linux-kernel - [PATCH v4 2/2] mmc: sdhci_am654: Add SDHCI_QUIRK2_SUPPRESS_V1P8

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Message-ID: <20250424180036.1541568-3-jm@ti.com>
Date: Thu, 24 Apr 2025 13:00:36 -0500
From: Judith Mendez <jm@...com>
To: Judith Mendez <jm@...com>, Adrian Hunter <adrian.hunter@...el.com>,
        Ulf
 Hansson <ulf.hansson@...aro.org>
CC: Josua Mayer <josua@...id-run.com>, <linux-mmc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Nishanth Menon <nm@...com>,
        Francesco Dolcini
	<francesco@...cini.it>,
        Hiago De Franco <hiagofranco@...il.com>, Moteen Shah
	<m-shah@...com>
Subject: [PATCH v4 2/2] mmc: sdhci_am654: Add SDHCI_QUIRK2_SUPPRESS_V1P8_ENA quirk to am62 compatible

Add a new struct for platform data for the ti,am62-sdhci compatible to
apply additional quirks, namely "SDHCI_QUIRK2_SUPPRESS_V1P8_ENA", to
host controllers with am62 compatible.

This fixes MMC init failures seen across am62x boards.

Fixes: ac5a41b472b4 ("Revert "mmc: sdhci_am654: Add sdhci_am654_start_signal_voltage_switch"")
Fixes: 941a7abd4666 ("mmc: sdhci_am654: Add sdhci_am654_start_signal_voltage_switch")
Cc: stable@...r.kernel.org
Suggested-by: Nishanth Menon <nm@...com>
Signed-off-by: Judith Mendez <jm@...com>
---
 drivers/mmc/host/sdhci_am654.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c
index f75c31815ab0..dd550587d48b 100644
--- a/drivers/mmc/host/sdhci_am654.c
+++ b/drivers/mmc/host/sdhci_am654.c
@@ -650,6 +650,18 @@ static const struct sdhci_am654_driver_data sdhci_j721e_4bit_drvdata = {
 	.flags = IOMUX_PRESENT,
 };
 
+static const struct sdhci_pltfm_data sdhci_am62_4bit_pdata = {
+	.ops = &sdhci_j721e_4bit_ops,
+	.quirks = SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12,
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
+		   SDHCI_QUIRK2_SUPPRESS_V1P8_ENA,
+};
+
+static const struct sdhci_am654_driver_data sdhci_am62_4bit_drvdata = {
+	.pdata = &sdhci_am62_4bit_pdata,
+	.flags = IOMUX_PRESENT,
+};
+
 static const struct soc_device_attribute sdhci_am654_devices[] = {
 	{ .family = "AM65X",
 	  .revision = "SR1.0",
@@ -872,7 +884,7 @@ static const struct of_device_id sdhci_am654_of_match[] = {
 	},
 	{
 		.compatible = "ti,am62-sdhci",
-		.data = &sdhci_j721e_4bit_drvdata,
+		.data = &sdhci_am62_4bit_drvdata,
 	},
 	{ /* sentinel */ }
 };
-- 
2.49.0