STRUCT AD9523_PLATFORM_DATA(9)

🎀 STRUCT AD9523_PLATFORM_DATA(9) 🎀

okay bestie, so this is a page straight outta the Kernel API Manual ✨ and it's literally all about struct ad9523_platform_data — the vibe-check sheet where you tell the kernel everything it needs to know about your specific AD9523 setup. platform specific information, no cap 💅

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🌸 NAME 🌸

struct ad9523_platform_data — platform specific information, fr fr 🫶

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✨ SYNOPSIS ✨

here's the whole glow-up, character for character, don't touch a thing:

struct ad9523_platform_data {
    unsigned long vcxo_freq;
    bool refa_diff_rcv_en;
    bool refb_diff_rcv_en;
    bool zd_in_diff_en;
    bool osc_in_diff_en;
    bool refa_cmos_neg_inp_en;
    bool refb_cmos_neg_inp_en;
    bool zd_in_cmos_neg_inp_en;
    bool osc_in_cmos_neg_inp_en;
    unsigned short                  refa_r_div;
    unsigned short                  refb_r_div;
    unsigned short                  pll1_feedback_div;
    unsigned short                  pll1_charge_pump_current_nA;
    bool zero_delay_mode_internal_en;
    bool osc_in_feedback_en;
    enum pll1_rzero_resistor        pll1_loop_filter_rzero;
    enum ref_sel_mode               ref_mode;
    unsigned int                    pll2_charge_pump_current_nA;
    unsigned char                   pll2_ndiv_a_cnt;
    unsigned char                   pll2_ndiv_b_cnt;
    bool pll2_freq_doubler_en;
    unsigned char                   pll2_r2_div;
    unsigned char                   pll2_vco_div_m1;
    unsigned char                   pll2_vco_div_m2;
    enum rpole2_resistor            rpole2;
    enum rzero_resistor             rzero;
    enum cpole1_capacitor           cpole1;
    bool rzero_bypass_en;
    int num_channels;
    struct ad9523_channel_spec      *channels;
    char name[SPI_NAME_SIZE];
 };

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💜 MEMBERS 💜

okay so every single field, one by one, let's go 🏃‍♀️💨

• vcxo_freq — the External VCXO frequency, in Hz ⏱️
• refa_diff_rcv_en — REFA differential/single-ended input selection. pick your fighter 💅
• refb_diff_rcv_en — REFB differential/single-ended input selection. same energy, different ref 🦋
• zd_in_diff_en — Zero Delay differential/single-ended input selection.
• osc_in_diff_en — OSC differential/ single-ended input selection. (yes that spacing is canon, leave it 😌)
• refa_cmos_neg_inp_en — REFA single-ended neg./pos. input enable.
• refb_cmos_neg_inp_en — REFB single-ended neg./pos. input enable.
• zd_in_cmos_neg_inp_en — Zero Delay single-ended neg./pos. input enable.
• osc_in_cmos_neg_inp_en — OSC single-ended neg./pos. input enable.
• refa_r_div — PLL1 10-bit REFA R divider ✨
• refb_r_div — PLL1 10-bit REFB R divider ✨
• pll1_feedback_div — PLL1 10-bit Feedback N divider.
• pll1_charge_pump_current_nA — Magnitude of PLL1 charge pump current (nA). it's giving pump 🔥
• zero_delay_mode_internal_en — Internal, external Zero Delay mode selection.
• osc_in_feedback_en — PLL1 feedback path, local feedback from the OSC_IN receiver or zero delay mode 🌀
• pll1_loop_filter_rzero — PLL1 Loop Filter Zero Resistor selection.
• ref_mode — Reference selection mode. main character reference, honestly 👑
• pll2_charge_pump_current_nA — Magnitude of PLL2 charge pump current (nA).
• pll2_ndiv_a_cnt — PLL2 Feedback N-divider, A Counter, range 0..4.
• pll2_ndiv_b_cnt — PLL2 Feedback N-divider, B Counter, range 0..63.
• pll2_freq_doubler_en — PLL2 frequency doubler enable. double it and give it to the next one 😭
• pll2_r2_div — PLL2 R2 divider, range 0..31.
• pll2_vco_div_m1 — VCO1 divider, range 3..5.
• pll2_vco_div_m2 — VCO2 divider, range 3..5.
• rpole2 — PLL2 loop filter Rpole resistor value.
• rzero — PLL2 loop filter Rzero resistor value.
• cpole1 — PLL2 loop filter Cpole capacitor value.
• rzero_bypass_en — PLL2 loop filter Rzero bypass enable. skip the resistor, live your truth 🙈
• num_channels — Array size of struct ad9523_channel_spec.
• channels — Pointer to channel array.
• name — Optional alternative iio device name. name your baby 🍼💖

btw bestie, those dividers and counters have hard ranges (like 0..4, 0..63, 0..31, 3..5) — respect them, don't just freestyle 🚨

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/iio/frequency/ad9523.h
• struct ad9523_channel_spec(9) — the channel bestie that this struct points at 🫶

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and that's the whole page, periodt 💅 this little gem lives under ./include/linux/iio/frequency, dated October 2026 — so go forth, configure your AD9523, and slay ✨🦋💖