power: pmic/regulator: Add basic support for TPS65910
Texas Instrument's TPS65910 PMIC contains 3 buck DC-DC converts, one
boost DC-DC converter and 8 LDOs. This patch implements driver model
support for the TPS65910 PMIC and its regulators making the get/set
API for regulator value/enable available.
This patch depends on the patch "am33xx: Add a function to query MPU
voltage in uV" to build correctly. For boards relying on the DT
include file tps65910.dtsi the v3 patch "power: extend prefix match
to regulator-name property" and an appropriate regulator naming is
also required.
Signed-off-by: Felix Brack <fb@ltec.ch>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index e3f9e4d..5d49c93 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -201,3 +201,11 @@
The MC34VR500 is used in conjunction with the FSL T1 and LS1 series
SoC. It provides 4 buck DC-DC convertors and 5 LDOs, and it is accessed
via an I2C interface.
+
+config DM_PMIC_TPS65910
+ bool "Enable driver for Texas Instruments TPS65910 PMIC"
+ depends on DM_PMIC
+ ---help---
+ The TPS65910 is a PMIC containing 3 buck DC-DC converters, one boost
+ DC-DC converter, 8 LDOs and a RTC. This driver binds the SMPS and LDO
+ pmic children.
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index f7bdfa5..7d6c583 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -19,6 +19,7 @@
obj-$(CONFIG_PMIC_RN5T567) += rn5t567.o
obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
+obj-$(CONFIG_DM_PMIC_TPS65910) += pmic_tps65910_dm.o
obj-$(CONFIG_$(SPL_)PMIC_PALMAS) += palmas.o
obj-$(CONFIG_$(SPL_)PMIC_LP873X) += lp873x.o
obj-$(CONFIG_$(SPL_)PMIC_LP87565) += lp87565.o
diff --git a/drivers/power/pmic/pmic_tps65910_dm.c b/drivers/power/pmic/pmic_tps65910_dm.c
new file mode 100644
index 0000000..0127ce3
--- /dev/null
+++ b/drivers/power/pmic/pmic_tps65910_dm.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) EETS GmbH, 2017, Felix Brack <f.brack@eets.ch>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+#include <power/tps65910_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "ldo_", .driver = TPS65910_LDO_DRIVER },
+ { .prefix = "buck_", .driver = TPS65910_BUCK_DRIVER },
+ { .prefix = "boost_", .driver = TPS65910_BOOST_DRIVER },
+ { },
+};
+
+static int pmic_tps65910_reg_count(struct udevice *dev)
+{
+ return TPS65910_NUM_REGS;
+}
+
+static int pmic_tps65910_write(struct udevice *dev, uint reg, const u8 *buffer,
+ int len)
+{
+ int ret;
+
+ ret = dm_i2c_write(dev, reg, buffer, len);
+ if (ret)
+ error("%s write error on register %02x\n", dev->name, reg);
+
+ return ret;
+}
+
+static int pmic_tps65910_read(struct udevice *dev, uint reg, u8 *buffer,
+ int len)
+{
+ int ret;
+
+ ret = dm_i2c_read(dev, reg, buffer, len);
+ if (ret)
+ error("%s read error on register %02x\n", dev->name, reg);
+
+ return ret;
+}
+
+static int pmic_tps65910_bind(struct udevice *dev)
+{
+ ofnode regulators_node;
+ int children;
+
+ regulators_node = dev_read_subnode(dev, "regulators");
+ if (!ofnode_valid(regulators_node)) {
+ debug("%s regulators subnode not found\n", dev->name);
+ return -EINVAL;
+ }
+
+ children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+ if (!children)
+ debug("%s has no children (regulators)\n", dev->name);
+
+ return 0;
+}
+
+static int pmic_tps65910_probe(struct udevice *dev)
+{
+ /* use I2C control interface instead of I2C smartreflex interface to
+ * access smartrefelex registers VDD1_OP_REG, VDD1_SR_REG, VDD2_OP_REG
+ * and VDD2_SR_REG
+ */
+ return pmic_clrsetbits(dev, TPS65910_REG_DEVICE_CTRL, 0,
+ TPS65910_I2C_SEL_MASK);
+}
+
+static struct dm_pmic_ops pmic_tps65910_ops = {
+ .reg_count = pmic_tps65910_reg_count,
+ .read = pmic_tps65910_read,
+ .write = pmic_tps65910_write,
+};
+
+static const struct udevice_id pmic_tps65910_match[] = {
+ { .compatible = "ti,tps65910" },
+ { /* sentinel */ }
+};
+
+U_BOOT_DRIVER(pmic_tps65910) = {
+ .name = "pmic_tps65910",
+ .id = UCLASS_PMIC,
+ .of_match = pmic_tps65910_match,
+ .bind = pmic_tps65910_bind,
+ .probe = pmic_tps65910_probe,
+ .ops = &pmic_tps65910_ops,
+};