[U-Boot] [PATCH v2 3/9] sunxi: power: axp818: add support for axp818 driver

Vishnu Patekar
2015-11-28T17:07:21Z

AXP818 is rsb based PMIC and used on Allwinner A83T H8 Homlet dev board.
It's registers are different and calculating reg config is different than
that of earlier axp power ICs.

DCDC1, DCDC2, DCDC3 and DCDC5 is implemented at the moment.
all other voltages can be added subsequently.
AXP datasheet is uploaded to wiki:
http://linux-sunxi.org/File:AXP818_datasheet_Revision1.0.pdf

Signed-off-by: Vishnu Patekar <vishnupatekar0510@gmail.com>
---
drivers/power/Kconfig | 44 ++++++++++++-----
drivers/power/Makefile | 1 +
drivers/power/axp818.c | 132 +++++++++++++++++++++++++++++++++++++++++++++++++
include/axp818.h | 75 ++++++++++++++++++++++++++++
include/axp_pmic.h | 3 ++
5 files changed, 242 insertions(+), 13 deletions(-)
create mode 100644 drivers/power/axp818.c
create mode 100644 include/axp818.h

diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 809f8f1..32530f9 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -8,7 +8,8 @@ choice
prompt "Select Sunxi PMIC Variant"
depends on ARCH_SUNXI
default AXP209_POWER if MACH_SUN4I || MACH_SUN5I || MACH_SUN7I
- default AXP221_POWER if MACH_SUN6I || MACH_SUN8I
+ default AXP221_POWER if MACH_SUN6I || MACH_SUN8I_A23 || MACH_SUN8I_A33
+ default AXP818_POWER if MACH_SUN8I_A83T

config SUNXI_NO_PMIC
boolean "board without a pmic"
@@ -31,27 +32,37 @@ config AXP209_POWER

config AXP221_POWER
boolean "axp221 / axp223 pmic support"
- depends on MACH_SUN6I || MACH_SUN8I
+ depends on MACH_SUN6I || MACH_SUN8I_A23 || MACH_SUN8I_A33
---help---
Select this to enable support for the axp221/axp223 pmic found on most
A23 and A31 boards.

+config AXP818_POWER
+ boolean "axp818 pmic support"
+ depends on MACH_SUN8I_A83T
+ ---help---
+ Say y here to enable support for the axp818 pmic found on
+ A83T dev board.
+
endchoice

config AXP_DCDC1_VOLT
int "axp pmic dcdc1 voltage"
- depends on AXP221_POWER
+ depends on AXP221_POWER || AXP818_POWER
+ default 3300 if AXP818_POWER
default 3000 if MACH_SUN6I || MACH_SUN8I
---help---
Set the voltage (mV) to program the axp pmic dcdc1 at, set to 0 to
disable dcdc1. On A23 / A31 / A33 (axp221) boards dcdc1 is used for
generic 3.3V IO voltage for external devices like the lcd-panal and
sdcard interfaces, etc. On most boards dcdc1 is undervolted to 3.0V to
- safe battery. On A31 devices dcdc1 is also used for VCC-IO.
+ safe battery. On A31 devices dcdc1 is also used for VCC-IO. On A83T
+ dcdc1 is used for VCC-IO, nand, usb0, sd , etc.

config AXP_DCDC2_VOLT
int "axp pmic dcdc2 voltage"
- depends on AXP152_POWER || AXP209_POWER || AXP221_POWER
+ depends on AXP152_POWER || AXP209_POWER || AXP221_POWER || AXP818_POWER
+ default 900 if AXP818_POWER
default 1400 if AXP152_POWER || AXP209_POWER
default 1200 if MACH_SUN6I
default 1100 if MACH_SUN8I
@@ -61,10 +72,12 @@ config AXP_DCDC2_VOLT
On A10(s) / A13 / A20 boards dcdc2 is VDD-CPU and should be 1.4V.
On A31 boards dcdc2 is used for VDD-GPU and should be 1.2V.
On A23/A33 boards dcdc2 is used for VDD-SYS and should be 1.1V.
+ On A83T boards dcdc2 is used for VDD-CPUA(cluster 0) and should be 0.9V.

