mpc83xx: Add gdsys hrcon board
The gdsys hrcon board is based on a Freescale MPC8308 SOC.
It boots from NOR-Flash, kernel and rootfs are stored on
SD-Card.
On board peripherals include:
- 1x GbE (optional)
- Lattice ECP3 FPGA connected via eLBC and PCIe
Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/board/gdsys/common/ihs_mdio.c b/board/gdsys/common/ihs_mdio.c
new file mode 100644
index 0000000..1d6eb7b
--- /dev/null
+++ b/board/gdsys/common/ihs_mdio.c
@@ -0,0 +1,88 @@
+/*
+ * (C) Copyright 2014
+ * Dirk Eibach, Guntermann & Drunck GmbH, eibach@gdsys.de
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+
+#include <gdsys_fpga.h>
+#include <miiphy.h>
+
+#include "ihs_mdio.h"
+
+static int ihs_mdio_idle(struct mii_dev *bus)
+{
+ struct ihs_mdio_info *info = bus->priv;
+ u16 val;
+ unsigned int ctr = 0;
+
+ do {
+ FPGA_GET_REG(info->fpga, mdio.control, &val);
+ udelay(100);
+ if (ctr++ > 10)
+ return -1;
+ } while (!(val & (1 << 12)));
+
+ return 0;
+}
+
+static int ihs_mdio_reset(struct mii_dev *bus)
+{
+ ihs_mdio_idle(bus);
+
+ return 0;
+}
+
+static int ihs_mdio_read(struct mii_dev *bus, int addr, int dev_addr,
+ int regnum)
+{
+ struct ihs_mdio_info *info = bus->priv;
+ u16 val;
+
+ ihs_mdio_idle(bus);
+
+ FPGA_SET_REG(info->fpga, mdio.control,
+ ((addr & 0x1f) << 5) | (regnum & 0x1f) | (2 << 10));
+
+ /* wait for rx data available */
+ udelay(100);
+
+ FPGA_GET_REG(info->fpga, mdio.rx_data, &val);
+
+ return val;
+}
+
+static int ihs_mdio_write(struct mii_dev *bus, int addr, int dev_addr,
+ int regnum, u16 value)
+{
+ struct ihs_mdio_info *info = bus->priv;
+
+ ihs_mdio_idle(bus);
+
+ FPGA_SET_REG(info->fpga, mdio.address_data, value);
+ FPGA_SET_REG(info->fpga, mdio.control,
+ ((addr & 0x1f) << 5) | (regnum & 0x1f) | (1 << 10));
+
+ return 0;
+}
+
+int ihs_mdio_init(struct ihs_mdio_info *info)
+{
+ struct mii_dev *bus = mdio_alloc();
+
+ if (!bus) {
+ printf("Failed to allocate FSL MDIO bus\n");
+ return -1;
+ }
+
+ bus->read = ihs_mdio_read;
+ bus->write = ihs_mdio_write;
+ bus->reset = ihs_mdio_reset;
+ sprintf(bus->name, info->name);
+
+ bus->priv = info;
+
+ return mdio_register(bus);
+}