1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * AD9523 SPI Low Jitter Clock Generator 4 * 5 * Copyright 2012 Analog Devices Inc. 6 */ 7 8 #ifndef IIO_FREQUENCY_AD9523_H_ 9 #define IIO_FREQUENCY_AD9523_H_ 10 11 enum outp_drv_mode { 12 TRISTATE, 13 LVPECL_8mA, 14 LVDS_4mA, 15 LVDS_7mA, 16 HSTL0_16mA, 17 HSTL1_8mA, 18 CMOS_CONF1, 19 CMOS_CONF2, 20 CMOS_CONF3, 21 CMOS_CONF4, 22 CMOS_CONF5, 23 CMOS_CONF6, 24 CMOS_CONF7, 25 CMOS_CONF8, 26 CMOS_CONF9 27 }; 28 29 enum ref_sel_mode { 30 NONEREVERTIVE_STAY_ON_REFB, 31 REVERT_TO_REFA, 32 SELECT_REFA, 33 SELECT_REFB, 34 EXT_REF_SEL 35 }; 36 37 /** 38 * struct ad9523_channel_spec - Output channel configuration 39 * 40 * @channel_num: Output channel number. 41 * @divider_output_invert_en: Invert the polarity of the output clock. 42 * @sync_ignore_en: Ignore chip-level SYNC signal. 43 * @low_power_mode_en: Reduce power used in the differential output modes. 44 * @use_alt_clock_src: Channel divider uses alternative clk source. 45 * @output_dis: Disables, powers down the entire channel. 46 * @driver_mode: Output driver mode (logic level family). 47 * @divider_phase: Divider initial phase after a SYNC. Range 0..63 48 LSB = 1/2 of a period of the divider input clock. 49 * @channel_divider: 10-bit channel divider. 50 * @extended_name: Optional descriptive channel name. 51 */ 52 53 struct ad9523_channel_spec { 54 unsigned channel_num; 55 bool divider_output_invert_en; 56 bool sync_ignore_en; 57 bool low_power_mode_en; 58 /* CH0..CH3 VCXO, CH4..CH9 VCO2 */ 59 bool use_alt_clock_src; 60 bool output_dis; 61 enum outp_drv_mode driver_mode; 62 unsigned char divider_phase; 63 unsigned short channel_divider; 64 char extended_name[16]; 65 }; 66 67 enum pll1_rzero_resistor { 68 RZERO_883_OHM, 69 RZERO_677_OHM, 70 RZERO_341_OHM, 71 RZERO_135_OHM, 72 RZERO_10_OHM, 73 RZERO_USE_EXT_RES = 8, 74 }; 75 76 enum rpole2_resistor { 77 RPOLE2_900_OHM, 78 RPOLE2_450_OHM, 79 RPOLE2_300_OHM, 80 RPOLE2_225_OHM, 81 }; 82 83 enum rzero_resistor { 84 RZERO_3250_OHM, 85 RZERO_2750_OHM, 86 RZERO_2250_OHM, 87 RZERO_2100_OHM, 88 RZERO_3000_OHM, 89 RZERO_2500_OHM, 90 RZERO_2000_OHM, 91 RZERO_1850_OHM, 92 }; 93 94 enum cpole1_capacitor { 95 CPOLE1_0_PF, 96 CPOLE1_8_PF, 97 CPOLE1_16_PF, 98 CPOLE1_24_PF, 99 _CPOLE1_24_PF, /* place holder */ 100 CPOLE1_32_PF, 101 CPOLE1_40_PF, 102 CPOLE1_48_PF, 103 }; 104 105 /** 106 * struct ad9523_platform_data - platform specific information 107 * 108 * @vcxo_freq: External VCXO frequency in Hz 109 * @refa_diff_rcv_en: REFA differential/single-ended input selection. 110 * @refb_diff_rcv_en: REFB differential/single-ended input selection. 111 * @zd_in_diff_en: Zero Delay differential/single-ended input selection. 112 * @osc_in_diff_en: OSC differential/ single-ended input selection. 113 * @refa_cmos_neg_inp_en: REFA single-ended neg./pos. input enable. 114 * @refb_cmos_neg_inp_en: REFB single-ended neg./pos. input enable. 