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d3b9b79968
The phyCORE-i.MX 93 is available in various variants. Relevant variant options for the spl/u-boot are: - with or without HS400 support for the eMMC - with 1GB ram chip, or 2GB ram chip The phyCORE's eeprom contains all information about the existing variant options. Add evaluation of the eeprom data to the spl/u-boot to enable/disable HS400 and to select the appropriate ram configuration at startup. Signed-off-by: Christoph Stoidner <c.stoidner@phytec.de> Reviewed-by: Wadim Egorov <w.egorov@phytec.de> Reviewed-by: Yannic Moog <y.moog@phytec.de> Tested-by: Primoz Fiser <primoz.fiser@norik.com>
93 lines
1.8 KiB
C
93 lines
1.8 KiB
C
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (C) 2023 PHYTEC Messtechnik GmbH
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* Author: Christoph Stoidner <c.stoidner@phytec.de>
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* Copyright (C) 2024 Mathieu Othacehe <m.othacehe@gmail.com>
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* Copyright (C) 2024 PHYTEC Messtechnik GmbH
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*/
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#include <asm/arch-imx9/ccm_regs.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/arch-imx9/imx93_pins.h>
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#include <asm/arch/clock.h>
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#include <asm/global_data.h>
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#include <asm/mach-imx/boot_mode.h>
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#include <env.h>
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#include <fdt_support.h>
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#include "../common/imx93_som_detection.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define EEPROM_ADDR 0x50
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int board_init(void)
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{
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int ret = phytec_eeprom_data_setup(NULL, 2, EEPROM_ADDR);
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if (ret)
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printf("%s: EEPROM data init failed\n", __func__);
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return 0;
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}
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int board_mmc_get_env_dev(int devno)
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{
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return devno;
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}
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int board_late_init(void)
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{
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switch (get_boot_device()) {
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case SD2_BOOT:
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env_set_ulong("mmcdev", 1);
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break;
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case MMC1_BOOT:
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env_set_ulong("mmcdev", 0);
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break;
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default:
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break;
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}
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return 0;
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}
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static void emmc_fixup(void *blob, struct phytec_eeprom_data *data)
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{
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enum phytec_imx93_voltage voltage = phytec_imx93_get_voltage(data);
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int offset;
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if (voltage == PHYTEC_IMX93_VOLTAGE_INVALID)
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goto err;
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if (voltage == PHYTEC_IMX93_VOLTAGE_1V8) {
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offset = fdt_node_offset_by_compat_reg(blob, "fsl,imx93-usdhc",
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0x42850000);
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if (offset)
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fdt_delprop(blob, offset, "no-1-8-v");
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else
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goto err;
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}
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return;
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err:
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printf("Could not detect eMMC VDD-IO. Fall back to default.\n");
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}
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int board_fix_fdt(void *blob)
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{
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struct phytec_eeprom_data data;
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phytec_eeprom_data_setup(&data, 2, EEPROM_ADDR);
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emmc_fixup(blob, &data);
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return 0;
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}
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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emmc_fixup(blob, NULL);
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return 0;
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}
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