--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * TI PHY drivers
+ *
+ */
+
+#include <common.h>
+#include <phy.h>
+#include <linux/compat.h>
+#include <malloc.h>
+
+#include <dm.h>
+#include <dt-bindings/net/ti-dp83869.h>
+
+/* TI DP83869 */
+#define DP83869_DEVADDR 0x1f
+
+#define MII_DP83869_PHYCTRL 0x10
+#define MII_DP83869_MICR 0x12
+#define MII_DP83869_CFG2 0x14
+#define MII_DP83869_BISCR 0x16
+#define DP83869_CTRL 0x1f
+#define DP83869_CFG4 0x1e
+
+/* Extended Registers */
+#define DP83869_GEN_CFG3 0x0031
+#define DP83869_RGMIICTL 0x0032
+#define DP83869_STRAP_STS1 0x006E
+#define DP83869_RGMIIDCTL 0x0086
+#define DP83869_IO_MUX_CFG 0x0170
+#define DP83869_OP_MODE 0x01df
+#define DP83869_FX_CTRL 0x0c00
+
+#define DP83869_SW_RESET BIT(15)
+#define DP83869_SW_RESTART BIT(14)
+
+/* MICR Interrupt bits */
+#define MII_DP83869_MICR_AN_ERR_INT_EN BIT(15)
+#define MII_DP83869_MICR_SPEED_CHNG_INT_EN BIT(14)
+#define MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN BIT(13)
+#define MII_DP83869_MICR_PAGE_RXD_INT_EN BIT(12)
+#define MII_DP83869_MICR_AUTONEG_COMP_INT_EN BIT(11)
+#define MII_DP83869_MICR_LINK_STS_CHNG_INT_EN BIT(10)
+#define MII_DP83869_MICR_FALSE_CARRIER_INT_EN BIT(8)
+#define MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN BIT(4)
+#define MII_DP83869_MICR_WOL_INT_EN BIT(3)
+#define MII_DP83869_MICR_XGMII_ERR_INT_EN BIT(2)
+#define MII_DP83869_MICR_POL_CHNG_INT_EN BIT(1)
+#define MII_DP83869_MICR_JABBER_INT_EN BIT(0)
+
+#define MII_DP83869_BMCR_DEFAULT (BMCR_ANENABLE | \
+ BMCR_FULLDPLX | \
+ BMCR_SPEED1000)
+
+/* This is the same bit mask as the BMCR so re-use the BMCR default */
+#define DP83869_FX_CTRL_DEFAULT MII_DP83869_BMCR_DEFAULT
+
+/* CFG1 bits */
+#define DP83869_CFG1_DEFAULT (ADVERTISE_1000HALF | \
+ ADVERTISE_1000FULL | \
+ CTL1000_AS_MASTER)
+
+/* RGMIICTL bits */
+#define DP83869_RGMII_TX_CLK_DELAY_EN BIT(1)
+#define DP83869_RGMII_RX_CLK_DELAY_EN BIT(0)
+
+/* STRAP_STS1 bits */
+#define DP83869_STRAP_OP_MODE_MASK GENMASK(2, 0)
+#define DP83869_STRAP_STS1_RESERVED BIT(11)
+#define DP83869_STRAP_MIRROR_ENABLED BIT(12)
+
+/* PHY CTRL bits */
+#define DP83869_PHYCR_RX_FIFO_DEPTH_SHIFT 12
+#define DP83869_PHYCR_RX_FIFO_DEPTH_MASK GENMASK(13, 12)
+#define DP83869_PHYCR_TX_FIFO_DEPTH_SHIFT 14
+#define DP83869_PHYCR_TX_FIFO_DEPTH_MASK GENMASK(15, 14)
+#define DP83869_PHYCR_RESERVED_MASK BIT(11)
+#define DP83869_PHYCR_MDI_CROSSOVER_SHIFT 5
+#define DP83869_PHYCR_MDI_CROSSOVER_MDIX 2
+#define DP83869_PHY_CTRL_DEFAULT 0x48
+
+/* RGMIIDCTL bits */
+#define DP83869_RGMII_TX_CLK_DELAY_SHIFT 4
+#define DP83869_CLK_DELAY_DEF 7
+
+/* CFG2 bits */
+#define MII_DP83869_CFG2_SPEEDOPT_10EN 0x0040
+#define MII_DP83869_CFG2_SGMII_AUTONEGEN 0x0080
+#define MII_DP83869_CFG2_SPEEDOPT_ENH 0x0100
+#define MII_DP83869_CFG2_SPEEDOPT_CNT 0x0800
+#define MII_DP83869_CFG2_SPEEDOPT_INTLOW 0x2000
+#define MII_DP83869_CFG2_MASK 0x003F
+
+/* User setting - can be taken from DTS */
+#define DEFAULT_FIFO_DEPTH DP83869_PHYCR_FIFO_DEPTH_4_B_NIB
+
+/* IO_MUX_CFG bits */
+#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL 0x1f
+
+#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX 0x0
+#define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN 0x1f
+#define DP83869_IO_MUX_CFG_CLK_O_DISABLE BIT(6)
