(added Joe to Cc as network custodian)

On 14.02.2017 13:13, Konstantin Porotchkin wrote:
Hi, Stefan,

On 2/14/2017 13:49, Stefan Roese wrote:
Hi Kosta,

On 13.02.2017 14:38, kos...@marvell.com wrote:
From: Konstantin Porotchkin <kos...@marvell.com>

Implement the board-specific network init function for
ESPRESSOBin community board, setting the on-board Topaz
switch port to forward mode and allow network connection
through any of the available Etherenet ports.

Signed-off-by: Konstantin Porotchkin <kos...@marvell.com>
Cc: Stefan Roese <s...@denx.de>
Cc: Igal Liberman <ig...@marvell.com>
---
 board/Marvell/mvebu_db-88f3720/board.c | 49
++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)

diff --git a/board/Marvell/mvebu_db-88f3720/board.c
b/board/Marvell/mvebu_db-88f3720/board.c
index 3337f3f..45098ce 100644
--- a/board/Marvell/mvebu_db-88f3720/board.c
+++ b/board/Marvell/mvebu_db-88f3720/board.c
@@ -6,6 +6,7 @@

 #include <common.h>
 #include <i2c.h>
+#include <phy.h>
 #include <asm/io.h>
 #include <asm/arch/cpu.h>
 #include <asm/arch/soc.h>
@@ -156,3 +157,51 @@ int board_xhci_enable(void)

     return 0;
 }
+
+static int mii_multi_chip_mode_write(struct mii_dev *bus, int
dev_smi_addr,
+                     int smi_addr, int reg, u16 value)
+{
+    u16 data = 0;
+
+    if (bus->write(bus, dev_smi_addr, 0, 1, value) != 0) {
+        printf("Error writing to the PHY addr=%02x reg=%02x\n",
+               smi_addr, reg);
+        return -EFAULT;
+    }
+
+    data = (1 << 15) | (1 << 12) | (1 << 10) | (smi_addr << 5) | reg;
+    if (bus->write(bus, dev_smi_addr, 0, 0, data) != 0) {
+        printf("Error writing to the PHY addr=%02x reg=%02x\n",
+               smi_addr, reg);
+        return -EFAULT;
+    }
+
+    return 0;
+}
+
+
+int board_network_enable(struct mii_dev *bus)
+{
+    if (!of_machine_is_compatible("marvell,armada-3720-espressobin"))
+        return 0;
+
+    /*
+     * FIXME: remove this code once Topaz driver gets available
+     * A3720 Community Board Only
+     * Configure Topaz switch (88E6341)
+     * Set port 0,1,2,3 to forwarding Mode
+     */

Just checking: Is this "Topaz switch driver" something thats being
worked on or in the queue to do?

I currently do not have it in my queue.
I think the driver exists in the kernel (or will exist in 4.10/4.11
release), so we may want to port it if required.
Which switch operations are needed at u-bot stage?

I'm not 100% sure if there is anything really "needed" other than
to get some ports into operation for the ethernet driver connected
to this switch. So it might be that such a few register writes
are acceptable - I'm pretty sure other boards do it this way as
well.

On the other hand you could take a look at the
"drivers/net/phy/mv88e61xx.c" switch driver. Might be that this is
something similar to what you want / need.

Thanks,
Stefan
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