#include "mxs_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
+
+#ifdef CONFIG_SYS_SPL_FIXED_BATT_SUPPLY
+static const int fixed_batt_supply = 1;
+#else
+static const int fixed_batt_supply;
+#endif
+
+static struct mxs_power_regs *power_regs = (void *)MXS_POWER_BASE;
+
static void mxs_power_clock2xtal(void)
{
struct mxs_clkctrl_regs *clkctrl_regs =
static void mxs_power_set_linreg(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
/* Set linear regulator 25mV below switching converter */
clrsetbits_le32(&power_regs->hw_power_vdddctrl,
POWER_VDDDCTRL_LINREG_OFFSET_MASK,
static int mxs_get_batt_volt(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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;
static int mxs_is_batt_good(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t volt = mxs_get_batt_volt();
if ((volt >= 2400) && (volt <= 4300))
static void mxs_power_setup_5v_detect(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
/* Start 5V detection */
clrsetbits_le32(&power_regs->hw_power_5vctrl,
POWER_5VCTRL_VBUSVALID_TRSH_MASK,
static void mxs_src_power_init(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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);
+ }
}
static void mxs_power_init_4p2_params(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
/* Setup 4P2 parameters */
clrsetbits_le32(&power_regs->hw_power_dcdc4p2,
POWER_DCDC4P2_CMPTRIP_MASK | POWER_DCDC4P2_TRG_MASK,
static void mxs_enable_4p2_dcdc_input(int xfer)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t tmp, vbus_thresh, vbus_5vdetect, pwd_bo;
uint32_t prev_5v_brnout, prev_5v_droop;
static void mxs_power_init_4p2_regulator(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t tmp, tmp2;
setbits_le32(&power_regs->hw_power_dcdc4p2, POWER_DCDC4P2_ENABLE_4P2);
static void mxs_power_init_dcdc_4p2_source(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
if (!(readl(&power_regs->hw_power_dcdc4p2) &
POWER_DCDC4P2_ENABLE_DCDC)) {
hang();
static void mxs_power_enable_4p2(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t vdddctrl, vddactrl, vddioctrl;
uint32_t tmp;
static void mxs_boot_valid_5v(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
/*
* Use VBUSVALID level instead of VDD5V_GT_VDDIO level to trigger a 5V
* disconnect event. FIXME
static void mxs_powerdown(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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);
static void mxs_batt_boot(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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);
static void mxs_handle_5v_conflict(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t tmp;
setbits_le32(&power_regs->hw_power_vddioctrl,
static void mxs_5v_boot(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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.
mxs_handle_5v_conflict();
}
-static void mxs_init_batt_bo(void)
+static void mxs_fixed_batt_boot(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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);
+
+ 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);
- /* Brownout at 3V */
+ /* Stop 5V detection */
+ writel(POWER_5VCTRL_PWRUP_VBUS_CMPS,
+ &power_regs->hw_power_5vctrl_clr);
+}
+
+static void mxs_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);
static void mxs_switch_vddd_to_dcdc_source(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
clrsetbits_le32(&power_regs->hw_power_vdddctrl,
POWER_VDDDCTRL_LINREG_OFFSET_MASK,
POWER_VDDDCTRL_LINREG_OFFSET_1STEPS_BELOW);
static void mxs_power_configure_power_source(void)
{
- int batt_ready, batt_good;
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
struct mxs_lradc_regs *lradc_regs =
(struct mxs_lradc_regs *)MXS_LRADC_BASE;
mxs_src_power_init();
- if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
- batt_ready = mxs_is_batt_ready();
- if (batt_ready) {
- /* 5V source detected, good battery detected. */
- mxs_batt_boot();
- } else {
- batt_good = mxs_is_batt_good();
- if (!batt_good) {
- /* 5V source detected, bad battery detected. */
- writel(LRADC_CONVERSION_AUTOMATIC,
- &lradc_regs->hw_lradc_conversion_clr);
- clrbits_le32(&power_regs->hw_power_battmonitor,
- POWER_BATTMONITOR_BATT_VAL_MASK);
+ if (!fixed_batt_supply) {
+ if (readl(&power_regs->hw_power_sts) & POWER_STS_VDD5V_GT_VDDIO) {
+ if (mxs_is_batt_ready()) {
+ /* 5V source detected, good battery detected. */
+ mxs_batt_boot();
+ } else {
+ if (!mxs_is_batt_good()) {
+ /* 5V source detected, bad battery detected. */
+ writel(LRADC_CONVERSION_AUTOMATIC,
+ &lradc_regs->hw_lradc_conversion_clr);
+ clrbits_le32(&power_regs->hw_power_battmonitor,
+ POWER_BATTMONITOR_BATT_VAL_MASK);
+ }
+ mxs_5v_boot();
}
- mxs_5v_boot();
+ } else {
+ /* 5V not detected, booting from battery. */
+ mxs_batt_boot();
