Added support for PMIC TPS65224. Includes driver for pmic,
and disabling Watchdog.
Signed-off-by: Bhargav Raviprakash <bharga...@ltts.com>
---
drivers/power/pmic/Kconfig | 6 ++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/tps65224.c | 141 ++++++++++++++++++++++++++++++++++
include/power/tps65224.h | 54 +++++++++++++
4 files changed, 202 insertions(+)
create mode 100644 drivers/power/pmic/tps65224.c
create mode 100644 include/power/tps65224.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 4a6f0ce093..b06bd31823 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -378,6 +378,12 @@ config PMIC_TPS65941
The TPS65941 is a PMIC containing a bunch of SMPS & LDOs.
This driver binds the pmic children.
+config PMIC_TPS65224
+ bool "Enable driver for Texas Instruments TPS65224 PMIC"
+ help
+ The TPS65224 is a PMIC containing a bunch of SMPS & LDOs.
+ This driver binds the pmic children.
+
config PMIC_TPS65219
bool "Enable driver for Texas Instruments TPS65219 PMIC"
depends on DM_PMIC
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 0b3b3d62d0..cec16e57d3 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_PMIC_STPMIC1) += stpmic1.o
obj-$(CONFIG_PMIC_TPS65217) += pmic_tps65217.o
obj-$(CONFIG_PMIC_TPS65219) += tps65219.o
obj-$(CONFIG_PMIC_TPS65941) += tps65941.o
+obj-$(CONFIG_PMIC_TPS65224) += tps65224.o
obj-$(CONFIG_POWER_TPS65218) += pmic_tps65218.o
ifeq ($(CONFIG_$(SPL_)POWER_LEGACY),y)
diff --git a/drivers/power/pmic/tps65224.c b/drivers/power/pmic/tps65224.c
new file mode 100644
index 0000000000..450769de61
--- /dev/null
+++ b/drivers/power/pmic/tps65224.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2019 Texas Instruments Incorporated, <www.ti.com>
+ */
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <log.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+#include <power/tps65224.h>
+#include <dm/device.h>
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "ldo", .driver = TPS65224_LDO_DRIVER },
+ { .prefix = "buck", .driver = TPS65224_BUCK_DRIVER },
+ { },
+};
+
+static int tps65224_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ pr_err("write error to device: %p register: %#x!\n", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int tps65224_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ pr_err("read error from device: %p register: %#x!\n", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int tps65224_bind(struct udevice *dev)
+{
+ ofnode regulators_node;
+ int children;
+
+ if (dev->driver_data == TPS65224_WD)
+ return 0;
+
+ regulators_node = dev_read_subnode(dev, "regulators");
+ if (!ofnode_valid(regulators_node)) {
+ debug("%s: %s regulators subnode not found!\n", __func__,
+ dev->name);
+ return -ENXIO;
+ }
+
+ debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
+
+ children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+ if (!children)
+ printf("%s: %s - no child found\n", __func__, dev->name);
+
+ /* Probe all the child devices */
+ return dm_scan_fdt_dev(dev);
+}
+
+static int stop_watchdog(struct udevice *wd_i2c_dev)
+{
+ int ret;
+
+ /* Maintain WD long window */
+ ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_MODE_REG);
+ if (ret < 0) {
+ debug("failed to read i2c reg (%d)\n", ret);
+ return ret;
+ }
+
+ ret &= ~TPS65224_WD_PWRHOLD_MASK;
+ ret |= TPS65224_WD_PWRHOLD_MASK;