115 * @zd_in_cmos_neg_inp_en: Zero Delay single-ended neg./pos. input enable. 116 * @osc_in_cmos_neg_inp_en: OSC single-ended neg./pos. input enable. 117 * @refa_r_div: PLL1 10-bit REFA R divider. 118 * @refb_r_div: PLL1 10-bit REFB R divider. 119 * @pll1_feedback_div: PLL1 10-bit Feedback N divider. 120 * @pll1_charge_pump_current_nA: Magnitude of PLL1 charge pump current (nA). 121 * @zero_delay_mode_internal_en: Internal, external Zero Delay mode selection. 122 * @osc_in_feedback_en: PLL1 feedback path, local feedback from 123 * the OSC_IN receiver or zero delay mode 124 * @pll1_loop_filter_rzero: PLL1 Loop Filter Zero Resistor selection. 125 * @ref_mode: Reference selection mode. 126 * @pll2_charge_pump_current_nA: Magnitude of PLL2 charge pump current (nA). 127 * @pll2_ndiv_a_cnt: PLL2 Feedback N-divider, A Counter, range 0..4. 128 * @pll2_ndiv_b_cnt: PLL2 Feedback N-divider, B Counter, range 0..63. 129 * @pll2_freq_doubler_en: PLL2 frequency doubler enable. 130 * @pll2_r2_div: PLL2 R2 divider, range 0..31. 131 * @pll2_vco_div_m1: VCO1 divider, range 3..5. 132 * @pll2_vco_div_m2: VCO2 divider, range 3..5. 133 * @rpole2: PLL2 loop filter Rpole resistor value. 134 * @rzero: PLL2 loop filter Rzero resistor value. 135 * @cpole1: PLL2 loop filter Cpole capacitor value. 136 * @rzero_bypass_en: PLL2 loop filter Rzero bypass enable. 137 * @num_channels: Array size of struct ad9523_channel_spec. 138 * @channels: Pointer to channel array. 139 * @name: Optional alternative iio device name. 140 */ 141 142 struct ad9523_platform_data { 143 unsigned long vcxo_freq; 144 145 /* Differential/ Single-Ended Input Configuration */ 146 bool refa_diff_rcv_en; 147 bool refb_diff_rcv_en; 148 bool zd_in_diff_en; 149 bool osc_in_diff_en; 150 151 /* 152 * Valid if differential input disabled 153 * if false defaults to pos input 154 */ 155 bool refa_cmos_neg_inp_en; 156 bool refb_cmos_neg_inp_en; 157 bool zd_in_cmos_neg_inp_en; 158 bool osc_in_cmos_neg_inp_en; 159 160 /* PLL1 Setting */ 161 unsigned short refa_r_div; 162 unsigned short refb_r_div; 163 unsigned short pll1_feedback_div; 164 unsigned short pll1_charge_pump_current_nA; 165 bool zero_delay_mode_internal_en; 166 bool osc_in_feedback_en; 167 enum pll1_rzero_resistor pll1_loop_filter_rzero; 168 169 /* Reference */ 170 enum ref_sel_mode ref_mode; 171 172 /* PLL2 Setting */ 173 unsigned int pll2_charge_pump_current_nA; 174 unsigned char pll2_ndiv_a_cnt; 175 unsigned char pll2_ndiv_b_cnt; 176 bool pll2_freq_doubler_en; 177 unsigned char pll2_r2_div; 178 unsigned char pll2_vco_div_m1; /* 3..5 */ 179 unsigned char pll2_vco_div_m2; /* 3..5 */ 180 181 /* Loop Filter PLL2 */ 182 enum rpole2_resistor rpole2; 183 enum rzero_resistor rzero; 184 enum cpole1_capacitor cpole1; 185 bool rzero_bypass_en; 186 187 /* Output Channel Configuration */ 188 int num_channels; 189 struct ad9523_channel_spec *channels; 190 191 char name[SPI_NAME_SIZE]; 192 }; 193 194 #endif /* IIO_FREQUENCY_AD9523_H_ */ 195