From: Oliver Schinagl oliver@schinagl.nl
The A31 uses the AXP221 pmic for various voltages.
Signed-off-by: Oliver Schinagl oliver@schinagl.nl Signed-off-by: Hans de Goede hdegoede@redhat.com --- board/sunxi/board.c | 14 ++++++ configs/Colombus_defconfig | 1 + drivers/power/Makefile | 1 + drivers/power/axp221.c | 103 +++++++++++++++++++++++++++++++++++++++++++++ include/axp221.h | 30 +++++++++++++ 5 files changed, 149 insertions(+) create mode 100644 drivers/power/axp221.c create mode 100644 include/axp221.h
diff --git a/board/sunxi/board.c b/board/sunxi/board.c index 8d5d03e..75b29b0 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -19,6 +19,9 @@ #ifdef CONFIG_AXP209_POWER #include <axp209.h> #endif +#ifdef CONFIG_AXP221_POWER +#include <axp221.h> +#endif #include <asm/arch/clock.h> #include <asm/arch/cpu.h> #include <asm/arch/dram.h> @@ -173,6 +176,17 @@ void sunxi_board_init(void) power_failed |= axp209_set_ldo3(2800); power_failed |= axp209_set_ldo4(2800); #endif +#ifdef CONFIG_AXP221_POWER + power_failed = axp221_init(); + power_failed |= axp221_set_dcdc1(3000); + power_failed |= axp221_set_dcdc2(1200); + power_failed |= axp221_set_dcdc3(1200); + power_failed |= axp221_set_dcdc4(1200); + power_failed |= axp221_set_dcdc5(1500); +#ifdef CONFIG_ENABLE_DLDO1_POWER + power_failed |= axp221_set_dldo1(3300); +#endif +#endif
printf("DRAM:"); ramsize = sunxi_dram_init(); diff --git a/configs/Colombus_defconfig b/configs/Colombus_defconfig index 8ba0029..06fb642 100644 --- a/configs/Colombus_defconfig +++ b/configs/Colombus_defconfig @@ -1,3 +1,4 @@ +CONFIG_SYS_EXTRA_OPTIONS="AXP221_POWER" CONFIG_ARM=y CONFIG_ARCH_SUNXI=y CONFIG_MACH_SUN6I=y diff --git a/drivers/power/Makefile b/drivers/power/Makefile index dc64e4d..04bd996 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -7,6 +7,7 @@
obj-$(CONFIG_AXP152_POWER) += axp152.o obj-$(CONFIG_AXP209_POWER) += axp209.o +obj-$(CONFIG_AXP221_POWER) += axp221.o obj-$(CONFIG_EXYNOS_TMU) += exynos-tmu.o obj-$(CONFIG_FTPMU010_POWER) += ftpmu010.o obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c new file mode 100644 index 0000000..9985fe3 --- /dev/null +++ b/drivers/power/axp221.c @@ -0,0 +1,103 @@ +/* + * (C) Copyright 2013 Oliver Schinagl oliver@schinagl.nl + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <errno.h> +#include <asm/arch/p2wi.h> +#include <axp221.h> + +static u8 axp221_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 axp221_set_dcdc1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 1600, 3400, 100); + + ret = p2wi_write(AXP221_DCDC1_CTRL, cfg); + if (ret) + return ret; + + ret = p2wi_read(AXP221_OUTPUT_CTRL2, &cfg); + if (ret) + return ret; + + cfg |= 1 << 7; + return p2wi_write(AXP221_OUTPUT_CTRL2, cfg); +} + +int axp221_set_dcdc2(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); + + return p2wi_write(AXP221_DCDC2_CTRL, cfg); +} + +int axp221_set_dcdc3(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1860, 20); + + return p2wi_write(AXP221_DCDC3_CTRL, cfg); +} + +int axp221_set_dcdc4(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 600, 1540, 20); + + return p2wi_write(AXP221_DCDC4_CTRL, cfg); +} + +int axp221_set_dcdc5(unsigned int mvolt) +{ + u8 cfg = axp221_mvolt_to_cfg(mvolt, 1000, 2550, 50); + + return p2wi_write(AXP221_DCDC5_CTRL, cfg); +} + +int axp221_set_dldo1(unsigned int mvolt) +{ + int ret; + u8 cfg = axp221_mvolt_to_cfg(mvolt, 700, 3300, 100); + + ret = p2wi_write(AXP221_DLDO1_CTRL, cfg); + if (ret) + return ret; + + ret = p2wi_read(AXP221_OUTPUT_CTRL2, &cfg); + if (ret) + return ret; + + cfg |= 1 << 3; + return p2wi_write(AXP221_OUTPUT_CTRL2, cfg); +} + +int axp221_init(void) +{ + u8 axp_chip_id; + int ret; + + p2wi_init(); + ret = p2wi_set_pmu_address(AXP221_CHIP_ADDR, AXP221_CTRL_ADDR, + AXP221_INIT_DATA); + if (ret) + return ret; + + ret = p2wi_read(AXP221_CHIP_ID, &axp_chip_id); + if (ret) + return ret; + + if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17)) + return -ENODEV; + + return 0; +} diff --git a/include/axp221.h b/include/axp221.h new file mode 100644 index 0000000..c3a6cf4 --- /dev/null +++ b/include/axp221.h @@ -0,0 +1,30 @@ +/* + * (C) Copyright 2013 Oliver Schinagl oliver@schinagl.nl + * + * X-Powers AXP221 Power Management IC driver + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#define AXP221_CHIP_ADDR 0x68 +#define AXP221_CTRL_ADDR 0x3e +#define AXP221_INIT_DATA 0x3e + +#define AXP221_CHIP_ID 0x03 +#define AXP221_OUTPUT_CTRL1 0x10 +#define AXP221_OUTPUT_CTRL2 0x12 +#define AXP221_OUTPUT_CTRL3 0x13 +#define AXP221_DLDO1_CTRL 0x15 +#define AXP221_DCDC1_CTRL 0x21 +#define AXP221_DCDC2_CTRL 0x22 +#define AXP221_DCDC3_CTRL 0x23 +#define AXP221_DCDC4_CTRL 0x24 +#define AXP221_DCDC5_CTRL 0x25 + +int axp221_set_dcdc1(unsigned int mvolt); +int axp221_set_dcdc2(unsigned int mvolt); +int axp221_set_dcdc3(unsigned int mvolt); +int axp221_set_dcdc4(unsigned int mvolt); +int axp221_set_dcdc5(unsigned int mvolt); +int axp221_set_dldo1(unsigned int mvolt); +int axp221_init(void);