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authorYe Li <ye.li@nxp.com>2019-10-15 02:15:18 -0700
committerStefano Babic <sbabic@denx.de>2020-01-08 13:20:08 +0100
commit22172f6b7f7fa55e080ad4d2ebb0d797611d2ffa (patch)
treef293b9f7a1054bb03c7b736b9e17823a3629205a /drivers/power
parentc86987d0670fdb5d40fae2daa861baa5ab959c6a (diff)
power: Add new PMIC PCA9450 driver
PCA9450 PMIC series is used to support iMX8MM (PCA9450A) and iMX8MN (PCA9450B). Add the PMIC driver for both PCA9450A and PCA9450B. Signed-off-by: Robin Gong <yibin.gong@nxp.com> Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/pmic/Kconfig7
-rw-r--r--drivers/power/pmic/Makefile2
-rw-r--r--drivers/power/pmic/pca9450.c93
-rw-r--r--drivers/power/pmic/pmic_pca9450.c50
4 files changed, 152 insertions, 0 deletions
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index b4bf018674..df9372c239 100644
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -77,6 +77,13 @@ config DM_PMIC_FAN53555
The driver implements read/write operations for use with the FAN53555
regulator driver and binds the regulator driver to its node.
+config DM_PMIC_PCA9450
+ bool "Enable Driver Model for PMIC PCA9450"
+ depends on DM_PMIC
+ help
+ This config enables implementation of driver-model pmic uclass features
+ for PMIC PCA9450. The driver implements read/write operations.
+
config DM_PMIC_PFUZE100
bool "Enable Driver Model for PMIC PFUZE100"
depends on DM_PMIC
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index ec64327805..7b6cb0ee1b 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_DM_PMIC_MAX8998) += max8998.o
obj-$(CONFIG_DM_PMIC_MC34708) += mc34708.o
obj-$(CONFIG_$(SPL_)DM_PMIC_BD71837) += bd71837.o
obj-$(CONFIG_$(SPL_)DM_PMIC_PFUZE100) += pfuze100.o
+obj-$(CONFIG_$(SPL_)DM_PMIC_PCA9450) += pca9450.o
obj-$(CONFIG_PMIC_S2MPS11) += s2mps11.o
obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_PMIC_ACT8846) += act8846.o
@@ -31,6 +32,7 @@ obj-$(CONFIG_POWER_MAX77696) += pmic_max77696.o
obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
obj-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o
+obj-$(CONFIG_POWER_PCA9450) += pmic_pca9450.o
obj-$(CONFIG_POWER_PFUZE100) += pmic_pfuze100.o
obj-$(CONFIG_POWER_PFUZE3000) += pmic_pfuze3000.o
obj-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o
diff --git a/drivers/power/pmic/pca9450.c b/drivers/power/pmic/pca9450.c
new file mode 100644
index 0000000000..77986c47d7
--- /dev/null
+++ b/drivers/power/pmic/pca9450.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 NXP
+ */
+
+#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/pca9450.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ /* buck */
+ { .prefix = "b", .driver = PCA9450_REGULATOR_DRIVER},
+ /* ldo */
+ { .prefix = "l", .driver = PCA9450_REGULATOR_DRIVER},
+ { },
+};
+
+static int pca9450_reg_count(struct udevice *dev)
+{
+ return PCA9450_REG_NUM;
+}
+
+static int pca9450_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!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int pca9450_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!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int pca9450_bind(struct udevice *dev)
+{
+ int children;
+ ofnode regulators_node;
+
+ regulators_node = dev_read_subnode(dev, "regulators");
+ if (!ofnode_valid(regulators_node)) {
+ debug("%s: %s regulators subnode not found!", __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)
+ debug("%s: %s - no child found\n", __func__, dev->name);
+
+ /* Always return success for this device */
+ return 0;
+}
+
+static struct dm_pmic_ops pca9450_ops = {
+ .reg_count = pca9450_reg_count,
+ .read = pca9450_read,
+ .write = pca9450_write,
+};
+
+static const struct udevice_id pca9450_ids[] = {
+ { .compatible = "nxp,pca9450a", .data = 0x35, },
+ { .compatible = "nxp,pca9450b", .data = 0x25, },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_pca9450) = {
+ .name = "pca9450 pmic",
+ .id = UCLASS_PMIC,
+ .of_match = pca9450_ids,
+ .bind = pca9450_bind,
+ .ops = &pca9450_ops,
+};
diff --git a/drivers/power/pmic/pmic_pca9450.c b/drivers/power/pmic/pmic_pca9450.c
new file mode 100644
index 0000000000..67a9090200
--- /dev/null
+++ b/drivers/power/pmic/pmic_pca9450.c
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2019 NXP
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <i2c.h>
+#include <power/pmic.h>
+#include <power/pca9450.h>
+
+static const char pca9450_name[] = "PCA9450";
+
+int power_pca9450a_init(unsigned char bus)
+{
+ struct pmic *p = pmic_alloc();
+
+ if (!p) {
+ printf("%s: POWER allocation error!\n", __func__);
+ return -ENOMEM;
+ }
+
+ p->name = pca9450_name;
+ p->interface = PMIC_I2C;
+ p->number_of_regs = PCA9450_REG_NUM;
+ p->hw.i2c.addr = 0x35;
+ p->hw.i2c.tx_num = 1;
+ p->bus = bus;
+
+ return 0;
+}
+
+int power_pca9450b_init(unsigned char bus)
+{
+ struct pmic *p = pmic_alloc();
+
+ if (!p) {
+ printf("%s: POWER allocation error!\n", __func__);
+ return -ENOMEM;
+ }
+
+ p->name = pca9450_name;
+ p->interface = PMIC_I2C;
+ p->number_of_regs = PCA9450_REG_NUM;
+ p->hw.i2c.addr = 0x25;
+ p->hw.i2c.tx_num = 1;
+ p->bus = bus;
+
+ return 0;
+}