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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2020 Toradex
*/
#include <common.h>
#include <init.h>
#include <asm/arch/clock.h>
#include <asm/arch/sys_proto.h>
#include <asm/io.h>
#include <i2c.h>
#include <miiphy.h>
#include <netdev.h>
#include <micrel.h>
#include "../common/tdx-cfg-block.h"
DECLARE_GLOBAL_DATA_PTR;
#define I2C_PMIC 0
enum pcb_rev_t {
PCB_VERSION_1_0,
PCB_VERSION_1_1
};
#if IS_ENABLED(CONFIG_FEC_MXC)
static int setup_fec(void)
{
struct iomuxc_gpr_base_regs *gpr =
(struct iomuxc_gpr_base_regs *)IOMUXC_GPR_BASE_ADDR;
/* Use 125M anatop REF_CLK1 for ENET1, not from external */
clrsetbits_le32(&gpr->gpr[1], 0x2000, 0);
return 0;
}
int board_phy_config(struct phy_device *phydev)
{
int tmp;
switch (ksz9xx1_phy_get_id(phydev) & MII_KSZ9x31_SILICON_REV_MASK) {
case PHY_ID_KSZ9031:
/*
* The PHY adds 1.2ns for the RXC and 0ns for TXC clock by
* default. The MAC and the layout don't add a skew between
* clock and data.
* Add 0.3ns for the RXC path and 0.96 + 0.42 ns (1.38 ns) for
* the TXC path to get the required clock skews.
*/
/* control data pad skew - devaddr = 0x02, register = 0x04 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_CTRL_SIG_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x0070);
/* rx data pad skew - devaddr = 0x02, register = 0x05 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_RX_DATA_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x7777);
/* tx data pad skew - devaddr = 0x02, register = 0x06 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_TX_DATA_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x0000);
/* gtx and rx clock pad skew - devaddr = 0x02,register = 0x08 */
ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9031_EXT_RGMII_CLOCK_SKEW,
MII_KSZ9031_MOD_DATA_NO_POST_INC,
0x03f4);
break;
case PHY_ID_KSZ9131:
default:
/* read rxc dll control - devaddr = 0x2, register = 0x4c */
tmp = ksz9031_phy_extended_read(phydev, 0x02,
MII_KSZ9131_EXT_RGMII_2NS_SKEW_RXDLL,
MII_KSZ9031_MOD_DATA_NO_POST_INC);
/* disable rxdll bypass (enable 2ns skew delay on RXC) */
tmp &= ~MII_KSZ9131_RXTXDLL_BYPASS;
/* rxc data pad skew 2ns - devaddr = 0x02, register = 0x4c */
tmp = ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9131_EXT_RGMII_2NS_SKEW_RXDLL,
MII_KSZ9031_MOD_DATA_NO_POST_INC, tmp);
/* read txc dll control - devaddr = 0x02, register = 0x4d */
tmp = ksz9031_phy_extended_read(phydev, 0x02,
MII_KSZ9131_EXT_RGMII_2NS_SKEW_TXDLL,
MII_KSZ9031_MOD_DATA_NO_POST_INC);
/* disable txdll bypass (enable 2ns skew delay on TXC) */
tmp &= ~MII_KSZ9131_RXTXDLL_BYPASS;
/* rxc data pad skew 2ns - devaddr = 0x02, register = 0x4d */
tmp = ksz9031_phy_extended_write(phydev, 0x02,
MII_KSZ9131_EXT_RGMII_2NS_SKEW_TXDLL,
MII_KSZ9031_MOD_DATA_NO_POST_INC, tmp);
break;
}
if (phydev->drv->config)
phydev->drv->config(phydev);
return 0;
}
#endif
int board_init(void)
{
if (IS_ENABLED(CONFIG_FEC_MXC))
setup_fec();
return 0;
}
int board_mmc_get_env_dev(int devno)
{
return devno;
}
static enum pcb_rev_t get_pcb_revision(void)
{
struct udevice *bus;
struct udevice *i2c_dev = NULL;
int ret;
u8 is_bd71837 = 0;
ret = uclass_get_device_by_seq(UCLASS_I2C, I2C_PMIC, &bus);
if (!ret)
ret = dm_i2c_probe(bus, 0x4b, 0, &i2c_dev);
if (!ret)
ret = dm_i2c_read(i2c_dev, 0x0, &is_bd71837, 1);
/* BD71837_REV, High Nibble is major version, fix 1010 */
is_bd71837 = !ret && ((is_bd71837 & 0xf0) == 0xa0);
return is_bd71837 ? PCB_VERSION_1_0 : PCB_VERSION_1_1;
}
static void select_dt_from_module_version(void)
{
char variant[32];
char *env_variant = env_get("variant");
int is_wifi = 0;
if (IS_ENABLED(CONFIG_TDX_CFG_BLOCK)) {
/*
* If we have a valid config block and it says we are a
* module with Wi-Fi/Bluetooth make sure we use the -wifi
* device tree.
*/
is_wifi = (tdx_hw_tag.prodid == VERDIN_IMX8MMQ_WIFI_BT_IT) ||
(tdx_hw_tag.prodid == VERDIN_IMX8MMDL_WIFI_BT_IT);
}
switch (get_pcb_revision()) {
case PCB_VERSION_1_0:
printf("Detected a V1.0 module\n");
if (is_wifi)
strncpy(&variant[0], "wifi", sizeof(variant));
else
strncpy(&variant[0], "nonwifi", sizeof(variant));
break;
default:
if (is_wifi)
strncpy(&variant[0], "wifi-v1.1", sizeof(variant));
else
strncpy(&variant[0], "nonwifi-v1.1", sizeof(variant));
break;
}
if (strcmp(variant, env_variant)) {
printf("Setting variant to %s\n", variant);
env_set("variant", variant);
if (IS_ENABLED(CONFIG_ENV_IS_NOWHERE))
env_save();
}
}
int board_late_init(void)
{
select_dt_from_module_version();
return 0;
}
#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
int ft_board_setup(void *blob, struct bd_info *bd)
{
return 0;
}
#endif
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