Re: [U-Boot] [PATCH u-boot-marvell v3 02/10] board: turris_mox: Change SERDES map depending on module topology

[Stefan Roese]

On 20.11.18 13:04, Marek Behún wrote:

When SFP module is connected directly to CPU module we want the SGMII
lane speed at 1.25 Gbps.

This is a temporary solution till there is a comphy driver in the kernel
capable of changing SGMII speed at runtime.

Signed-off-by: Marek Behún <marek.be...@nic.cz>

Reviewed-by: Stefan Roese <s...@denx.de>

Thanks,
Stefan

---
  board/CZ.NIC/turris_mox/turris_mox.c | 33 ++++++++++++++++++++++++++++
  1 file changed, 33 insertions(+)

diff --git a/board/CZ.NIC/turris_mox/turris_mox.c 
b/board/CZ.NIC/turris_mox/turris_mox.c
index 415c462493..3c0ab58756 100644
--- a/board/CZ.NIC/turris_mox/turris_mox.c
+++ b/board/CZ.NIC/turris_mox/turris_mox.c
@@ -8,6 +8,7 @@
  #include <dm.h>
  #include <clk.h>
  #include <spi.h>
+#include <mvebu/comphy.h>
  #include <linux/string.h>
  #include <linux/libfdt.h>
  #include <fdt_support.h>
@@ -206,6 +207,38 @@ static int mox_get_topology(const u8 **ptopology, int 
*psize, int *pis_sd)
        return 0;
  }

+int comphy_update_map(struct comphy_map *serdes_map, int count)

+{
+       int ret, i, size, sfpindex = -1, swindex = -1;
+       const u8 *topology;
+
+       ret = mox_get_topology(&topology, &size, NULL);
+       if (ret)
+               return ret;
+
+       for (i = 0; i < size; ++i) {
+               if (topology[i] == MOX_MODULE_SFP && sfpindex == -1)
+                       sfpindex = i;
+               else if ((topology[i] == MOX_MODULE_TOPAZ ||
+                         topology[i] == MOX_MODULE_PERIDOT) &&
+                        swindex == -1)
+                       swindex = i;
+       }
+
+       if (sfpindex >= 0 && swindex >= 0) {
+               if (sfpindex < swindex)
+                       serdes_map[0].speed = PHY_SPEED_1_25G;
+               else
+                       serdes_map[0].speed = PHY_SPEED_3_125G;
+       } else if (sfpindex >= 0) {
+               serdes_map[0].speed = PHY_SPEED_1_25G;
+       } else if (swindex >= 0) {
+               serdes_map[0].speed = PHY_SPEED_3_125G;
+       }
+
+       return 0;
+}
+
  int last_stage_init(void)
  {
        int ret, i;

Viele Grüße,
Stefan

--
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
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Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: s...@denx.de
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