power: pmic: add Ricoh RN5T567 PMIC support

Add device model enabled PMIC driver for Ricoh RN5T567 PMIC used
on Colibri iMX7.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

diff --git a/doc/device-tree-bindings/pmic/rn5t567.txt b/doc/device-tree-bindings/pmic/rn5t567.txt
new file mode 100644 (file)
index 0000000..e9e6885
--- /dev/null
+++ b/doc/device-tree-bindings/pmic/rn5t567.txt
@@ -0,0 +1,17 @@
+Ricoh RN5T567 PMIC
+
+This file describes the binding info for the PMIC driver.
+
+Required properties:
+- compatible: "ricoh,rn5t567"
+- reg: depending on strapping, e.g. 0x33
+
+With those two properties, the PMIC device can be used to read/write
+registers.
+
+Example:
+
+rn5t567@33 {
+       compatible = "ricoh,rn5t567";
+       reg = <0x33>;
+};

diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
index 69f8d51885c3c64bcb640f7aa516aaeedced65aa..13d293a93d30d2d439f72ddbd4f931df10396f85 100644 (file)
--- a/drivers/power/pmic/Kconfig
+++ b/drivers/power/pmic/Kconfig
@@ -127,6 +127,14 @@ config PMIC_S5M8767
        driver provides basic register access and sets up the attached
        regulators if regulator support is enabled.
 
+config PMIC_RN5T567
+       bool "Enable driver for Ricoh RN5T567 PMIC"
+       depends on DM_PMIC
+       ---help---
+       The RN5T567 is a PMIC with 4 step-down DC/DC converters, 5 LDO
+       regulators Real-Time Clock and 4 GPIOs. This driver provides
+       register access only.
+
 config PMIC_TPS65090
        bool "Enable driver for Texas Instruments TPS65090 PMIC"
        depends on DM_PMIC

diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 52b4f711fbf1da6ac0cf81cdf84e5a240d130201..37d9eb55991f4348a7f8cdde2e90a96a6c8fd66c 100644 (file)
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
 obj-$(CONFIG_PMIC_ACT8846) += act8846.o
 obj-$(CONFIG_PMIC_PM8916) += pm8916.o
 obj-$(CONFIG_PMIC_RK808) += rk808.o
+obj-$(CONFIG_PMIC_RN5T567) += rn5t567.o
 obj-$(CONFIG_PMIC_TPS65090) += tps65090.o
 obj-$(CONFIG_PMIC_S5M8767) += s5m8767.o
 

diff --git a/drivers/power/pmic/rn5t567.c b/drivers/power/pmic/rn5t567.c
new file mode 100644 (file)
index 0000000..001e695
--- /dev/null
+++ b/drivers/power/pmic/rn5t567.c
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2016 Toradex AG
+ * Stefan Agner <stefan.agner@toradex.com>
+ *
+ * SPDX-License-Identifier:      GPL-2.0+
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <errno.h>
+#include <fdtdec.h>
+#include <libfdt.h>
+#include <power/rn5t567_pmic.h>
+#include <power/pmic.h>
+
+static int rn5t567_reg_count(struct udevice *dev)
+{
+       return RN5T567_NUM_OF_REGS;
+}
+
+static int rn5t567_write(struct udevice *dev, uint reg, const uint8_t *buff,
+                         int len)
+{
+       int ret;
+
+       ret = dm_i2c_write(dev, reg, buff, len);
+       if (ret) {
+               debug("write error to device: %p register: %#x!", dev, reg);
+               return ret;
+       }
+
+       return 0;
+}
+
+static int rn5t567_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+       int ret;
+
+       ret = dm_i2c_read(dev, reg, buff, len);
+       if (ret) {
+               debug("read error from device: %p register: %#x!", dev, reg);
+               return ret;
+       }
+
+       return 0;
+}
+
+static struct dm_pmic_ops rn5t567_ops = {
+       .reg_count = rn5t567_reg_count,
+       .read = rn5t567_read,
+       .write = rn5t567_write,
+};
+
+static const struct udevice_id rn5t567_ids[] = {
+       { .compatible = "ricoh,rn5t567" },
+       { }
+};
+
+U_BOOT_DRIVER(pmic_rn5t567) = {
+       .name = "rn5t567 pmic",
+       .id = UCLASS_PMIC,
+       .of_match = rn5t567_ids,
+       .ops = &rn5t567_ops,
+};

