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 B9782C87FD2 for ; Fri, 8 Aug 2025 13:40:57 +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-Transfer-Encoding: Content-Type:In-Reply-To:From:References:CC:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=fY6ITv0IOCwAWvbopI78ay0Ho+0F53h/qZ6BsbQ7c3Q=; b=fJphH5nPC8MTj7hQ6wQmkBljvp ON0JNaWVZUG5TGjgPq6nemKn0Aqqp88kjSsuIXJtcVbsdjy/N0iBD/ixeECewxJjqdQJlF7H7c5WG MzhlTfQIF9Lcj8EpvBtjGjAKPecokkSUlXs9aGXfB2SvF5nZ6TiIHJW9PizIC5F+vl3KftKVzWm8E c2mljoXO4Su0RhlzcCiy0APZTegMD//nZ6ZJUE6apEPJVSNErtBvfNRBb6/q+EAYQQon7vcOTOlBs phcbxCE91ydjNxEEeKBaRWQhy+mePSzmq2+XwalmhtjibAcAzF9xJXHAJswvMRfRGA8IrEuNFA4X6 pJREGGaQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ukNL1-00000002wST-2bjn; Fri, 08 Aug 2025 13:40:51 +0000 Received: from fllvem-ot04.ext.ti.com ([198.47.19.246]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ukNIV-00000002wCz-09WD for linux-arm-kernel@lists.infradead.org; Fri, 08 Aug 2025 13:38:16 +0000 Received: from lelvem-sh01.itg.ti.com ([10.180.77.71]) by fllvem-ot04.ext.ti.com (8.15.2/8.15.2) with ESMTP id 578Dc9A8991745; Fri, 8 Aug 2025 08:38:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1754660289; bh=fY6ITv0IOCwAWvbopI78ay0Ho+0F53h/qZ6BsbQ7c3Q=; h=Date:Subject:To:CC:References:From:In-Reply-To; b=D3utI2E5WFPqamVWrVO4a81tSwdLi0z6mOuyh7BD0sJ/1z2h91QIRwCJetoQbOosH 0wNxxvKkaMDf1KPSgEy9X/7q+tIxDvs/w7brC8w/24O0bu6gQY4ANOJWLgEqJ1r28Q rVJIMxchuHyliXWThmBJRm4QQK97skudF8D4IpeA= Received: from DLEE112.ent.ti.com (dlee112.ent.ti.com [157.170.170.23]) by lelvem-sh01.itg.ti.com (8.18.1/8.18.1) with ESMTPS id 578Dc91U520915 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA256 bits=128 verify=FAIL); Fri, 8 Aug 2025 08:38:09 -0500 Received: from DLEE115.ent.ti.com (157.170.170.26) 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 15.1.2507.55; Fri, 8 Aug 2025 08:38:09 -0500 Received: from lelvem-mr05.itg.ti.com (10.180.75.9) by DLEE115.ent.ti.com (157.170.170.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.55 via Frontend Transport; Fri, 8 Aug 2025 08:38:08 -0500 Received: from [128.247.81.105] (judy-hp.dhcp.ti.com [128.247.81.105]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 578Dc8OD3118894; Fri, 8 Aug 2025 08:38:09 -0500 Message-ID: <16fac32a-a42a-4ec8-b0a2-3efe785af728@ti.com> Date: Fri, 8 Aug 2025 08:38:08 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] mmc: sdhci_am654: Disable HS400 for AM62P SR1.0 and SR1.1 To: Adrian Hunter , Ulf Hansson , Nishanth Menon , Santosh Shilimkar CC: , , , Andrew Davis References: <20250807225138.1228333-1-jm@ti.com> <20250807225138.1228333-3-jm@ti.com> Content-Language: en-US From: Judith Mendez In-Reply-To: <20250807225138.1228333-3-jm@ti.com> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-C2ProcessedOrg: 333ef613-75bf-4e12-a4b1-8e3623f5dcea X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250808_063815_357376_57DF34FC X-CRM114-Status: GOOD ( 17.72 ) 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 Hi all, On 8/7/25 5:51 PM, Judith Mendez wrote: > This adds SDHCI_AM654_QUIRK_DISABLE_HS400 quirk which shall be used > to disable HS400 support. AM62P SR1.0 and SR1.1 do not support HS400 > due to errata i2458 [0] so disable HS400 for these SoC revisions. > > [0] https://www.ti.com/lit/er/sprz574a/sprz574a.pdf > Signed-off-by: Judith Mendez > --- > drivers/mmc/host/sdhci_am654.c | 18 ++++++++++++++++++ > 1 file changed, 18 insertions(+) > > diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c > index e4fc345be7e5..dc4975514847 100644 > --- a/drivers/mmc/host/sdhci_am654.c > +++ b/drivers/mmc/host/sdhci_am654.c > @@ -156,6 +156,7 @@ struct sdhci_am654_data { > > #define SDHCI_AM654_QUIRK_FORCE_CDTEST BIT(0) > #define SDHCI_AM654_QUIRK_SUPPRESS_V1P8_ENA BIT(1) > +#define SDHCI_AM654_QUIRK_DISABLE_HS400 BIT(2) > }; > > struct window { > @@ -765,6 +766,7 @@ static int sdhci_am654_init(struct sdhci_host *host) > { > struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); > struct sdhci_am654_data *sdhci_am654 = sdhci_pltfm_priv(pltfm_host); > + struct device *dev = mmc_dev(host->mmc); > u32 ctl_cfg_2 = 0; > u32 mask; > u32 val; > @@ -820,6 +822,12 @@ static int sdhci_am654_init(struct sdhci_host *host) > if (ret) > goto err_cleanup_host; > > + if (sdhci_am654->quirks & SDHCI_AM654_QUIRK_DISABLE_HS400 && > + host->mmc->caps2 & (MMC_CAP2_HS400 | MMC_CAP2_HS400_ES)) { > + dev_err(dev, "Disable descoped HS400 mode for this silicon revision\n"); Forgot to switch to dev_info, so will respin the series one more time. Sorry for the noise. ~ Judith