--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Texas Instruments K3 AM65 Ethernet Switch SubSystem Driver
+ *
+ * Copyright (C) 2019, Texas Instruments, Incorporated
+ *
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <clk.h>
+#include <dm.h>
+#include <dm/lists.h>
+#include <dma-uclass.h>
+#include <dm/of_access.h>
+#include <miiphy.h>
+#include <net.h>
+#include <phy.h>
+#include <power-domain.h>
+#include <linux/soc/ti/ti-udma.h>
+
+#include "cpsw_mdio.h"
+
+#define AM65_CPSW_CPSWNU_MAX_PORTS 2
+
+#define AM65_CPSW_SS_BASE 0x0
+#define AM65_CPSW_SGMII_BASE 0x100
+#define AM65_CPSW_MDIO_BASE 0xf00
+#define AM65_CPSW_XGMII_BASE 0x2100
+#define AM65_CPSW_CPSW_NU_BASE 0x20000
+#define AM65_CPSW_CPSW_NU_ALE_BASE 0x1e000
+
+#define AM65_CPSW_CPSW_NU_PORTS_OFFSET 0x1000
+#define AM65_CPSW_CPSW_NU_PORT_MACSL_OFFSET 0x330
+
+#define AM65_CPSW_MDIO_BUS_FREQ_DEF 1000000
+
+#define AM65_CPSW_CTL_REG 0x4
+#define AM65_CPSW_STAT_PORT_EN_REG 0x14
+#define AM65_CPSW_PTYPE_REG 0x18
+
+#define AM65_CPSW_CTL_REG_P0_ENABLE BIT(2)
+#define AM65_CPSW_CTL_REG_P0_TX_CRC_REMOVE BIT(13)
+#define AM65_CPSW_CTL_REG_P0_RX_PAD BIT(14)
+
+#define AM65_CPSW_P0_FLOW_ID_REG 0x8
+#define AM65_CPSW_PN_RX_MAXLEN_REG 0x24
+#define AM65_CPSW_PN_REG_SA_L 0x308
+#define AM65_CPSW_PN_REG_SA_H 0x30c
+
+#define AM65_CPSW_ALE_CTL_REG 0x8
+#define AM65_CPSW_ALE_CTL_REG_ENABLE BIT(31)
+#define AM65_CPSW_ALE_CTL_REG_RESET_TBL BIT(30)
+#define AM65_CPSW_ALE_CTL_REG_BYPASS BIT(4)
+#define AM65_CPSW_ALE_PN_CTL_REG(x) (0x40 + (x) * 4)
+#define AM65_CPSW_ALE_PN_CTL_REG_MODE_FORWARD 0x3
+#define AM65_CPSW_ALE_PN_CTL_REG_MAC_ONLY BIT(11)
+
+#define AM65_CPSW_MACSL_CTL_REG 0x0
+#define AM65_CPSW_MACSL_CTL_REG_IFCTL_A BIT(15)
+#define AM65_CPSW_MACSL_CTL_REG_GIG BIT(7)
+#define AM65_CPSW_MACSL_CTL_REG_GMII_EN BIT(5)
+#define AM65_CPSW_MACSL_CTL_REG_LOOPBACK BIT(1)
+#define AM65_CPSW_MACSL_CTL_REG_FULL_DUPLEX BIT(0)
+#define AM65_CPSW_MACSL_RESET_REG 0x8
+#define AM65_CPSW_MACSL_RESET_REG_RESET BIT(0)
+#define AM65_CPSW_MACSL_STATUS_REG 0x4
+#define AM65_CPSW_MACSL_RESET_REG_PN_IDLE BIT(31)
+#define AM65_CPSW_MACSL_RESET_REG_PN_E_IDLE BIT(30)
+#define AM65_CPSW_MACSL_RESET_REG_PN_P_IDLE BIT(29)
+#define AM65_CPSW_MACSL_RESET_REG_PN_TX_IDLE BIT(28)
+#define AM65_CPSW_MACSL_RESET_REG_IDLE_MASK \
+ (AM65_CPSW_MACSL_RESET_REG_PN_IDLE | \
+ AM65_CPSW_MACSL_RESET_REG_PN_E_IDLE | \
+ AM65_CPSW_MACSL_RESET_REG_PN_P_IDLE | \
+ AM65_CPSW_MACSL_RESET_REG_PN_TX_IDLE)
+
+#define AM65_CPSW_CPPI_PKT_TYPE 0x7
+
+struct am65_cpsw_port {
+ fdt_addr_t port_base;
+ fdt_addr_t macsl_base;
+ bool disabled;
+ u32 mac_control;
+};
+
+struct am65_cpsw_common {
+ struct udevice *dev;
+ fdt_addr_t ss_base;
+ fdt_addr_t cpsw_base;
+ fdt_addr_t mdio_base;
+ fdt_addr_t ale_base;
+ fdt_addr_t gmii_sel;
+ fdt_addr_t mac_efuse;
+
+ struct clk fclk;
+ struct power_domain pwrdmn;
+
+ u32 port_num;