+ ret = dm_i2c_reg_write(wd_i2c_dev, TPS65224_WD_MODE_REG, ret);
+ if (ret) {
+ debug("%s: %s write WD_PWRHOLD fail!\n", __func__,
wd_i2c_dev->name);
+ return ret;
+ }
+
+ ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_MODE_REG);
+ if (ret < 0) {
+ debug("failed to read back i2c reg (%d)\n", ret);
+ return ret;
+ }
+
+ /* Disable WD */
+ ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_THR_CFG);
+ if (ret < 0) {
+ debug("failed to read i2c reg (%d)\n", ret);
+ return ret;
+ }
+
+ ret &= ~TPS65224_WD_EN_MASK;
+ ret = dm_i2c_reg_write(wd_i2c_dev, TPS65224_WD_THR_CFG, ret);
+ if (ret) {
+ debug("%s: %s write WD_EN fail!\n", __func__, wd_i2c_dev->name);
+ return ret;
+ }
+
+ ret = dm_i2c_reg_read(wd_i2c_dev, TPS65224_WD_THR_CFG);
+ if (ret < 0) {
+ debug("failed to read back i2c reg (%d)\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tps65224_probe(struct udevice *dev)
+{
+ if (dev->driver_data == TPS65224_WD)
+ return stop_watchdog(dev);
+
+ return 0;
+}
+
+static struct dm_pmic_ops tps65224_ops = {
+ .read = tps65224_read,
+ .write = tps65224_write,
+};
+
+static const struct udevice_id tps65224_ids[] = {
+ { .compatible = "ti,tps65224", .data = TPS65224 },
+ { .compatible = "ti,tps65224_watchdog", .data = TPS65224_WD },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_tps65224) = {
+ .name = "tps65224_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = tps65224_ids,
+ .bind = tps65224_bind,
+ .probe = tps65224_probe,
+ .ops = &tps65224_ops,
+};
diff --git a/include/power/tps65224.h b/include/power/tps65224.h
new file mode 100644
index 0000000000..7b52796a64
--- /dev/null
+++ b/include/power/tps65224.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef _POWER_TPS65224_H_
+#define _POWER_TPS65224_H_
+
+#define TPS65224 0x0
+#define TPS65224_WD 0x20
+
+/* I2C device address for pmic tps65224 */
+#define TPS65224_I2C_ADDR (0x12 >> 1)
+#define TPS65224_LDO_NUM 3
+#define TPS65224_BUCK_NUM 4
+
+/* Drivers name */
+#define TPS65224_LDO_DRIVER "tps65224_ldo"
+#define TPS65224_BUCK_DRIVER "tps65224_buck"
+
+#define TPS65224_BUCK_VOLT_MASK 0xFF
+#define TPS65224_BUCK1_VOLT_MAX_HEX 0xFD
+#define TPS65224_BUCK234_VOLT_MAX_HEX 0x45
+#define TPS65224_BUCK_VOLT_MAX 3300000
+#define TPS65224_BUCK_MODE_MASK 0x1
+
+#define TPS65224_LDO_VOLT_MASK (0x3F << 1)
+#define TPS65224_LDO_VOLT_MAX_HEX 0x3A
+#define TPS65224_LDO_VOLT_MIN_HEX 0x4
+#define TPS65224_LDO1_VOLT_MAX 3300000
+#define TPS65224_LDO23_VOLT_MAX 3400000
+#define TPS65224_LDO_MODE_MASK 0x1
+#define TPS65224_LDO_BYPASS_EN 0x80
+#define TP65224_BUCK_CONF_SLEW_MASK 0x3
+
+/* BYPASS is bit7 of VOUT TPS65224_LDO_BYP_MASK */
+#define TPS65224_LDO123_BYP_CONFIG 7
+
+#define TPS65224_LDO123_VOLT_BYP_MIN 2200000
+#define TPS65224_LDO123_VOLT_BYP_MAX 3600000
+#define TPS65224_LDO1_VOLT_MIN 1200000
+#define TPS65224_LDO23_VOLT_MIN 600000
+#define TPS65224_LDO4_VOLT_MIN 1200000
+#define TPS65224_LDO1_VSET_MIN 0x0C
+#define TPS65224_LDO23_VSET_MIN 0x00
+#define TPS65224_LDO123_VSET_MIN 0x0
+#define TPS65224_LDO1_VSET_MAX 0x36
+#define TPS65224_LDO23_VSET_MAX 0x38
+#define TPS65224_LDO123_STEP 50000
+#define TPS65224_LDO4_STEP 25000
+
+#define TPS65224_WD_MODE_REG 0x406
+#define TPS65224_WD_PWRHOLD_MASK BIT(2)
+#define TPS65224_WD_THR_CFG 0x409
+#define TPS65224_WD_EN_MASK BIT(6)
+
+#endif // _POWER_TPS65224_H_
--
2.25.1
