Add support to bind the regulators/child nodes with the pmic.
Signed-off-by: Keerthy <j-keer...@ti.com>
Reviewed-by: Simon Glass <s...@chromium.org>
---
Changes in v3:
* Used dm_i2c_write and dm_i2c_read in place of dm_i2c_reg_write
dm_i2c_reg_read respectively.
Changes in v2:
* Added pmic read/write functions.
drivers/power/pmic/Kconfig | 7 ++++
drivers/power/pmic/Makefile | 1 +
drivers/power/pmic/lp873x.c | 86 +++++++++++++++++++++++++++++++++++++++++++++
include/power/lp873x.h | 19 ++++++++++
4 files changed, 113 insertions(+)
create mode 100644 drivers/power/pmic/lp873x.c
create mode 100644 include/power/lp873x.h
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 92931c5..00fcacb 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -142,3 +142,10 @@ config PMIC_PALMAS
---help---
The PALMAS is a PMIC containing several LDOs, SMPS.
This driver binds the pmic children.
+
+config PMIC_LP873X
+ bool "Enable driver for Texas Instruments LP873X PMIC"
+ depends on DM_PMIC
+ ---help---
+ The LP873X is a PMIC containing couple of LDOs and couple of SMPS.
+ This driver binds the pmic children.
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 828c0cf..334a24f 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_PMIC_RK808) += rk808.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
obj-$(CONFIG_$(SPL_)PMIC_PALMAS) += palmas.o
+obj-$(CONFIG_$(SPL_)PMIC_LP873X) += lp873x.o
obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o
diff --git a/drivers/power/pmic/lp873x.c b/drivers/power/pmic/lp873x.c
new file mode 100644
index 0000000..307f96b
--- /dev/null
+++ b/drivers/power/pmic/lp873x.c
@@ -0,0 +1,86 @@
+/*
+ * (C) Copyright 2016 Texas Instruments Incorporated, <www.ti.com>
+ * Keerthy <j-keer...@ti.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+#include <power/lp873x.h>
+#include <dm/device.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "ldo", .driver = LP873X_LDO_DRIVER },
+ { .prefix = "buck", .driver = LP873X_BUCK_DRIVER },
+ { },
+};
+
+static int lp873x_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ error("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int lp873x_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ error("read error from device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int lp873x_bind(struct udevice *dev)
+{
+ int regulators_node;
+ const void *blob = gd->fdt_blob;
+ int children;
+ int node = dev->of_offset;
+
+ regulators_node = fdt_subnode_offset(blob, node, "regulators");
+
+ if (regulators_node <= 0) {
+ printf("%s: %s reg subnode not found!", __func__, dev->name);
+ return -ENXIO;
+ }
+
+ children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+ if (!children)
+ printf("%s: %s - no child found\n", __func__, dev->name);
+
+ /* Always return success for this device */
+ return 0;
+}
+
+static struct dm_pmic_ops lp873x_ops = {
+ .read = lp873x_read,
+ .write = lp873x_write,
+};
+
+static const struct udevice_id lp873x_ids[] = {
+ { .compatible = "ti,lp8732", .data = LP8732 },
+ { .compatible = "ti,lp8733" , .data = LP8733 },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_lp873x) = {
+ .name = "lp873x_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = lp873x_ids,
+ .bind = lp873x_bind,
+ .ops = &lp873x_ops,
+};
diff --git a/include/power/lp873x.h b/include/power/lp873x.h
new file mode 100644
index 0000000..e0c0711
--- /dev/null
+++ b/include/power/lp873x.h
@@ -0,0 +1,19 @@
+#define LP8732 0x0
+#define LP8733 0x1
+
+#define LP873X_LDO_NUM 2
+#define LP873X_BUCK_NUM 2
+
+/* Drivers name */
+#define LP873X_LDO_DRIVER "lp873x_ldo"
+#define LP873X_BUCK_DRIVER "lp873x_buck"
+
+#define LP873X_BUCK_VOLT_MASK 0xFF
+#define LP873X_BUCK_VOLT_MAX_HEX 0xFF
+#define LP873X_BUCK_VOLT_MAX 3360000
+#define LP873X_BUCK_MODE_MASK 0x1
+
+#define LP873X_LDO_VOLT_MASK 0x1F
+#define LP873X_LDO_VOLT_MAX_HEX 0x19
+#define LP873X_LDO_VOLT_MAX 3300000
+#define LP873X_LDO_MODE_MASK 0x1
--
1.9.1
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