make voltages and brownout levels configurable

diff --git a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
index 9d98811fd81c89dd319d722d53141e90a756515e..cafc580ef3dff590b810df2ffaf4776c6bd3f098 100644 (file)
--- a/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mx28/spl_power_init.c
@@ -30,6 +30,58 @@
 
 #include "mx28_init.h"
 
+#ifdef CONFIG_SYS_SPL_VDDD_VAL
+#define VDDD_VAL       CONFIG_SYS_SPL_VDDD_VAL
+#else
+#define VDDD_VAL       1350
+#endif
+#ifdef CONFIG_SYS_SPL_VDDIO_VAL
+#define VDDIO_VAL      CONFIG_SYS_SPL_VDDIO_VAL
+#else
+#define VDDIO_VAL      3300
+#endif
+#ifdef CONFIG_SYS_SPL_VDDA_VAL
+#define VDDA_VAL       CONFIG_SYS_SPL_VDDA_VAL
+#else
+#define VDDA_VAL       1800
+#endif
+#ifdef CONFIG_SYS_SPL_VDDMEM_VAL
+#define VDDMEM_VAL     CONFIG_SYS_SPL_VDDMEM_VAL
+#else
+#define VDDMEM_VAL     1500
+#endif
+
+#ifdef CONFIG_SYS_SPL_VDDD_BO_VAL
+#define VDDD_BO_VAL    CONFIG_SYS_SPL_VDDD_BO_VAL
+#else
+#define VDDD_BO_VAL    150
+#endif
+#ifdef CONFIG_SYS_SPL_VDDIO_BO_VAL
+#define VDDIO_BO_VAL   CONFIG_SYS_SPL_VDDIO_BO_VAL
+#else
+#define VDDIO_BO_VAL   150
+#endif
+#ifdef CONFIG_SYS_SPL_VDDA_BO_VAL
+#define VDDA_BO_VAL    CONFIG_SYS_SPL_VDDA_BO_VAL
+#else
+#define VDDA_BO_VAL    175
+#endif
+#ifdef CONFIG_SYS_SPL_VDDMEM_BO_VAL
+#define VDDMEM_BO_VAL  CONFIG_SYS_SPL_VDDMEM_BO_VAL
+#else
+#define VDDMEM_BO_VAL  25
+#endif
+
+#ifdef CONFIG_SYS_SPL_BATT_BO_LEVEL
+#if CONFIG_SYS_SPL_BATT_BO_LEVEL < 2400 || CONFIG_SYS_SPL_BATT_BO_LEVEL > 3640
+#error CONFIG_SYS_SPL_BATT_BO_LEVEL out of range
+#endif
+#define BATT_BO_VAL    (((CONFIG_SYS_SPL_BATT_BO_LEVEL) - 2400) / 40)
+#else
+/* Brownout default at 3V */
+#define BATT_BO_VAL    ((3000 - 2400) / 40)
+#endif
+
 static struct mx28_power_regs *power_regs = (void *)MXS_POWER_BASE;
 
 static void mx28_power_clock2xtal(void)
@@ -497,11 +549,9 @@ static void mx28_5v_boot(void)
 
 static void mx28_init_batt_bo(void)
 {
-
-       /* Brownout at 3V */
        clrsetbits_le32(&power_regs->hw_power_battmonitor,
                POWER_BATTMONITOR_BRWNOUT_LVL_MASK,
-               15 << POWER_BATTMONITOR_BRWNOUT_LVL_OFFSET);
+               BATT_BO_VAL << POWER_BATTMONITOR_BRWNOUT_LVL_OFFSET);
 
        writel(POWER_CTRL_BATT_BO_IRQ, &power_regs->hw_power_ctrl_clr);
        writel(POWER_CTRL_ENIRQ_BATT_BO, &power_regs->hw_power_ctrl_clr);
@@ -832,9 +882,10 @@ void mx28_power_init(void)
        mx28_power_configure_power_source();
        mx28_enable_output_rail_protection();
 
-       mx28_power_set_vddio(3300, 3150);
+       mx28_power_set_vddio(VDDIO_VAL, VDDIO_BO_VAL);
+
+       mx28_power_set_vddd(VDDD_VAL, VDDD_BO_VAL);
 
-       mx28_power_set_vddd(1350, 1200);
 
        writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
                POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ |