mmc: sdhci-cadence: add Mobileye eyeQ support

[ Upstream commit 120ffe2 ]

The MMC/SDHCI controller implemented by Mobileye needs the preset value
quirks to configure the clock properly at speed slower than HS200.
It otherwise works as a standard sd4hc controller.

Signed-off-by: Benoît Monin <benoit.monin@bootlin.com>
Link: https://lore.kernel.org/r/e97f409650495791e07484589e1666ead570fa12.1750156323.git.benoit.monin@bootlin.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: benoitmonin

drivers/mmc/host/sdhci-cadence.c

@@ -433,6 +433,13 @@ static const struct sdhci_cdns_drv_data sdhci_elba_drv_data = {
 	},
 };
 
+static const struct sdhci_cdns_drv_data sdhci_eyeq_drv_data = {
+	.pltfm_data = {
+		.ops = &sdhci_cdns_ops,
+		.quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
+	},
+};
+
 static const struct sdhci_cdns_drv_data sdhci_cdns_drv_data = {
 	.pltfm_data = {
 		.ops = &sdhci_cdns_ops,
@@ -595,6 +602,10 @@ static const struct of_device_id sdhci_cdns_match[] = {
 		.compatible = "amd,pensando-elba-sd4hc",
 		.data = &sdhci_elba_drv_data,
 	},
+	{
+		.compatible = "mobileye,eyeq-sd4hc",
+		.data = &sdhci_eyeq_drv_data,
+	},
 	{ .compatible = "cdns,sd4hc" },
 	{ /* sentinel */ }
 };