config AXP_DCDC3_VOLT
int "axp pmic dcdc3 voltage"
- depends on AXP152_POWER || AXP209_POWER || AXP221_POWER
+ depends on AXP152_POWER || AXP209_POWER || AXP221_POWER || AXP818_POWER
+ default 900 if AXP818_POWER
default 1500 if AXP152_POWER
default 1250 if AXP209_POWER
default 1200 if MACH_SUN6I || MACH_SUN8I
@@ -75,10 +88,11 @@ config AXP_DCDC3_VOLT
should be 1.25V.
On A10s boards with an axp152 dcdc3 is VCC-DRAM and should be 1.5V.
On A23 / A31 / A33 boards dcdc3 is VDD-CPU and should be 1.2V.
+ On A83T boards dcdc3 is used for VDD-CPUB(cluster 1) and should be 0.9V.

config AXP_DCDC4_VOLT
int "axp pmic dcdc4 voltage"
- depends on AXP152_POWER || AXP221_POWER
+ depends on AXP152_POWER || AXP221_POWER || AXP818_POWER
default 1250 if AXP152_POWER
default 1200 if MACH_SUN6I
default 0 if MACH_SUN8I
@@ -88,15 +102,18 @@ config AXP_DCDC4_VOLT
On A10s boards with an axp152 dcdc4 is VDD-INT-DLL and should be 1.25V.
On A31 boards dcdc4 is used for VDD-SYS and should be 1.2V.
On A23 / A33 boards dcdc4 is unused and should be disabled.
+ On A83T boards dcdc4 is used for VDD-GPU.

config AXP_DCDC5_VOLT
int "axp pmic dcdc5 voltage"
- depends on AXP221_POWER
+ depends on AXP221_POWER || AXP818_POWER
+ default 1800 if AXP818_POWER
default 1500 if MACH_SUN6I || MACH_SUN8I
---help---
Set the voltage (mV) to program the axp pmic dcdc5 at, set to 0 to
disable dcdc5.
- On A23 / A31 / A33 boards dcdc5 is VCC-DRAM and should be 1.5V.
+ On A23 / A31 / A33 / A83T boards dcdc5 is VCC-DRAM and should be 1.5V,
+ 1.8V for A83T.

config AXP_ALDO1_VOLT
int "axp pmic (a)ldo1 voltage"
@@ -111,7 +128,7 @@ config AXP_ALDO1_VOLT

config AXP_ALDO2_VOLT
int "axp pmic (a)ldo2 voltage"
- depends on AXP152_POWER || AXP209_POWER || AXP221_POWER
+ depends on AXP152_POWER || AXP209_POWER || AXP221_POWER || AXP818_POWER
default 3000 if AXP152_POWER || AXP209_POWER
default 0 if MACH_SUN6I
default 2500 if MACH_SUN8I
@@ -125,14 +142,15 @@ config AXP_ALDO2_VOLT

config AXP_ALDO3_VOLT
int "axp pmic (a)ldo3 voltage"
- depends on AXP209_POWER || AXP221_POWER
- default 0 if AXP209_POWER
+ depends on AXP209_POWER || AXP221_POWER || AXP818_POWER
+ default 0 if AXP209_POWER || AXP818_POWER
default 3000 if MACH_SUN6I || MACH_SUN8I
---help---
Set the voltage (mV) to program the axp pmic aldo3 at, set to 0 to
disable aldo3.
On A10(s) / A13 / A20 boards aldo3 should be 2.8V.
On A23 / A31 / A33 boards aldo3 is VCC-PLL and AVCC and should be 3.0V.
+ On A83T aldo3 is used for LVDS, DSI, MIPI, HDMI, etc.

config AXP_ALDO4_VOLT
int "axp pmic (a)ldo4 voltage"
@@ -171,7 +189,7 @@ config AXP_DLDO3_VOLT

