u-boot/arch/arm/mach-imx/imx8/misc.c

// SPDX-License-Identifier: GPL-2.0+
#include <common.h>
#include <asm/arch/sci/sci.h>

int sc_pm_setup_uart(sc_rsrc_t uart_rsrc, sc_pm_clock_rate_t clk_rate)
{
	sc_pm_clock_rate_t rate = clk_rate;
	int ret;

	/* Power up UARTn */
	ret = sc_pm_set_resource_power_mode(-1, uart_rsrc, SC_PM_PW_MODE_ON);
	if (ret)
		return ret;

	/* Set UARTn clock root to 'rate' MHz */
	ret = sc_pm_set_clock_rate(-1, uart_rsrc, SC_PM_CLK_PER, &rate);
	if (ret)
		return ret;

	/* Enable UARTn clock root */
	ret = sc_pm_clock_enable(-1, uart_rsrc, SC_PM_CLK_PER, true, false);
	if (ret)
		return ret;

	return 0;
}

void build_info(void)
{
	u32 sc_build = 0, sc_commit = 0;

	/* Get SCFW build and commit id */
	sc_misc_build_info(-1, &sc_build, &sc_commit);
	if (!sc_build) {
		printf("SCFW does not support build info\n");
		sc_commit = 0; /* Display 0 if build info not supported */
	}
	printf("Build: SCFW %x\n", sc_commit);
}