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 int palmas_mmc1_poweron_ldo(void) 27 { 28 u8 val = 0; 29 30 #if defined(CONFIG_DRA7XX) || defined(CONFIG_AM57XX) 31 /* 32 * Currently valid for the dra7xx_evm board: 33 * Set TPS659038 LDO1 to 3.0 V 34 */ 35 val = LDO_VOLT_3V0; 36 if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, val)) { 37 printf("tps65903x: could not set LDO1 voltage.\n"); 38 return 1; 39 } 40 /* TURN ON LDO1 */ 41 val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 42 if (palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val)) { 43 printf("tps65903x: could not turn on LDO1.\n"); 44 return 1; 45 } 46 return 0; 47 #else 48 /* 49 * We assume that this is a OMAP543X + TWL603X board: 50 * Set TWL6035/37 LDO9 to 3.0 V 51 */ 52 val = LDO_VOLT_3V0; 53 return twl603x_mmc1_set_ldo9(val); 54 #endif 55 } 56 57 /* 58 * On some OMAP5 + TWL603X hardware the SD card socket and LDO9_IN are 59 * powered by an external 3.3 V regulator, while the output of LDO9 60 * supplies VDDS_SDCARD for the OMAP5 interface only. This implies that 61 * LDO9 could be set to 'bypass' mode when required (e.g. for 3.3 V cards). 62 */ 63 int twl603x_mmc1_set_ldo9(u8 vsel) 64 { 65 u8 cval = 0, vval = 0; /* Off by default */ 66 int err; 67 68 if (vsel) { 69 /* Turn on */ 70 if (vsel > LDO_VOLT_3V3) { 71 /* Put LDO9 in bypass */ 72 cval = LDO9_BYP_EN | RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 73 vval = LDO_VOLT_3V3; 74 } else { 75 cval = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 76 vval = vsel & 0x3f; 77 } 78 } 79 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_VOLTAGE, vval); 80 if (err) { 81 printf("twl603x: could not set LDO9 %s: err = %d\n", 82 vsel > LDO_VOLT_3V3 ? "bypass" : "voltage", err); 83 return err; 84 } 85 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, LDO9_CTRL, cval); 86 if (err) 87 printf("twl603x: could not turn %s LDO9: err = %d\n", 88 cval ? "on" : "off", err); 89 return err; 90 } 91 92 #ifdef CONFIG_PALMAS_AUDPWR 93 /* 94 * Turn audio codec power and 32 kHz clock on/off. Use for 95 * testing OMAP543X + TWL603X + TWL604X boards only. 96 */ 97 int twl603x_audio_power(u8 on) 98 { 99 u8 cval = 0, vval = 0, c32k = 0; 100 int err; 101 102 if (on) { 103 vval = SMPS_VOLT_2V1; 104 cval = SMPS_MODE_SLP_AUTO | SMPS_MODE_ACT_AUTO; 105 c32k = RSC_MODE_SLEEP | RSC_MODE_ACTIVE; 106 } 107 /* Set SMPS9 to 2.1 V (for TWL604x), or to 0 (off) */ 108 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_VOLTAGE, vval); 109 if (err) { 110 printf("twl603x: could not set SMPS9 voltage: err = %d\n", 111 err); 112 return err; 113 } 114 /* Turn on or off SMPS9 */ 115 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS9_CTRL, cval); 116 if (err) { 117 printf("twl603x: could not turn SMPS9 %s: err = %d\n", 118 cval ? "on" : "off", err); 119 return err; 120 } 121 /* Output 32 kHz clock on or off */ 122 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, CLK32KGAUDIO_CTRL, c32k); 123 if (err) 124 printf("twl603x: could not turn CLK32KGAUDIO %s: err = %d\n", 125 c32k ? "on" : "off", err); 126 return err; 127 } 128 #endif 129 130 #ifdef CONFIG_PALMAS_USB_SS_PWR 131 /** 132 * @brief palmas_enable_ss_ldo - Configure EVM board specific configurations 133 * for the USB Super speed SMPS10 regulator. 134 * 135 * @return 0 136 */ 137 int palmas_enable_ss_ldo(void) 138 { 139 /* Enable smps10 regulator */ 140 return palmas_i2c_write_u8(TWL603X_CHIP_P1, SMPS10_CTRL, 141 SMPS10_MODE_ACTIVE_D); 142 } 143 #endif 144 145 /* 146 * Enable/disable back-up battery (or super cap) charging on TWL6035/37. 147 * Please use defined BB_xxx values. 148 */ 149 int twl603x_enable_bb_charge(u8 bb_fields) 150 { 151 u8 val = bb_fields & 0x0f; 152 int err; 153 154 val |= (VRTC_EN_SLP | VRTC_EN_OFF | VRTC_PWEN); 155 err = palmas_i2c_write_u8(TWL603X_CHIP_P1, BB_VRTC_CTRL, val); 156 if (err) 157 printf("twl603x: could not set BB_VRTC_CTRL to 0x%02x: err = %d\n", 158 val, err); 159 return err; 160 } 161