From fbd37d8d28450a29180a9df1e7546c7f0cb60a38 Mon Sep 17 00:00:00 2001 From: Jernej Skrabec Date: Mon, 11 Jan 2021 21:11:33 +0100 Subject: 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 Reviewed-by: Andre Przywara Reviewed-by: Jaehoon Chung Signed-off-by: Andre Przywara --- drivers/power/Kconfig | 13 +++++++- drivers/power/Makefile | 1 + drivers/power/axp305.c | 83 ++++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 96 insertions(+), 1 deletion(-) create mode 100644 drivers/power/axp305.c (limited to 'drivers') diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 02050f6f35..d17cf2d911 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 2dcc7bb99d..0bef06920a 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 0000000000..0191e4d427 --- /dev/null +++ b/drivers/power/axp305.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * AXP305 driver + * + * (C) Copyright 2020 Jernej Skrabec + * + * Based on axp221.c + * (C) Copyright 2014 Hans de Goede + * (C) Copyright 2013 Oliver Schinagl + */ + +#include +#include +#include +#include +#include + +#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 -- cgit v1.2.3