#include "mx28_init.h"
-void mx28_power_clock2xtal(void)
+#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
+
+#ifdef CONFIG_SYS_SPL_FIXED_BATT_SUPPLY
+static const int fixed_batt_supply = 1;
+#else
+static const int fixed_batt_supply;
+#endif
+
+static struct mx28_power_regs *power_regs = (void *)MXS_POWER_BASE;
+
+static void mx28_power_clock2xtal(void)
{
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
&clkctrl_regs->hw_clkctrl_clkseq_set);
}
-void mx28_power_clock2pll(void)
+static void mx28_power_clock2pll(void)
{
struct mx28_clkctrl_regs *clkctrl_regs =
(struct mx28_clkctrl_regs *)MXS_CLKCTRL_BASE;
- writel(CLKCTRL_PLL0CTRL0_POWER,
- &clkctrl_regs->hw_clkctrl_pll0ctrl0_set);
+ setbits_le32(&clkctrl_regs->hw_clkctrl_pll0ctrl0,
+ CLKCTRL_PLL0CTRL0_POWER);
early_delay(100);
- writel(CLKCTRL_CLKSEQ_BYPASS_CPU,
- &clkctrl_regs->hw_clkctrl_clkseq_clr);
+ setbits_le32(&clkctrl_regs->hw_clkctrl_clkseq,
+ CLKCTRL_CLKSEQ_BYPASS_CPU);
}
-void mx28_power_clear_auto_restart(void)
+static void mx28_power_clear_auto_restart(void)
{
struct mx28_rtc_regs *rtc_regs =
(struct mx28_rtc_regs *)MXS_RTC_BASE;
;
}
-void mx28_power_set_linreg(void)
+static void mx28_power_set_linreg(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
/* Set linear regulator 25mV below switching converter */
clrsetbits_le32(&power_regs->hw_power_vdddctrl,
POWER_VDDDCTRL_LINREG_OFFSET_MASK,
POWER_VDDIOCTRL_LINREG_OFFSET_1STEPS_BELOW);
}
-void mx28_power_setup_5v_detect(void)
+int mx28_get_batt_volt(void)
{
struct mx28_power_regs *power_regs =
(struct mx28_power_regs *)MXS_POWER_BASE;
+ uint32_t volt = readl(&power_regs->hw_power_battmonitor);
+ volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
+ volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
+ volt *= 8;
+ return volt;
+}
+
+int mx28_is_batt_ready(void)
+{
+ return (mx28_get_batt_volt() >= 3600);
+}
+
+int mx28_is_batt_good(void)
+{
+ struct mx28_power_regs *power_regs =
+ (struct mx28_power_regs *)MXS_POWER_BASE;
+ uint32_t volt = mx28_get_batt_volt();
+
+ if ((volt >= 2400) && (volt <= 4300))
+ return 1;
+
+ clrsetbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
+ 0x3 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
+ writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
+ &power_regs->hw_power_5vctrl_clr);
+ clrsetbits_le32(&power_regs->hw_power_charge,
+ POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK,
+ POWER_CHARGE_STOP_ILIMIT_10MA | 0x3);
+
+ writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_clr);
+ writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
+ &power_regs->hw_power_5vctrl_clr);
+
+ early_delay(500000);
+
+ volt = mx28_get_batt_volt();
+
+ if (volt >= 3500)
+ return 0;
+
+ if (volt >= 2400)
+ return 1;
+
+ writel(POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK,
+ &power_regs->hw_power_charge_clr);
+ writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_set);
+
+ return 0;
+}
+
+static void mx28_power_setup_5v_detect(void)
+{
/* Start 5V detection */
clrsetbits_le32(&power_regs->hw_power_5vctrl,
POWER_5VCTRL_VBUSVALID_TRSH_MASK,
POWER_5VCTRL_PWRUP_VBUS_CMPS);
}
-void mx28_src_power_init(void)
+static void mx28_src_power_init(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
/* Improve efficieny and reduce transient ripple */
writel(POWER_LOOPCTRL_TOGGLE_DIF | POWER_LOOPCTRL_EN_CM_HYST |
