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

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.behun@nic.cz

Reviewed-by: Stefan Roese sr@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