son: spl change soc voltage to .9V

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

board/boundary/son/spl.c

@@ -146,21 +146,30 @@ int power_init_boundary(void)
 
 	i2c_set_bus_num(0);
 #define PF8100	0x08
+#define SW1_VOLT	0x51
 #define SW2_VOLT	0x59
 #define SW3_CONFIG2	0x5e
 #define SW3_VOLT	0x61
 #define SW4_CONFIG2	0x66
 #define SW4_VOLT	0x69
 #define SW5_VOLT	0x71
+#define SW6_VOLT	0x79
 
-	buf[0] = 0x50;	/* (.90-.4)*160=.50*160=80=0x50  80/160+.4=.90 dram/arm */
+	buf[0] = 0x50;	/* (.90-.4)*160=.50*160=80=0x50  80/160+.4=.90 */
+	/* dram */
 	ret = i2c_write(PF8100, SW2_VOLT, 1, buf, 1);
 	if (ret)
 		return ret;
+	/* aux_0p9 */
 	ret = i2c_write(PF8100, SW4_VOLT, 1, buf, 1);
 	if (ret)
 		return ret;
+	/* arm */
 	ret = i2c_write(PF8100, SW3_VOLT, 1, buf, 1);
+	if (ret)
+		return ret;
+	/* soc */
+	ret = i2c_write(PF8100, SW1_VOLT, 1, buf, 1);
 	if (ret)
 		return ret;
 	/*
@@ -173,9 +182,14 @@ int power_init_boundary(void)
 		ret = i2c_write(PF8100, SW3_CONFIG2, 1, buf, 1);
 	}
 
-	buf[0] = 0x50;	/* (.90-.4)*160=.50*160=80=0x50  80/160+.4=.90 vpu/gpu */
+	/* vpu/gpu */
+	buf[0] = 0x50;	/* (.90-.4)*160=.50*160=80=0x50  80/160+.4=.90 */
 	ret = i2c_write(PF8100, SW5_VOLT, 1, buf, 1);
 
+	/* DRAM_1P1V */
+	buf[0] = 0x70;	/* (1.10-.4)*160=.70*160=112=0x70  112/160+.4=1.10 */
+	ret = i2c_write(PF8100, SW6_VOLT, 1, buf, 1);
+
 	gpio_request(GP_USDHC2_VSEL, "usdhc2_vsel");
 	gpio_direction_output(GP_USDHC2_VSEL, 0);
 	return ret;