POWER_LOOPCTRL_EN_DF_HYST, &power_regs->hw_power_loopctrl_set);
POWER_DCLIMITS_POSLIMIT_BUCK_MASK,
0x30 << POWER_DCLIMITS_POSLIMIT_BUCK_OFFSET);
- setbits_le32(&power_regs->hw_power_battmonitor,
+ if (!fixed_batt_supply) {
+ /* FIXME: This requires the LRADC to be set up! */
+ setbits_le32(&power_regs->hw_power_battmonitor,
POWER_BATTMONITOR_EN_BATADJ);
+ } else {
+ clrbits_le32(&power_regs->hw_power_battmonitor,
+ POWER_BATTMONITOR_EN_BATADJ);
+ }
/* Increase the RCSCALE level for quick DCDC response to dynamic load */
clrsetbits_le32(&power_regs->hw_power_loopctrl,
clrsetbits_le32(&power_regs->hw_power_minpwr,
POWER_MINPWR_HALFFETS, POWER_MINPWR_DOUBLE_FETS);
- /* 5V to battery handoff ... FIXME */
- setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
- early_delay(30);
- clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+ if (!fixed_batt_supply) {
+ /* 5V to battery handoff ... FIXME */
+ setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+ early_delay(30);
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+ }
}
-void mx28_power_init_4p2_params(void)
+static void mx28_power_init_4p2_params(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
/* Setup 4P2 parameters */
clrsetbits_le32(&power_regs->hw_power_dcdc4p2,
POWER_DCDC4P2_CMPTRIP_MASK | POWER_DCDC4P2_TRG_MASK,
0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
}
-void mx28_enable_4p2_dcdc_input(int xfer)
+static void mx28_enable_4p2_dcdc_input(int xfer)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
uint32_t tmp, vbus_thresh, vbus_5vdetect, pwd_bo;
uint32_t prev_5v_brnout, prev_5v_droop;
POWER_CTRL_ENIRQ_VDD5V_DROOP);
}
-void mx28_power_init_4p2_regulator(void)
+static void mx28_power_init_4p2_regulator(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
uint32_t tmp, tmp2;
setbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_ENABLE_4P2);
writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
}
-void mx28_power_init_dcdc_4p2_source(void)
+static void mx28_power_init_dcdc_4p2_source(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
if (!(readl(&power_regs->hw_power_dcdc4p2) &
POWER_DCDC4P2_ENABLE_DCDC)) {
hang();
}
}
-void mx28_power_enable_4p2(void)
+static void mx28_power_enable_4p2(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
uint32_t vdddctrl, vddactrl, vddioctrl;
uint32_t tmp;
mx28_power_init_4p2_regulator();
/* Shutdown battery (none present) */
- clrbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_BO_MASK);
- writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
- writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr);
+ if (!mx28_is_batt_ready()) {
+ clrbits_le32(&power_regs->hw_power_dcdc4p2,
+ POWER_DCDC4P2_BO_MASK);
+ writel(POWER_CTRL_DCDC4P2_BO_IRQ,
+ &power_regs->hw_power_ctrl_clr);
+ writel(POWER_CTRL_ENIRQ_DCDC4P2_BO,
+ &power_regs->hw_power_ctrl_clr);
+ }
mx28_power_init_dcdc_4p2_source();
&power_regs->hw_power_charge_clr);
}
-void mx28_boot_valid_5v(void)
+static void mx28_boot_valid_5v(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
/*
* Use VBUSVALID level instead of VDD5V_GT_VDDIO level to trigger a 5V
* disconnect event. FIXME
mx28_power_enable_4p2();
}
-void mx28_powerdown(void)
+static void mx28_powerdown(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
