sunxi: axp221: Disable dcdc4 on sun8i (A23)
authorHans de Goede <hdegoede@redhat.com>
Sat, 13 Dec 2014 13:20:09 +0000 (14:20 +0100)
committerHans de Goede <hdegoede@redhat.com>
Wed, 14 Jan 2015 13:56:37 +0000 (14:56 +0100)
dcdc4 is not used on sun8i, disable it.

While at it also add comments to the other fixed voltages to document what
they are used for.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
board/sunxi/board.c

index 5bf19b7aac9f460d032601ee2d68f81e6cd94984..7d6d075f145ee93d4e3463544b7ccd3694ec9771 100644 (file)
@@ -176,10 +176,14 @@ void sunxi_board_init(void)
 #ifdef CONFIG_AXP221_POWER
        power_failed = axp221_init();
        power_failed |= axp221_set_dcdc1(CONFIG_AXP221_DCDC1_VOLT);
-       power_failed |= axp221_set_dcdc2(1200);
-       power_failed |= axp221_set_dcdc3(1200);
-       power_failed |= axp221_set_dcdc4(1200);
-       power_failed |= axp221_set_dcdc5(1500);
+       power_failed |= axp221_set_dcdc2(1200); /* A31:VDD-GPU, A23:VDD-SYS */
+       power_failed |= axp221_set_dcdc3(1200); /* VDD-CPU */
+#ifdef CONFIG_MACH_SUN6I
+       power_failed |= axp221_set_dcdc4(1200); /* A31:VDD-SYS */
+#else
+       power_failed |= axp221_set_dcdc4(0);    /* A23:unused */
+#endif
+       power_failed |= axp221_set_dcdc5(1500); /* VCC-DRAM */
        power_failed |= axp221_set_dldo1(CONFIG_AXP221_DLDO1_VOLT);
        power_failed |= axp221_set_dldo4(CONFIG_AXP221_DLDO4_VOLT);
        power_failed |= axp221_set_aldo1(CONFIG_AXP221_ALDO1_VOLT);