config AXP_DLDO4_VOLT
int "axp pmic dldo4 voltage"
- depends on AXP221_POWER
+ depends on AXP221_POWER || AXP818_POWER
default 0
---help---
Set the voltage (mV) to program the axp pmic dldo4 at, set to 0 to
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index a2d3c04..0fdbca3 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -9,6 +9,7 @@ obj-$(CONFIG_AS3722_POWER) += as3722.o
obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_AXP221_POWER) += axp221.o
+obj-$(CONFIG_AXP818_POWER) += axp818.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o
obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o
diff --git a/drivers/power/axp818.c b/drivers/power/axp818.c
new file mode 100644
index 0000000..4b21a83
--- /dev/null
+++ b/drivers/power/axp818.c
@@ -0,0 +1,132 @@
+/*
+ * AXP818 driver based on AXP221 driver
+ *
+ *
+ * (C) Copyright 2015 Vishnu Patekar <vishnuptekar0510@gmail.com>
+ *
+ * Based on axp221.c
+ * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
+ * (C) Copyright 2013 Oliver Schinagl <oliver@schinagl.nl>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <asm/arch/gpio.h>
+#include <asm/arch/pmic_bus.h>
+#include <axp_pmic.h>
+
+static u8 axp818_mvolt_to_cfg(int mvolt, int min, int max, int div)
+{
+ if (mvolt < min)
+ mvolt = min;
+ else if (mvolt > max)
+ mvolt = max;
+
+ return (mvolt - min) / div;
+}
+
+int axp_set_dcdc1(unsigned int mvolt)
+{
+ int ret;
+ u8 cfg = axp818_mvolt_to_cfg(mvolt, 1600, 3400, 100);
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC1_EN);
+
+ ret = pmic_bus_write(AXP818_DCDC1_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC1_EN);
+}
+
+int axp_set_dcdc2(unsigned int mvolt)
+{
+ int ret;
+ u8 cfg;
+
+ if (mvolt >= 1220)
+ cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
+ else
+ cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC2_EN);
+
+ ret = pmic_bus_write(AXP818_DCDC2_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC2_EN);
+}
+
+int axp_set_dcdc3(unsigned int mvolt)
+{
+ int ret;
+ u8 cfg;
+
+ if (mvolt >= 1220)
+ cfg = 70 + axp818_mvolt_to_cfg(mvolt, 1220, 1300, 20);
+ else
+ cfg = axp818_mvolt_to_cfg(mvolt, 500, 1200, 10);
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC3_EN);
+
+ ret = pmic_bus_write(AXP818_DCDC3_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC3_EN);
+}
+
+int axp_set_dcdc5(unsigned int mvolt)
+{
+ int ret;
+ u8 cfg;
+
+ if (mvolt >= 1140)
+ cfg = 32 + axp818_mvolt_to_cfg(mvolt, 1140, 1840, 20);
+ else
+ cfg = axp818_mvolt_to_cfg(mvolt, 800, 1120, 10);
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC5_EN);
+
+ ret = pmic_bus_write(AXP818_DCDC5_CTRL, cfg);
+ if (ret)
+ return ret;
+
+ return pmic_bus_setbits(AXP818_OUTPUT_CTRL1,
+ AXP818_OUTPUT_CTRL1_DCDC5_EN);
+}
+
+int axp_init(void)
+{
+ u8 axp_chip_id;
+ int ret;
+
+ ret = pmic_bus_init();
+ if (ret)
+ return ret;
+
+ ret = pmic_bus_read(AXP818_CHIP_ID, &axp_chip_id);
+ if (ret)
+ return ret;
+
+ if (!(axp_chip_id == 0x51))
+ return -ENODEV;
+ else
+ return ret;
+
+ return 0;
