Convert the current miiphybb documentation to rst. Rename
the README.bitbangMII to bitbangmii.rst in the process.

Signed-off-by: Marek Vasut <marek.vasut+rene...@mailbox.org>
---
Cc: Jim Liu <jim.t90...@gmail.com>
Cc: Joe Hershberger <joe.hershber...@ni.com>
Cc: Mario Six <mario....@gdsys.cc>
Cc: Michael Chang <zhang971090...@gmail.com>
Cc: Nobuhiro Iwamatsu <iwama...@nigauri.org>
Cc: Parvathi Bhogaraju <pbhogar...@microsoft.com>
Cc: Paul Barker <paul.barker...@bp.renesas.com>
Cc: Ramon Fried <rfried....@gmail.com>
Cc: Tom Rini <tr...@konsulko.com>
Cc: u-boot@lists.denx.de
---
 doc/README.bitbangMII | 67 ---------------------------------------
 doc/bitbangmii.rst    | 73 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+), 67 deletions(-)
 delete mode 100644 doc/README.bitbangMII
 create mode 100644 doc/bitbangmii.rst

diff --git a/doc/README.bitbangMII b/doc/README.bitbangMII
deleted file mode 100644
index 78b4ef880cb..00000000000
--- a/doc/README.bitbangMII
+++ /dev/null
@@ -1,67 +0,0 @@
-The miiphybb ( Bit-banged MII bus driver ) supports an arbitrary number of
-MII buses. This feature is useful when a driver uses different MII buses for
-different PHYs and all (or a part) of these buses are implemented via
-bit-banging mode.
-
-The driver requires that the following macros should be defined into the board
-configuration file:
-
-CONFIG_BITBANGMII      - Enable the miiphybb driver
-
-The driver code needs to allocate a regular MDIO device using mdio_alloc()
-and assign .read and .write accessors which wrap bb_miiphy_read() and
-bb_miiphy_write() functions respectively. The bb_miiphy_read() and
-bb_miiphy_write() functions take a pointer to a callback structure,
-struct bb_miiphy_bus_ops. The struct bb_miiphy_bus_ops has the following
-fields/callbacks (see miiphy.h for details):
-
-int (*mdio_active)()   - Activate the MDIO pin as output
-int (*mdio_tristate)() - Activate the MDIO pin as input/tristate pin
-int (*set_mdio)()      - Write the MDIO pin
-int (*get_mdio)()      - Read the MDIO pin
-int (*set_mdc)()       - Write the MDC pin
-int (*delay)()        - Delay function
-
-The driver code will look like:
-
-static const struct bb_miiphy_bus_ops ravb_bb_miiphy_bus_ops = {
-       .mdio_active    = ravb_bb_mdio_active,
-       .mdio_tristate  = ravb_bb_mdio_tristate,
-       .set_mdio       = ravb_bb_set_mdio,
-       .get_mdio       = ravb_bb_get_mdio,
-       .set_mdc        = ravb_bb_set_mdc,
-       .delay          = ravb_bb_delay,
-};
-
-static int ravb_bb_miiphy_read(struct mii_dev *miidev, int addr,
-                              int devad, int reg)
-{
-       return bb_miiphy_read(miidev, &ravb_bb_miiphy_bus_ops,
-                             addr, devad, reg);
-}
-
-static int ravb_bb_miiphy_write(struct mii_dev *miidev, int addr,
-                               int devad, int reg, u16 value)
-{
-       return bb_miiphy_write(miidev, &ravb_bb_miiphy_bus_ops,
-                              addr, devad, reg, value);
-}
-
-static int ravb_probe(struct udevice *dev)
-{
-       struct mii_dev *mdiodev;
-...
-       mdiodev = mdio_alloc();
-       if (!mdiodev)
-               return -ENOMEM;
-
-       mdiodev->read = ravb_bb_miiphy_read;
-       mdiodev->write = ravb_bb_miiphy_write;
-       mdiodev->priv = eth;
-       snprintf(mdiodev->name, sizeof(mdiodev->name), dev->name);
-
-       ret = mdio_register(mdiodev);
-...
-
-2009 Industrie Dial Face S.p.A.
-     Luigi 'Comio' Mantellini <luigi.mantell...@idf-hit.com>
diff --git a/doc/bitbangmii.rst b/doc/bitbangmii.rst
new file mode 100644
index 00000000000..95707e8f57f
--- /dev/null
+++ b/doc/bitbangmii.rst
@@ -0,0 +1,73 @@
+.. SPDX-License-Identifier: GPL-2.0+
+
+Bit-banged MII bus support
+==========================
+
+The miiphybb ( Bit-banged MII bus driver ) supports an arbitrary number of
+MII buses. This feature is useful when a driver uses different MII buses for
+different PHYs and all (or a part) of these buses are implemented via
+bit-banging mode.
+
+The driver requires that the following macros should be defined into the board
+configuration file:
+
+    CONFIG_BITBANGMII      - Enable the miiphybb driver
+
+The driver code needs to allocate a regular MDIO device using mdio_alloc()
+and assign .read and .write accessors which wrap bb_miiphy_read() and
+bb_miiphy_write() functions respectively. The bb_miiphy_read() and
+bb_miiphy_write() functions take a pointer to a callback structure,
+struct bb_miiphy_bus_ops. The struct bb_miiphy_bus_ops has the following
+fields/callbacks (see miiphy.h for details):
+
+    int (*mdio_active)()   - Activate the MDIO pin as output
+    int (*mdio_tristate)() - Activate the MDIO pin as input/tristate pin
+    int (*set_mdio)()      - Write the MDIO pin
+    int (*get_mdio)()      - Read the MDIO pin
+    int (*set_mdc)()       - Write the MDC pin
+    int (*delay)()         - Delay function
+
+The driver code will look like:
+
+    static const struct bb_miiphy_bus_ops ravb_bb_miiphy_bus_ops = {
+        .mdio_active      = ravb_bb_mdio_active,
+        .mdio_tristate    = ravb_bb_mdio_tristate,
+        .set_mdio         = ravb_bb_set_mdio,
+        .get_mdio         = ravb_bb_get_mdio,
+        .set_mdc          = ravb_bb_set_mdc,
+        .delay            = ravb_bb_delay,
+    };
+
+    static int ravb_bb_miiphy_read(struct mii_dev *miidev, int addr,
+                                   int devad, int reg)
+    {
+        return bb_miiphy_read(miidev, &ravb_bb_miiphy_bus_ops,
+                              addr, devad, reg);
+    }
+
+    static int ravb_bb_miiphy_write(struct mii_dev *miidev, int addr,
+                                    int devad, int reg, u16 value)
+    {
+        return bb_miiphy_write(miidev, &ravb_bb_miiphy_bus_ops,
+                               addr, devad, reg, value);
+    }
+
+    static int ravb_probe(struct udevice *dev)
+    {
+        struct mii_dev *mdiodev;
+    ...
+        mdiodev = mdio_alloc();
+        if (!mdiodev)
+            return -ENOMEM;
+
+        mdiodev->read = ravb_bb_miiphy_read;
+        mdiodev->write = ravb_bb_miiphy_write;
+        mdiodev->priv = eth;
+        snprintf(mdiodev->name, sizeof(mdiodev->name), dev->name);
+
+        ret = mdio_register(mdiodev);
+    ...
+    }
+
+2009 Industrie Dial Face S.p.A.
+     Luigi 'Comio' Mantellini <luigi.mantell...@idf-hit.com>
-- 
2.47.2

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