+#define DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT 8
+#define DP83869_IO_MUX_CFG_CLK_O_SEL_MASK \
+ GENMASK(0x1f, DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT)
+
+/* CFG3 bits */
+#define DP83869_CFG3_PORT_MIRROR_EN BIT(0)
+
+/* OP MODE bits */
+#define DP83869_OP_MODE_MII BIT(5)
+#define DP83869_SGMII_RGMII_BRIDGE BIT(6)
+
+enum {
+ DP83869_PORT_MIRRORING_KEEP,
+ DP83869_PORT_MIRRORING_EN,
+ DP83869_PORT_MIRRORING_DIS,
+};
+
+struct dp83869_private {
+ int tx_fifo_depth;
+ int rx_fifo_depth;
+ s32 rx_int_delay;
+ s32 tx_int_delay;
+ int io_impedance;
+ int port_mirroring;
+ bool set_clk_output;
+ int clk_output_sel;
+ int mode;
+};
+
+static int dp83869_readext(struct phy_device *phydev, int addr, int devad, int reg)
+{
+ return phy_read_mmd(phydev, devad, reg);
+}
+
+static int dp83869_writeext(struct phy_device *phydev, int addr, int devad, int reg, u16 val)
+{
+ return phy_write_mmd(phydev, devad, reg, val);
+}
+
+static int dp83869_config_port_mirroring(struct phy_device *phydev)
+{
+ struct dp83869_private *dp83869 =
+ (struct dp83869_private *)phydev->priv;
+ u16 val;
+
+ val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_CFG4);
+
+ if (dp83869->port_mirroring == DP83869_PORT_MIRRORING_EN)
+ val |= DP83869_CFG3_PORT_MIRROR_EN;
+ else
+ val &= ~DP83869_CFG3_PORT_MIRROR_EN;
+
+ phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_CFG4, val);
+
+ return 0;
+}
+
+#ifdef CONFIG_DM_ETH
+static const int dp83869_internal_delay[] = {250, 500, 750, 1000, 1250, 1500,
+ 1750, 2000, 2250, 2500, 2750, 3000,
+ 3250, 3500, 3750, 4000};
+
+static int dp83869_set_strapped_mode(struct phy_device *phydev)
+{
+ struct dp83869_private *dp83869 = phydev->priv;
+ int val;
+
+ val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1);
+ if (val < 0)
+ return val;
+
+ dp83869->mode = val & DP83869_STRAP_OP_MODE_MASK;
+
+ return 0;
+}
+
+/**
+ * dp83869_data_init - Convenience function for setting PHY specific data
+ *
+ * @phydev: the phy_device struct
+ */
+static int dp83869_of_init(struct phy_device *phydev)
+{
+ struct dp83869_private * const dp83869 = phydev->priv;
+ const int delay_entries = ARRAY_SIZE(dp83869_internal_delay);
+ int ret;
+ ofnode node;
+
+ node = phy_get_ofnode(phydev);
+ if (!ofnode_valid(node))
+ return -EINVAL;
+
+ dp83869->io_impedance = -EINVAL;
+
+ /* Optional configuration, set to default if required */
+ dp83869->clk_output_sel = ofnode_read_u32_default(node, "ti,clk-output-sel",
+ DP83869_CLK_O_SEL_CHN_A_RCLK);
+
+ if (dp83869->clk_output_sel > DP83869_CLK_O_SEL_REF_CLK &&
+ dp83869->clk_output_sel != DP83869_CLK_O_SEL_OFF)
+ dp83869->clk_output_sel = DP83869_CLK_O_SEL_REF_CLK;
+
+ /* If operation mode is not set use setting from straps */
+ ret = ofnode_read_s32(node, "ti,op-mode", &dp83869->mode);
+ if (ret == 0) {
+ if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET ||
+ dp83869->mode > DP83869_SGMII_COPPER_ETHERNET)
+ return -EINVAL;
+ } else {
+ ret = dp83869_set_strapped_mode(phydev);
+ if (ret)
+ return ret;
+ }
+
+ if (ofnode_read_bool(node, "ti,max-output-impedance"))
+ dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX;
+ else if (ofnode_read_bool(node, "ti,min-output-impedance"))
+ dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN;
+
+ if (ofnode_read_bool(node, "enet-phy-lane-swap")) {
+ dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN;
+ } else {
+ ret = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1);
+
+ if (ret < 0)
+ return ret;
+
+ if (ret & DP83869_STRAP_MIRROR_ENABLED)
+ dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN;
+ else
+ dp83869->port_mirroring = DP83869_PORT_MIRRORING_DIS;
+ }
+
+ dp83869->rx_fifo_depth = ofnode_read_s32_default(node, "rx-fifo-depth",
+ DP83869_PHYCR_FIFO_DEPTH_4_B_NIB);
+
+ dp83869->tx_fifo_depth = ofnode_read_s32_default(node, "tx-fifo-depth",
+ DP83869_PHYCR_FIFO_DEPTH_4_B_NIB);
+
+ /* RX delay *must* be specified if internal delay of RX is used. */
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) {
+ dp83869->rx_int_delay = ofnode_read_u32_default(node, "rx-internal-delay-ps",
+ DP83869_CLK_DELAY_DEF);
+ if (dp83869->rx_int_delay > delay_entries) {
+ dp83869->rx_int_delay = DP83869_CLK_DELAY_DEF;
+ pr_debug("rx-internal-delay-ps not set/invalid, default to %ups\n",
+ dp83869_internal_delay[dp83869->rx_int_delay]);
+ }
+
+ dp83869->rx_int_delay = dp83869_internal_delay[dp83869->rx_int_delay];
+ }
+
+ /* TX delay *must* be specified if internal delay of RX is used. */
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) {
+ dp83869->tx_int_delay = ofnode_read_u32_default(node, "tx-internal-delay-ps",
+ DP83869_CLK_DELAY_DEF);
+ if (dp83869->tx_int_delay > delay_entries) {
+ dp83869->tx_int_delay = DP83869_CLK_DELAY_DEF;
+ pr_debug("tx-internal-delay-ps not set/invalid, default to %ups\n",
+ dp83869_internal_delay[dp83869->tx_int_delay]);
+ }
+
+ dp83869->tx_int_delay = dp83869_internal_delay[dp83869->tx_int_delay];
+ }
+
+ return 0;
+}
+#else
+static int dp83869_of_init(struct phy_device *phydev)
+{
+ struct dp83869_private *dp83869 = phydev->priv;
+
+ dp83869->rx_int_delay = DP83869_RGMIIDCTL_2_25_NS;
+ dp83869->tx_int_delay = DP83869_RGMIIDCTL_2_75_NS;
+ dp83869->fifo_depth = DEFAULT_FIFO_DEPTH;
+ dp83869->io_impedance = -EINVAL;
+
+ return 0;
+}
+#endif /* CONFIG_OF_MDIO */
+
+static int dp83869_configure_rgmii(struct phy_device *phydev,
+ struct dp83869_private *dp83869)
+{
+ int ret = 0, val;
+
+ if (phy_interface_is_rgmii(phydev)) {
+ val = phy_read(phydev, MDIO_DEVAD_NONE, MII_DP83869_PHYCTRL);
+ if (val < 0)
+ return val;
+
+ val &= ~(DP83869_PHYCR_TX_FIFO_DEPTH_MASK | DP83869_PHYCR_RX_FIFO_DEPTH_MASK);
+ val |= (dp83869->tx_fifo_depth << DP83869_PHYCR_TX_FIFO_DEPTH_SHIFT);
+ val |= (dp83869->rx_fifo_depth << DP83869_PHYCR_RX_FIFO_DEPTH_SHIFT);
+
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83869_PHYCTRL, val);
+ if (ret)
+ return ret;
+ }
+
+ if (dp83869->io_impedance >= 0) {
+ val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG);
+
+ val &= ~DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL;
+ val |= dp83869->io_impedance & DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG, val);
+
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
+static int dp83869_configure_mode(struct phy_device *phydev,
+ struct dp83869_private *dp83869)
+{
+ int phy_ctrl_val;
+ int ret, val;
+
+ if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET ||
+ dp83869->mode > DP83869_SGMII_COPPER_ETHERNET)
+ return -EINVAL;
+
+ /* Below init sequence for each operational mode is defined in
+ * section 9.4.8 of the datasheet.