+ struct am65_cpsw_port ports[AM65_CPSW_CPSWNU_MAX_PORTS];
+ u32 rflow_id_base;
+
+ struct mii_dev *bus;
+ u32 bus_freq;
+
+ struct dma dma_tx;
+ struct dma dma_rx;
+ u32 rx_next;
+ u32 rx_pend;
+ bool started;
+};
+
+struct am65_cpsw_priv {
+ struct udevice *dev;
+ struct am65_cpsw_common *cpsw_common;
+ u32 port_id;
+
+ struct phy_device *phydev;
+ bool has_phy;
+ ofnode phy_node;
+ u32 phy_addr;
+};
+
+#ifdef PKTSIZE_ALIGN
+#define UDMA_RX_BUF_SIZE PKTSIZE_ALIGN
+#else
+#define UDMA_RX_BUF_SIZE ALIGN(1522, ARCH_DMA_MINALIGN)
+#endif
+
+#ifdef PKTBUFSRX
+#define UDMA_RX_DESC_NUM PKTBUFSRX
+#else
+#define UDMA_RX_DESC_NUM 4
+#endif
+
+#define mac_hi(mac) (((mac)[0] << 0) | ((mac)[1] << 8) | \
+ ((mac)[2] << 16) | ((mac)[3] << 24))
+#define mac_lo(mac) (((mac)[4] << 0) | ((mac)[5] << 8))
+
+static void am65_cpsw_set_sl_mac(struct am65_cpsw_port *slave,
+ unsigned char *addr)
+{
+ writel(mac_hi(addr),
+ slave->port_base + AM65_CPSW_PN_REG_SA_H);
+ writel(mac_lo(addr),
+ slave->port_base + AM65_CPSW_PN_REG_SA_L);
+}
+
+int am65_cpsw_macsl_reset(struct am65_cpsw_port *slave)
+{
+ u32 i = 100;
+
+ /* Set the soft reset bit */
+ writel(AM65_CPSW_MACSL_RESET_REG_RESET,
+ slave->macsl_base + AM65_CPSW_MACSL_RESET_REG);
+
+ while ((readl(slave->macsl_base + AM65_CPSW_MACSL_RESET_REG) &
+ AM65_CPSW_MACSL_RESET_REG_RESET) && i--)
+ cpu_relax();
+
+ /* Timeout on the reset */
+ return i;
+}
+
+static int am65_cpsw_macsl_wait_for_idle(struct am65_cpsw_port *slave)
+{
+ u32 i = 100;
+
+ while ((readl(slave->macsl_base + AM65_CPSW_MACSL_STATUS_REG) &
+ AM65_CPSW_MACSL_RESET_REG_IDLE_MASK) && i--)
+ cpu_relax();
+
+ return i;
+}
+
+static int am65_cpsw_update_link(struct am65_cpsw_priv *priv)
+{
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ struct am65_cpsw_port *port = &common->ports[priv->port_id];
+ struct phy_device *phy = priv->phydev;
+ u32 mac_control = 0;
+
+ if (phy->link) { /* link up */
+ mac_control = /*AM65_CPSW_MACSL_CTL_REG_LOOPBACK |*/
+ AM65_CPSW_MACSL_CTL_REG_GMII_EN;
+ if (phy->speed == 1000)
+ mac_control |= AM65_CPSW_MACSL_CTL_REG_GIG;
+ if (phy->duplex == DUPLEX_FULL)
+ mac_control |= AM65_CPSW_MACSL_CTL_REG_FULL_DUPLEX;
+ if (phy->speed == 100)
+ mac_control |= AM65_CPSW_MACSL_CTL_REG_IFCTL_A;
+ }
+
+ if (mac_control == port->mac_control)
+ goto out;
+
+ if (mac_control) {
+ printf("link up on port %d, speed %d, %s duplex\n",
+ priv->port_id, phy->speed,
+ (phy->duplex == DUPLEX_FULL) ? "full" : "half");
+ } else {
+ printf("link down on port %d\n", priv->port_id);
+ }
+
+ writel(mac_control, port->macsl_base + AM65_CPSW_MACSL_CTL_REG);
+ port->mac_control = mac_control;
+
+out:
+ return phy->link;
+}
+
+#define AM65_GMII_SEL_MODE_MII 0
+#define AM65_GMII_SEL_MODE_RMII 1
+#define AM65_GMII_SEL_MODE_RGMII 2
+
+#define AM65_GMII_SEL_RGMII_IDMODE BIT(4)
+
+static void am65_cpsw_gmii_sel_k3(struct am65_cpsw_priv *priv,
