1 files changed, 167 insertions, 0 deletions
diff --git a/board/freescale/imx91_evk/spl.c b/board/freescale/imx91_evk/spl.c
new file mode 100644
index 00000000000..46bde93fe3b
--- /dev/null
+++ b/board/freescale/imx91_evk/spl.c
@@ -0,0 +1,167 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2024 NXP
+ */
+
+#include <command.h>
+#include <cpu_func.h>
+#include <hang.h>
+#include <image.h>
+#include <init.h>
+#include <log.h>
+#include <spl.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <asm/arch/mu.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <asm/mach-imx/mxc_i2c.h>
+#include <asm/arch-mx7ulp/gpio.h>
+#include <asm/mach-imx/ele_api.h>
+#include <asm/mach-imx/syscounter.h>
+#include <asm/sections.h>
+#include <dm/uclass.h>
+#include <dm/device.h>
+#include <dm/uclass-internal.h>
+#include <dm/device-internal.h>
+#include <linux/delay.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/ccm_regs.h>
+#include <asm/arch/ddr.h>
+#include <power/pmic.h>
+#include <power/pca9450.h>
+#include <asm/arch/trdc.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int spl_board_boot_device(enum boot_device boot_dev_spl)
+{
+	return BOOT_DEVICE_BOOTROM;
+}
+
+void spl_board_init(void)
+{
+	int ret;
+
+	ret = ele_start_rng();
+	if (ret)
+		printf("Fail to start RNG: %d\n", ret);
+
+	puts("Normal Boot\n");
+}
+
+extern struct dram_timing_info dram_timing_1600mts;
+void spl_dram_init(void)
+{
+	struct dram_timing_info *ptiming = &dram_timing;
+
+	if (is_voltage_mode(VOLT_LOW_DRIVE))
+		ptiming = &dram_timing_1600mts;
+
+	printf("DDR: %uMTS\n", ptiming->fsp_msg[0].drate);
+	ddr_init(ptiming);
+}
+
+#if CONFIG_IS_ENABLED(DM_PMIC_PCA9450)
+int power_init_board(void)
+{
+	struct udevice *dev;
+	int ret;
+	unsigned int val = 0, buck_val;
+
+	ret = pmic_get("pmic@25", &dev);
+	if (ret == -ENODEV) {
+		puts("ERROR: Get PMIC PCA9451A failed!\n");
+		return ret;
+	}
+	if (ret != 0)
+		return ret;
+
+	/* BUCKxOUT_DVS0/1 control BUCK123 output */
+	pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29);
+
+	/* enable DVS control through PMIC_STBY_REQ */
+	pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
+
+	ret = pmic_reg_read(dev, PCA9450_PWR_CTRL);
+	if (ret < 0)
+		return ret;
+
+	val = ret;
+
+	if (is_voltage_mode(VOLT_LOW_DRIVE)) {
+		buck_val = 0x0c; /* 0.8V for Low drive mode */
+		printf("PMIC: Low Drive Voltage Mode\n");
+	} else if (is_voltage_mode(VOLT_NOMINAL_DRIVE)) {
+		buck_val = 0x10; /* 0.85V for Nominal drive mode */
+		printf("PMIC: Nominal Voltage Mode\n");
+	} else {
+		buck_val = 0x14; /* 0.9V for Over drive mode */
+		printf("PMIC: Over Drive Voltage Mode\n");
+	}
+
+	if (val & PCA9450_REG_PWRCTRL_TOFF_DEB) {
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, buck_val);
+		pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, buck_val);
+	} else {
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, buck_val + 0x4);
+		pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, buck_val + 0x4);
+	}
+
+	/* Set VDDQ to 1.1V from buck2 (buck2 not used for iMX91 EVK) */
+	pmic_reg_write(dev, PCA9450_BUCK2OUT_DVS0, 0x28);
+
+	/* set standby voltage to 0.65V */
+	if (val & PCA9450_REG_PWRCTRL_TOFF_DEB)
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x0);
+	else
+		pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x4);
+
+	/* I2C_LT_EN*/
+	pmic_reg_write(dev, 0xa, 0x3);
+	return 0;
+}
+#endif
+
+void board_init_f(ulong dummy)
+{
+	int ret;
+
+	/* Clear the BSS. */
+	memset(__bss_start, 0, __bss_end - __bss_start);
+
+	timer_init();
+
+	arch_cpu_init();
+
+	spl_early_init();
+
+	preloader_console_init();
+
+	ret = imx9_probe_mu();
+	if (ret) {
+		printf("Fail to init ELE API\n");
+	} else {
+		debug("SOC: 0x%x\n", gd->arch.soc_rev);
+		debug("LC: 0x%x\n", gd->arch.lifecycle);
+	}
+
+	clock_init_late();
+
+	power_init_board();
+
+	if (!is_voltage_mode(VOLT_LOW_DRIVE))
+		set_arm_clk(get_cpu_speed_grade_hz());
+
+	/* Init power of mix */
+	soc_power_init();
+
+	/* Setup TRDC for DDR access */
+	trdc_init();
+
+	/* DDR initialization */
+	spl_dram_init();
+
+	board_init_r(NULL, 0);
+}