how to set the High-drive QSPI?

 nrf_drv_qspi_config_t config;
        config.pins.csn_pin = FLASH_QSPI_CSN_NUMBER;
        config.pins.sck_pin = FLASH_QSPI_SCK_NUMBER;
        config.pins.io0_pin = FLASH_QSPI_IO0_NUMBER;
        config.pins.io1_pin = FLASH_QSPI_IO1_NUMBER;
        config.pins.io2_pin = FLASH_QSPI_IO2_NUMBER;
        config.pins.io3_pin = FLASH_QSPI_IO3_NUMBER;


        config.prot_if.readoc = NRF_QSPI_READOC_READ4O;
        config.prot_if.writeoc = NRF_QSPI_WRITEOC_PP4O;
        config.prot_if.addrmode = NRF_QSPI_ADDRMODE_24BIT;
        config.prot_if.dpmconfig = 0;
        config.phy_if.sck_delay = 0x01;
        config.phy_if.dpmen = 0;
        config.phy_if.spi_mode = NRF_QSPI_MODE_0;
        config.phy_if.sck_freq = FLASH_QSPI_HZ;
        config.irq_priority = 0x06;
        config.xip_offset = 0;
        int err_code = nrf_drv_qspi_init(&config, NULL, NULL);
        APP_ERROR_CHECK(err_code);




        nrf_gpio_cfg(FLASH_QSPI_CSN_NUMBER,
                     NRF_GPIO_PIN_DIR_OUTPUT,
                     NRF_GPIO_PIN_INPUT_CONNECT,
                     NRF_GPIO_PIN_NOPULL,
                     NRF_GPIO_PIN_H0H1,
                     NRF_GPIO_PIN_NOSENSE);

        nrf_gpio_cfg(FLASH_QSPI_SCK_NUMBER,
                     NRF_GPIO_PIN_DIR_OUTPUT,
                     NRF_GPIO_PIN_INPUT_CONNECT,
                     NRF_GPIO_PIN_NOPULL,
                     NRF_GPIO_PIN_H0H1,
                     NRF_GPIO_PIN_NOSENSE);

        nrf_gpio_cfg(FLASH_QSPI_IO1_NUMBER,
                     NRF_GPIO_PIN_DIR_OUTPUT,
                     NRF_GPIO_PIN_INPUT_CONNECT,
                     NRF_GPIO_PIN_NOPULL,
                     NRF_GPIO_PIN_H0H1,
                     NRF_GPIO_PIN_NOSENSE);

        nrf_gpio_cfg(FLASH_QSPI_IO2_NUMBER,
                     NRF_GPIO_PIN_DIR_OUTPUT,
                     NRF_GPIO_PIN_INPUT_CONNECT,
                     NRF_GPIO_PIN_NOPULL,
                     NRF_GPIO_PIN_H0H1,
                     NRF_GPIO_PIN_NOSENSE);

        nrf_gpio_cfg(FLASH_QSPI_IO3_NUMBER,
                     NRF_GPIO_PIN_DIR_OUTPUT,
                     NRF_GPIO_PIN_INPUT_CONNECT,
                     NRF_GPIO_PIN_NOPULL,
                     NRF_GPIO_PIN_H0H1,
                     NRF_GPIO_PIN_NOSENSE);