+ phy_interface_t phy_mode, int slave)
+{
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ u32 reg;
+ u32 mode = 0;
+ bool rgmii_id = false;
+
+ reg = readl(common->gmii_sel);
+
+ dev_dbg(common->dev, "old gmii_sel: %08x\n", reg);
+
+ switch (phy_mode) {
+ case PHY_INTERFACE_MODE_RMII:
+ mode = AM65_GMII_SEL_MODE_RMII;
+ break;
+
+ case PHY_INTERFACE_MODE_RGMII:
+ mode = AM65_GMII_SEL_MODE_RGMII;
+ break;
+
+ case PHY_INTERFACE_MODE_RGMII_ID:
+ case PHY_INTERFACE_MODE_RGMII_RXID:
+ case PHY_INTERFACE_MODE_RGMII_TXID:
+ mode = AM65_GMII_SEL_MODE_RGMII;
+ rgmii_id = true;
+ break;
+
+ default:
+ dev_warn(common->dev,
+ "Unsupported PHY mode: %u. Defaulting to MII.\n",
+ phy_mode);
+ /* fallthrough */
+ case PHY_INTERFACE_MODE_MII:
+ mode = AM65_GMII_SEL_MODE_MII;
+ break;
+ };
+
+ if (rgmii_id)
+ mode |= AM65_GMII_SEL_RGMII_IDMODE;
+
+ reg = mode;
+ dev_dbg(common->dev, "gmii_sel PHY mode: %u, new gmii_sel: %08x\n",
+ phy_mode, reg);
+ writel(reg, common->gmii_sel);
+
+ reg = readl(common->gmii_sel);
+ if (reg != mode)
+ dev_err(common->dev,
+ "gmii_sel PHY mode NOT SET!: requested: %08x, gmii_sel: %08x\n",
+ mode, reg);
+}
+
+static int am65_cpsw_start(struct udevice *dev)
+{
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ struct am65_cpsw_port *port = &common->ports[priv->port_id];
+ struct am65_cpsw_port *port0 = &common->ports[0];
+ int ret, i;
+
+ ret = power_domain_on(&common->pwrdmn);
+ if (ret) {
+ dev_err(dev, "power_domain_on() failed %d\n", ret);
+ goto out;
+ }
+
+ ret = clk_enable(&common->fclk);
+ if (ret) {
+ dev_err(dev, "clk enabled failed %d\n", ret);
+ goto err_off_pwrdm;
+ }
+
+ common->rx_next = 0;
+ common->rx_pend = 0;
+ ret = dma_get_by_name(common->dev, "tx0", &common->dma_tx);
+ if (ret) {
+ dev_err(dev, "TX dma get failed %d\n", ret);
+ goto err_off_clk;
+ }
+ ret = dma_get_by_name(common->dev, "rx", &common->dma_rx);
+ if (ret) {
+ dev_err(dev, "RX dma get failed %d\n", ret);
+ goto err_free_tx;
+ }
+
+ for (i = 0; i < UDMA_RX_DESC_NUM; i++) {
+ ret = dma_prepare_rcv_buf(&common->dma_rx,
+ net_rx_packets[i],
+ UDMA_RX_BUF_SIZE);
+ if (ret) {
+ dev_err(dev, "RX dma add buf failed %d\n", ret);
+ goto err_free_tx;
+ }
+ }
+
+ ret = dma_enable(&common->dma_tx);
+ if (ret) {
+ dev_err(dev, "TX dma_enable failed %d\n", ret);
+ goto err_free_rx;
+ }
+ ret = dma_enable(&common->dma_rx);
+ if (ret) {
+ dev_err(dev, "RX dma_enable failed %d\n", ret);
+ goto err_dis_tx;
+ }
+
+ /* Control register */
+ writel(AM65_CPSW_CTL_REG_P0_ENABLE |
+ AM65_CPSW_CTL_REG_P0_TX_CRC_REMOVE |
+ AM65_CPSW_CTL_REG_P0_RX_PAD,
+ common->cpsw_base + AM65_CPSW_CTL_REG);
+
+ /* disable priority elevation */
+ writel(0, common->cpsw_base + AM65_CPSW_PTYPE_REG);
+
+ /* enable statistics */
+ writel(BIT(0) | BIT(priv->port_id),
+ common->cpsw_base + AM65_CPSW_STAT_PORT_EN_REG);
+
