void boot_sense_jtag_probe(void)
{
/* Hardware default (sticky):
* - clock gating:
* - QM_CLK_PERIPH_REGISTER and QM_CLK_PERIPH_GPIO_REGISTER enabled
* - QM_CLK_PERIPH_CLK disabled
* - pin muxing
* - gpio's muxed out
* - input pads enabled
* - pad pullup disabled
* - gpio port configured as input
*/
qm_gpio_state_t state;
qm_pmux_pullup_en(WAIT_FOR_JTAG_PAD, true);
qm_pmux_select(WAIT_FOR_JTAG_PAD, QM_PMUX_FN_0);
qm_pmux_input_en(WAIT_FOR_JTAG_PAD, true);
clk_periph_enable(CLK_PERIPH_REGISTER | CLK_PERIPH_CLK |
CLK_PERIPH_GPIO_REGISTER);
do {
/* Busy loop to allow JTAG access */
qm_gpio_read_pin(QM_GPIO_0, WAIT_FOR_JTAG_GPIO, &state);
} while (state == QM_GPIO_LOW);
/* Restore hardware default settings */
clk_periph_disable(CLK_PERIPH_CLK);
qm_pmux_pullup_en(WAIT_FOR_JTAG_PAD, false);
};
static int pinmux_dev_pullup(struct device *dev, uint32_t pin,
uint8_t func)
{
ARG_UNUSED(dev);
return qm_pmux_pullup_en(pin, func) == QM_RC_OK ? 0 : -EIO;
}
static void pin_mux_setup(void)
{
/* Set GPIO mux mode. */
qm_pmux_pullup_en(QM_PIN_ID_11, true);
qm_pmux_select(QM_PIN_ID_11, QM_PIN_11_FN_GPIO_SS_3);
qm_pmux_select(QM_PIN_ID_10, QM_PIN_10_FN_GPIO_SS_2);
/* Enable input on PIN_INTR. */
qm_pmux_input_en(QM_PIN_ID_11, true);
}