writel(POWER_RESET_UNLOCK_KEY, &power_regs->hw_power_reset);
writel(POWER_RESET_UNLOCK_KEY | POWER_RESET_PWD_OFF,
&power_regs->hw_power_reset);
}
-void mx28_handle_5v_conflict(void)
+void mx28_batt_boot(void)
{
struct mx28_power_regs *power_regs =
(struct mx28_power_regs *)MXS_POWER_BASE;
+
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_PWDN_5VBRNOUT);
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_ENABLE_DCDC);
+
+ clrbits_le32(&power_regs->hw_power_dcdc4p2,
+ POWER_DCDC4P2_ENABLE_DCDC | POWER_DCDC4P2_ENABLE_4P2);
+ writel(POWER_CHARGE_ENABLE_LOAD, &power_regs->hw_power_charge_clr);
+
+ /* 5V to battery handoff. */
+ setbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+ early_delay(30);
+ clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
+
+ writel(POWER_CTRL_ENIRQ_DCDC4P2_BO, &power_regs->hw_power_ctrl_clr);
+
+ clrsetbits_le32(&power_regs->hw_power_minpwr,
+ POWER_MINPWR_HALFFETS, POWER_MINPWR_DOUBLE_FETS);
+
+ mx28_power_set_linreg();
+
+ clrbits_le32(&power_regs->hw_power_vdddctrl,
+ POWER_VDDDCTRL_DISABLE_FET | POWER_VDDDCTRL_ENABLE_LINREG);
+
+ clrbits_le32(&power_regs->hw_power_vddactrl,
+ POWER_VDDACTRL_DISABLE_FET | POWER_VDDACTRL_ENABLE_LINREG);
+
+ clrbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_VDDIOCTRL_DISABLE_FET);
+
+ setbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_PWD_CHARGE_4P2_MASK);
+
+ setbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_ENABLE_DCDC);
+
+ clrsetbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
+ 0x8 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
+}
+
+void mx28_handle_5v_conflict(void)
+{
uint32_t tmp;
setbits_le32(&power_regs->hw_power_vddioctrl,
mx28_powerdown();
break;
}
- }
-}
-int mx28_get_batt_volt(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t volt = readl(&power_regs->hw_power_battmonitor);
- volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
- volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
- volt *= 8;
- return volt;
-}
-
-int mx28_is_batt_ready(void)
-{
- return (mx28_get_batt_volt() >= 3600);
+ if (tmp & POWER_STS_PSWITCH_MASK) {
+ mx28_batt_boot();
+ break;
+ }
+ }
}
-void mx28_5v_boot(void)
+static void mx28_5v_boot(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
/*
* NOTE: In original IMX-Bootlets, this also checks for VBUSVALID,
* but their implementation always returns 1 so we omit it here.
mx28_handle_5v_conflict();
}
-void mx28_init_batt_bo(void)
+static void mx28_fixed_batt_boot(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
+ writel(POWER_CTRL_ENIRQ_BATT_BO, &power_regs->hw_power_ctrl_clr);
+
+ setbits_le32(&power_regs->hw_power_5vctrl,
+ POWER_5VCTRL_PWDN_5VBRNOUT |
+ POWER_5VCTRL_ENABLE_DCDC |
+ POWER_5VCTRL_ILIMIT_EQ_ZERO |
+ POWER_5VCTRL_PWDN_5VBRNOUT |
+ POWER_5VCTRL_PWD_CHARGE_4P2_MASK);
+
+ writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_set);
+
+ clrbits_le32(&power_regs->hw_power_vdddctrl,
+ POWER_VDDDCTRL_DISABLE_FET |
+ POWER_VDDDCTRL_ENABLE_LINREG |
+ POWER_VDDDCTRL_DISABLE_STEPPING);
- /* Brownout at 3V */
+ clrbits_le32(&power_regs->hw_power_vddactrl,
+ POWER_VDDACTRL_DISABLE_FET | POWER_VDDACTRL_ENABLE_LINREG |
+ POWER_VDDACTRL_DISABLE_STEPPING);
+
+ clrbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_VDDIOCTRL_DISABLE_FET |
+ POWER_VDDIOCTRL_DISABLE_STEPPING);
+
+ /* Stop 5V detection */
+ writel(POWER_5VCTRL_PWRUP_VBUS_CMPS,