+ /* Port 0 length register */
+ writel(PKTSIZE_ALIGN, port0->port_base + AM65_CPSW_PN_RX_MAXLEN_REG);
+
+ /* set base flow_id */
+ writel(common->rflow_id_base,
+ port0->port_base + AM65_CPSW_P0_FLOW_ID_REG);
+
+ /* Reset and enable the ALE */
+ writel(AM65_CPSW_ALE_CTL_REG_ENABLE | AM65_CPSW_ALE_CTL_REG_RESET_TBL |
+ AM65_CPSW_ALE_CTL_REG_BYPASS,
+ common->ale_base + AM65_CPSW_ALE_CTL_REG);
+
+ /* port 0 put into forward mode */
+ writel(AM65_CPSW_ALE_PN_CTL_REG_MODE_FORWARD,
+ common->ale_base + AM65_CPSW_ALE_PN_CTL_REG(0));
+
+ /* PORT x configuration */
+
+ /* Port x Max length register */
+ writel(PKTSIZE_ALIGN, port->port_base + AM65_CPSW_PN_RX_MAXLEN_REG);
+
+ /* Port x set mac */
+ am65_cpsw_set_sl_mac(port, pdata->enetaddr);
+
+ /* Port x ALE: mac_only, Forwarding */
+ writel(AM65_CPSW_ALE_PN_CTL_REG_MAC_ONLY |
+ AM65_CPSW_ALE_PN_CTL_REG_MODE_FORWARD,
+ common->ale_base + AM65_CPSW_ALE_PN_CTL_REG(priv->port_id));
+
+ port->mac_control = 0;
+ if (!am65_cpsw_macsl_reset(port)) {
+ dev_err(dev, "mac_sl reset failed\n");
+ ret = -EFAULT;
+ goto err_dis_rx;
+ }
+
+ ret = phy_startup(priv->phydev);
+ if (ret) {
+ dev_err(dev, "phy_startup failed\n");
+ goto err_dis_rx;
+ }
+
+ ret = am65_cpsw_update_link(priv);
+ if (!ret) {
+ ret = -ENODEV;
+ goto err_phy_shutdown;
+ }
+
+ common->started = true;
+
+ return 0;
+
+err_phy_shutdown:
+ phy_shutdown(priv->phydev);
+err_dis_rx:
+ /* disable ports */
+ writel(0, common->ale_base + AM65_CPSW_ALE_PN_CTL_REG(priv->port_id));
+ writel(0, common->ale_base + AM65_CPSW_ALE_PN_CTL_REG(0));
+ if (!am65_cpsw_macsl_wait_for_idle(port))
+ dev_err(dev, "mac_sl idle timeout\n");
+ writel(0, port->macsl_base + AM65_CPSW_MACSL_CTL_REG);
+ writel(0, common->ale_base + AM65_CPSW_ALE_CTL_REG);
+ writel(0, common->cpsw_base + AM65_CPSW_CTL_REG);
+
+ dma_disable(&common->dma_rx);
+err_dis_tx:
+ dma_disable(&common->dma_tx);
+err_free_rx:
+ dma_free(&common->dma_rx);
+err_free_tx:
+ dma_free(&common->dma_tx);
+err_off_clk:
+ clk_disable(&common->fclk);
+err_off_pwrdm:
+ power_domain_off(&common->pwrdmn);
+out:
+ dev_err(dev, "%s end error\n", __func__);
+
+ return ret;
+}
+
+static int am65_cpsw_send(struct udevice *dev, void *packet, int length)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ struct ti_udma_drv_packet_data packet_data;
+ int ret;
+
+ packet_data.pkt_type = AM65_CPSW_CPPI_PKT_TYPE;
+ packet_data.dest_tag = priv->port_id;
+ ret = dma_send(&common->dma_tx, packet, length, &packet_data);
+ if (ret) {
+ dev_err(dev, "TX dma_send failed %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int am65_cpsw_recv(struct udevice *dev, int flags, uchar **packetp)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *common = priv->cpsw_common;
+
+ /* try to receive a new packet */
+ return dma_receive(&common->dma_rx, (void **)packetp, NULL);
+}
+
