arm: mvebu: clearfog: Add option for 2.5 Gbps SFP

While newer Linux kernels provide autoconfiguration of SFP, provide
an option for setting in U-Boot Kconfig for use prior to booting.

Signed-off-by: Joel Johnson <mrjoel@lixil.net>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/board/solidrun/clearfog/Kconfig b/board/solidrun/clearfog/Kconfig
index 936d5918f8a62737b820d053fec841529a2d4faa..c910e17093c7534eb91aefdd1b9e519bb6451cdc 100644 (file)
--- a/board/solidrun/clearfog/Kconfig
+++ b/board/solidrun/clearfog/Kconfig
@@ -15,4 +15,11 @@ config TARGET_CLEARFOG_BASE
          detection via additional EEPROM hardware. This option enables selecting
          the Base variant for older hardware revisions.
 
+config CLEARFOG_SFP_25GB
+       bool "Enable 2.5 Gbps mode for SFP"
+       help
+         Set the SFP module connection to support 2.5 Gbps transfer speed for the
+         SGMII connection (requires a supporting SFP). By default, transfer speed
+         of 1.25 Gbps is used, suitable for a more common 1 Gbps SFP module.
+
 endmenu

diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c
index 11d3a7f877bcdf3c2523093d4c5b8959f093d626..8f3e5dc6a346bc39d4605a5d6e9cd7b87cbbdba7 100644 (file)
--- a/board/solidrun/clearfog/clearfog.c
+++ b/board/solidrun/clearfog/clearfog.c
@@ -63,6 +63,11 @@ int hws_board_topology_load(struct serdes_map **serdes_map_array, u8 *count)
 {
        cf_read_tlv_data();
 
+       /* Apply build configuration options before runtime configuration */
+       if (IS_ENABLED(CONFIG_CLEARFOG_SFP_25GB))
+               board_serdes_map[5].serdes_speed = SERDES_SPEED_3_125_GBPS;
+
+       /* Apply runtime detection changes */
        if (sr_product_is(&cf_tlv_data, "Clearfog GTR")) {
                board_serdes_map[0].serdes_type = PEX0;
                board_serdes_map[0].serdes_speed = SERDES_SPEED_5_GBPS;