+ &power_regs->hw_power_5vctrl_clr);
+}
+
+static void mx28_init_batt_bo(void)
+{
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);
}
-void mx28_switch_vddd_to_dcdc_source(void)
+static void mx28_switch_vddd_to_dcdc_source(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
clrsetbits_le32(&power_regs->hw_power_vdddctrl,
POWER_VDDDCTRL_LINREG_OFFSET_MASK,
POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW);
POWER_VDDDCTRL_DISABLE_STEPPING);
}
-int mx28_is_batt_good(void)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t volt;
-
- volt = readl(&power_regs->hw_power_battmonitor);
- volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
- volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
- volt *= 8;
-
- if ((volt >= 2400) && (volt <= 4300))
- return 1;
-
- clrsetbits_le32(&power_regs->hw_power_5vctrl,
- POWER_5VCTRL_CHARGE_4P2_ILIMIT_MASK,
- 0x3 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_clr);
-
- clrsetbits_le32(&power_regs->hw_power_charge,
- POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK,
- POWER_CHARGE_STOP_ILIMIT_10MA | 0x3);
-
- writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_clr);
- writel(POWER_5VCTRL_PWD_CHARGE_4P2_MASK,
- &power_regs->hw_power_5vctrl_clr);
-
- early_delay(500000);
-
- volt = readl(&power_regs->hw_power_battmonitor);
- volt &= POWER_BATTMONITOR_BATT_VAL_MASK;
- volt >>= POWER_BATTMONITOR_BATT_VAL_OFFSET;
- volt *= 8;
-
- if (volt >= 3500)
- return 0;
-
- if (volt >= 2400)
- return 1;
-
- writel(POWER_CHARGE_STOP_ILIMIT_MASK | POWER_CHARGE_BATTCHRG_I_MASK,
- &power_regs->hw_power_charge_clr);
- writel(POWER_CHARGE_PWD_BATTCHRG, &power_regs->hw_power_charge_set);
-
- return 0;
-}
-
-void mx28_power_configure_power_source(void)
+static void mx28_power_configure_power_source(void)
{
mx28_src_power_init();
- mx28_5v_boot();
+ if (!fixed_batt_supply)
+ mx28_5v_boot();
+ else
+ mx28_fixed_batt_boot();
+
mx28_power_clock2pll();
mx28_init_batt_bo();
+
mx28_switch_vddd_to_dcdc_source();
}
-void mx28_enable_output_rail_protection(void)
+static void mx28_enable_output_rail_protection(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
POWER_CTRL_VDDIO_BO_IRQ, &power_regs->hw_power_ctrl_clr);
POWER_VDDIOCTRL_PWDN_BRNOUT);
}
-int mx28_get_vddio_power_source_off(void)
+static inline int mx28_get_vddio_power_source_off(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
uint32_t tmp;
- if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
+ if ((readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) &&
+ !(readl(&power_regs->hw_power_5vctrl) &
+ POWER_5VCTRL_ILIMIT_EQ_ZERO)) {
+
tmp = readl(&power_regs->hw_power_vddioctrl);
if (tmp & POWER_VDDIOCTRL_DISABLE_FET) {
if ((tmp & POWER_VDDIOCTRL_LINREG_OFFSET_MASK) ==
}
return 0;
-
}
-int mx28_get_vddd_power_source_off(void)
+static inline int mx28_get_vddd_power_source_off(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
uint32_t tmp;
tmp = readl(&power_regs->hw_power_vdddctrl);
return 0;
}
-void mx28_power_set_vddio(uint32_t new_target, uint32_t new_brownout)
+static inline int mx28_get_vdda_power_source_off(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t cur_target, diff, bo_int = 0;
- uint32_t powered_by_linreg = 0;
+ uint32_t tmp;
- new_brownout = new_target - new_brownout;
+ tmp = readl(&power_regs->hw_power_vddactrl);
