mmc: sdhci-of-arasan: Add Support for Intel LGM eMMC

The current arasan sdhci PHY configuration isn't compatible
with the PHY on Intel's LGM(Lightning Mountain) SoC devices.

Therefore, add a new compatible, to adapt the Intel's LGM
eMMC PHY with arasan-sdhc controller to configure the PHY.

Signed-off-by: Ramuthevar Vadivel Muruganx <vadivel.muruganx.ramuthevar@linux.intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/mmc/host/sdhci-of-arasan.c

@@ -114,6 +114,12 @@ static const struct sdhci_arasan_soc_ctl_map rk3399_soc_ctl_map = {
 	.hiword_update = true,
 };
 
+static const struct sdhci_arasan_soc_ctl_map intel_lgm_emmc_soc_ctl_map = {
+	.baseclkfreq = { .reg = 0xa0, .width = 8, .shift = 2 },
+	.clockmultiplier = { .reg = 0, .width = -1, .shift = -1 },
+	.hiword_update = false,
+};
+
 /**
  * sdhci_arasan_syscon_write - Write to a field in soc_ctl registers
  *
@@ -373,6 +379,11 @@ static struct sdhci_arasan_of_data sdhci_arasan_rk3399_data = {
 	.pdata = &sdhci_arasan_cqe_pdata,
 };
 
+static struct sdhci_arasan_of_data intel_lgm_emmc_data = {
+	.soc_ctl_map = &intel_lgm_emmc_soc_ctl_map,
+	.pdata = &sdhci_arasan_cqe_pdata,
+};
+
 #ifdef CONFIG_PM_SLEEP
 /**
  * sdhci_arasan_suspend - Suspend method for the driver
@@ -474,6 +485,10 @@ static const struct of_device_id sdhci_arasan_of_match[] = {
 		.compatible = "rockchip,rk3399-sdhci-5.1",
 		.data = &sdhci_arasan_rk3399_data,
 	},
+	{
+		.compatible = "intel,lgm-sdhci-5.1-emmc",
+		.data = &intel_lgm_emmc_data,
+	},
 	/* Generic compatible below here */
 	{
 		.compatible = "arasan,sdhci-8.9a",