zynqmp_qspi_init_hw(9)

✨ zynqmp_qspi_init_hw(9) — the glow-up edition ✨

okay so bestie, welcome to the Kernel API Manual 💖 this is the page for zynqmp_qspi_init_hw, and honestly? it's giving "reset day, but make it fashion." we're gonna wake up the QSPI controller, fix its whole vibe, and get it ready to actually talk to flash. no cap. 🦋

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🌸 NAME 🌸

zynqmp_qspi_init_hw — Initialize the hardware 💅

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🎀 SYNOPSIS 🎀

void zynqmp_qspi_init_hw (struct zynqmp_qspi *xqspi );

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🫶 ARGUMENTS 🫶

• xqspi — Pointer to the zynqmp_qspi structure. that's your girl, that's the whole controller state, she's the main character here 👑

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✨ DESCRIPTION ✨

so like, when the QSPI controller wakes up from reset, it has Opinions. its configurable parameters come out of the box with these default settings:

• Host mode
• TX threshold set to 1
• RX threshold set to 1
• Flash memory interface mode enabled

and then this function does a little get-ready-with-me routine 🔥 it performs the following actions:

• Disable and clear all the interrupts
• Enable manual target select
• Enable manual start
• Deselect all the chip select lines
• Set the little endian mode of TX FIFO
• Set clock phase
• Set clock polarity and
• Enable the QSPI controller

basically: quiet the noise, take the wheel manually, unselect everybody, get the byte order and the clock vibes right, and then turn the thing on. it's giving "getting ready with me" but for silicon ⭐

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💜 SEE ALSO 💜

Kernel file ./drivers/spi/spi-zynqmp-gqspi.c

struct qspi_platform_data(9), struct zynqmp_qspi(9), zynqmp_gqspi_read(9), zynqmp_gqspi_write(9), zynqmp_gqspi_selecttarget(9), zynqmp_qspi_set_tapdelay(9), zynqmp_qspi_copy_read_data(9), zynqmp_qspi_chipselect(9), zynqmp_qspi_selectspimode(9), zynqmp_qspi_config_op(9), zynqmp_qspi_setup_op(9), zynqmp_qspi_filltxfifo(9), zynqmp_qspi_readrxfifo(9), zynqmp_qspi_fillgenfifo(9), zynqmp_qspi_disable_dma(9), zynqmp_qspi_enable_dma(9), zynqmp_process_dma_irq(9), zynqmp_qspi_irq(9), zynqmp_qspi_setuprxdma(9), zynqmp_qspi_write_op(9), zynqmp_qspi_read_op(9), zynqmp_qspi_suspend(9), zynqmp_qspi_resume(9), zynqmp_runtime_suspend(9), zynqmp_runtime_resume(9), zynqmp_qspi_exec_op(9), zynqmp_qspi_probe(9), zynqmp_qspi_remove(9)

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the whole squad's linked above, so go read them too, iykyk 😭 don't leave my girl zynqmp_qspi_remove(9) on read.

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and that's the page, bestie! 🍓 this came to you from the ./drivers/spi directory in the Kernel API Manual, dated October 2026, and it's all about zynqmp_qspi_init_hw(9) — go init that hardware, slay, periodt 💅🌈👑