From: "Philip, Avinash" <avinashphi...@ti.com> Add a driver for the TPS65910 PMIC that is found in the AM335x GP EVM, AM335x EVM SK and others.
Signed-off-by: Philip, Avinash <avinashphi...@ti.com> [trini: Split and rework Avinash's changes into new drivers/power framework] Signed-off-by: Tom Rini <tr...@ti.com> --- drivers/power/pmic/Makefile | 1 + drivers/power/pmic/pmic_tps65910.c | 69 +++++++++++++++++++++++++++++++ include/power/tps65910.h | 79 ++++++++++++++++++++++++++++++++++++ 3 files changed, 149 insertions(+) create mode 100644 drivers/power/pmic/pmic_tps65910.c create mode 100644 include/power/tps65910.h diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile index 473cb80..1811080 100644 --- a/drivers/power/pmic/Makefile +++ b/drivers/power/pmic/Makefile @@ -30,6 +30,7 @@ COBJS-$(CONFIG_POWER_MAX8997) += pmic_max8997.o COBJS-$(CONFIG_POWER_MUIC_MAX8997) += muic_max8997.o COBJS-$(CONFIG_POWER_MAX77686) += pmic_max77686.o COBJS-$(CONFIG_POWER_TPS65217) += pmic_tps65217.o +COBJS-$(CONFIG_POWER_TPS65910) += pmic_tps65910.o COBJS := $(COBJS-y) SRCS := $(COBJS:.o=.c) diff --git a/drivers/power/pmic/pmic_tps65910.c b/drivers/power/pmic/pmic_tps65910.c new file mode 100644 index 0000000..0303f71 --- /dev/null +++ b/drivers/power/pmic/pmic_tps65910.c @@ -0,0 +1,69 @@ +/* + * (C) Copyright 2011-2013 + * Texas Instruments, <www.ti.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <i2c.h> +#include <power/tps65910.h> + +/* + * voltage switching for MPU frequency switching. + * @module = mpu - 0, core - 1 + * @vddx_op_vol_sel = vdd voltage to set + */ +int tps65910_voltage_update(unsigned int module, unsigned char vddx_op_vol_sel) +{ + uchar buf[4]; + unsigned int reg_offset; + + if (module == MPU) + reg_offset = TPS65910_VDD1_OP_REG; + else + reg_offset = TPS65910_VDD2_OP_REG; + + /* Select VDDx OP */ + if (i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, buf, 1)) + return 1; + + buf[0] &= ~TPS65910_OP_REG_CMD_MASK; + + if (i2c_write(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, buf, 1)) + return 1; + + /* Configure VDDx OP Voltage */ + if (i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, buf, 1)) + return 1; + + buf[0] &= ~TPS65910_OP_REG_SEL_MASK; + buf[0] |= vddx_op_vol_sel; + + if (i2c_write(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, buf, 1)) + return 1; + + if (i2c_read(TPS65910_CTRL_I2C_ADDR, reg_offset, 1, buf, 1)) + return 1; + + if ((buf[0] & TPS65910_OP_REG_SEL_MASK) != vddx_op_vol_sel) + return 1; + + return 0; +} diff --git a/include/power/tps65910.h b/include/power/tps65910.h new file mode 100644 index 0000000..5942721 --- /dev/null +++ b/include/power/tps65910.h @@ -0,0 +1,79 @@ +/* + * (C) Copyright 2011-2013 + * Texas Instruments, <www.ti.com> + * + * 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. + * + * This program is distributed "as is" WITHOUT ANY WARRANTY of any + * kind, whether express or implied; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#ifndef __POWER_TPS65910_H__ +#define __POWER_TPS65910_H__ + +#define MPU 0 +#define CORE 1 + +int tps65910_voltage_update(unsigned int module, unsigned char vddx_op_vol_sel); + +#define TPS65910_SR_I2C_ADDR 0x12 +#define TPS65910_CTRL_I2C_ADDR 0x2D + +/* PMIC Register offsets */ +#define TPS65910_VDD1_REG 0x21 +#define TPS65910_VDD1_OP_REG 0x22 +#define TPS65910_VDD2_REG 0x24 +#define TPS65910_VDD2_OP_REG 0x25 +#define TPS65910_DEVCTRL_REG 0x3F + +/* VDD2 & VDD1 control register (VDD2_REG & VDD1_REG) */ +#define TPS65910_VGAIN_SEL_MASK (0x3 << 6) +#define TPS65910_ILMAX_MASK (0x1 << 5) +#define TPS65910_TSTEP_MASK (0x7 << 2) +#define TPS65910_ST_MASK (0x3) + +#define TPS65910_REG_VGAIN_SEL_X1 (0x0 << 6) +#define TPS65910_REG_VGAIN_SEL_X1_0 (0x1 << 6) +#define TPS65910_REG_VGAIN_SEL_X3 (0x2 << 6) +#define TPS65910_REG_VGAIN_SEL_X4 (0x3 << 6) + +#define TPS65910_REG_ILMAX_1_0_A (0x0 << 5) +#define TPS65910_REG_ILMAX_1_5_A (0x1 << 5) + +#define TPS65910_REG_TSTEP_ (0x0 << 2) +#define TPS65910_REG_TSTEP_12_5 (0x1 << 2) +#define TPS65910_REG_TSTEP_9_4 (0x2 << 2) +#define TPS65910_REG_TSTEP_7_5 (0x3 << 2) +#define TPS65910_REG_TSTEP_6_25 (0x4 << 2) +#define TPS65910_REG_TSTEP_4_7 (0x5 << 2) +#define TPS65910_REG_TSTEP_3_12 (0x6 << 2) +#define TPS65910_REG_TSTEP_2_5 (0x7 << 2) + +#define TPS65910_REG_ST_OFF (0x0) +#define TPS65910_REG_ST_ON_HI_POW (0x1) +#define TPS65910_REG_ST_OFF_1 (0x2) +#define TPS65910_REG_ST_ON_LOW_POW (0x3) + + +/* VDD2 & VDD1 voltage selection register. (VDD2_OP_REG & VDD1_OP_REG) */ +#define TPS65910_OP_REG_SEL (0x7F) + +#define TPS65910_OP_REG_CMD_MASK (0x1 << 7) +#define TPS65910_OP_REG_CMD_OP (0x0 << 7) +#define TPS65910_OP_REG_CMD_SR (0x1 << 7) + +#define TPS65910_OP_REG_SEL_MASK (0x7F) +#define TPS65910_OP_REG_SEL_0_9_5 (0x1F) /* 0.9500 V */ +#define TPS65910_OP_REG_SEL_1_1_3 (0x2E) /* 1.1375 V */ +#define TPS65910_OP_REG_SEL_1_2_0 (0x33) /* 1.2000 V */ +#define TPS65910_OP_REG_SEL_1_2_6 (0x38) /* 1.2625 V */ +#define TPS65910_OP_REG_SEL_1_3_2_5 (0x3D) /* 1.3250 V */ + +/* Device control register . (DEVCTRL_REG) */ +#define TPS65910_DEVCTRL_REG_SR_CTL_I2C_MASK (0x1 << 4) +#define TPS65910_DEVCTRL_REG_SR_CTL_I2C_SEL_SR_I2C (0x0 << 4) +#define TPS65910_DEVCTRL_REG_SR_CTL_I2C_SEL_CTL_I2C (0x1 << 4) +#endif -- 1.7.9.5 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot