* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
* on behalf of DENX Software Engineering GmbH
*
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
+ * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include "mxs_init.h"
-void mxs_power_clock2xtal(void)
+static void mxs_power_clock2xtal(void)
{
struct mxs_clkctrl_regs *clkctrl_regs =
(struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
&clkctrl_regs->hw_clkctrl_clkseq_set);
}
-void mxs_power_clock2pll(void)
+static void mxs_power_clock2pll(void)
{
struct mxs_clkctrl_regs *clkctrl_regs =
(struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
CLKCTRL_CLKSEQ_BYPASS_CPU);
}
-void mxs_power_clear_auto_restart(void)
+static void mxs_power_set_auto_restart(void)
{
struct mxs_rtc_regs *rtc_regs =
(struct mxs_rtc_regs *)MXS_RTC_BASE;
while (readl(&rtc_regs->hw_rtc_ctrl) & RTC_CTRL_CLKGATE)
;
- /*
- * Due to the hardware design bug of mx28 EVK-A
- * we need to set the AUTO_RESTART bit.
- */
+ /* Do nothing if flag already set */
if (readl(&rtc_regs->hw_rtc_persistent0) & RTC_PERSISTENT0_AUTO_RESTART)
return;
;
}
-void mxs_power_set_linreg(void)
+static void mxs_power_set_linreg(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
POWER_VDDIOCTRL_LINREG_OFFSET_1STEPS_BELOW);
}
-int mxs_get_batt_volt(void)
+static int mxs_get_batt_volt(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
return volt;
}
-int mxs_is_batt_ready(void)
+static int mxs_is_batt_ready(void)
{
return (mxs_get_batt_volt() >= 3600);
}
-int mxs_is_batt_good(void)
+static int mxs_is_batt_good(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
return 0;
}
-void mxs_power_setup_5v_detect(void)
+static void mxs_power_setup_5v_detect(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
POWER_5VCTRL_PWRUP_VBUS_CMPS);
}
-void mxs_src_power_init(void)
+static void mxs_src_power_init(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
clrbits_le32(&power_regs->hw_power_5vctrl, POWER_5VCTRL_DCDC_XFER);
}
-void mxs_power_init_4p2_params(void)
+static void mxs_power_init_4p2_params(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
0x3f << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
}
-void mxs_enable_4p2_dcdc_input(int xfer)
+static void mxs_enable_4p2_dcdc_input(int xfer)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
POWER_CTRL_ENIRQ_VDD5V_DROOP);
}
-void mxs_power_init_4p2_regulator(void)
+static void mxs_power_init_4p2_regulator(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
writel(POWER_CTRL_DCDC4P2_BO_IRQ, &power_regs->hw_power_ctrl_clr);
}
-void mxs_power_init_dcdc_4p2_source(void)
+static void mxs_power_init_dcdc_4p2_source(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
}
}
-void mxs_power_enable_4p2(void)
+static void mxs_power_enable_4p2(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
&power_regs->hw_power_charge_clr);
}
-void mxs_boot_valid_5v(void)
+static void mxs_boot_valid_5v(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
mxs_power_enable_4p2();
}
-void mxs_powerdown(void)
+static void mxs_powerdown(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
&power_regs->hw_power_reset);
}
-void mxs_batt_boot(void)
+static void mxs_batt_boot(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
0x8 << POWER_5VCTRL_CHARGE_4P2_ILIMIT_OFFSET);
}
-void mxs_handle_5v_conflict(void)
+static void mxs_handle_5v_conflict(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
}
}
-void mxs_5v_boot(void)
+static void mxs_5v_boot(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
mxs_handle_5v_conflict();
}
-void mxs_init_batt_bo(void)
+static void mxs_init_batt_bo(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);
}
-void mxs_switch_vddd_to_dcdc_source(void)
+static void mxs_switch_vddd_to_dcdc_source(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