+static int am65_cpsw_free_pkt(struct udevice *dev, uchar *packet, int length)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ int ret;
+
+ if (length > 0) {
+ u32 pkt = common->rx_next % UDMA_RX_DESC_NUM;
+
+ ret = dma_prepare_rcv_buf(&common->dma_rx,
+ net_rx_packets[pkt],
+ UDMA_RX_BUF_SIZE);
+ if (ret)
+ dev_err(dev, "RX dma free_pkt failed %d\n", ret);
+ common->rx_next++;
+ }
+
+ return 0;
+}
+
+static void am65_cpsw_stop(struct udevice *dev)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ struct am65_cpsw_port *port = &common->ports[priv->port_id];
+
+ if (!common->started)
+ return;
+
+ phy_shutdown(priv->phydev);
+
+ writel(0, common->ale_base + AM65_CPSW_ALE_PN_CTL_REG(priv->port_id));
+ writel(0, common->ale_base + AM65_CPSW_ALE_PN_CTL_REG(0));
+ if (!am65_cpsw_macsl_wait_for_idle(port))
+ dev_err(dev, "mac_sl idle timeout\n");
+ writel(0, port->macsl_base + AM65_CPSW_MACSL_CTL_REG);
+ writel(0, common->ale_base + AM65_CPSW_ALE_CTL_REG);
+ writel(0, common->cpsw_base + AM65_CPSW_CTL_REG);
+
+ dma_disable(&common->dma_tx);
+ dma_free(&common->dma_tx);
+
+ dma_disable(&common->dma_rx);
+ dma_free(&common->dma_rx);
+
+ common->started = false;
+}
+
+static int am65_cpsw_read_rom_hwaddr(struct udevice *dev)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *common = priv->cpsw_common;
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ u32 mac_hi, mac_lo;
+
+ if (common->mac_efuse == FDT_ADDR_T_NONE)
+ return -1;
+
+ mac_lo = readl(common->mac_efuse);
+ mac_hi = readl(common->mac_efuse + 4);
+ pdata->enetaddr[0] = (mac_hi >> 8) & 0xff;
+ pdata->enetaddr[1] = mac_hi & 0xff;
+ pdata->enetaddr[2] = (mac_lo >> 24) & 0xff;
+ pdata->enetaddr[3] = (mac_lo >> 16) & 0xff;
+ pdata->enetaddr[4] = (mac_lo >> 8) & 0xff;
+ pdata->enetaddr[5] = mac_lo & 0xff;
+
+ return 0;
+}
+
+static const struct eth_ops am65_cpsw_ops = {
+ .start = am65_cpsw_start,
+ .send = am65_cpsw_send,
+ .recv = am65_cpsw_recv,
+ .free_pkt = am65_cpsw_free_pkt,
+ .stop = am65_cpsw_stop,
+ .read_rom_hwaddr = am65_cpsw_read_rom_hwaddr,
+};
+
+static int am65_cpsw_mdio_init(struct udevice *dev)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *cpsw_common = priv->cpsw_common;
+
+ if (!priv->has_phy || cpsw_common->bus)
+ return 0;
+
+ cpsw_common->bus = cpsw_mdio_init(dev->name,
+ cpsw_common->mdio_base,
+ cpsw_common->bus_freq,
+ clk_get_rate(&cpsw_common->fclk));
+ if (!cpsw_common->bus)
+ return -EFAULT;
+
+ return 0;
+}
+
+static int am65_cpsw_phy_init(struct udevice *dev)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct am65_cpsw_common *cpsw_common = priv->cpsw_common;
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct phy_device *phydev;
+ u32 supported = PHY_GBIT_FEATURES;
+ int ret;
+
+ phydev = phy_connect(cpsw_common->bus,
+ priv->phy_addr,
+ priv->dev,
+ pdata->phy_interface);
+
+ if (!phydev) {
+ dev_err(dev, "phy_connect() failed\n");
+ return -ENODEV;
