diff options
Diffstat (limited to 'src/soc/mediatek/mt8173')
| -rw-r--r-- | src/soc/mediatek/mt8173/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8173/da9212.c | 96 | ||||
| -rw-r--r-- | src/soc/mediatek/mt8173/include/soc/da9212.h | 85 |
3 files changed, 182 insertions, 0 deletions
diff --git a/src/soc/mediatek/mt8173/Makefile.inc b/src/soc/mediatek/mt8173/Makefile.inc index 6ba533adad..217cbc342c 100644 --- a/src/soc/mediatek/mt8173/Makefile.inc +++ b/src/soc/mediatek/mt8173/Makefile.inc @@ -67,6 +67,7 @@ ramstage-y += timer.c ramstage-$(CONFIG_DRIVERS_UART) += uart.c ramstage-y += pmic_wrap.c mt6391.c i2c.c ramstage-y += mt6311.c +ramstage-y += da9212.c ramstage-y += gpio.c ramstage-y += wdt.c ramstage-y += pll.c diff --git a/src/soc/mediatek/mt8173/da9212.c b/src/soc/mediatek/mt8173/da9212.c new file mode 100644 index 0000000000..8161667fa9 --- /dev/null +++ b/src/soc/mediatek/mt8173/da9212.c @@ -0,0 +1,96 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <console/console.h> +#include <device/i2c.h> +#include <soc/da9212.h> + +enum { + DA9212_SLAVE_ADDR = 0x68, +}; + +static void da9212_hw_init(uint8_t i2c_num, unsigned char variant_id) +{ + int ret = 0; + int buck_mode = DA9212_BUCK_MODE_AUTO; + + if (variant_id == DA9212_VARIANT_ID_AB) + buck_mode = DA9212_BUCK_MODE_PWM; + + /* page select to 0 */ + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_PAGE_CON, DA9212_REG_PAGE0, + DA9212_REG_PAGE_MASK, DA9212_REG_PAGE_SHIFT); + + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_BUCKA_CONT, DA9212_BUCK_GPI_GPIO1, + DA9212_BUCK_GPI_MASK, DA9212_BUCK_GPI_SHIFT); + + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_BUCKB_CONT, DA9212_BUCK_GPI_OFF, + DA9212_BUCK_GPI_OFF, DA9212_BUCK_GPI_SHIFT); + + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_BUCKA_CONT, DA9212_VBUCK_SEL_A, + DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT); + + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_BUCKB_CONT, DA9212_VBUCK_SEL_A, + DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT); + + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_BUCKA_CONF, buck_mode, + DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT); + + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_BUCKB_CONF, buck_mode, + DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT); + + if (ret) + printk(BIOS_ERR, "ERROR: %s failed\n", __func__); + +} + +void da9212_probe(uint8_t i2c_num) +{ + int ret = 0; + unsigned char device_id = 0; + unsigned char variant_id = 0; + + + /* select to page 4, clear REVERT at first time */ + ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_PAGE_CON, DA9212_REG_PAGE4, + 0xF, DA9212_REG_PAGE_SHIFT); + + ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_DEVICE_ID, &device_id, + 0xFF, 0); + + ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR, + DA9212_REG_VARIANT_ID, &variant_id, + 0xFF, 0); + + printk(BIOS_INFO, "%s: device ID = %#x, variant ID = %#x\n", __func__, + device_id, variant_id); + + /* Check device ID is DA9212 */ + if (device_id != DA9212_ID || ret) { + printk(BIOS_ERR, "ERROR: unknown DA9212 device_id\n"); + return; + } + + da9212_hw_init(i2c_num, variant_id); +} diff --git a/src/soc/mediatek/mt8173/include/soc/da9212.h b/src/soc/mediatek/mt8173/include/soc/da9212.h new file mode 100644 index 0000000000..388958d92b --- /dev/null +++ b/src/soc/mediatek/mt8173/include/soc/da9212.h @@ -0,0 +1,85 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 MediaTek Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __SOC_DA9212_H_ +#define __SOC_DA9212_H_ + +void da9212_probe(uint8_t i2c_num); + +enum { + /* Page selection */ + DA9212_REG_PAGE_CON = 0x0, + + /* Regulator Registers */ + DA9212_REG_BUCKA_CONT = 0x5D, + DA9212_REG_BUCKB_CONT = 0x5E, + DA9212_REG_BUCKA_CONF = 0xD1, + DA9212_REG_BUCKB_CONF = 0xD2, +}; + +/* DA9212_REG_PAGE_CON (addr=0x0) */ +enum { + DA9212_REG_PAGE_SHIFT = 0, + DA9212_REG_PAGE_MASK = 0xf +}; + +enum { + DA9212_REG_PAGE0 = 0, + DA9212_REG_PAGE2 = 2, + DA9212_REG_PAGE4 = 4, + DA9212_PAGE_WRITE_MODE = 0x0, + DA9212_REPEAT_WRITE_MODE = 0x40, + DA9212_PAGE_REVERT = 0x80 +}; + +/* DA9212_REG_BUCKA/B_CONT (addr=0x5D/0x5E) */ +enum { + DA9212_BUCK_EN_SHIFT = 0, + DA9212_BUCK_OFF = 0x0, + DA9212_BUCK_ON = 0x1, + DA9212_BUCK_GPI_SHIFT = 1, + DA9212_BUCK_GPI_MASK = 0x3, + DA9212_BUCK_GPI_OFF = 0x0, + DA9212_BUCK_GPI_GPIO0 = 0x1, + DA9212_BUCK_GPI_GPIO1 = 0x2, + DA9212_BUCK_GPI_GPIO4 = 0x3, + DA9212_VBUCK_SEL_SHIFT = 4, + DA9212_VBUCK_SEL_MASK = 0x1, + DA9212_VBUCK_SEL_A = 0x0, + DA9212_VBUCK_SEL_B = 0x1, +}; + +/* DA9212_REG_BUCKA/B_CONF (addr=0xD1/0xD2) */ +enum { + DA9212_BUCK_MODE_SHIFT = 0, + DA9212_BUCK_MODE_MASK = 0x3, + DA9212_BUCK_MODE_MANUAL = 0x0, + DA9212_BUCK_MODE_PFM = 0x1, + DA9212_BUCK_MODE_PWM = 0x2, + DA9212_BUCK_MODE_AUTO = 0x3, +}; + +/* DA9212_REG_CONFIG_E (addr=0x147) */ +enum { + /* DEVICE IDs */ + DA9212_REG_DEVICE_ID = 0x1, + DA9212_ID = 0x22, + DA9213_ID = 0x23, + DA9212_REG_VARIANT_ID = 0x2, + DA9212_VARIANT_ID_AB = 0x10, + DA9212_VARIANT_ID_AC = 0x20 +}; + +#endif |