zynq: sdhci: Define max clock by macro

zc1571 with silicon can operate on 200MHz maximum frequency. Setup this
frequency by default and fix setting for ep108.
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

drivers/mmc/zynq_sdhci.c

@@ -29,7 +29,7 @@ int zynq_sdhci_init(phys_addr_t regbase)
 		       SDHCI_QUIRK_BROKEN_R1B;
 	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 
-	add_sdhci(host, 52000000, 52000000 >> 9);
+	add_sdhci(host, CONFIG_ZYNQ_SDHCI_MAX_FREQ, 52000000 >> 9);
 	return 0;
 }
 

include/configs/xilinx_zynqmp.h

@@ -94,6 +94,9 @@
 # define CONFIG_SDHCI
 # define CONFIG_ZYNQ_SDHCI
 # define CONFIG_CMD_MMC
+# ifndef CONFIG_ZYNQ_SDHCI_MAX_FREQ
+#  define CONFIG_ZYNQ_SDHCI_MAX_FREQ	200000000
+# endif
 #endif
 
 #if defined(CONFIG_ZYNQ_SDHCI)

include/configs/xilinx_zynqmp_ep.h

@@ -19,6 +19,7 @@
 #define CONFIG_ZYNQ_GEM_PHY_ADDR0	7
 
 #define CONFIG_ZYNQ_SDHCI0
+#define CONFIG_ZYNQ_SDHCI_MAX_FREQ	52000000
 #define CONFIG_ZYNQ_I2C0
 #define CONFIG_SYS_I2C_ZYNQ
 #define CONFIG_ZYNQ_EEPROM

include/configs/zynq-common.h

@@ -105,6 +105,7 @@
 # define CONFIG_SDHCI
 # define CONFIG_ZYNQ_SDHCI
 # define CONFIG_CMD_MMC
+# define CONFIG_ZYNQ_SDHCI_MAX_FREQ	52000000
 #endif
 
 #ifdef CONFIG_ZYNQ_USB