+}
diff --git a/include/axp818.h b/include/axp818.h
new file mode 100644
index 0000000..1dc6456
--- /dev/null
+++ b/include/axp818.h
@@ -0,0 +1,75 @@
+/*
+ * (C) Copyright 2015 Vishnu Patekar <vishnupatekar0510@gmail.com>
+ *
+ * X-Powers AXP818 Power Management IC driver
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#define AXP818_CHIP_ID 0x03
+
+#define AXP818_OUTPUT_CTRL1 0x10
+#define AXP818_OUTPUT_CTRL1_DCDC1_EN (1 << 0)
+#define AXP818_OUTPUT_CTRL1_DCDC2_EN (1 << 1)
+#define AXP818_OUTPUT_CTRL1_DCDC3_EN (1 << 2)
+#define AXP818_OUTPUT_CTRL1_DCDC4_EN (1 << 3)
+#define AXP818_OUTPUT_CTRL1_DCDC5_EN (1 << 4)
+#define AXP818_OUTPUT_CTRL1_DCDC6_EN (1 << 5)
+#define AXP818_OUTPUT_CTRL1_DCDC7_EN (1 << 6)
+#define AXP818_OUTPUT_CTRL2 0x12
+#define AXP818_OUTPUT_CTRL2_ELDO1_EN (1 << 0)
+#define AXP818_OUTPUT_CTRL2_ELDO2_EN (1 << 1)
+#define AXP818_OUTPUT_CTRL2_ELDO3_EN (1 << 2)
+#define AXP818_OUTPUT_CTRL2_DLDO1_EN (1 << 3)
+#define AXP818_OUTPUT_CTRL2_DLDO2_EN (1 << 4)
+#define AXP818_OUTPUT_CTRL2_DLDO3_EN (1 << 5)
+#define AXP818_OUTPUT_CTRL2_DLDO4_EN (1 << 6)
+#define AXP818_OUTPUT_CTRL3 0x13
+#define AXP818_OUTPUT_CTRL3_FLDO1_EN (1 << 2)
+#define AXP818_OUTPUT_CTRL3_FLDO2_EN (1 << 3)
+#define AXP818_OUTPUT_CTRL3_FLDO3_EN (1 << 4)
+#define AXP818_OUTPUT_CTRL3_ALDO1_EN (1 << 5)
+#define AXP818_OUTPUT_CTRL3_ALDO2_EN (1 << 6)
+#define AXP818_OUTPUT_CTRL3_ALDO3_EN (1 << 7)
+
+#define AXP818_DCDC1_CTRL 0x20
+#define AXP818_DCDC2_CTRL 0x21
+#define AXP818_DCDC3_CTRL 0x22
+#define AXP818_DCDC4_CTRL 0x23
+#define AXP818_DCDC5_CTRL 0x24
+#define AXP818_DCDC6_CTRL 0x25
+
+#define AXP818_DLDO1_CTRL 0x15
+#define AXP818_DLDO2_CTRL 0x16
+#define AXP818_DLDO3_CTRL 0x17
+#define AXP818_DLDO4_CTRL 0x18
+#define AXP818_ELDO1_CTRL 0x19
+#define AXP818_ELDO2_CTRL 0x1a
+#define AXP818_ELDO3_CTRL 0x1b
+#define AXP818_ELDO3_CTRL 0x1b
+#define AXP818_FLDO1_CTRL 0x1c
+#define AXP818_FLDO2_3_CTRL 0x1d
+#define AXP818_DCDC1_CTRL 0x20
+#define AXP818_DCDC2_CTRL 0x21
+#define AXP818_DCDC3_CTRL 0x22
+#define AXP818_DCDC4_CTRL 0x23
+#define AXP818_DCDC5_CTRL 0x24
+#define AXP818_DCDC6_CTRL 0x25
+#define AXP818_DCDC7_CTRL 0x26
+
+#define AXP818_ALDO1_CTRL 0x28
+#define AXP818_ALDO2_CTRL 0x29
+#define AXP818_ALDO3_CTRL 0x2a
+
+int axp818_init(void);
+
+/* For axp_gpio.c */
+#define AXP_POWER_STATUS 0x00
+#define AXP_POWER_STATUS_VBUS_PRESENT (1 << 5)
+#define AXP_GPIO0_CTRL 0x90
+#define AXP_GPIO1_CTRL 0x92
+#define AXP_GPIO_CTRL_OUTPUT_LOW 0x00 /* Drive pin low */
+#define AXP_GPIO_CTRL_OUTPUT_HIGH 0x01 /* Drive pin high */
+#define AXP_GPIO_CTRL_INPUT 0x02 /* Input */
+#define AXP_GPIO_STATE 0x94
+#define AXP_GPIO_STATE_OFFSET 0
diff --git a/include/axp_pmic.h b/include/axp_pmic.h
index ef339c4..3b01c49 100644
--- a/include/axp_pmic.h
+++ b/include/axp_pmic.h
@@ -16,6 +16,9 @@
#ifdef CONFIG_AXP221_POWER
#include <axp221.h>
#endif
+#ifdef CONFIG_AXP818_POWER
+#include <axp818.h>
+#endif

int axp_set_dcdc1(unsigned int mvolt);
int axp_set_dcdc2(unsigned int mvolt);
--
1.9.1