+// SPDX-License-Identifier: GPL-2.0+
/*
* LPC32xx Ethernet MAC interface driver
*
* (C) Copyright 2014 DENX Software Engineering GmbH
* Written-by: Albert ARIBAUD - 3ADEV <albert.aribaud@3adev.fr>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <malloc.h>
#include <miiphy.h>
#include <asm/io.h>
-#include <asm/errno.h>
+#include <linux/errno.h>
#include <asm/types.h>
#include <asm/system.h>
#include <asm/byteorder.h>
#define SUPP_SPEED 0x00000100
/* MCFG register bitfields/masks and offsets (see Table 292) */
-#define MCFG_CLOCK_SELECT_MASK 0x0000001C
+#define MCFG_RESET_MII_MGMT 0x00008000
/* divide clock by 28 (see Table 293) */
#define MCFG_CLOCK_SELECT_DIV28 0x0000001C
#define COMMAND_RXENABLE 0x00000001
#define COMMAND_TXENABLE 0x00000002
#define COMMAND_PASSRUNTFRAME 0x00000040
+#define COMMAND_RMII 0x00000200
#define COMMAND_FULL_DUPLEX 0x00000400
/* Helper: general reset */
-#define COMMAND_RESETS 0x0000001C
+#define COMMAND_RESETS 0x00000038
/* STATUS register bitfields/masks and offsets (see Table 283) */
#define STATUS_RXSTATUS 0x00000001
struct eth_device dev;
struct lpc32xx_eth_registers *regs;
struct lpc32xx_eth_buffers *bufs;
+ bool phy_rmii;
};
#define LPC32XX_ETH_DEVICE_SIZE (sizeof(struct lpc32xx_eth_device))
#define MII_MAX_PHY (MADR_PHY_MASK >> MADR_PHY_OFFSET)
-DECLARE_GLOBAL_DATA_PTR;
-
#if defined(CONFIG_PHYLIB) || defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
/*
* mii_reg_read - miiphy_read callback function.
*
* Returns 16bit phy register value, or 0xffff on error
*/
-static int mii_reg_read(const char *devname, u8 phy_adr, u8 reg_ofs, u16 *data)
+static int mii_reg_read(struct mii_dev *bus, int phy_adr, int devad,
+ int reg_ofs)
{
- struct eth_device *dev = eth_get_dev_by_name(devname);
+ u16 data = 0;
+ struct eth_device *dev = eth_get_dev_by_name(bus->name);
struct lpc32xx_eth_device *dlpc32xx_eth = to_lpc32xx_eth(dev);
struct lpc32xx_eth_registers *regs = dlpc32xx_eth->regs;
u32 mind_reg;
return -EFAULT;
}
- *data = (u16) readl(®s->mrdd);
+ data = (u16) readl(®s->mrdd);
debug("%s:(adr %d, off %d) => %04x\n", __func__, phy_adr,
- reg_ofs, *data);
+ reg_ofs, data);
- return 0;
+ return data;
}
/*
* Returns 0 if write succeed, -EINVAL on bad parameters
* -ETIME on timeout
*/
-static int mii_reg_write(const char *devname, u8 phy_adr, u8 reg_ofs, u16 data)
+static int mii_reg_write(struct mii_dev *bus, int phy_adr, int devad,
+ int reg_ofs, u16 data)
{
- struct eth_device *dev = eth_get_dev_by_name(devname);
+ struct eth_device *dev = eth_get_dev_by_name(bus->name);
struct lpc32xx_eth_device *dlpc32xx_eth = to_lpc32xx_eth(dev);
struct lpc32xx_eth_registers *regs = dlpc32xx_eth->regs;
u32 mind_reg;
return -EFAULT;
}
+ /* write the phy and reg addressse into the MII address reg */
+ writel((phy_adr << MADR_PHY_OFFSET) | (reg_ofs << MADR_REG_OFFSET),
+ ®s->madr);
+
+ /* write data to the MII write register */
+ writel(data, ®s->mwtd);
+
/* wait till the MII is not busy */
timeout = MII_TIMEOUT;
do {
return -EFAULT;
}
- /* write the phy and reg addressse into the MII address reg */
- writel((phy_adr << MADR_PHY_OFFSET) | (reg_ofs << MADR_REG_OFFSET),
- ®s->madr);
-
- /* write data to the MII write register */
- writel(data, ®s->mwtd);
-
/*debug("%s:(adr %d, off %d) <= %04x\n", __func__, phy_adr,
reg_ofs, data);*/
}
#endif
-#if defined(CONFIG_PHYLIB)
-int lpc32xx_eth_phy_read(struct mii_dev *bus, int phy_addr, int dev_addr,
- int reg_addr)
-{
- u16 data;
- int ret;
- ret = mii_reg_read(bus->name, phy_addr, reg_addr, &data);
- if (ret)
- return ret;
- return data;
-}
-
-int lpc32xx_eth_phy_write(struct mii_dev *bus, int phy_addr, int dev_addr,
- int reg_addr, u16 data)
-{
- return mii_reg_write(bus->name, phy_addr, reg_addr, data);
-}
-#endif
-
/*
+ * Provide default Ethernet buffers base address if target did not.
* Locate buffers in SRAM at 0x00001000 to avoid cache issues and
* maximize throughput.
