[PATCH v2 01/21] sunxi: Add support for AXP305 PMIC
Jernej Skrabec
jernej.skrabec at siol.net
Mon Jan 11 21:11:33 CET 2021
This PMIC can be found on H616 boards and it's very similar to AXP805
and AXP806.
Reviewed-by: Andre Przywara <andre.przywara at arm.com>
Reviewed-by: Jaehoon Chung <jh80.chung at samsung.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec at siol.net>
---
arch/arm/mach-sunxi/pmic_bus.c | 6 +++
board/sunxi/board.c | 10 ++--
drivers/power/Kconfig | 13 +++++-
drivers/power/Makefile | 1 +
drivers/power/axp305.c | 83 ++++++++++++++++++++++++++++++++++
include/axp305.h | 17 +++++++
include/axp_pmic.h | 3 ++
7 files changed, 129 insertions(+), 4 deletions(-)
create mode 100644 drivers/power/axp305.c
create mode 100644 include/axp305.h
diff --git a/arch/arm/mach-sunxi/pmic_bus.c b/arch/arm/mach-sunxi/pmic_bus.c
index dea42de833f1..0394ce856448 100644
--- a/arch/arm/mach-sunxi/pmic_bus.c
+++ b/arch/arm/mach-sunxi/pmic_bus.c
@@ -18,6 +18,8 @@
#define AXP209_I2C_ADDR 0x34
+#define AXP305_I2C_ADDR 0x36
+
#define AXP221_CHIP_ADDR 0x68
#define AXP221_CTRL_ADDR 0x3e
#define AXP221_INIT_DATA 0x3e
@@ -64,6 +66,8 @@ int pmic_bus_read(u8 reg, u8 *data)
return i2c_read(AXP152_I2C_ADDR, reg, 1, data, 1);
#elif defined CONFIG_AXP209_POWER
return i2c_read(AXP209_I2C_ADDR, reg, 1, data, 1);
+#elif defined CONFIG_AXP305_POWER
+ return i2c_read(AXP305_I2C_ADDR, reg, 1, data, 1);
#elif defined CONFIG_AXP221_POWER || defined CONFIG_AXP809_POWER || defined CONFIG_AXP818_POWER
# ifdef CONFIG_MACH_SUN6I
return p2wi_read(reg, data);
@@ -81,6 +85,8 @@ int pmic_bus_write(u8 reg, u8 data)
return i2c_write(AXP152_I2C_ADDR, reg, 1, &data, 1);
#elif defined CONFIG_AXP209_POWER
return i2c_write(AXP209_I2C_ADDR, reg, 1, &data, 1);
+#elif defined CONFIG_AXP305_POWER
+ return i2c_write(AXP305_I2C_ADDR, reg, 1, &data, 1);
#elif defined CONFIG_AXP221_POWER || defined CONFIG_AXP809_POWER || defined CONFIG_AXP818_POWER
# ifdef CONFIG_MACH_SUN6I
return p2wi_write(reg, data);
diff --git a/board/sunxi/board.c b/board/sunxi/board.c
index 77e464718846..40fdd5da0477 100644
--- a/board/sunxi/board.c
+++ b/board/sunxi/board.c
@@ -634,16 +634,18 @@ void sunxi_board_init(void)
#endif
#if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER || \
- defined CONFIG_AXP221_POWER || defined CONFIG_AXP809_POWER || \
- defined CONFIG_AXP818_POWER
+ defined CONFIG_AXP221_POWER || defined CONFIG_AXP305_POWER || \
+ defined CONFIG_AXP809_POWER || defined CONFIG_AXP818_POWER
power_failed = axp_init();
#if defined CONFIG_AXP221_POWER || defined CONFIG_AXP809_POWER || \
defined CONFIG_AXP818_POWER
power_failed |= axp_set_dcdc1(CONFIG_AXP_DCDC1_VOLT);
#endif
+#if !defined(CONFIG_AXP305_POWER)
power_failed |= axp_set_dcdc2(CONFIG_AXP_DCDC2_VOLT);
power_failed |= axp_set_dcdc3(CONFIG_AXP_DCDC3_VOLT);
+#endif
#if !defined(CONFIG_AXP209_POWER) && !defined(CONFIG_AXP818_POWER)
power_failed |= axp_set_dcdc4(CONFIG_AXP_DCDC4_VOLT);
#endif
@@ -656,8 +658,10 @@ void sunxi_board_init(void)
defined CONFIG_AXP818_POWER
power_failed |= axp_set_aldo1(CONFIG_AXP_ALDO1_VOLT);
#endif
+#if !defined(CONFIG_AXP305_POWER)
power_failed |= axp_set_aldo2(CONFIG_AXP_ALDO2_VOLT);
-#if !defined(CONFIG_AXP152_POWER)
+#endif
+#if !defined(CONFIG_AXP152_POWER) && !defined(CONFIG_AXP305_POWER)
power_failed |= axp_set_aldo3(CONFIG_AXP_ALDO3_VOLT);
#endif
#ifdef CONFIG_AXP209_POWER
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 02050f6f3569..d17cf2d9112a 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -48,6 +48,15 @@ config AXP221_POWER
Select this to enable support for the axp221/axp223 pmic found on most
A23 and A31 boards.
+config AXP305_POWER
+ bool "axp305 pmic support"
+ depends on MACH_SUN50I_H616
+ select AXP_PMIC_BUS
+ select CMD_POWEROFF
+ ---help---
+ Select this to enable support for the axp305 pmic found on most
+ H616 boards.
