1 /* 2 * (C) Copyright 2012-2013 3 * Texas Instruments, <www.ti.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 #include <config.h> 8 #include <palmas.h> 9 10 void palmas_init_settings(void) 11 { 12 #ifdef CONFIG_PALMAS_SMPS7_FPWM 13 int err; 14 /* 15 * Set SMPS7 (1.8 V I/O supply on platforms with TWL6035/37) to 16 * forced PWM mode. This reduces noise (but affects efficiency). 17 */ 18 u8 val = SMPS_MODE_SLP_FPWM | SMPS_MODE_ACT_FPWM; 19 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS7_CTRL, val); 20 if (err) 21 printf("palmas: could not force PWM for SMPS7: err = %d\n", 22 err); 23 #endif 24 } 25 26 #if defined(CONFIG_OMAP54XX) 27 int lp873x_mmc1_poweron_ldo(uint voltage) 28 { 29 if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_VOLTAGE, 30 voltage)) { 31 printf("lp873x: could not set LDO1 voltage.\n"); 32 return 1; 33 } 34 /* TURN ON LDO1 */ 35 if (palmas_i2c_write_u8(LP873X_LDO1_ADDR, LP873X_LDO1_CTRL, 36 LP873X_LDO_CTRL_EN | LP873X_LDO_CTRL_RDIS_EN)) { 37 printf("lp873x: could not turn on LDO1.\n"); 38 return 1; 39 } 40 return 0; 41 42 } 43 #endif 44 45 int palmas_mmc1_poweron_ldo(uint voltage) 46 { 47 u8 val = 0; 48 49 #if defined(CONFIG_DRA7XX) 50 int ret; 51 /* 52 * Currently valid for the dra7xx_evm board: 53 * Set TPS659038 LDO1 to 3.0 V or 1.8V 54 */ 55 ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, voltage); 56 if (ret) { 57 printf("tps65903x: could not set LDO1 voltage.\n"); 58 return ret; 59 } 60 /* TURN ON LDO1 */ 61 val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 62 ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val); 63 if (ret) { 64 printf("tps65903x: could not turn on LDO1.\n"); 65 return ret; 66 } 67 return 0; 68 #else 69 /* 70 * We assume that this is a OMAP543X + TWL603X board: 71 * Set TWL6035/37 LDO9 to 3.0 V 72 */ 73 val = LDO_VOLT_3V0; 74 return twl603x_mmc1_set_ldo9(val); 75 #endif 76 } 77 78 /* 79 * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are 80 * powered by an external 3.3 V regulator, while the output of LDO9 81 * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that 82 * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards). 83 */ 84 int twl603x_mmc1_set_ldo9(u8 vsel) 85 { 86 u8 cval = 0, vval = 0; /* Off by default */ 87 int err; 88 89 if (vsel) { 90 /* Turn on */ 91 if (vsel > LDO_VOLT_3V3) { 92 /* Put LDO9 in bypass */ 93 cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 94 vval = LDO_VOLT_3V3; 95 } else { 96 cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 97 vval = vsel & 0x3f; 98 } 99 } 100 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval); 101 if (err) { 102 printf("twl603x: could not set LDO9 %s: err = %d\n", 103 vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err); 104 return err; 105 } 106 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval); 107 if (err) 108 printf("twl603x: could not turn %s LDO9: err = %d\n", 109 cval ? "on" : "off", err); 110 return err; 111 } 112 113 #ifdef CONFIG_PALMAS_AUDPWR 114 /* 115 * Turn audio codec power and 32 kHz clock on/off. Use for 116 * testing OMAP543X + TWL603X + TWL604X boards only. 117 */ 118 int twl603x_audio_power(u8 on) 119 { 120 u8 cval = 0, vval = 0, c32k = 0; 121 int err; 122 123 if (on) { 124 vval = SMPS_VOLT_2V1; 125 cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO; 126 c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 127 } 128 /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */ 129 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval); 130 if (err) { 131 printf("twl603x: could not set SMPS9 voltage: err = %d\n", 132 err); 133 return err; 134 } 135 /* Turn on or off SMPS9 */ 136 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval); 137 if (err) { 138 printf("twl603x: could not turn SMPS9 %s: err = %d\n", 139 cval ? "on" : "off", err); 140 return err; 141 } 142 /* Output 32 kHz clock on or off */ 143 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k); 144 if (err) 145 printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n", 146 c32k ? "on" : "off", err); 147 return err; 148 } 149 #endif 150 151 #ifdef CONFIG_PALMAS_USB_SS_PWR 152 /** 153 * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations 154 * for the USB Super speed SMPS10 regulator. 155 * 156 * @return 0 157 */ 158 int palmas_enable_ss_ldo(void) 159 { 160 /* Enable smps10 regulator */ 161 return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL, 162 SMPS10_MODE_ACTIVE_D); 163 } 164 #endif 165 166 /* 167 * Enable/disable back-up battery (or super cap) charging on TWL6035/37. 168 * Please use defined BB_xxx values. 169 */ 170 int twl603x_enable_bb_charge(u8 bb_fields) 171 { 172 u8 val = bb_fields & 0x0f; 173 int err; 174 175 val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN); 176 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val); 177 if (err) 178 printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n", 179 val, err); 180 return err; 181 } 182