SY8106A is a PMIC which is used on the Allwinner H3 Orange Pi Pc and Plus board. The VOUT1_SEL register is implemented to set the default V-CPU voltage to 1200 mV.
This driver is required to retain the SY8106A V-CPU voltage after a software reset. On cold boot the default SY8106A output voltage is selected by a pair of resistors and happens to be 1.2V on the Orange Pi PC and Plus.
Signed-off-by: Jelle van der Waa jelle@vdwaa.nl Signed-off-by: Hans de Goede hdegoede@redhat.com Tested-by: Siarhei Siamashka siarhei.siamashka@gmail.com Acked-by: Siarhei Siamashka siarhei.siamashka@gmail.com
--- Changes in v2 - Fixed typo in commit message thea => the. - Made config R_I2C_ENABLE depend on SY8106A_POWER. - Removed 'default n' from config R_I2C_ENABLE - Changed SY8106A_POWER description from "most" to "some" boards. - Added license/copyright to include/sy8106a.h and drivers/power/sy8106a.c. --- board/sunxi/Kconfig | 5 ++++- board/sunxi/board.c | 5 +++++ configs/orangepi_pc_defconfig | 2 +- drivers/power/Kconfig | 16 ++++++++++++++++ drivers/power/Makefile | 1 + drivers/power/sy8106a.c | 29 +++++++++++++++++++++++++++++ include/configs/sunxi-common.h | 6 ++++-- include/sy8106a.h | 11 +++++++++++ 8 files changed, 71 insertions(+), 4 deletions(-) create mode 100644 drivers/power/sy8106a.c create mode 100644 include/sy8106a.h
diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig index a334aa3..5e9d3af 100644 --- a/board/sunxi/Kconfig +++ b/board/sunxi/Kconfig @@ -372,11 +372,14 @@ config I2C3_ENABLE See I2C0_ENABLE help text. endif
+if SUNXI_GEN_SUN6I config R_I2C_ENABLE bool "Enable the PRCM I2C/TWI controller" - default n + # This is used for the pmic on H3 + default y if SY8106A_POWER ---help--- Set this to y to enable the I2C controller which is part of the PRCM. +endif
if MACH_SUN7I config I2C4_ENABLE diff --git a/board/sunxi/board.c b/board/sunxi/board.c index 420481a..15b7af6 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -25,6 +25,7 @@ #include <asm/io.h> #include <nand.h> #include <net.h> +#include <sy8106a.h>
#if defined CONFIG_VIDEO_LCD_PANEL_I2C && !(defined CONFIG_SPL_BUILD) /* So that we can use pin names in Kconfig and sunxi_name_to_gpio() */ @@ -436,6 +437,10 @@ void sunxi_board_init(void) int power_failed = 0; unsigned long ramsize;
+#ifdef CONFIG_SY8106A_POWER + power_failed = sy8106a_set_vout1(CONFIG_SY8106A_VOUT1_VOLT); +#endif + #if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER || \ defined CONFIG_AXP221_POWER || defined CONFIG_AXP818_POWER power_failed = axp_init(); diff --git a/configs/orangepi_pc_defconfig b/configs/orangepi_pc_defconfig index ea9ed87..29a8da6 100644 --- a/configs/orangepi_pc_defconfig +++ b/configs/orangepi_pc_defconfig @@ -12,4 +12,4 @@ CONFIG_SPL=y # CONFIG_CMD_FLASH is not set # CONFIG_CMD_FPGA is not set CONFIG_CMD_GPIO=y -CONFIG_R_I2C_ENABLE=y +CONFIG_SY8106A_POWER=y diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index 10683a2..adc6455 100644 --- a/drivers/power/Kconfig +++ b/drivers/power/Kconfig @@ -48,6 +48,13 @@ config AXP818_POWER Say y here to enable support for the axp818 pmic found on A83T dev board.
+config SY8106A_POWER + boolean "SY8106A pmic support" + depends on MACH_SUN8I_H3 + ---help--- + Select this to enable support for the SY8106A pmic found on some + H3 boards. + endchoice
config AXP_DCDC1_VOLT @@ -232,4 +239,13 @@ config AXP_ELDO3_VOLT 1.2V for the SSD2828 chip (converter of parallel LCD interface into MIPI DSI).
+config SY8106A_VOUT1_VOLT + int "SY8106A pmic VOUT1 voltage" + depends on SY8106A_POWER + default 1200 + ---help--- + Set the voltage (mV) to program the SY8106A pmic VOUT1. This + is typically used to power the VDD-CPU and should be 1200mV. + Values can range from 680mV till 1950mV. + endmenu diff --git a/drivers/power/Makefile b/drivers/power/Makefile index 0fdbca3..690faa0 100644 --- a/drivers/power/Makefile +++ b/drivers/power/Makefile @@ -12,6 +12,7 @@ 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-$(CONFIG_SY8106A_POWER) += sy8106a.o obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o obj-$(CONFIG_TWL4030_POWER) += twl4030.o obj-$(CONFIG_TWL6030_POWER) += twl6030.o diff --git a/drivers/power/sy8106a.c b/drivers/power/sy8106a.c new file mode 100644 index 0000000..bbf116f --- /dev/null +++ b/drivers/power/sy8106a.c @@ -0,0 +1,29 @@ +/* + * (C) Copyright 2016 + * Jelle van der Waa jelle@vdwaa.nl + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#include <common.h> +#include <i2c.h> +#include <sy8106a.h> + +#define SY8106A_I2C_ADDR 0x65 +#define SY8106A_VOUT1_SEL 1 +#define SY8106A_VOUT1_SEL_ENABLE (1 << 7) + +static u8 sy8106a_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 sy8106a_set_vout1(unsigned int mvolt) +{ + u8 data = sy8106a_mvolt_to_cfg(mvolt, 680, 1950, 10) | SY8106A_VOUT1_SEL_ENABLE; + return i2c_write(SY8106A_I2C_ADDR, SY8106A_VOUT1_SEL, 1, &data, 1); +} diff --git a/include/configs/sunxi-common.h b/include/configs/sunxi-common.h index b4dfb3c..40850e5 100644 --- a/include/configs/sunxi-common.h +++ b/include/configs/sunxi-common.h @@ -206,7 +206,8 @@ #define CONFIG_SPL_STACK LOW_LEVEL_SRAM_STACK
/* I2C */ -#if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER +#if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER || \ + defined CONFIG_SY8106A_POWER #define CONFIG_SPL_I2C_SUPPORT #endif
@@ -240,7 +241,8 @@ extern int soft_i2c_gpio_scl;
/* PMU */ #if defined CONFIG_AXP152_POWER || defined CONFIG_AXP209_POWER || \ - defined CONFIG_AXP221_POWER || defined CONFIG_AXP818_POWER + defined CONFIG_AXP221_POWER || defined CONFIG_AXP818_POWER || \ + defined CONFIG_SY8106A_POWER #define CONFIG_SPL_POWER_SUPPORT #endif
diff --git a/include/sy8106a.h b/include/sy8106a.h new file mode 100644 index 0000000..32e8c43 --- /dev/null +++ b/include/sy8106a.h @@ -0,0 +1,11 @@ +/* + * (C) Copyright 2016 + * Jelle van der Waa jelle@vdwaa.nl + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef _SY8106A_PMIC_H_ + +int sy8106a_set_vout1(unsigned int mvolt); + +#endif