1cb199102SNishanth Menon /* 2cb199102SNishanth Menon * (C) Copyright 2012-2013 3cb199102SNishanth Menon * Texas Instruments, <www.ti.com> 4cb199102SNishanth Menon * 5*1a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 6cb199102SNishanth Menon */ 7cb199102SNishanth Menon #include <config.h> 8cb199102SNishanth Menon #include <palmas.h> 9cb199102SNishanth Menon 1012733881SNishanth Menon void palmas_init_settings(void) 11cb199102SNishanth Menon { 12e9090fa4SLubomir Popov #ifdef CONFIG_PALMAS_SMPS7_FPWM 13e9090fa4SLubomir Popov int err; 14e9090fa4SLubomir Popov /* 15e9090fa4SLubomir Popov * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to 16e9090fa4SLubomir Popov * forced PWM mode. This reduces noise (but affects efficiency). 17e9090fa4SLubomir Popov */ 18e9090fa4SLubomir Popov u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM; 19e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val); 20e9090fa4SLubomir Popov if (err) 21e9090fa4SLubomir Popov printf("palmas: could not force PWM for SMPS7: err = %d\n", 22e9090fa4SLubomir Popov err); 23e9090fa4SLubomir Popov #endif 24cb199102SNishanth Menon } 25cb199102SNishanth Menon 26384bcae0SNishanth Menon int palmas_mmc1_poweron_ldo(void) 27cb199102SNishanth Menon { 28cb199102SNishanth Menon u8 val = 0; 29cb199102SNishanth Menon 30e9090fa4SLubomir Popov #if defined(CONFIG_DRA7XX) 31e9090fa4SLubomir Popov /* 32e9090fa4SLubomir Popov * Currently valid for the dra7xx_evm board: 33e9090fa4SLubomir Popov * Set TPS659038 LDO1 to 3.0 V 34e9090fa4SLubomir Popov */ 35e9090fa4SLubomir Popov val = LDO_VOLT_3V0; 36e9090fa4SLubomir Popov if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) { 37e9090fa4SLubomir Popov printf("tps65903x: could not set LDO1 voltage.\n"); 38cb199102SNishanth Menon return 1; 39cb199102SNishanth Menon } 40e9090fa4SLubomir Popov /* TURN ON LDO1 */ 41e9090fa4SLubomir Popov val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 42e9090fa4SLubomir Popov if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) { 43e9090fa4SLubomir Popov printf("tps65903x: could not turn on LDO1.\n"); 44cb199102SNishanth Menon return 1; 45cb199102SNishanth Menon } 46cb199102SNishanth Menon return 0; 47e9090fa4SLubomir Popov #else 48e9090fa4SLubomir Popov /* 49e9090fa4SLubomir Popov * We assume that this is a OMAP543X + TWL603X board: 50e9090fa4SLubomir Popov * Set TWL6035/37 LDO9 to 3.0 V 51e9090fa4SLubomir Popov */ 52e9090fa4SLubomir Popov val = LDO_VOLT_3V0; 53e9090fa4SLubomir Popov return twl603x_mmc1_set_ldo9(val); 54e9090fa4SLubomir Popov #endif 55e9090fa4SLubomir Popov } 56e9090fa4SLubomir Popov 57e9090fa4SLubomir Popov /* 58e9090fa4SLubomir Popov * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are 59e9090fa4SLubomir Popov * powered by an external 3.3 V regulator, while the output of LDO9 60e9090fa4SLubomir Popov * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that 61e9090fa4SLubomir Popov * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards). 62e9090fa4SLubomir Popov */ 63e9090fa4SLubomir Popov int twl603x_mmc1_set_ldo9(u8 vsel) 64e9090fa4SLubomir Popov { 65e9090fa4SLubomir Popov u8 cval = 0, vval = 0; /* Off by default */ 66e9090fa4SLubomir Popov int err; 67e9090fa4SLubomir Popov 68e9090fa4SLubomir Popov if (vsel) { 69e9090fa4SLubomir Popov /* Turn on */ 70e9090fa4SLubomir Popov if (vsel > LDO_VOLT_3V3) { 71e9090fa4SLubomir Popov /* Put LDO9 in bypass */ 72e9090fa4SLubomir Popov cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 73e9090fa4SLubomir Popov vval = LDO_VOLT_3V3; 74e9090fa4SLubomir Popov } else { 75e9090fa4SLubomir Popov cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 76e9090fa4SLubomir Popov vval = vsel & 0x3f; 77e9090fa4SLubomir Popov } 78e9090fa4SLubomir Popov } 79e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval); 80e9090fa4SLubomir Popov if (err) { 81e9090fa4SLubomir Popov printf("twl603x: could not set LDO9 %s: err = %d\n", 82e9090fa4SLubomir Popov vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err); 83e9090fa4SLubomir Popov return err; 84e9090fa4SLubomir Popov } 85e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval); 86e9090fa4SLubomir Popov if (err) 87e9090fa4SLubomir Popov printf("twl603x: could not turn %s LDO9: err = %d\n", 88e9090fa4SLubomir Popov cval ? "on" : "off", err); 89e9090fa4SLubomir Popov return err; 90e9090fa4SLubomir Popov } 91e9090fa4SLubomir Popov 92e9090fa4SLubomir Popov #ifdef CONFIG_PALMAS_AUDPWR 93e9090fa4SLubomir Popov /* 94e9090fa4SLubomir Popov * Turn audio codec power and 32 kHz clock on/off. Use for 95e9090fa4SLubomir Popov * testing OMAP543X + TWL603X + TWL604X boards only. 96e9090fa4SLubomir Popov */ 97e9090fa4SLubomir Popov int twl603x_audio_power(u8 on) 98e9090fa4SLubomir Popov { 99e9090fa4SLubomir Popov u8 cval = 0, vval = 0, c32k = 0; 100e9090fa4SLubomir Popov int err; 101e9090fa4SLubomir Popov 102e9090fa4SLubomir Popov if (on) { 103e9090fa4SLubomir Popov vval = SMPS_VOLT_2V1; 104e9090fa4SLubomir Popov cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO; 105e9090fa4SLubomir Popov c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 106e9090fa4SLubomir Popov } 107e9090fa4SLubomir Popov /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */ 108e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval); 109e9090fa4SLubomir Popov if (err) { 110e9090fa4SLubomir Popov printf("twl603x: could not set SMPS9 voltage: err = %d\n", 111e9090fa4SLubomir Popov err); 112e9090fa4SLubomir Popov return err; 113e9090fa4SLubomir Popov } 114e9090fa4SLubomir Popov /* Turn on or off SMPS9 */ 115e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval); 116e9090fa4SLubomir Popov if (err) { 117e9090fa4SLubomir Popov printf("twl603x: could not turn SMPS9 %s: err = %d\n", 118e9090fa4SLubomir Popov cval ? "on" : "off", err); 119e9090fa4SLubomir Popov return err; 120e9090fa4SLubomir Popov } 121e9090fa4SLubomir Popov /* Output 32 kHz clock on or off */ 122e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k); 123e9090fa4SLubomir Popov if (err) 124e9090fa4SLubomir Popov printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n", 125e9090fa4SLubomir Popov c32k ? "on" : "off", err); 126e9090fa4SLubomir Popov return err; 127e9090fa4SLubomir Popov } 128e9090fa4SLubomir Popov #endif 129e9090fa4SLubomir Popov 130e9090fa4SLubomir Popov /* 131e9090fa4SLubomir Popov * Enable/disable back-up battery (or super cap) charging on TWL6035/37. 132e9090fa4SLubomir Popov * Please use defined BB_xxx values. 133e9090fa4SLubomir Popov */ 134e9090fa4SLubomir Popov int twl603x_enable_bb_charge(u8 bb_fields) 135e9090fa4SLubomir Popov { 136e9090fa4SLubomir Popov u8 val = bb_fields & 0x0f; 137e9090fa4SLubomir Popov int err; 138e9090fa4SLubomir Popov 139e9090fa4SLubomir Popov val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN); 140e9090fa4SLubomir Popov err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val); 141e9090fa4SLubomir Popov if (err) 142e9090fa4SLubomir Popov printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n", 143e9090fa4SLubomir Popov val, err); 144e9090fa4SLubomir Popov return err; 145cb199102SNishanth Menon } 146