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 B7675C87FCF for ; Thu, 7 Aug 2025 22:59:36 +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=qHunNEMGxpCcQqPo/qp2CxmR0lat3CX2feywSyaG5+A=; b=xeQleI2yybU6YnSsZDxIWcM2D0 ZLHTmeDtCqER4pGBWqzQ65682OHBUZnUaxib3SAcNMvZ1DrRjVJNuSfPkYr1PliL7+1inCWAn4mzn CCS2+gp8dsvSL/j/EUZCtX1e7mE8zuZxTWQx3tMpL4tY82+imm41P3ifz8U2H5298reclEw/YsLIp LkAzI3oNCVLllX3QIIyCp2w0+u+KICyLTWKvJdxlpnX07EA1guJY0GIuG+IN0OjJLmzUslFHu3g34 CevBFjOA74yoCQ1aJISo/UQUXDsspGflT1obzd1BXHElYdtPxlW7Pec9j+MBvE4hPkZIQPhk3DlXy 6gLGpEUw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1uk9a6-00000001fFs-2XmW; Thu, 07 Aug 2025 22:59:30 +0000 Received: from lelvem-ot01.ext.ti.com ([198.47.23.234]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1uk9Sf-00000001eOx-3JPn for linux-arm-kernel@lists.infradead.org; Thu, 07 Aug 2025 22:51:51 +0000 Received: from lelvem-sh01.itg.ti.com ([10.180.77.71]) by lelvem-ot01.ext.ti.com (8.15.2/8.15.2) with ESMTP id 577MpcNY455838; Thu, 7 Aug 2025 17:51:38 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1754607098; bh=qHunNEMGxpCcQqPo/qp2CxmR0lat3CX2feywSyaG5+A=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=ZGFygSQ19nfzaZcHmcJEhHBSPrCCy5/56d0EyYe+p+9DEl6dOoz7McobhFSPH8tgI DqD3zTFz3vPJ0LJ0rT+dLRSwX6Jd2cHj0NeNhPWE52+ssRDk6Ii6D1kfrBv5HBJH06 iMGb1e1PwouzvH8G1WY2B5wV/j8MfyYzsTtD74vo= Received: from DLEE113.ent.ti.com (dlee113.ent.ti.com [157.170.170.24]) by lelvem-sh01.itg.ti.com (8.18.1/8.18.1) with ESMTPS id 577MpcQm025953 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA256 bits=128 verify=FAIL); Thu, 7 Aug 2025 17:51:38 -0500 Received: from DLEE110.ent.ti.com (157.170.170.21) 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 15.1.2507.55; Thu, 7 Aug 2025 17:51:38 -0500 Received: from lelvem-mr05.itg.ti.com (10.180.75.9) by DLEE110.ent.ti.com (157.170.170.21) 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; Thu, 7 Aug 2025 17:51:38 -0500 Received: from judy-hp.dhcp.ti.com (judy-hp.dhcp.ti.com [128.247.81.105]) by lelvem-mr05.itg.ti.com (8.18.1/8.18.1) with ESMTP id 577MpcBl2086622; Thu, 7 Aug 2025 17:51:38 -0500 From: Judith Mendez To: Judith Mendez , Adrian Hunter , Ulf Hansson , Nishanth Menon , Santosh Shilimkar CC: , , , Andrew Davis Subject: [PATCH v2 2/2] mmc: sdhci_am654: Disable HS400 for AM62P SR1.0 and SR1.1 Date: Thu, 7 Aug 2025 17:51:38 -0500 Message-ID: <20250807225138.1228333-3-jm@ti.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250807225138.1228333-1-jm@ti.com> References: <20250807225138.1228333-1-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-20250807_155149_913594_FC64F484 X-CRM114-Status: GOOD ( 14.33 ) 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 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"); + host->mmc->caps2 &= ~(MMC_CAP2_HS400 | MMC_CAP2_HS400_ES); + } + ret = __sdhci_add_host(host); if (ret) goto err_cleanup_host; @@ -883,6 +891,12 @@ static int sdhci_am654_get_of_property(struct platform_device *pdev, return 0; } +static const struct soc_device_attribute sdhci_am654_descope_hs400[] = { + { .family = "AM62PX", .revision = "SR1.0" }, + { .family = "AM62PX", .revision = "SR1.1" }, + { /* sentinel */ } +}; + static const struct of_device_id sdhci_am654_of_match[] = { { .compatible = "ti,am654-sdhci-5.1", @@ -970,6 +984,10 @@ static int sdhci_am654_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "parsing dt failed\n"); + soc = soc_device_match(sdhci_am654_descope_hs400); + if (soc) + sdhci_am654->quirks |= SDHCI_AM654_QUIRK_DISABLE_HS400; + host->mmc_host_ops.start_signal_voltage_switch = sdhci_am654_start_signal_voltage_switch; host->mmc_host_ops.execute_tuning = sdhci_am654_execute_tuning; -- 2.49.0