+ */
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE,
+ dp83869->mode);
+ if (ret)
+ return ret;
+
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, MII_DP83869_BMCR_DEFAULT);
+ if (ret)
+ return ret;
+
+ phy_ctrl_val = (dp83869->rx_fifo_depth << DP83869_PHYCR_RX_FIFO_DEPTH_SHIFT |
+ dp83869->tx_fifo_depth << DP83869_PHYCR_TX_FIFO_DEPTH_SHIFT |
+ DP83869_PHY_CTRL_DEFAULT);
+
+ switch (dp83869->mode) {
+ case DP83869_RGMII_COPPER_ETHERNET:
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83869_PHYCTRL,
+ phy_ctrl_val);
+ if (ret)
+ return ret;
+
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, DP83869_CFG1_DEFAULT);
+ if (ret)
+ return ret;
+
+ ret = dp83869_configure_rgmii(phydev, dp83869);
+ if (ret)
+ return ret;
+ break;
+ case DP83869_RGMII_SGMII_BRIDGE:
+ val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE);
+
+ val |= DP83869_SGMII_RGMII_BRIDGE;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE, val);
+
+ if (ret)
+ return ret;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR,
+ DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT);
+ if (ret)
+ return ret;
+
+ break;
+ case DP83869_1000M_MEDIA_CONVERT:
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83869_PHYCTRL,
+ phy_ctrl_val);
+ if (ret)
+ return ret;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR,
+ DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT);
+ if (ret)
+ return ret;
+ break;
+ case DP83869_100M_MEDIA_CONVERT:
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83869_PHYCTRL,
+ phy_ctrl_val);
+ if (ret)
+ return ret;
+ break;
+ case DP83869_SGMII_COPPER_ETHERNET:
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83869_PHYCTRL,
+ phy_ctrl_val);
+ if (ret)
+ return ret;
+
+ ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_CTRL1000, DP83869_CFG1_DEFAULT);
+ if (ret)
+ return ret;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR,
+ DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT);
+ if (ret)
+ return ret;
+
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret;
+}
+
+static int dp83869_config(struct phy_device *phydev)
+{
+ struct dp83869_private *dp83869;
+ unsigned int val;
+ int ret;
+
+ dp83869 = (struct dp83869_private *)phydev->priv;
+
+ ret = dp83869_of_init(phydev);
+ if (ret)
+ return ret;
+
+ ret = dp83869_configure_mode(phydev, dp83869);
+ if (ret)
+ return ret;
+
+ if (dp83869->port_mirroring != DP83869_PORT_MIRRORING_KEEP)
+ dp83869_config_port_mirroring(phydev);
+
+ /* Clock output selection if muxing property is set */
+ if (dp83869->clk_output_sel != DP83869_CLK_O_SEL_REF_CLK) {
+ val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG);
+
+ val &= ~DP83869_IO_MUX_CFG_CLK_O_SEL_MASK;
+ val |= dp83869->clk_output_sel << DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG, val);
+
+ if (ret)
+ return ret;
+ }
+
+ if (phy_interface_is_rgmii(phydev)) {
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIIDCTL,
+ dp83869->rx_int_delay |
+ dp83869->tx_int_delay << DP83869_RGMII_TX_CLK_DELAY_SHIFT);
+ if (ret)
+ return ret;
+
+ val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIICTL);
+ val |= (DP83869_RGMII_TX_CLK_DELAY_EN |
+ DP83869_RGMII_RX_CLK_DELAY_EN);
+
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID)
+ val &= ~(DP83869_RGMII_TX_CLK_DELAY_EN |
+ DP83869_RGMII_RX_CLK_DELAY_EN);
+
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
+ val &= ~DP83869_RGMII_TX_CLK_DELAY_EN;
+
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID)
+ val &= ~DP83869_RGMII_RX_CLK_DELAY_EN;
+
+ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIICTL,
+ val);
+ }
+
+ genphy_config_aneg(phydev);
+ return 0;
+}
+
+static int dp83869_probe(struct phy_device *phydev)
+{
+ struct dp83869_private *dp83869;
+
+ dp83869 = kzalloc(sizeof(*dp83869), GFP_KERNEL);
+ if (!dp83869)
+ return -ENOMEM;
+
+ phydev->priv = dp83869;
+ return 0;
+}
+
+static struct phy_driver DP83869_driver = {
+ .name = "TI DP83869",
+ .uid = 0x2000a0f1,
+ .mask = 0xfffffff0,
+ .features = PHY_GBIT_FEATURES,
+ .probe = dp83869_probe,
+ .config = &dp83869_config,
+ .startup = &genphy_startup,
+ .shutdown = &genphy_shutdown,
+ .readext = dp83869_readext,
+ .writeext = dp83869_writeext
+};
+
+int phy_dp83869_init(void)
+{
+ phy_register(&DP83869_driver);
+ return 0;
+}
projects / u-boot.git / commitdiff
