mmc: rockchip_sdhci: Add support for RK3576

Add support for RK3576 to the rockchip sdhci driver.

It's pretty similar to its cousins found in the RK3568 and RK3588 and the
specific hs400-tx-tap number was taken from the vendor-u-boot.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index c0f9867..761e361 100644
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -682,6 +682,17 @@
 	.ddr50_strbin_delay_num = DLL_STRBIN_DELAY_NUM_DEFAULT,
 };
 
+static const struct sdhci_data rk3576_data = {
+	.set_ios_post = rk3568_sdhci_set_ios_post,
+	.set_clock = rk3568_sdhci_set_clock,
+	.config_dll = rk3568_sdhci_config_dll,
+	.hs200_txclk_tapnum = DLL_TXCLK_TAPNUM_DEFAULT,
+	.hs400_txclk_tapnum = 0x7,
+	.hs400_cmdout_tapnum = 0x7,
+	.hs400_strbin_tapnum = 0x5,
+	.ddr50_strbin_delay_num = 0xa,
+};
+
 static const struct sdhci_data rk3588_data = {
 	.set_ios_post = rk3568_sdhci_set_ios_post,
 	.set_clock = rk3568_sdhci_set_clock,
@@ -707,6 +718,10 @@
 		.data = (ulong)&rk3568_data,
 	},
 	{
+		.compatible = "rockchip,rk3576-dwcmshc",
+		.data = (ulong)&rk3576_data,
+	},
+	{
 		.compatible = "rockchip,rk3588-dwcmshc",
 		.data = (ulong)&rk3588_data,
 	},