+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2009 Wind River Systems, Inc.
* Tom Rix <Tom.Rix at windriver.com>
*
- * 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
- *
* twl4030_power_reset_init is derived from code on omapzoom,
* git://git.omapzoom.com/repo/u-boot.git
*
* Derived from Beagle Board and 3430 SDP code by
* Richard Woodruff <r-woodruff2 at ti.com>
* Syed Mohammed Khasim <khasim at ti.com>
- *
*/
+#include <command.h>
#include <twl4030.h>
+#include <linux/delay.h>
+#include <linux/printk.h>
/*
* Power Reset
void twl4030_power_reset_init(void)
{
u8 val = 0;
- if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER, &val,
- TWL4030_PM_MASTER_P1_SW_EVENTS)) {
+ if (twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_P1_SW_EVENTS, &val)) {
printf("Error:TWL4030: failed to read the power register\n");
printf("Could not initialize hardware reset\n");
} else {
val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;
- if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, val,
- TWL4030_PM_MASTER_P1_SW_EVENTS)) {
+ if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_P1_SW_EVENTS, val)) {
printf("Error:TWL4030: failed to write the power register\n");
printf("Could not initialize hardware reset\n");
}
}
}
+/*
+ * Power off
+ */
+void twl4030_power_off(void)
+{
+ u8 data;
+
+ /* PM master unlock (CFG and TST keys) */
+
+ data = 0xCE;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_PROTECT_KEY, data);
+ data = 0xEC;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_PROTECT_KEY, data);
+
+ /* VBAT start disable */
+
+ twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_P1_TRANSITION, &data);
+ data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_P1_TRANSITION, data);
+
+ twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_P2_TRANSITION, &data);
+ data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_P2_TRANSITION, data);
+
+ twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_P3_TRANSITION, &data);
+ data &= ~TWL4030_PM_MASTER_CFG_TRANSITION_STARTON_VBAT;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_P3_TRANSITION, data);
+
+ /* High jitter for PWRANA2 */
+
+ twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_PWRANA2, &data);
+ data &= ~(TWL4030_PM_MASTER_CFG_PWRANA2_LOJIT0_LOWV |
+ TWL4030_PM_MASTER_CFG_PWRANA2_LOJIT1_LOWV);
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_CFG_PWRANA2, data);
+
+ /* PM master lock */
+
+ data = 0xFF;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_PROTECT_KEY, data);
+
+ /* Power off */
+
+ twl4030_i2c_read_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_P1_SW_EVENTS, &data);
+ data |= TWL4030_PM_MASTER_SW_EVENTS_DEVOFF;
+ twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+ TWL4030_PM_MASTER_P1_SW_EVENTS, data);
+}
+
/*
* Set Device Group and Voltage
*/
int ret;
/* Select the Voltage */
- ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_val,
- vsel_reg);
+ ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_reg,
+ vsel_val);
if (ret != 0) {
printf("Could not write vsel to reg %02x (%d)\n",
vsel_reg, ret);
}
/* Select the Device Group (enable the supply if dev_grp_sel != 0) */
- ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp_sel,
- dev_grp);
+ ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp,
+ dev_grp_sel);
if (ret != 0)
printf("Could not write grp_sel to reg %02x (%d)\n",
dev_grp, ret);
TWL4030_PM_RECEIVER_DEV_GRP_P1);
}
-void twl4030_power_mmc_init(void)
+void twl4030_power_mmc_init(int dev_index)
{
- /* Set VMMC1 to 3.15 Volts */
- twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED,
- TWL4030_PM_RECEIVER_VMMC1_VSEL_32,
- TWL4030_PM_RECEIVER_VMMC1_DEV_GRP,
- TWL4030_PM_RECEIVER_DEV_GRP_P1);
+ if (dev_index == 0) {
+ /* Set VMMC1 to 3.15 Volts */
+ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED,
+ TWL4030_PM_RECEIVER_VMMC1_VSEL_32,
+ TWL4030_PM_RECEIVER_VMMC1_DEV_GRP,
+ TWL4030_PM_RECEIVER_DEV_GRP_P1);
+
+ mdelay(100); /* ramp-up delay from Linux code */
+ } else if (dev_index == 1) {
+ /* Set VMMC2 to 3.15 Volts */
+ twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC2_DEDICATED,
+ TWL4030_PM_RECEIVER_VMMC2_VSEL_32,
+ TWL4030_PM_RECEIVER_VMMC2_DEV_GRP,
+ TWL4030_PM_RECEIVER_DEV_GRP_P1);
+
+ mdelay(100); /* ramp-up delay from Linux code */
+ }
+}
+
+#ifdef CONFIG_CMD_POWEROFF
+int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ twl4030_power_off();
+
+ return 0;
+}
+#endif
+
+#if CONFIG_IS_ENABLED(DM_I2C)
+int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+ if (ret) {
+ pr_err("unable to get I2C bus. ret %d\n", ret);
+ return ret;
+ }
+ ret = dm_i2c_reg_write(dev, reg, val);
+ if (ret) {
+ pr_err("writing to twl4030 failed. ret %d\n", ret);
+ return ret;
+ }
+ return 0;
+}
+
+int twl4030_i2c_read(u8 chip_no, u8 reg, u8 *valp, int len)
+{
+ struct udevice *dev;
+ int ret;
+
+ ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+ if (ret) {
+ pr_err("unable to get I2C bus. ret %d\n", ret);
+ return ret;
+ }
+ ret = dm_i2c_read(dev, reg, valp, len);
+ if (ret) {
+ pr_err("reading from twl4030 failed. ret %d\n", ret);
+ return ret;
+ }
+ return 0;
}
+#endif
projects / u-boot.git / blobdiff