summaryrefslogtreecommitdiff
path: root/arch/arm/cpu/arm926ejs/mxs
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/cpu/arm926ejs/mxs')
-rw-r--r--arch/arm/cpu/arm926ejs/mxs/spl_power_init.c253
1 files changed, 83 insertions, 170 deletions
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
index 4b917bd186..0d80158fa3 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
@@ -766,198 +766,112 @@ int mxs_get_vddd_power_source_off(void)
return 0;
}
-void mxs_power_set_vddio(uint32_t new_target, uint32_t new_brownout)
+struct mxs_vddx_cfg {
+ uint32_t *reg;
+ uint8_t step_mV;
+ uint16_t lowest_mV;
+ int (*powered_by_linreg)(void);
+ uint32_t trg_mask;
+ uint32_t bo_irq;
+ uint32_t bo_enirq;
+ uint32_t bo_offset_mask;
+ uint32_t bo_offset_offset;
+};
+
+const struct mxs_vddx_cfg mxs_vddio_cfg = {
+ .reg = &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+ hw_power_vddioctrl),
+ .step_mV = 50,
+ .lowest_mV = 2800,
+ .powered_by_linreg = mxs_get_vddio_power_source_off,
+ .trg_mask = POWER_VDDIOCTRL_TRG_MASK,
+ .bo_irq = POWER_CTRL_VDDIO_BO_IRQ,
+ .bo_enirq = POWER_CTRL_ENIRQ_VDDIO_BO,
+ .bo_offset_mask = POWER_VDDIOCTRL_BO_OFFSET_MASK,
+ .bo_offset_offset = POWER_VDDIOCTRL_BO_OFFSET_OFFSET,
+};
+
+const struct mxs_vddx_cfg mxs_vddd_cfg = {
+ .reg = &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+ hw_power_vdddctrl),
+ .step_mV = 25,
+ .lowest_mV = 800,
+ .powered_by_linreg = mxs_get_vddd_power_source_off,
+ .trg_mask = POWER_VDDDCTRL_TRG_MASK,
+ .bo_irq = POWER_CTRL_VDDD_BO_IRQ,
+ .bo_enirq = POWER_CTRL_ENIRQ_VDDD_BO,
+ .bo_offset_mask = POWER_VDDDCTRL_BO_OFFSET_MASK,
+ .bo_offset_offset = POWER_VDDDCTRL_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;
- new_brownout = (new_target - new_brownout + 25) / 50;
+ new_brownout = DIV_ROUND(new_target - new_brownout, cfg->step_mV);
- 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(cfg->reg);
+ cur_target &= cfg->trg_mask;
+ cur_target *= cfg->step_mV;
+ cur_target += cfg->lowest_mV;
- powered_by_linreg = mxs_get_vddio_power_source_off();
- if (new_target > cur_target) {
+ adjust_up = new_target > cur_target;
+ powered_by_linreg = cfg->powered_by_linreg();
+ if (adjust_up) {
if (powered_by_linreg) {
- bo_int = readl(&power_regs->hw_power_vddioctrl);
- clrbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_CTRL_ENIRQ_VDDIO_BO);
+ bo_int = readl(cfg->reg);
+ clrbits_le32(cfg->reg, cfg->bo_enirq);
}
+ setbits_le32(cfg->reg, cfg->bo_offset_mask);
+ }
- setbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_BO_OFFSET_MASK);
- do {
- if (new_target - cur_target > 100)
+ do {
+ if (abs(new_target - cur_target) > 100) {
+ if (adjust_up)
diff = cur_target + 100;
else
- diff = new_target;
-
- diff -= 2800;
- diff /= 50;
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_TRG_MASK, diff);
-
- 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))
- ;
-
- }
-
- 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 */
- } 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)
diff = cur_target - 100;
- else
- diff = new_target;
-
- diff -= 2800;
- diff /= 50;
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_TRG_MASK, diff);
-
- 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))
- ;
-
- }
-
- 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 */
- } while (new_target < cur_target);
- }
-
- clrsetbits_le32(&power_regs->hw_power_vddioctrl,
- POWER_VDDIOCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDIOCTRL_BO_OFFSET_OFFSET);
-}
-
-void mxs_power_set_vddd(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;
-
- new_brownout = (new_target - new_brownout + 12) / 25;
-
- 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 = mxs_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);
+ } else {
+ diff = new_target;
}
- 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);
+ diff -= cfg->lowest_mV;
+ diff /= cfg->step_mV;
- 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))
- ;
+ clrsetbits_le32(cfg->reg, cfg->trg_mask, diff);
+ if (powered_by_linreg ||
+ (readl(&power_regs->hw_power_sts) &
+ POWER_STS_VDD5V_GT_VDDIO))
+ early_delay(500);
+ else {
+ for (;;) {
+ tmp = readl(&power_regs->hw_power_sts);
+ if (tmp & POWER_STS_DC_OK)
+ break;
}
-
- 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);
}
- } else {
- do {
- if (cur_target - new_target > 100)
- diff = cur_target - 100;
- else
- diff = new_target;
- diff -= 800;
- diff /= 25;
+ cur_target = readl(cfg->reg);
+ cur_target &= cfg->trg_mask;
+ cur_target *= cfg->step_mV;
+ cur_target += cfg->lowest_mV;
+ } while (new_target > cur_target);
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_TRG_MASK, diff);
-
- 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))
- ;
-
- }
-
- 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 (adjust_up && powered_by_linreg) {
+ writel(cfg->bo_irq, &power_regs->hw_power_ctrl_clr);
+ if (bo_int & cfg->bo_enirq)
+ setbits_le32(cfg->reg, cfg->bo_enirq);
}
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
+ clrsetbits_le32(cfg->reg, cfg->bo_offset_mask,
+ new_brownout << cfg->bo_offset_offset);
}
void mxs_setup_batt_detect(void)
@@ -982,9 +896,8 @@ void mxs_power_init(void)
mxs_power_configure_power_source();
mxs_enable_output_rail_protection();
- mxs_power_set_vddio(3300, 3150);
-
- mxs_power_set_vddd(1350, 1200);
+ mxs_power_set_vddx(&mxs_vddio_cfg, 3300, 3150);
+ mxs_power_set_vddx(&mxs_vddd_cfg, 1350, 1200);
writel(POWER_CTRL_VDDD_BO_IRQ | POWER_CTRL_VDDA_BO_IRQ |
POWER_CTRL_VDDIO_BO_IRQ | POWER_CTRL_VDD5V_DROOP_IRQ |
generated by cgit (git 2.34.1) at 2024-12-27 20:00:43 +0000