power: add driver for the TPS65219 PMIC

The TPS65219 I2S PMIC features 3 Buck converters and 4 linear regulators,
2 GPOs, 1 GPIO, and 3 multi-function-pin.

This adds the PMIC driver, loading the regulator sub-nodes.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>

diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 953c92e..bb39600 100644 (file)
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -367,6 +367,12 @@ config PMIC_TPS65941
        The TPS65941 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
+       help
+       The TPS65219 is a PMIC containing a bunch of SMPS & LDOs.
+       This driver binds the pmic children.
 endif
 
 config PMIC_TPS65217

diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 584d6e0..f73b326 100644 (file)
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -43,3 +43,4 @@ obj-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o
 obj-$(CONFIG_POWER_HI6553) += pmic_hi6553.o
 obj-$(CONFIG_POWER_MC34VR500) += pmic_mc34vr500.o
 obj-$(CONFIG_PMIC_TPS65941) += tps65941.o
+obj-$(CONFIG_PMIC_TPS65219) += tps65219.o

diff --git a/drivers/power/pmic/tps65219.c b/drivers/power/pmic/tps65219.c
new file mode 100644 (file)
index 0000000..9462afe
--- /dev/null
+++ b/drivers/power/pmic/tps65219.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2022 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#include <common.h>
+#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/tps65219.h>
+#include <dm/device.h>
+
+static const struct pmic_child_info pmic_children_info[] = {
+       { .prefix = "ldo", .driver = TPS65219_LDO_DRIVER },
+       { .prefix = "buck", .driver = TPS65219_BUCK_DRIVER },
+       { },
+};
+
+static int tps65219_reg_count(struct udevice *dev)
+{
+       return 0x41;
+}
+
+static int tps65219_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 tps65219_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 tps65219_bind(struct udevice *dev)
+{
+       ofnode regulators_node;
+       int children;
+
+       regulators_node = dev_read_subnode(dev, "regulators");
+       if (!ofnode_valid(regulators_node)) {
+               debug("%s: %s regulators subnode not found!\n", __func__,
+                     dev->name);
+       }
+
+       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 struct dm_pmic_ops tps65219_ops = {
+       .reg_count = tps65219_reg_count,
+       .read = tps65219_read,
+       .write = tps65219_write,
+};
+
+static const struct udevice_id tps65219_ids[] = {
+       { .compatible = "ti,tps65219" },
+       { }
+};
+
+U_BOOT_DRIVER(pmic_tps65219) = {
+       .name = "tps65219_pmic",
+       .id = UCLASS_PMIC,
+       .of_match = tps65219_ids,
+       .bind = tps65219_bind,
+       .ops = &tps65219_ops,
+};

diff --git a/include/power/tps65219.h b/include/power/tps65219.h
new file mode 100644 (file)
index 0000000..aa81b92
--- /dev/null
+++ b/include/power/tps65219.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2022 BayLibre, SAS
+ * Author: Neil Armstrong <narmstrong@baylibre.com>
+ */
+
+#ifndef TPS65219_H
+#define TPS65219_H
+
+/* I2C device address for pmic tps65219 */
+#define TPS65219_I2C_ADDR              0x30
+#define TPS65219_LDO_NUM               4
+#define TPS65219_BUCK_NUM              3
+
+/* Drivers name */
+#define TPS65219_LDO_DRIVER            "tps65219_ldo"
+#define TPS65219_BUCK_DRIVER           "tps65219_buck"
+
+#define TPS65219_VOLT_MASK             0x3F
+#define TPS65219_BUCK_VOLT_MAX         3400000
+
+#define TPS65219_ENABLE_CTRL_REG       0x2
+
+#define TPS65219_BUCK1_VOUT_REG                0xa
+#define TPS65219_BUCK2_VOUT_REG                0x9
+#define TPS65219_BUCK3_VOUT_REG                0x8
+
+#define TPS65219_LDO1_VOUT_REG         0x7
+#define TPS65219_LDO2_VOUT_REG         0x6
+
+#define TPS65219_LDO12_BYP_CONFIG      6
+
+#define TPS65219_LDO3_VOUT_REG         0x5
+#define TPS65219_LDO4_VOUT_REG         0x4
+
+#define TPS65219_LDO12_VOLT_BYP_MIN    1500000
+#define TPS65219_LDO12_VOLT_MIN                 600000
+#define TPS65219_LDO12_VOLT_MAX                3400000
+#define TPS65219_LDO12_VOLT_REG_MIN    0
+#define TPS65219_LDO12_VOLT_REG_MAX    0x56
+#define TPS65219_LDO34_VOLT_MIN                1200000
+#define TPS65219_LDO34_VOLT_MAX                3300000
+#define TPS65219_LDO34_VOLT_REG_MIN    0x12
+#define TPS65219_LDO34_VOLT_REG_MAX    0x54
+
+#endif /* TPS65219_H */