POWER_VDDDCTRL_DISABLE_STEPPING);
}
-void mxs_power_configure_power_source(void)
+static void mxs_power_configure_power_source(void)
{
int batt_ready, batt_good;
struct mxs_power_regs *power_regs =
mxs_init_batt_bo();
mxs_switch_vddd_to_dcdc_source();
+
+#ifdef CONFIG_MX23
+ /* Fire up the VDDMEM LinReg now that we're all set. */
+ writel(POWER_VDDMEMCTRL_ENABLE_LINREG | POWER_VDDMEMCTRL_ENABLE_ILIMIT,
+ &power_regs->hw_power_vddmemctrl);
+#endif
}
-void mxs_enable_output_rail_protection(void)
+static void mxs_enable_output_rail_protection(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
POWER_VDDIOCTRL_PWDN_BRNOUT);
}
-int mxs_get_vddio_power_source_off(void)
+static int mxs_get_vddio_power_source_off(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
}
-int mxs_get_vddd_power_source_off(void)
+static int mxs_get_vddd_power_source_off(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
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;
+};
+
+static const struct mxs_vddx_cfg mxs_vddio_cfg = {
+ .reg = &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+ hw_power_vddioctrl),
+#if defined(CONFIG_MX23)
+ .step_mV = 25,
+#else
+ .step_mV = 50,
+#endif
+ .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,
+};
+
+static 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,
+};
+
+#ifdef CONFIG_MX23
+static const struct mxs_vddx_cfg mxs_vddmem_cfg = {
+ .reg = &(((struct mxs_power_regs *)MXS_POWER_BASE)->
+ hw_power_vddmemctrl),
+ .step_mV = 50,
+ .lowest_mV = 1700,
+ .powered_by_linreg = NULL,
+ .trg_mask = POWER_VDDMEMCTRL_TRG_MASK,
+ .bo_irq = 0,
+ .bo_enirq = 0,
+ .bo_offset_mask = 0,
+ .bo_offset_offset = 0,
+};
+#endif
+
+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;
+ if (cfg->powered_by_linreg)
+ powered_by_linreg = cfg->powered_by_linreg();
+ if (adjust_up && cfg->bo_irq) {
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 -= cfg->lowest_mV;
+ diff /= cfg->step_mV;
- diff -= 800;
- diff /= 25;
-
- 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))
- ;
+ 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;
-
- 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(cfg->reg);
+ cur_target &= cfg->trg_mask;
+ cur_target *= cfg->step_mV;
+ cur_target += cfg->lowest_mV;
+ } while (new_target > cur_target);
+
+ if (cfg->bo_irq) {
+ 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);
+ }
- 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);
+ clrsetbits_le32(cfg->reg, cfg->bo_offset_mask,
+ new_brownout << cfg->bo_offset_offset);
}
-
- clrsetbits_le32(&power_regs->hw_power_vdddctrl,
- POWER_VDDDCTRL_BO_OFFSET_MASK,
- new_brownout << POWER_VDDDCTRL_BO_OFFSET_OFFSET);
}
-void mxs_setup_batt_detect(void)
+static void mxs_setup_batt_detect(void)
{
mxs_lradc_init();
mxs_lradc_enable_batt_measurement();
early_delay(10);
}
+static void mxs_ungate_power(void)
+{
+#ifdef CONFIG_MX23
+ struct mxs_power_regs *power_regs =
+ (struct mxs_power_regs *)MXS_POWER_BASE;
+
+ writel(POWER_CTRL_CLKGATE, &power_regs->hw_power_ctrl_clr);
+#endif
+}
+
void mxs_power_init(void)
{
struct mxs_power_regs *power_regs =
(struct mxs_power_regs *)MXS_POWER_BASE;
+ mxs_ungate_power();
+
mxs_power_clock2xtal();
- mxs_power_clear_auto_restart();
+ mxs_power_set_auto_restart();
mxs_power_set_linreg();
mxs_power_setup_5v_detect();
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, 1500, 1000);
+#ifdef CONFIG_MX23
+ mxs_power_set_vddx(&mxs_vddmem_cfg, 2500, 1700);
+#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 |
early_delay(1000);
}
-#ifdef CONFIG_SPL_MX28_PSWITCH_WAIT
+#ifdef CONFIG_SPL_MXS_PSWITCH_WAIT
void mxs_power_wait_pswitch(void)
{
struct mxs_power_regs *power_regs =
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