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.
 
        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
 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-$(CONFIG_PMIC_ACT8846) += act8846.o
 obj-$(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
 
 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