Gigabeat S (imx31): Begin voltage and frequency scaling code. For now, to avoid overdrive voltage, just lower core voltage to 1.35V since voltage scaling shouldn't be required for frequencies lower than 399 MHz (according to Freescale BSP, which set all working points to 1.35V for those frequencies). Perhaps battery life will improve as well (cross fingers :).

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25506 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 46 insertions, 0 deletions

diff --git a/firmware/export/mc13783.h b/firmware/export/mc13783.h
index 09fb1f1fc4..0a83527c57 100644
--- a/firmware/export/mc13783.h
+++ b/firmware/export/mc13783.h
@@ -523,6 +523,52 @@ enum mc13783_regs_enum
 #define MC13783_SW2BSTBY                (0x3f << 12)
 #define MC13783_SW2BSTBY_POS            (12)
 
+/* Switcher Voltages (SWITCHERS0-SWITCHERS3) */
+/* Switcher 1 and 2 */
+#define MC13783_SW_0_900                0x00 /* 0.900 V */
+#define MC13783_SW_0_925                0x01 /* 0.925 V */
+#define MC13783_SW_0_950                0x02 /* 0.950 V */
+#define MC13783_SW_0_975                0x03 /* 0.975 V */
+#define MC13783_SW_1_000                0x04 /* 1.000 V */
+#define MC13783_SW_1_025                0x05 /* 1.025 V */
+#define MC13783_SW_1_050                0x06 /* 1.050 V */
+#define MC13783_SW_1_075                0x07 /* 1.075 V */
+#define MC13783_SW_1_100                0x08 /* 1.100 V */
+#define MC13783_SW_1_125                0x09 /* 1.125 V */
+#define MC13783_SW_1_150                0x0a /* 1.150 V */
+#define MC13783_SW_1_175                0x0b /* 1.175 V */
+#define MC13783_SW_1_200                0x0c /* 1.200 V */
+#define MC13783_SW_1_225                0x0d /* 1.225 V */
+#define MC13783_SW_1_250                0x0e /* 1.250 V */
+#define MC13783_SW_1_275                0x0f /* 1.275 V */
+#define MC13783_SW_1_300                0x10 /* 1.300 V */
+#define MC13783_SW_1_325                0x11 /* 1.325 V */
+#define MC13783_SW_1_350                0x12 /* 1.350 V */
+#define MC13783_SW_1_375                0x13 /* 1.375 V */
+#define MC13783_SW_1_400                0x14 /* 1.400 V */
+#define MC13783_SW_1_425                0x15 /* 1.425 V */
+#define MC13783_SW_1_450                0x16 /* 1.450 V */
+#define MC13783_SW_1_475                0x17 /* 1.475 V */
+#define MC13783_SW_1_500                0x18 /* 1.500 V */
+#define MC13783_SW_1_525                0x19 /* 1.525 V */
+#define MC13783_SW_1_550                0x1a /* 1.550 V */
+#define MC13783_SW_1_575                0x1b /* 1.575 V */
+#define MC13783_SW_1_600                0x1c /* 1.600 V */
+#define MC13783_SW_1_625                0x1d /* 1.625 V */
+#define MC13783_SW_1_650                0x1e /* 1.650 V */
+#define MC13783_SW_1_675                0x1f /* 1.675 V */
+#define MC13783_SW_1_700                0x20 /* 0x20 - 0x23 = 1.700V */
+#define MC13783_SW_1_800                0x24 /* 0x24 - 0x27 = 1.800V */
+/* Switcher 1 */
+#define MC13783_SW1_1_850               0x28 /* 0x29 - 0x2b = 1.850V */
+/* Switcher 2 */
+#define MC13783_SW2_1_900               0x28 /* 0x29 - 0x2b = 1.900V */
+/* Switcher 1 and 2 */
+#define MC13783_SW_2_000                0x2c /* 0x2c - 0x2f = 2.000V */
+#define MC13783_SW_2_100                0x30 /* 0x30 - 0x33 = 2.100V */
+#define MC13783_SW_2_200                0x34 /* 0x34 - 0x3f = 2.200V */
+
+
 /* SWITCHERS4 (28) */
 #define MC13783_SW1AMODE                (0x3 << 0)
     #define MC13783_SW1AMODE_OFF        (0x0 << 0)