+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2009 Wind River Systems, Inc.
* Tom Rix <Tom.Rix at windriver.com>
*
- * SPDX-License-Identifier: GPL-2.0+
- *
* twl4030_power_reset_init is derived from code on omapzoom,
* git://git.omapzoom.com/repo/u-boot.git
*
}
}
+/*
+ * 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
*/
mdelay(100); /* ramp-up delay from Linux code */
}
}
+
+#ifdef CONFIG_CMD_POWEROFF
+int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ twl4030_power_off();
+
+ return 0;
+}
+#endif