linux-kernel - [PATCH 2/2] mmc: sdhci-of-k1: spacemit: Add support for K3 SoC

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Message-Id: <20260121-07-k3-mmc-v1-2-ff77c07bfdf6@kernel.org>
Date: Wed, 21 Jan 2026 15:27:36 +0800
From: Yixun Lan <dlan@...nel.org>
To: Ulf Hansson <ulf.hansson@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Adrian Hunter <adrian.hunter@...el.com>
Cc: Yixun Lan <dlan@...nel.org>, linux-mmc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org, 
 spacemit@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] mmc: sdhci-of-k1: spacemit: Add support for K3 SoC

The SDHCI controller found on SpacemiT K3 SoC share the same IP with K1
generation and introduce a compatible data to denote the change that broken
64BIT DMA issue has been fixed.

Signed-off-by: Yixun Lan <dlan@...nel.org>
---
 drivers/mmc/host/sdhci-of-k1.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci-of-k1.c b/drivers/mmc/host/sdhci-of-k1.c
index a160e1d5d9bd..a56cb8a36982 100644
--- a/drivers/mmc/host/sdhci-of-k1.c
+++ b/drivers/mmc/host/sdhci-of-k1.c
@@ -259,8 +259,20 @@ static const struct sdhci_pltfm_data spacemit_sdhci_k1_pdata = {
 		   SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
 };
 
+static const struct sdhci_pltfm_data spacemit_sdhci_k3_pdata = {
+	.ops = &spacemit_sdhci_ops,
+	.quirks = SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK |
+		  SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC |
+		  SDHCI_QUIRK_32BIT_ADMA_SIZE |
+		  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN |
+		  SDHCI_QUIRK_BROKEN_CARD_DETECTION |
+		  SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
+	.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+};
+
 static const struct of_device_id spacemit_sdhci_of_match[] = {
-	{ .compatible = "spacemit,k1-sdhci" },
+	{ .compatible = "spacemit,k1-sdhci", .data = &spacemit_sdhci_k1_pdata },
+	{ .compatible = "spacemit,k3-sdhci", .data = &spacemit_sdhci_k3_pdata },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, spacemit_sdhci_of_match);
@@ -271,10 +283,16 @@ static int spacemit_sdhci_probe(struct platform_device *pdev)
 	struct spacemit_sdhci_host *sdhst;
 	struct sdhci_pltfm_host *pltfm_host;
 	struct sdhci_host *host;
+	const struct sdhci_pltfm_data *data;
 	struct mmc_host_ops *mops;
 	int ret;
 
-	host = sdhci_pltfm_init(pdev, &spacemit_sdhci_k1_pdata, sizeof(*sdhst));
+
+	data = of_device_get_match_data(&pdev->dev);
+	if (!data)
+		return dev_err_probe(dev, -EINVAL, "failed to get platform data\n");
+
+	host = sdhci_pltfm_init(pdev, data, sizeof(*sdhst));
 	if (IS_ERR(host))
 		return PTR_ERR(host);
 

-- 
2.52.0