Am 21.03.22 um 10:26 schrieb Oleksij Rempel:
Add DSA based port multiplexing functionality for barebox. With this
framework we will be able to use different ports of as switch
separately.

Signed-off-by: Oleksij Rempel <o.rem...@pengutronix.de>
---
  drivers/net/Kconfig  |   3 +
  drivers/net/Makefile |   1 +
  drivers/net/dsa.c    | 385 +++++++++++++++++++++++++++++++++++++++++++
  include/dsa.h        |  94 +++++++++++
  4 files changed, 483 insertions(+)
  create mode 100644 drivers/net/dsa.c
  create mode 100644 include/dsa.h

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index b583299a44..419f8c515d 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -17,6 +17,9 @@ config HAS_MACB
  config PHYLIB
        bool

+config DSA
+       bool
+
  menu "Network drivers"
        depends on NET

diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index 563dfdfd9e..ef3513a6b0 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -1,4 +1,5 @@
  # SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_DSA)                      += dsa.o
  obj-$(CONFIG_PHYLIB)                  += phy/
  obj-$(CONFIG_NET_USB)                 += usb/

diff --git a/drivers/net/dsa.c b/drivers/net/dsa.c
new file mode 100644
index 0000000000..a9e3563b9b
--- /dev/null
+++ b/drivers/net/dsa.c
@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <common.h>
+#include <dma.h>
+#include <dsa.h>
+#include <of_net.h>
+
+static int dsa_port_probe(struct eth_device *edev)
+{
+       struct dsa_port *dp = edev->priv;
+       struct dsa_switch *ds = dp->ds;
+       const struct dsa_ops *ops = ds->ops;
+       phy_interface_t interface;
+       int ret;
+
+       interface = of_get_phy_mode(dp->dev.device_node);
+       ret = phy_device_connect(edev, NULL, 0, NULL, 0, interface);
+       if (ret)
+               return ret;
+
+       if (ops->port_probe) {
+               ret = ops->port_probe(dp, dp->index, dp->edev.phydev);
+               if (ret)
+                       return ret;
+       }

The probe part should be reworked to enable CLK for RMII PHYs early.

--
Regards,
Oleksij

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