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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Ahmad Fatoum, Pengutronix
*/
#include <bootsource.h>
#include <common.h>
#include <deep-probe.h>
#include <init.h>
#include <linux/phy.h>
#include <linux/sizes.h>
#include <mach/bbu.h>
#include <envfs.h>
#define PHY_ID_AR8031 0x004dd074
#define AR_PHY_ID_MASK 0xffffffff
static int ar8031_phy_fixup(struct phy_device *phydev)
{
/*
* Enable 1.8V(SEL_1P5_1P8_POS_REG) on
* Phy control debug reg 0
*/
phy_write(phydev, 0x1d, 0x1f);
phy_write(phydev, 0x1e, 0x8);
/* rgmii tx clock delay enable */
phy_write(phydev, 0x1d, 0x05);
phy_write(phydev, 0x1e, 0x100);
return 0;
}
static int imx8mn_evk_probe(struct device_d *dev)
{
int emmc_bbu_flag = 0;
int sd_bbu_flag = 0;
if (bootsource_get() == BOOTSOURCE_MMC) {
if (bootsource_get_instance() == 2) {
of_device_enable_path("/chosen/environment-emmc");
emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
} else {
of_device_enable_path("/chosen/environment-sd");
sd_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
}
} else {
of_device_enable_path("/chosen/environment-emmc");
emmc_bbu_flag = BBU_HANDLER_FLAG_DEFAULT;
}
imx8m_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox", sd_bbu_flag);
imx8m_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc2", emmc_bbu_flag);
phy_register_fixup_for_uid(PHY_ID_AR8031, AR_PHY_ID_MASK,
ar8031_phy_fixup);
return 0;
}
static const struct of_device_id imx8mn_evk_of_match[] = {
{ .compatible = "fsl,imx8mn-evk" },
{ .compatible = "fsl,imx8mn-ddr4-evk" },
{ /* sentinel */ },
};
BAREBOX_DEEP_PROBE_ENABLE(imx8mn_evk_of_match);
static struct driver_d imx8mn_evkboard_driver = {
.name = "board-imx8mn-evk",
.probe = imx8mn_evk_probe,
.of_compatible = DRV_OF_COMPAT(imx8mn_evk_of_match),
};
coredevice_platform_driver(imx8mn_evkboard_driver);
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