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arm: mvebu: turris_mox: Change SERDES map depending on module topology

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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.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Marek Behún 2018-12-17 16:10:02 +01:00 committed by Stefan Roese
parent 296c64ea41
commit 9433cd1109
1 changed files with 33 additions and 0 deletions
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33
board/CZ.NIC/turris_mox/turris_mox.c
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@ -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;