+ }
+
+ phydev->supported &= supported;
+ if (pdata->max_speed) {
+ ret = phy_set_supported(phydev, pdata->max_speed);
+ if (ret)
+ return ret;
+ }
+ phydev->advertising = phydev->supported;
+
+ if (ofnode_valid(priv->phy_node))
+ phydev->node = priv->phy_node;
+
+ priv->phydev = phydev;
+ ret = phy_config(phydev);
+ if (ret < 0)
+ pr_err("phy_config() failed: %d", ret);
+
+ return ret;
+}
+
+static int am65_cpsw_ofdata_parse_phy(struct udevice *dev, ofnode port_np)
+{
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct ofnode_phandle_args out_args;
+ const char *phy_mode;
+ int ret = 0;
+
+ phy_mode = ofnode_read_string(port_np, "phy-mode");
+ if (phy_mode) {
+ pdata->phy_interface =
+ phy_get_interface_by_name(phy_mode);
+ if (pdata->phy_interface == -1) {
+ dev_err(dev, "Invalid PHY mode '%s', port %u\n",
+ phy_mode, priv->port_id);
+ ret = -EINVAL;
+ goto out;
+ }
+ }
+
+ ofnode_read_u32(port_np, "max-speed", (u32 *)&pdata->max_speed);
+ if (pdata->max_speed)
+ dev_err(dev, "Port %u speed froced to %uMbit\n",
+ priv->port_id, pdata->max_speed);
+
+ priv->has_phy = true;
+ ret = ofnode_parse_phandle_with_args(port_np, "phy-handle",
+ NULL, 0, 0, &out_args);
+ if (ret) {
+ dev_err(dev, "can't parse phy-handle port %u (%d)\n",
+ priv->port_id, ret);
+ priv->has_phy = false;
+ ret = 0;
+ }
+
+ priv->phy_node = out_args.node;
+ if (priv->has_phy) {
+ ret = ofnode_read_u32(priv->phy_node, "reg", &priv->phy_addr);
+ if (ret) {
+ dev_err(dev, "failed to get phy_addr port %u (%d)\n",
+ priv->port_id, ret);
+ goto out;
+ }
+ }
+
+out:
+ return ret;
+}
+
+static int am65_cpsw_probe_cpsw(struct udevice *dev)
+{
+ struct am65_cpsw_priv *priv = dev_get_priv(dev);
+ struct eth_pdata *pdata = dev_get_platdata(dev);
+ struct am65_cpsw_common *cpsw_common;
+ ofnode ports_np, node;
+ int ret, i;
+
+ priv->dev = dev;
+
+ cpsw_common = calloc(1, sizeof(*priv->cpsw_common));
+ if (!cpsw_common)
+ return -ENOMEM;
+ priv->cpsw_common = cpsw_common;
+
+ cpsw_common->dev = dev;
+ cpsw_common->ss_base = dev_read_addr(dev);
+ if (cpsw_common->ss_base == FDT_ADDR_T_NONE)
+ return -EINVAL;
+ cpsw_common->mac_efuse = devfdt_get_addr_name(dev, "mac_efuse");
+ /* no err check - optional */
+
+ ret = power_domain_get_by_index(dev, &cpsw_common->pwrdmn, 0);
+ if (ret) {
+ dev_err(dev, "failed to get pwrdmn: %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_get_by_name(dev, "fck", &cpsw_common->fclk);
+ if (ret) {
+ power_domain_free(&cpsw_common->pwrdmn);
+ dev_err(dev, "failed to get clock %d\n", ret);
+ return ret;
+ }
+
+ cpsw_common->cpsw_base = cpsw_common->ss_base + AM65_CPSW_CPSW_NU_BASE;
+ cpsw_common->ale_base = cpsw_common->cpsw_base +
+ AM65_CPSW_CPSW_NU_ALE_BASE;
+ cpsw_common->mdio_base = cpsw_common->ss_base + AM65_CPSW_MDIO_BASE;
+
+ cpsw_common->rflow_id_base = 0;
+ cpsw_common->rflow_id_base =
