diff options
Diffstat (limited to 'arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c')
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c index ef97556..179cac6 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch3_serdes.c @@ -28,6 +28,20 @@ __weak void wriop_init_dpmac_qsgmii(int sd, int lane_prtcl) return; } +/* + *The return value of this func is the serdes protocol used. + *Typically this function is called number of times depending + *upon the number of serdes blocks in the Silicon. + *Zero is used to denote that no serdes was enabled, + *this is the case when golden RCW was used where DPAA2 bring was + *intentionally removed to achieve boot to prompt +*/ + +__weak int serdes_get_number(int serdes, int cfg) +{ + return cfg; +} + int is_serdes_configured(enum srds_prtcl device) { int ret = 0; @@ -73,6 +87,9 @@ int serdes_get_first_lane(u32 sd, enum srds_prtcl device) printf("invalid SerDes%d\n", sd); break; } + + cfg = serdes_get_number(sd, cfg); + /* Is serdes enabled at all? */ if (cfg == 0) return -ENODEV; @@ -99,6 +116,8 @@ void serdes_init(u32 sd, u32 sd_addr, u32 rcwsr, u32 sd_prctl_mask, cfg = gur_in32(&gur->rcwsr[rcwsr - 1]) & sd_prctl_mask; cfg >>= sd_prctl_shift; + + cfg = serdes_get_number(sd, cfg); printf("Using SERDES%d Protocol: %d (0x%x)\n", sd + 1, cfg, cfg); if (!is_serdes_prtcl_valid(sd, cfg)) |