linux-kernel - [PATCH v1 1/1] mmc: sdhci-of-dwcmshc: enable host V4 support for BlueField-3 SoC

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Message-ID: <990885f566c32ac8e6888ad6b434fb70d1a5d7af.1673460632.git.limings@nvidia.com>
Date:   Wed, 11 Jan 2023 13:14:58 -0500
From:   Liming Sun <limings@...dia.com>
To:     Adrian Hunter <adrian.hunter@...el.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        David Woods <davwoods@...dia.com>,
        Shawn Lin <shawn.lin@...k-chips.com>
CC:     Liming Sun <limings@...dia.com>, <linux-mmc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v1 1/1] mmc: sdhci-of-dwcmshc: enable host V4 support for BlueField-3 SoC

This commit enables SDHCI Host V4 support on Bluefield-3 SoC to be
consistent with the default setting in firmware(UEFI).

Reviewed-by: David Woods <davwoods@...dia.com>
Signed-off-by: Liming Sun <limings@...dia.com>
---
 drivers/mmc/host/sdhci-of-dwcmshc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index a7343d4bc50e..49338670c89f 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -528,6 +528,11 @@ static int dwcmshc_probe(struct platform_device *pdev)
 			goto err_clk;
 	}
 
+#ifdef CONFIG_ACPI
+	if (pltfm_data == &sdhci_dwcmshc_bf3_pdata)
+		sdhci_enable_v4_mode(host);
+#endif
+
 	host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
 
 	err = sdhci_setup_host(host);
-- 
2.30.1