+// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2012 Freescale Semiconductor, Inc.
- * Andy Fleming <afleming@freescale.com>
+ * Andy Fleming <afleming@gmail.com>
* Roy Zang <tie-fei.zang@freescale.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
* Some part is taken from tsec.c
*/
#include <common.h>
#include <miiphy.h>
#include <phy.h>
#include <asm/io.h>
-#include <asm/fsl_memac.h>
+#include <fsl_memac.h>
#include <fm_eth.h>
+#ifdef CONFIG_SYS_MEMAC_LITTLE_ENDIAN
+#define memac_out_32(a, v) out_le32(a, v)
+#define memac_clrbits_32(a, v) clrbits_le32(a, v)
+#define memac_setbits_32(a, v) setbits_le32(a, v)
+#else
+#define memac_out_32(a, v) out_be32(a, v)
+#define memac_clrbits_32(a, v) clrbits_be32(a, v)
+#define memac_setbits_32(a, v) setbits_be32(a, v)
+#endif
+
+static u32 memac_in_32(u32 *reg)
+{
+#ifdef CONFIG_SYS_MEMAC_LITTLE_ENDIAN
+ return in_le32(reg);
+#else
+ return in_be32(reg);
+#endif
+}
+
/*
* Write value to the PHY for this device to the register at regnum, waiting
* until the write is done before it returns. All PHY configuration has to be
if (dev_addr == MDIO_DEVAD_NONE) {
c45 = 0; /* clause 22 */
dev_addr = regnum & 0x1f;
- clrbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
- } else {
- setbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
- setbits_be32(®s->mdio_stat, MDIO_STAT_HOLD_15_CLK);
- }
+ memac_clrbits_32(®s->mdio_stat, MDIO_STAT_ENC);
+ } else
+ memac_setbits_32(®s->mdio_stat, MDIO_STAT_ENC);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Set the port and dev addr */
mdio_ctl = MDIO_CTL_PORT_ADDR(port_addr) | MDIO_CTL_DEV_ADDR(dev_addr);
- out_be32(®s->mdio_ctl, mdio_ctl);
+ memac_out_32(®s->mdio_ctl, mdio_ctl);
/* Set the register address */
if (c45)
- out_be32(®s->mdio_addr, regnum & 0xffff);
+ memac_out_32(®s->mdio_addr, regnum & 0xffff);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Write the value to the register */
- out_be32(®s->mdio_data, MDIO_DATA(value));
+ memac_out_32(®s->mdio_data, MDIO_DATA(value));
/* Wait till the MDIO write is complete */
- while ((in_be32(®s->mdio_data)) & MDIO_DATA_BSY)
+ while ((memac_in_32(®s->mdio_data)) & MDIO_DATA_BSY)
;
return 0;
u32 c45 = 1;
if (dev_addr == MDIO_DEVAD_NONE) {
+ if (!strcmp(bus->name, DEFAULT_FM_TGEC_MDIO_NAME))
+ return 0xffff;
c45 = 0; /* clause 22 */
dev_addr = regnum & 0x1f;
- clrbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
- } else {
- setbits_be32(®s->mdio_stat, MDIO_STAT_ENC);
- setbits_be32(®s->mdio_stat, MDIO_STAT_HOLD_15_CLK);
- }
+ memac_clrbits_32(®s->mdio_stat, MDIO_STAT_ENC);
+ } else
+ memac_setbits_32(®s->mdio_stat, MDIO_STAT_ENC);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Set the Port and Device Addrs */
mdio_ctl = MDIO_CTL_PORT_ADDR(port_addr) | MDIO_CTL_DEV_ADDR(dev_addr);
- out_be32(®s->mdio_ctl, mdio_ctl);
+ memac_out_32(®s->mdio_ctl, mdio_ctl);
/* Set the register address */
if (c45)
- out_be32(®s->mdio_addr, regnum & 0xffff);
+ memac_out_32(®s->mdio_addr, regnum & 0xffff);
/* Wait till the bus is free */
- while ((in_be32(®s->mdio_stat)) & MDIO_STAT_BSY)
+ while ((memac_in_32(®s->mdio_stat)) & MDIO_STAT_BSY)
;
/* Initiate the read */
mdio_ctl |= MDIO_CTL_READ;
- out_be32(®s->mdio_ctl, mdio_ctl);
+ memac_out_32(®s->mdio_ctl, mdio_ctl);
/* Wait till the MDIO write is complete */
- while ((in_be32(®s->mdio_data)) & MDIO_DATA_BSY)
+ while ((memac_in_32(®s->mdio_data)) & MDIO_DATA_BSY)
;
/* Return all Fs if nothing was there */
- if (in_be32(®s->mdio_stat) & MDIO_STAT_RD_ER)
+ if (memac_in_32(®s->mdio_stat) & MDIO_STAT_RD_ER)
return 0xffff;
- return in_be32(®s->mdio_data) & 0xffff;
+ return memac_in_32(®s->mdio_data) & 0xffff;
}
int memac_mdio_reset(struct mii_dev *bus)
bus->read = memac_mdio_read;
bus->write = memac_mdio_write;
bus->reset = memac_mdio_reset;
- sprintf(bus->name, info->name);
+ strcpy(bus->name, info->name);
bus->priv = info->regs;
+ /*
+ * On some platforms like B4860, default value of MDIO_CLK_DIV bits
+ * in mdio_stat(mdio_cfg) register generates MDIO clock too high
+ * (much higher than 2.5MHz), violating the IEEE specs.
+ * On other platforms like T1040, default value of MDIO_CLK_DIV bits
+ * is zero, so MDIO clock is disabled.
+ * So, for proper functioning of MDIO, MDIO_CLK_DIV bits needs to
+ * be properly initialized.
+ * NEG bit default should be '1' as per FMAN-v3 RM, but on platform
+ * like T2080QDS, this bit default is '0', which leads to MDIO failure
+ * on XAUI PHY, so set this bit definitely.
+ */
+ memac_setbits_32(
+ &((struct memac_mdio_controller *)info->regs)->mdio_stat,
+ MDIO_STAT_CLKDIV(258) | MDIO_STAT_NEG);
+
return mdio_register(bus);
}
projects / thirdparty / u-boot.git / blobdiff