| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <device/mdio.h> |
| #include <device/pci.h> |
| #include "chip.h" |
| #include "m88e1512.h" |
| |
| static void switch_page(struct device *dev, uint8_t page) |
| { |
| mdio_write(dev, PAGE_REG, page); |
| } |
| |
| static void m88e1512_init(struct device *dev) |
| { |
| struct drivers_net_phy_m88e1512_config *config = dev->chip_info; |
| uint16_t reg; |
| |
| /* Enable downshift. */ |
| if (config->downshift_cnt) { |
| if (config->downshift_cnt > DOWNSHIFT_CNT_MAX) { |
| printk(BIOS_INFO, "%s: Downshift counter for %s is too large.\n", |
| dev_path(dev->bus->dev), dev->chip_ops->name); |
| } else { |
| printk(BIOS_DEBUG, "%s: Enable downshift after %d attempts for %s.\n", |
| dev_path(dev->bus->dev), config->downshift_cnt, |
| dev->chip_ops->name); |
| |
| reg = mdio_read(dev, COPPER_SPEC_CTRL_REG_1); |
| clrsetbits16(®, DOWNSHIFT_CNT_MASK, |
| DOWNSHIFT_CNT(config->downshift_cnt) | DOWNSHIFT_EN); |
| mdio_write(dev, COPPER_SPEC_CTRL_REG_1, reg); |
| |
| /* Downshift enable requires a software reset to take effect. */ |
| reg = mdio_read(dev, COPPER_CTRL_REG); |
| setbits16(®, SOFTWARE_RESET); |
| mdio_write(dev, COPPER_CTRL_REG, reg); |
| } |
| } |
| |
| /* Configure LEDs if requested. */ |
| if (config->configure_leds) { |
| printk(BIOS_DEBUG, "%s: Set a customized LED mode for %s.\n", |
| dev_path(dev->bus->dev), dev->chip_ops->name); |
| |
| /* Select page 3 to access LED function control register. */ |
| switch_page(dev, 3); |
| |
| /* Modify PHY LED mode. */ |
| reg = mdio_read(dev, LED_FUNC_CTRL_REG); |
| clrsetbits16(®, LED_FUNC_CTRL_MASK, config->led_0_ctrl | |
| (config->led_1_ctrl << 4) | (config->led_2_ctrl << 8)); |
| mdio_write(dev, LED_FUNC_CTRL_REG, reg); |
| } |
| |
| /* INTn can be routed to LED[2] pin. */ |
| if (config->enable_int) { |
| printk(BIOS_DEBUG, "%s: INTn is routed to LED[2] pin %s.\n", |
| dev_path(dev->bus->dev), dev->chip_ops->name); |
| |
| /* Select page 3 to access LED function control register. */ |
| switch_page(dev, 3); |
| |
| reg = mdio_read(dev, LED_TIMER_CTRL_REG); |
| setbits16(®, LED_IRQ_ENABLE); |
| mdio_write(dev, LED_TIMER_CTRL_REG, reg); |
| } |
| |
| /* Set RGMII output impedance manually. */ |
| if (config->force_mos) { |
| printk(BIOS_DEBUG, "%s: Set RGMII driver strength manually for %s.\n", |
| dev_path(dev->bus->dev), dev->chip_ops->name); |
| |
| /* Select page 2 to access RGMII output impedance calibration override |
| register. */ |
| switch_page(dev, 2); |
| |
| reg = mdio_read(dev, OUT_IMP_CAL_OVERRIDE_REG); |
| /* Set first only NMOS/PMOS values. */ |
| clrsetbits16(®, MOS_VALUE_MASK, PMOS_VALUE(config->pmos_val) | |
| NMOS_VALUE(config->nmos_val)); |
| mdio_write(dev, OUT_IMP_CAL_OVERRIDE_REG, reg); |
| /* Activate the new setting. */ |
| setbits16(®, FORCE_MOS); |
| mdio_write(dev, OUT_IMP_CAL_OVERRIDE_REG, reg); |
| } |
| |
| /* Switch back to page 0. */ |
| switch_page(dev, 0); |
| } |
| |
| struct device_operations m88e1512_ops = { |
| .read_resources = noop_read_resources, |
| .set_resources = noop_set_resources, |
| .init = m88e1512_init, |
| }; |
| |
| struct chip_operations drivers_net_phy_m88e1512_ops = { |
| CHIP_NAME("88E1512") |
| }; |