+ dev_read_u32_default(dev, "ti,rx-flow-id-base",
+ cpsw_common->rflow_id_base);
+
+ ports_np = dev_read_subnode(dev, "ports");
+ if (!ofnode_valid(ports_np)) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ofnode_for_each_subnode(node, ports_np) {
+ const char *node_name;
+ u32 port_id;
+ bool disabled;
+
+ node_name = ofnode_get_name(node);
+
+ disabled = !ofnode_is_available(node);
+
+ ret = ofnode_read_u32(node, "reg", &port_id);
+ if (ret) {
+ dev_err(dev, "%s: failed to get port_id (%d)\n",
+ node_name, ret);
+ goto out;
+ }
+
+ if (port_id >= AM65_CPSW_CPSWNU_MAX_PORTS) {
+ dev_err(dev, "%s: invalid port_id (%d)\n",
+ node_name, port_id);
+ ret = -EINVAL;
+ goto out;
+ }
+ cpsw_common->port_num++;
+
+ if (!port_id)
+ continue;
+
+ priv->port_id = port_id;
+ cpsw_common->ports[port_id].disabled = disabled;
+ if (disabled)
+ continue;
+
+ ret = am65_cpsw_ofdata_parse_phy(dev, node);
+ if (ret)
+ goto out;
+ }
+
+ for (i = 0; i < AM65_CPSW_CPSWNU_MAX_PORTS; i++) {
+ struct am65_cpsw_port *port = &cpsw_common->ports[i];
+
+ port->port_base = cpsw_common->cpsw_base +
+ AM65_CPSW_CPSW_NU_PORTS_OFFSET +
+ (i * AM65_CPSW_CPSW_NU_PORTS_OFFSET);
+ port->macsl_base = port->port_base +
+ AM65_CPSW_CPSW_NU_PORT_MACSL_OFFSET;
+ }
+
+ node = dev_read_subnode(dev, "cpsw-phy-sel");
+ if (!ofnode_valid(node)) {
+ dev_err(dev, "can't find cpsw-phy-sel\n");
+ ret = -ENOENT;
+ goto out;
+ }
+
+ cpsw_common->gmii_sel = ofnode_get_addr(node);
+ if (cpsw_common->gmii_sel == FDT_ADDR_T_NONE) {
+ dev_err(dev, "failed to get gmii_sel base\n");
+ goto out;
+ }
+
+ node = dev_read_subnode(dev, "mdio");
+ if (!ofnode_valid(node)) {
+ dev_err(dev, "can't find mdio\n");
+ ret = -ENOENT;
+ goto out;
+ }
+
+ cpsw_common->bus_freq =
+ dev_read_u32_default(dev, "bus_freq",
+ AM65_CPSW_MDIO_BUS_FREQ_DEF);
+
+ am65_cpsw_gmii_sel_k3(priv, pdata->phy_interface, priv->port_id);
+
+ ret = am65_cpsw_mdio_init(dev);
+ if (ret)
+ goto out;
+
+ ret = am65_cpsw_phy_init(dev);
+ if (ret)
+ goto out;
+
+ dev_info(dev, "K3 CPSW: nuss_ver: 0x%08X cpsw_ver: 0x%08X ale_ver: 0x%08X Ports:%u rflow_id_base:%u mdio_freq:%u\n",
+ readl(cpsw_common->ss_base),
+ readl(cpsw_common->cpsw_base),
+ readl(cpsw_common->ale_base),
+ cpsw_common->port_num,
+ cpsw_common->rflow_id_base,
+ cpsw_common->bus_freq);
+
+out:
+ clk_free(&cpsw_common->fclk);
+ power_domain_free(&cpsw_common->pwrdmn);
+ return ret;
+}
+
+static const struct udevice_id am65_cpsw_nuss_ids[] = {
+ { .compatible = "ti,am654-cpsw-nuss" },
+ { }
+};
+
+U_BOOT_DRIVER(am65_cpsw_nuss_slave) = {
+ .name = "am65_cpsw_nuss_slave",
+ .id = UCLASS_ETH,
+ .of_match = am65_cpsw_nuss_ids,
+ .probe = am65_cpsw_probe_cpsw,
+ .ops = &am65_cpsw_ops,
+ .priv_auto_alloc_size = sizeof(struct am65_cpsw_priv),
+ .platdata_auto_alloc_size = sizeof(struct eth_pdata),
+ .flags = DM_FLAG_ALLOC_PRIV_DMA,
+};
projects / oweals / u-boot.git / commitdiff