diff options
Diffstat (limited to 'src/mainboard/google/veyron_pinky/pmic.c')
-rw-r--r-- | src/mainboard/google/veyron_pinky/pmic.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/mainboard/google/veyron_pinky/pmic.c b/src/mainboard/google/veyron_pinky/pmic.c new file mode 100644 index 0000000000..2e6f0abca1 --- /dev/null +++ b/src/mainboard/google/veyron_pinky/pmic.c @@ -0,0 +1,85 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Rockchip 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <device/i2c.h> +#include <stdint.h> +#include <stdlib.h> +#include "pmic.h" + +#define RK808_ADDR 0x1b +#define LOD1EN (1 << 0) +#define LOD2EN (1 << 1) +#define LOD3EN (1 << 2) +#define LOD4EN (1 << 3) +#define LOD5EN (1 << 4) +#define LOD6EN (1 << 5) +#define LOD7EN (1 << 6) +#define LOD8EN (1 << 7) + +#define LDO_BASE18V 18 +#define LDO_BASE08V 8 +#define LDOVSEL(mV, base) (mV/100 - base) + +struct rk808_reg { + u8 reg; + u8 val; +}; + +enum { + LDO_EN = 0x24, + LDO1_ONSEL = 0x3B, + LDO1_SLPSEL, + LDO2_ONSEL, + LDO2_SLPSEL, + LDO3_ONSEL, + LDO3_SLPSEL, + LDO4_ONSEL, + LDO4_SLPSEL, + LDO5_ONSEL, + LDO5_SLPSEL, + LDO6_ONSEL, + LDO6_SLPSEL, + LDO7_ONSEL, + LDO7_SLPSEL, + LDO8_ONSEL, + LDO8_SLPSEL, +}; + +static struct rk808_reg ldo_initlist[] = { + {LDO4_ONSEL, LDOVSEL(1800, LDO_BASE18V)}, /*vcc18_lcd*/ + {LDO5_ONSEL, LDOVSEL(1800, LDO_BASE18V)}, /*vcc18_codec*/ + {LDO6_ONSEL, LDOVSEL(1000, LDO_BASE08V)}, /*vcc10_lcd*/ + {LDO8_ONSEL, LDOVSEL(3300, LDO_BASE18V)}, /*vccio_sd*/ +}; + +void pmic_init(unsigned int bus) +{ + uint8_t read_reg; + int i; + for (i = 0; i < ARRAY_SIZE(ldo_initlist); i++) { + struct rk808_reg *reg = &ldo_initlist[i]; + i2c_writeb(bus, RK808_ADDR, reg->reg, reg->val); + } + + /*enable ldo4,ldo5,ldo6,ldo8*/ + i2c_readb(bus, RK808_ADDR, LDO_EN, &read_reg); + i2c_writeb(bus, RK808_ADDR, LDO_EN, read_reg | LOD8EN | LOD6EN + | LOD5EN | LOD4EN); +} |