driver/ddr/fsl: Add a hook to update SPD address

In case SPD address changes between board revisions, updating SPD
address can be called from board file.

Signed-off-by: York Sun <yorksun at freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar at freescale.com>

drivers/ddr/fsl/main.c

@@ -135,6 +135,13 @@ static void __get_spd(generic_spd_eeprom_t *spd, u8 i2c_address)
 __attribute__((weak, alias("__get_spd")))
 void get_spd(generic_spd_eeprom_t *spd, u8 i2c_address);
 
+/* This function allows boards to update SPD address */
+__weak void update_spd_address(unsigned int ctrl_num,
+			       unsigned int slot,
+			       unsigned int *addr)
+{
+}
+
 void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
 		      unsigned int ctrl_num, unsigned int dimm_slots_per_ctrl)
 {
@@ -148,6 +155,7 @@ void fsl_ddr_get_spd(generic_spd_eeprom_t *ctrl_dimms_spd,
 
 	for (i = 0; i < dimm_slots_per_ctrl; i++) {
 		i2c_address = spd_i2c_addr[ctrl_num][i];
+		update_spd_address(ctrl_num, i, &i2c_address);
 		get_spd(&(ctrl_dimms_spd[i]), i2c_address);
 	}
 }

include/fsl_ddr.h

@@ -136,4 +136,7 @@ void fsl_ddr_set_memctl_regs(const fsl_ddr_cfg_regs_t *regs,
 int fsl_ddr_get_dimm_params(dimm_params_t *pdimm,
 			unsigned int controller_number,
 			unsigned int dimm_number);
+void update_spd_address(unsigned int ctrl_num,
+			unsigned int slot,
+			unsigned int *addr);
 #endif