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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;
- }
- int board_phys_sdram_size(phys_size_t *size)
- {
- if (!size)
- return -EINVAL;
- *size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
- 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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