sunxi: Add support for AXP305 PMIC
This PMIC can be found on H616 boards and it's very similar to AXP805
and AXP806.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index 02050f6..d17cf2d 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -48,6 +48,15 @@
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_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 @@
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 2dcc7bb..0bef069 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 0000000..0191e4d
--- /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@siol.net>
+ *
+ * Based on axp221.c
+ * (C) Copyright 2014 Hans de Goede <hdegoede@redhat.com>
+ * (C) Copyright 2013 Oliver Schinagl <oliver@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