armv8: ls1028ardb: enable DisplayPort Power support

Enable DP_PWR signal to power the DP to HDMI converter cable.
Signed-off-by: NWen He <wen.he_1@nxp.com>
Signed-off-by: NPriyanka Jain <priyanka.jain@nxp.com>

board/freescale/ls1028a/ls1028a.c

@@ -86,7 +86,19 @@ int board_init(void)
 	if (!i2c_get_chip_for_busnum(0, I2C_MUX_PCA_ADDR_PRI, 1, &dev))
 		dm_i2c_write(dev, 0x0b, &val, 1);
 #endif
+#endif
 
+#if defined(CONFIG_TARGET_LS1028ARDB)
+	u8 reg;
+
+	reg = QIXIS_READ(brdcfg[4]);
+	/*
+	 * Field | Function
+	 * 3     | DisplayPort Power Enable (net DP_PWR_EN):
+	 * DPPWR | 0= DP_PWR is enabled.
+	 */
+	reg &= ~(DP_PWD_EN_DEFAULT_MASK);
+	QIXIS_WRITE(brdcfg[4], reg);
 #endif
 	return 0;
 }

include/configs/ls1028a_common.h

@@ -210,6 +210,9 @@
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS	3
 #define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS	5
 
+/* DisplayPort */
+#define DP_PWD_EN_DEFAULT_MASK          0x8
+
 #ifdef CONFIG_NXP_ESBC
 #include <asm/fsl_secure_boot.h>
 #endif