*/
-
-#define LPC32XX_ETH_BUFS 0x00001000
+#if !defined(CONFIG_LPC32XX_ETH_BUFS_BASE)
+#define CONFIG_LPC32XX_ETH_BUFS_BASE 0x00001000
+#endif
static struct lpc32xx_eth_device lpc32xx_eth = {
.regs = (struct lpc32xx_eth_registers *)LPC32XX_ETH_BASE,
- .bufs = (struct lpc32xx_eth_buffers *)LPC32XX_ETH_BUFS
+ .bufs = (struct lpc32xx_eth_buffers *)CONFIG_LPC32XX_ETH_BUFS_BASE,
+#if defined(CONFIG_RMII)
+ .phy_rmii = true,
+#endif
};
#define TX_TIMEOUT 10000
struct lpc32xx_eth_buffers *bufs = lpc32xx_eth_device->bufs;
int index;
- /* Release SOFT reset to let MII talk to PHY */
- clrbits_le32(®s->mac1, MAC1_SOFT_RESET);
+ /* Initial MAC initialization */
+ writel(MAC1_PASS_ALL_RX_FRAMES, ®s->mac1);
+ writel(MAC2_PAD_CRC_ENABLE | MAC2_CRC_ENABLE, ®s->mac2);
+ writel(PKTSIZE_ALIGN, ®s->maxf);
+
+ /* Retries: 15 (0xF). Collision window: 57 (0x37). */
+ writel(0x370F, ®s->clrt);
+
+ /* Set IP gap pt 2 to default 0x12 but pt 1 to non-default 0 */
+ writel(0x0012, ®s->ipgr);
+
+ /* pass runt (smaller than 64 bytes) frames */
+ if (lpc32xx_eth_device->phy_rmii)
+ writel(COMMAND_PASSRUNTFRAME | COMMAND_RMII, ®s->command);
+ else
+ writel(COMMAND_PASSRUNTFRAME, ®s->command);
/* Configure Full/Half Duplex mode */
if (miiphy_duplex(dev->name, CONFIG_PHY_ADDR) == FULL) {
else
writel(0, ®s->supp);
- /* Initial MAC initialization */
- writel(MAC1_PASS_ALL_RX_FRAMES, ®s->mac1);
- writel(MAC2_PAD_CRC_ENABLE | MAC2_CRC_ENABLE, ®s->mac2);
- writel(PKTSIZE_ALIGN, ®s->maxf);
-
- /* Retries: 15 (0xF). Collision window: 57 (0x37). */
- writel(0x370F, ®s->clrt);
-
- /* Set IP gap pt 2 to default 0x12 but pt 1 to non-default 0 */
- writel(0x0012, ®s->ipgr);
-
- /* pass runt (smaller than 64 bytes) frames */
- writel(COMMAND_PASSRUNTFRAME, ®s->command);
-
/* Save station address */
writel((unsigned long) (dev->enetaddr[0] |
(dev->enetaddr[1] << 8)), ®s->sa2);
#if defined(CONFIG_PHYLIB)
int lpc32xx_eth_phylib_init(struct eth_device *dev, int phyid)
{
+ struct lpc32xx_eth_device *lpc32xx_eth_device =
+ container_of(dev, struct lpc32xx_eth_device, dev);
struct mii_dev *bus;
struct phy_device *phydev;
int ret;
printf("mdio_alloc failed\n");
return -ENOMEM;
}
- bus->read = lpc32xx_eth_phy_read;
- bus->write = lpc32xx_eth_phy_write;
- sprintf(bus->name, dev->name);
+ bus->read = mii_reg_read;
+ bus->write = mii_reg_write;
+ strcpy(bus->name, dev->name);
ret = mdio_register(bus);
if (ret) {
return -ENOMEM;
}
- phydev = phy_connect(bus, phyid, dev, PHY_INTERFACE_MODE_MII);
+ if (lpc32xx_eth_device->phy_rmii)
+ phydev = phy_connect(bus, phyid, dev, PHY_INTERFACE_MODE_RMII);
+ else
+ phydev = phy_connect(bus, phyid, dev, PHY_INTERFACE_MODE_MII);
+
if (!phydev) {
printf("phy_connect failed\n");
return -ENODEV;
* Set RMII management clock rate. With HCLK at 104 MHz and
* a divider of 28, this will be 3.72 MHz.
*/
-
+ writel(MCFG_RESET_MII_MGMT, ®s->mcfg);
writel(MCFG_CLOCK_SELECT_DIV28, ®s->mcfg);
/* Reset all MAC logic */
eth_register(dev);
#if defined(CONFIG_PHYLIB)
- lpc32xx_eth_phylib_init(dev, 0);
+ lpc32xx_eth_phylib_init(dev, CONFIG_PHY_ADDR);
#elif defined(CONFIG_MII) || defined(CONFIG_CMD_MII)
- miiphy_register(dev->name, mii_reg_read, mii_reg_write);
+ int retval;
+ struct mii_dev *mdiodev = mdio_alloc();
+ if (!mdiodev)
+ return -ENOMEM;
+ strncpy(mdiodev->name, dev->name, MDIO_NAME_LEN);
+ mdiodev->read = mii_reg_read;
+ mdiodev->write = mii_reg_write;
+
+ retval = mdio_register(mdiodev);
+ if (retval < 0)
+ return retval;
#endif
return 0;
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