+
config AXP809_POWER
bool "axp809 pmic support"
depends on MACH_SUN9I
@@ -127,11 +136,12 @@ config AXP_DCDC3_VOLT
config AXP_DCDC4_VOLT
int "axp pmic dcdc4 voltage"
- depends on AXP152_POWER || AXP221_POWER || AXP809_POWER || AXP818_POWER
+ depends on AXP152_POWER || AXP221_POWER || AXP809_POWER || AXP818_POWER || AXP305_POWER
default 1250 if AXP152_POWER
default 1200 if MACH_SUN6I
default 0 if MACH_SUN8I
default 900 if MACH_SUN9I
+ default 1500 if AXP305_POWER
---help---
Set the voltage (mV) to program the axp pmic dcdc4 at, set to 0 to
disable dcdc4.
@@ -140,6 +150,7 @@ config AXP_DCDC4_VOLT
On A23 / A33 boards dcdc4 is unused and should be disabled.
On A80 boards dcdc4 powers VDD-SYS, HDMI, USB OTG and should be 0.9V.
On A83T boards dcdc4 is used for VDD-GPU.
+ On H616 boards dcdcd is used for VCC-DRAM.
config AXP_DCDC5_VOLT
int "axp pmic dcdc5 voltage"
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 2dcc7bb99d02..0bef06920a7d 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -6,6 +6,7 @@
obj-$(CONFIG_AXP152_POWER) += axp152.o
obj-$(CONFIG_AXP209_POWER) += axp209.o
obj-$(CONFIG_AXP221_POWER) += axp221.o
+obj-$(CONFIG_AXP305_POWER) += axp305.o
obj-$(CONFIG_AXP809_POWER) += axp809.o
obj-$(CONFIG_AXP818_POWER) += axp818.o
obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o
diff --git a/drivers/power/axp305.c b/drivers/power/axp305.c
new file mode 100644
index 000000000000..0191e4d427e8
--- /dev/null
+++ b/drivers/power/axp305.c
@@ -0,0 +1,83 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AXP305 driver
+ *
+ * (C) Copyright 2020 Jernej Skrabec <jernej.skrabec at siol.net>
+ *
+ * Based on axp221.c
+ * (C) Copyright 2014 Hans de Goede <hdegoede at redhat.com>
+ * (C) Copyright 2013 Oliver Schinagl <oliver at schinagl.nl>
+ */
+
+#include <common.h>
+#include <command.h>
+#include <errno.h>
+#include <asm/arch/pmic_bus.h>
+#include <axp_pmic.h>
+
+#define AXP305_DCDC4_1600MV_OFFSET 46
+
+static u8 axp305_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_dcdc4(unsigned int mvolt)
+{
+ int ret;
+ u8 cfg;
+
+ if (mvolt >= 1600)
+ cfg = AXP305_DCDC4_1600MV_OFFSET +
+ axp305_mvolt_to_cfg(mvolt, 1600, 3300, 100);
+ else
+ cfg = axp305_mvolt_to_cfg(mvolt, 600, 1500, 20);
+
+ if (mvolt == 0)
+ return pmic_bus_clrbits(AXP305_OUTPUT_CTRL1,
+ AXP305_OUTPUT_CTRL1_DCDCD_EN);
+
+ ret = pmic_bus_write(AXP305_DCDCD_VOLTAGE, cfg);
+ if (ret)
+ return ret;
+
+ return pmic_bus_setbits(AXP305_OUTPUT_CTRL1,
+ AXP305_OUTPUT_CTRL1_DCDCD_EN);
+}
+
+int axp_init(void)
+{
+ u8 axp_chip_id;
+ int ret;
+
+ ret = pmic_bus_init();
+ if (ret)
+ return ret;
+
+ ret = pmic_bus_read(AXP305_CHIP_VERSION, &axp_chip_id);
+ if (ret)
+ return ret;
+
+ if ((axp_chip_id & AXP305_CHIP_VERSION_MASK) != 0x40)
+ return -ENODEV;
+
+ return ret;
+}
+
+#ifndef CONFIG_PSCI_RESET
+int do_poweroff(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
+{
+ pmic_bus_write(AXP305_SHUTDOWN, AXP305_POWEROFF);
+
+ /* infinite loop during shutdown */
+ while (1) {}
+
+ /* not reached */
+ return 0;
+}
+#endif
diff --git a/include/axp305.h b/include/axp305.h
new file mode 100644
index 000000000000..225c5040a322
--- /dev/null
+++ b/include/axp305.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * (C) Copyright 2020 Jernej Skrabec <jernej.skrabec at siol.net>
+ */
+
+enum axp305_reg {
+ AXP305_CHIP_VERSION = 0x3,
+ AXP305_OUTPUT_CTRL1 = 0x10,
+ AXP305_DCDCD_VOLTAGE = 0x15,
+ AXP305_SHUTDOWN = 0x32,
+};
+
+#define AXP305_CHIP_VERSION_MASK 0xcf
+
+#define AXP305_OUTPUT_CTRL1_DCDCD_EN (1 << 3)
+
+#define AXP305_POWEROFF (1 << 7)
diff --git a/include/axp_pmic.h b/include/axp_pmic.h
index 10091d0bb278..405044c3a32f 100644
--- a/include/axp_pmic.h
+++ b/include/axp_pmic.h
@@ -15,6 +15,9 @@
#ifdef CONFIG_AXP221_POWER
#include <axp221.h>
#endif
+#ifdef CONFIG_AXP305_POWER
+#include <axp305.h>
+#endif
#ifdef CONFIG_AXP809_POWER
#include <axp809.h>
#endif
--
2.30.0
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