diff --git a/include/power/rn5t567_pmic.h b/include/power/rn5t567_pmic.h
new file mode 100644 (file)
index 0000000..9ce601f
--- /dev/null
+++ b/include/power/rn5t567_pmic.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2016 Toradex AG
+ * Stefan Agner <stefan.agner@toradex.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+#ifndef __RN5T567_PMIC_H_
+#define __RN5T567_PMIC_H_
+
+/* RN5T567 registers */
+enum {
+       RN5T567_LSIVER          = 0x00,
+       RN5T567_OTPVER          = 0x01,
+       RN5T567_IODAC           = 0x02,
+       RN5T567_VINDAC          = 0x03,
+       RN5T567_OUT32KEN        = 0x05,
+
+       RN5T567_CPUCNT          = 0x06,
+
+       RN5T567_PSWR            = 0x07,
+       RN5T567_PONHIS          = 0x09,
+       RN5T567_POFFHIS         = 0x0A,
+       RN5T567_WATCHDOG        = 0x0B,
+       RN5T567_WATCHDOGCNT     = 0x0C,
+       RN5T567_PWRFUNC         = 0x0D,
+       RN5T567_SLPCNT          = 0x0E,
+       RN5T567_REPCNT          = 0x0F,
+       RN5T567_PWRONTIMSET     = 0x10,
+       RN5T567_NOETIMSETCNT    = 0x11,
+       RN5T567_PWRIREN         = 0x12,
+       RN5T567_PWRIRQ          = 0x13,
+       RN5T567_PWRMON          = 0x14,
+       RN5T567_PWRIRSEL        = 0x15,
+
+       RN5T567_DC1_SLOT        = 0x16,
+       RN5T567_DC2_SLOT        = 0x17,
+       RN5T567_DC3_SLOT        = 0x18,
+       RN5T567_DC4_SLOT        = 0x19,
+
+       RN5T567_LDO1_SLOT       = 0x1B,
+       RN5T567_LDO2_SLOT       = 0x1C,
+       RN5T567_LDO3_SLOT       = 0x1D,
+       RN5T567_LDO4_SLOT       = 0x1E,
+       RN5T567_LDO5_SLOT       = 0x1F,
+
+       RN5T567_PSO0_SLOT       = 0x25,
+       RN5T567_PSO1_SLOT       = 0x26,
+       RN5T567_PSO2_SLOT       = 0x27,
+       RN5T567_PSO3_SLOT       = 0x28,
+
+       RN5T567_LDORTC1_SLOT    = 0x2A,
+
+       RN5T567_DC1CTL          = 0x2C,
+       RN5T567_DC1CTL2         = 0x2D,
+       RN5T567_DC2CTL          = 0x2E,
+       RN5T567_DC2CTL2         = 0x2F,
+       RN5T567_DC3CTL          = 0x30,
+       RN5T567_DC3CTL2         = 0x31,
+       RN5T567_DC4CTL          = 0x32,
+       RN5T567_DC4CTL2         = 0x33,
+
+       RN5T567_DC1DAC          = 0x36,
+       RN5T567_DC2DAC          = 0x37,
+       RN5T567_DC3DAC          = 0x38,
+       RN5T567_DC4DAC          = 0x39,
+
+       RN5T567_DC1DAC_SLP      = 0x3B,
+       RN5T567_DC2DAC_SLP      = 0x3C,
+       RN5T567_DC3DAC_SLP      = 0x3D,
+       RN5T567_DC4DAC_SLP      = 0x3E,
+
+       RN5T567_DCIREN          = 0x40,
+       RN5T567_DCIRQ           = 0x41,
+       RN5T567_DCIRMON         = 0x42,
+
+       RN5T567_LDOEN1          = 0x44,
+       RN5T567_LDOEN2          = 0x45,
+       RN5T567_LDODIS1         = 0x46,
+
+       RN5T567_LDO1DAC         = 0x4C,
+       RN5T567_LDO2DAC         = 0x4D,
+       RN5T567_LDO3DAC         = 0x4E,
+       RN5T567_LDO4DAC         = 0x4F,
+       RN5T567_LDO5DAC         = 0x50,
+
+       RN5T567_LDORTC1DAC      = 0x56,
+       RN5T567_LDORTC2DAC      = 0x57,
+
+       RN5T567_LDO1DAC_SLP     = 0x58,
+       RN5T567_LDO2DAC_SLP     = 0x59,
+       RN5T567_LDO3DAC_SLP     = 0x5A,
+       RN5T567_LDO4DAC_SLP     = 0x5B,
+       RN5T567_LDO5DAC_SLP     = 0x5C,
+
+       RN5T567_IOSEL           = 0x90,
+       RN5T567_IOOUT           = 0x91,
+       RN5T567_GPEDGE1         = 0x92,
+       RN5T567_EN_GPIR         = 0x94,
+       RN5T567_IR_GPR          = 0x95,
+       RN5T567_IR_GPF          = 0x96,
+       RN5T567_MON_IOIN        = 0x97,
+       RN5T567_GPLED_FUNC      = 0x98,
+       RN5T567_INTPOL          = 0x9C,
+       RN5T567_INTEN           = 0x9D,
+       RN5T567_INTMON          = 0x9E,
+
+       RN5T567_PREVINDAC       = 0xB0,
+       RN5T567_OVTEMP          = 0xBC,
+
+       RN5T567_NUM_OF_REGS     = 0xBF,
+};
+
+#endif