diff options
Diffstat (limited to 'src/soc/rockchip')
| -rw-r--r-- | src/soc/rockchip/rk3288/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/rk808.c | 66 | ||||
| -rw-r--r-- | src/soc/rockchip/rk3288/rk808.h | 25 |
3 files changed, 92 insertions, 0 deletions
diff --git a/src/soc/rockchip/rk3288/Makefile.inc b/src/soc/rockchip/rk3288/Makefile.inc index 8453757983..f9aa3775b8 100644 --- a/src/soc/rockchip/rk3288/Makefile.inc +++ b/src/soc/rockchip/rk3288/Makefile.inc @@ -50,6 +50,7 @@ ramstage-y += clock.c ramstage-y += spi.c ramstage-y += gpio.c ramstage-y += media.c +ramstage-y += rk808.c ramstage-$(CONFIG_DRIVERS_UART) += uart.c $(objcbfs)/bootblock.raw.elf: $(objcbfs)/bootblock.elf diff --git a/src/soc/rockchip/rk3288/rk808.c b/src/soc/rockchip/rk3288/rk808.c new file mode 100644 index 0000000000..0d629ca041 --- /dev/null +++ b/src/soc/rockchip/rk3288/rk808.c @@ -0,0 +1,66 @@ +/* + * 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 <assert.h> +#include <console/console.h> +#include <device/i2c.h> +#include <stdint.h> +#include <stdlib.h> +#include "rk808.h" + +#define RK808_ADDR 0x1b + +#define LDO_EN 0x24 +#define LDO_ONSEL(i) (0x39 + 2 * i) +#define LDO_SLPSEL(i) (0x3a + 2 * i) + +static void rk808_clrsetbits(uint8_t bus, uint8_t reg, uint8_t clr, uint8_t set) +{ + uint8_t value; + + if (i2c_readb(bus, RK808_ADDR, reg, &value) || + i2c_writeb(bus, RK808_ADDR, reg, (value & ~clr) | set)) + printk(BIOS_ERR, "ERROR: Cannot set Rk808[%#x]!\n", reg); +} + +void rk808_configure_ldo(uint8_t bus, int ldo, int millivolts) +{ + uint8_t vsel; + + switch (ldo) { + case 1: + case 2: + case 4: + case 5: + case 8: + vsel = millivolts / 100 - 18; + break; + case 3: + case 6: + case 7: + vsel = millivolts / 100 - 8; + break; + default: + die("Unknown LDO index!"); + } + assert(vsel <= 0x10); + + rk808_clrsetbits(bus, LDO_ONSEL(ldo), 0x1f, vsel); + rk808_clrsetbits(bus, LDO_EN, 0, 1 << (ldo - 1)); +} diff --git a/src/soc/rockchip/rk3288/rk808.h b/src/soc/rockchip/rk3288/rk808.h new file mode 100644 index 0000000000..a6ba67c538 --- /dev/null +++ b/src/soc/rockchip/rk3288/rk808.h @@ -0,0 +1,25 @@ +/* + * 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 + */ + +#ifndef __SOC_ROCKCHIP_RK3288_PMIC_H__ +#define __SOC_ROCKCHIP_RK3288_PMIC_H__ + +void rk808_configure_ldo(uint8_t bus, int ldo, int millivolts); + +#endif |