+ if (tmp & POWER_VDDACTRL_DISABLE_FET) {
+ if ((tmp & POWER_VDDACTRL_LINREG_OFFSET_MASK) ==
+ POWER_VDDACTRL_LINREG_OFFSET_0STEPS)
+ return 1;
+ }
- cur_target = readl(&power_regs->hw_power_vddioctrl);
- cur_target &= POWER_VDDIOCTRL_TRG_MASK;
- cur_target *= 50; /* 50 mV step*/
- cur_target += 2800; /* 2800 mV lowest */
+ if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
+ if (!(readl(&power_regs->hw_power_5vctrl) &
+ POWER_5VCTRL_ENABLE_DCDC))
+ return 1;
+ }
- powered_by_linreg = mx28_get_vddio_power_source_off();
- if (new_target > cur_target) {
+ if (!(tmp & POWER_VDDACTRL_ENABLE_LINREG)) {
+ if ((tmp & POWER_VDDACTRL_LINREG_OFFSET_MASK) ==
+ POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW)
+ return 1;
+ }
+ return 0;
+}
- if (powered_by_linreg) {
- bo_int = readl(&power_regs->hw_power_vddioctrl);
- clrbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_CTRL_ENIRQ_VDDIO_BO);
- }
+static inline void mx28_power_set_vddx(
+ uint32_t new_target, uint32_t new_brownout,
+ uint32_t *reg, const char *name,
+ uint32_t min_trg, uint32_t max_trg,
+ uint8_t step_size,
+ uint32_t trg_mask, uint32_t trg_shift,
+ uint32_t bo_mask, uint32_t bo_shift,
+ int powered_by_linreg)
+{
+ uint32_t cur_target, cur_brownout;
+ uint32_t diff;
+
+ if (new_target < min_trg || new_target > max_trg)
+ new_target = (new_target > max_trg) ? max_trg : min_trg;
+
+ if (new_brownout / step_size > 7)
+ new_brownout = 7 * step_size;
+
+ cur_target = readl(reg);
+
+ cur_brownout = (cur_target & bo_mask) >> bo_shift;
+ cur_brownout *= step_size;
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_BO_OFFSET_MASK);
+ cur_target = (cur_target & trg_mask) >> trg_shift;
+ cur_target *= step_size;
+ cur_target += min_trg;
+ if (cur_target > max_trg)
+ cur_target = max_trg;
+
+ if (new_target == cur_target && new_brownout == cur_brownout)
+ return;
+
+ if (new_target > cur_target) {
+ setbits_le32(reg, bo_mask);
do {
if (new_target - cur_target > 100)
diff = cur_target + 100;
else
diff = new_target;
- diff -= 2800;
- diff /= 50;
+ diff -= min_trg;
+ diff /= step_size;
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_TRG_MASK, diff);
+ clrsetbits_le32(reg, trg_mask, diff);
- if (powered_by_linreg ||
- (readl(&power_regs->hw_power_sts) &
- POWER_STS_VDD5V_GT_VDDIO))
- early_delay(500);
- else {
+ if (powered_by_linreg) {
+ early_delay(1500);
+ } else {
while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
-
+ POWER_STS_DC_OK)) {
+ }
}
- cur_target = readl(&power_regs->hw_power_vddioctrl);
- cur_target &= POWER_VDDIOCTRL_TRG_MASK;
- cur_target *= 50; /* 50 mV step*/
- cur_target += 2800; /* 2800 mV lowest */
+ cur_target = readl(reg);
+ cur_target &= trg_mask;
+ cur_target *= step_size;
+ cur_target += min_trg;
} while (new_target > cur_target);
-
- if (powered_by_linreg) {
- writel(POWER_CTRL_VDDIO_BO_IRQ,
- &power_regs->hw_power_ctrl_clr);
- if (bo_int & POWER_CTRL_ENIRQ_VDDIO_BO)
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_CTRL_ENIRQ_VDDIO_BO);
- }
} else {
do {
if (cur_target - new_target > 100)
else
diff = new_target;
- diff -= 2800;
- diff /= 50;
+ diff -= min_trg;
+ diff /= step_size;
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_TRG_MASK, diff);
+ clrsetbits_le32(reg, trg_mask, diff);
- if (powered_by_linreg ||
- (readl(&power_regs->hw_power_sts) &
