL_ENA by default for eMMC. For SD cards we shall parse DT for ti,suppress-v1p8-ena property to determine whether to apply the quirk. This fix was previously merged in the kernel, but was reverted due to the "heuristics for enabling the quirk"[0]. This issue is adressed in this patch series by adding optional ti,suppress-v1p8-ena DT property to apply the quirk for SD. Changes since v1: - Drop patch for High_Speed_ENA - Add ti,suppress-v1p8-ena for SD cards - Add binding patch for ti,suppress-v1p8-ena - Update cover-letter/patch descriptions according to new changes [0] https://lore.kernel.org/linux-mmc/20250127-am654-mmc-regression-v2-1-9bb39fb12810@solid-run.com/ Judith Mendez (2): mmc: sdhci_am654: Add sdhci_am654_start_signal_voltage_switch dt-bindings: mmc: sdhci-am654: Add ti,suppress-v1p8-ena .../devicetree/bindings/mmc/sdhci-am654.yaml | 5 +++ drivers/mmc/host/sdhci_am654.c | 32 +++++++++++++++++++ 2 files changed, 37 insertions(+)