ls1046ardb: cpld: add API for selecting core volt

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

board/freescale/ls1046ardb/cpld.c

@@ -82,6 +82,15 @@ void cpld_set_sd(void)
 
 	CPLD_WRITE(system_rst, 1);
 }
+
+void cpld_select_core_volt(bool en_0v9)
+{
+	u8 reg17 = en_0v9;
+
+	CPLD_WRITE(vdd_en, 1);
+	CPLD_WRITE(vdd_sel, reg17);
+}
+
 #ifdef DEBUG
 static void cpld_dump_regs(void)
 {

board/freescale/ls1046ardb/cpld.h

@@ -35,6 +35,7 @@ struct cpld_data {
 u8 cpld_read(unsigned int reg);
 void cpld_write(unsigned int reg, u8 value);
 void cpld_rev_bit(unsigned char *value);
+void cpld_select_core_volt(bool en_0v9);
 
 #define CPLD_READ(reg) cpld_read(offsetof(struct cpld_data, reg))
 #define CPLD_WRITE(reg, value)  \