- POWER_STS_VDD5V_GT_VDDIO))
- early_delay(500);
- else {
+ if (powered_by_linreg) {
+ early_delay(1500);
+ } else {
while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
-
+ POWER_STS_DC_OK)) {
+ }
}
- cur_target = readl(&power_regs->hw_power_vddioctrl);
- cur_target &= POWER_VDDIOCTRL_TRG_MASK;
- cur_target *= 50; /* 50 mV step*/
- cur_target += 2800; /* 2800 mV lowest */
+ cur_target = readl(reg);
+ cur_target &= trg_mask;
+ cur_target *= step_size;
+ cur_target += min_trg;
} while (new_target < cur_target);
}
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
+ clrsetbits_le32(reg, bo_mask, (new_brownout / step_size) << bo_shift);
}
-void mx28_power_set_vddd(uint32_t new_target, uint32_t new_brownout)
-{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
- uint32_t cur_target, diff, bo_int = 0;
- uint32_t powered_by_linreg = 0;
+#define __mx28_power_set_vddx(trg, bo, min, max, step, reg, name, lr) \
+ mx28_power_set_vddx(trg, bo, \
+ &power_regs->hw_power_##reg##ctrl, #name, \
+ min, max, step, \
+ POWER_##name##CTRL_TRG_MASK, \
+ POWER_##name##CTRL_TRG_OFFSET, \
+ POWER_##name##CTRL_BO_OFFSET_MASK, \
+ POWER_##name##CTRL_BO_OFFSET_OFFSET, lr)
- new_brownout = new_target - new_brownout;
-
- cur_target = readl(&power_regs->hw_power_vdddctrl);
- cur_target &= POWER_VDDDCTRL_TRG_MASK;
- cur_target *= 25; /* 25 mV step*/
- cur_target += 800; /* 800 mV lowest */
-
- powered_by_linreg = mx28_get_vddd_power_source_off();
- if (new_target > cur_target) {
- if (powered_by_linreg) {
- bo_int = readl(&power_regs->hw_power_vdddctrl);
- clrbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_CTRL_ENIRQ_VDDD_BO);
- }
-
- setbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK);
-
- do {
- if (new_target - cur_target > 100)
- diff = cur_target + 100;
- else
- diff = new_target;
-
- diff -= 800;
- diff /= 25;
-
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_TRG_MASK, diff);
+static inline void mx28_power_set_vddd(uint32_t target, uint32_t brownout)
+{
+ int powered_by_linreg = mx28_get_vddd_power_source_off();
+ uint32_t bo_int = 0;
- if (powered_by_linreg ||
- (readl(&power_regs->hw_power_sts) &
- POWER_STS_VDD5V_GT_VDDIO))
- early_delay(500);
- else {
- while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
+ if (powered_by_linreg) {
+ bo_int = readl(&power_regs->hw_power_vdddctrl);
+ clrbits_le32(&power_regs->hw_power_vdddctrl,
+ POWER_CTRL_ENIRQ_VDDD_BO);
+ }
- }
+ __mx28_power_set_vddx(target, brownout, 800, 1575, 25, vddd, VDDD,
+ powered_by_linreg);
- cur_target = readl(&power_regs->hw_power_vdddctrl);
- cur_target &= POWER_VDDDCTRL_TRG_MASK;
- cur_target *= 25; /* 25 mV step*/
- cur_target += 800; /* 800 mV lowest */
- } while (new_target > cur_target);
+ if (powered_by_linreg) {
+ writel(POWER_CTRL_VDDD_BO_IRQ,
+ &power_regs->hw_power_ctrl_clr);
+ if (bo_int & POWER_CTRL_ENIRQ_VDDD_BO)
+ setbits_le32(&power_regs->hw_power_vdddctrl,
+ POWER_CTRL_ENIRQ_VDDD_BO);
+ }
+}
- if (powered_by_linreg) {
- writel(POWER_CTRL_VDDD_BO_IRQ,
- &power_regs->hw_power_ctrl_clr);
- if (bo_int & POWER_CTRL_ENIRQ_VDDD_BO)
- setbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_CTRL_ENIRQ_VDDD_BO);
- }
- } else {
- do {
- if (cur_target - new_target > 100)
- diff = cur_target - 100;
- else
- diff = new_target;
+static inline void mx28_power_set_vddio(uint32_t target, uint32_t brownout)