}
} else {
- /* 5V not detected, booting from battery. */
- mxs_batt_boot();
+ mxs_fixed_batt_boot();
}
mxs_power_clock2pll();
static void mxs_enable_output_rail_protection(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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);
static int mxs_get_vddio_power_source_off(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_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;
-
}
static int mxs_get_vddd_power_source_off(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t tmp;
tmp = readl(&power_regs->hw_power_vdddctrl);
return 0;
}
+static int mxs_get_vdda_power_source_off(void)
+{
+ uint32_t tmp;
+
+ 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;
+ }
+ }
+
+ 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;
+ }
+ }
+
+ if (!(tmp & POWER_VDDACTRL_ENABLE_LINREG)) {
+ if ((tmp & POWER_VDDACTRL_LINREG_OFFSET_MASK) ==
+ POWER_VDDACTRL_LINREG_OFFSET_1STEPS_BELOW) {
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
struct mxs_vddx_cfg {
uint32_t *reg;
uint8_t step_mV;
uint16_t lowest_mV;
+ uint16_t highest_mV;
int (*powered_by_linreg)(void);
uint32_t trg_mask;
uint32_t bo_irq;
hw_power_vddioctrl),
.step_mV = 50,
.lowest_mV = 2800,
+ .highest_mV = 3600,
.powered_by_linreg = mxs_get_vddio_power_source_off,
.trg_mask = POWER_VDDIOCTRL_TRG_MASK,
.bo_irq = POWER_CTRL_VDDIO_BO_IRQ,
hw_power_vdddctrl),
.step_mV = 25,
.lowest_mV = 800,
+ .highest_mV = 1575,
.powered_by_linreg = mxs_get_vddd_power_source_off,
.trg_mask = POWER_VDDDCTRL_TRG_MASK,
.bo_irq = POWER_CTRL_VDDD_BO_IRQ,
.bo_offset_offset = POWER_VDDDCTRL_BO_OFFSET_OFFSET,
};
+static const struct mxs_vddx_cfg mxs_vdda_cfg = {
+ .reg = &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+ hw_power_vddactrl),
+ .step_mV = 50,
+ .lowest_mV = 2800,
+ .highest_mV = 3600,
+ .powered_by_linreg = mxs_get_vdda_power_source_off,
+ .trg_mask = POWER_VDDACTRL_TRG_MASK,
+ .bo_irq = POWER_CTRL_VDDA_BO_IRQ,
+ .bo_enirq = POWER_CTRL_ENIRQ_VDDA_BO,
+ .bo_offset_mask = POWER_VDDACTRL_BO_OFFSET_MASK,
+ .bo_offset_offset = POWER_VDDACTRL_BO_OFFSET_OFFSET,
+};
+
+static const struct mxs_vddx_cfg mxs_vddmem_cfg = {
+ .reg = &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+ hw_power_vddmemctrl),
+ .step_mV = 25,
+ .lowest_mV = 1100,
+ .highest_mV = 1750,
+ .bo_offset_mask = POWER_VDDMEMCTRL_BO_OFFSET_MASK,
+ .bo_offset_offset = POWER_VDDMEMCTRL_BO_OFFSET_OFFSET,
+};
+
static void mxs_power_set_vddx(const struct mxs_vddx_cfg *cfg,
uint32_t new_target, uint32_t new_brownout)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
uint32_t cur_target, diff, bo_int = 0;
- uint32_t powered_by_linreg = 0;
- int adjust_up, tmp;
+ int powered_by_linreg = 0;
+ int adjust_up;
+
+ if (new_target < cfg->lowest_mV)
+ new_target = cfg->lowest_mV;
+ if (new_target > cfg->highest_mV)
+ new_target = cfg->highest_mV;
new_brownout = DIV_ROUND(new_target - new_brownout, cfg->step_mV);
cur_target += cfg->lowest_mV;
adjust_up = new_target > cur_target;
- powered_by_linreg = cfg->powered_by_linreg();
+ if (cfg->powered_by_linreg)
+ powered_by_linreg = cfg->powered_by_linreg();
if (adjust_up) {
if (powered_by_linreg) {
if (powered_by_linreg ||
(readl(&power_regs->hw_power_sts) &
- POWER_STS_VDD5V_GT_VDDIO))
+ POWER_STS_VDD5V_GT_VDDIO)) {
early_delay(500);
- else {
- for (;;) {
- tmp = readl(&power_regs->hw_power_sts);
- if (tmp & POWER_STS_DC_OK)
- break;
+ } else {
+ while (!(readl(&power_regs->hw_power_sts) &
+ POWER_STS_DC_OK)) {
+
}
}
void mxs_power_init(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
mxs_power_clock2xtal();
mxs_power_clear_auto_restart();
mxs_power_set_linreg();
- mxs_power_setup_5v_detect();
- mxs_setup_batt_detect();
+ if (!fixed_batt_supply) {
+ mxs_power_setup_5v_detect();
+ mxs_setup_batt_detect();
+ }
mxs_power_configure_power_source();
mxs_enable_output_rail_protection();
- mxs_power_set_vddx(&mxs_vddio_cfg, 3300, 3150);
- mxs_power_set_vddx(&mxs_vddd_cfg, 1500, 1000);
-
+ mxs_power_set_vddx(&mxs_vddio_cfg, VDDIO_VAL, VDDIO_BO_VAL);
+ mxs_power_set_vddx(&mxs_vddd_cfg, VDDD_VAL, VDDD_BO_VAL);
+ mxs_power_set_vddx(&mxs_vdda_cfg, VDDA_VAL, VDDA_BO_VAL);
+#if VDDMEM_VAL > 0
+ mxs_power_set_vddx(&mxs_vddmem_cfg, VDDMEM_VAL, VDDMEM_BO_VAL);
+
+ setbits_le32(&power_regs->hw_power_vddmemctrl,
+ POWER_VDDMEMCTRL_ENABLE_LINREG);
+ early_delay(500);
+ clrbits_le32(&power_regs->hw_power_vddmemctrl,
+ POWER_VDDMEMCTRL_ENABLE_ILIMIT);
+#else
+ clrbits_le32(&power_regs->hw_power_vddmemctrl,
+ POWER_VDDMEMCTRL_ENABLE_LINREG);
+#endif
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 mxs_power_wait_pswitch(void)
{
- struct mxs_power_regs *power_regs =
- (struct mxs_power_regs *)MXS_POWER_BASE;
-
while (!(readl(&power_regs->hw_power_sts) & POWER_STS_PSWITCH_MASK))
;
}
projects / karo-tx-uboot.git / blobdiff