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/arm-trusted-firmware-2.8.0/drivers/st/spi/
A Dstm32_qspi.c363 unsigned long qspi_clk = clk_get_rate(stm32_qspi.clock_id); in stm32_qspi_set_speed() local
368 if (qspi_clk == 0U) { in stm32_qspi_set_speed()
373 prescaler = div_round_up(qspi_clk, hz) - 1U; in stm32_qspi_set_speed()
379 csht = div_round_up((5U * qspi_clk) / (prescaler + 1U), FREQ_100MHZ); in stm32_qspi_set_speed()
392 VERBOSE("%s: speed=%lu\n", __func__, qspi_clk / (prescaler + 1U)); in stm32_qspi_set_speed()

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