+{
+ int powered_by_linreg = mx28_get_vddio_power_source_off();
+ uint32_t bo_int = 0;
- diff -= 800;
- diff /= 25;
+ if (powered_by_linreg) {
+ bo_int = readl(&power_regs->hw_power_vddioctrl);
+ clrbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_CTRL_ENIRQ_VDDIO_BO);
+ }
+ __mx28_power_set_vddx(target, brownout, 2800, 3600, 50, vddio, VDDIO,
+ powered_by_linreg);
+ if (powered_by_linreg) {
+ writel(POWER_CTRL_VDDIO_BO_IRQ,
+ &power_regs->hw_power_ctrl_clr);
+ if (bo_int & POWER_CTRL_ENIRQ_VDDIO_BO)
+ setbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_CTRL_ENIRQ_VDDIO_BO);
+ }
+}
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_TRG_MASK, diff);
+static inline void mx28_power_set_vdda(uint32_t target, uint32_t brownout)
+{
+ int powered_by_linreg = mx28_get_vdda_power_source_off();
+ uint32_t bo_int = 0;
- if (powered_by_linreg ||
- (readl(&power_regs->hw_power_sts) &
- POWER_STS_VDD5V_GT_VDDIO))
- early_delay(500);
- else {
- while (!(readl(&power_regs->hw_power_sts) &
- POWER_STS_DC_OK))
- ;
+ if (powered_by_linreg) {
+ bo_int = readl(&power_regs->hw_power_vddioctrl);
+ clrbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_CTRL_ENIRQ_VDDIO_BO);
+ }
+ __mx28_power_set_vddx(target, brownout, 1500, 2275, 25, vdda, VDDA,
+ powered_by_linreg);
+ if (powered_by_linreg) {
+ writel(POWER_CTRL_VDDIO_BO_IRQ,
+ &power_regs->hw_power_ctrl_clr);
+ if (bo_int & POWER_CTRL_ENIRQ_VDDIO_BO)
+ setbits_le32(&power_regs->hw_power_vddioctrl,
+ POWER_CTRL_ENIRQ_VDDIO_BO);
+ }
+}
- }
+static inline void mx28_power_set_vddmem(uint32_t target, uint32_t brownout)
+{
+ __mx28_power_set_vddx(target, brownout, 1100, 1750, 25, vddmem, VDDMEM,
+ 0);
- cur_target = readl(&power_regs->hw_power_vdddctrl);
- cur_target &= POWER_VDDDCTRL_TRG_MASK;
- cur_target *= 25; /* 25 mV step*/
- cur_target += 800; /* 800 mV lowest */
- } while (new_target < cur_target);
- }
+ clrbits_le32(&power_regs->hw_power_vddmemctrl,
+ POWER_VDDMEMCTRL_ENABLE_LINREG |
+ POWER_VDDMEMCTRL_ENABLE_ILIMIT);
+}
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
+void mx28_setup_batt_detect(void)
+{
+ mx28_lradc_init();
+ mx28_lradc_enable_batt_measurement();
+ early_delay(10);
}
void mx28_power_init(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
mx28_power_clock2xtal();
mx28_power_clear_auto_restart();
mx28_power_set_linreg();
- mx28_power_setup_5v_detect();
+ if (!fixed_batt_supply)
+ mx28_power_setup_5v_detect();
+
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(1350, 1200);
+ mx28_power_set_vddd(VDDD_VAL, VDDD_BO_VAL);
+
+ mx28_power_set_vdda(VDDA_VAL, VDDA_BO_VAL);
+
+ mx28_power_set_vddmem(VDDMEM_VAL, VDDMEM_BO_VAL);
writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ |
POWER_CTRL_VBUS_VALID_IRQ | POWER_CTRL_BATT_BO_IRQ |
POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
-
- writel(POWER_5VCTRL_PWDN_5VBRNOUT, &power_regs->hw_power_5vctrl_set);
-
- early_delay(1000);
+ if (!fixed_batt_supply)
+ writel(POWER_5VCTRL_PWDN_5VBRNOUT,
+ &power_regs->hw_power_5vctrl_set);
}
#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT
void mx28_power_wait_pswitch(void)
{
- struct mx28_power_regs *power_regs =
- (struct mx28_power_regs *)MXS_POWER_BASE;
-
while (!(readl(&power_regs->hw_power_sts) & POWER_STS_PSWITCH_MASK))
;
}
projects / karo-tx-uboot.git / blobdiff