diff options
| author | Chris Packham <judge.packham@gmail.com> | 2020-01-30 12:50:44 +1300 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2020-04-14 08:59:44 +0200 |
| commit | 236609d93c76b9e108d765cd7cf0632063ea8273 (patch) | |
| tree | af7271c3b37a41b1731e2c56f06178e6f5d6043d /drivers/ddr/marvell | |
| parent | 891483186052b259852f3f48926ff307763f4eb0 (diff) | |
ddr: marvell: a38x: Allow boards to specify CK_DELAY parameter
For some layouts it is necessary to adjust the CK_DELAY parameter to
successfully complete DDR training. Add the ability to specify the
CK_DELAY in the mv_ddr_topology_map.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Diffstat (limited to 'drivers/ddr/marvell')
| -rw-r--r-- | drivers/ddr/marvell/a38x/ddr3_init.c | 5 | ||||
| -rw-r--r-- | drivers/ddr/marvell/a38x/ddr_topology_def.h | 3 | ||||
| -rw-r--r-- | drivers/ddr/marvell/a38x/mv_ddr_topology.c | 10 | ||||
| -rw-r--r-- | drivers/ddr/marvell/a38x/mv_ddr_topology.h | 1 |
4 files changed, 19 insertions, 0 deletions
diff --git a/drivers/ddr/marvell/a38x/ddr3_init.c b/drivers/ddr/marvell/a38x/ddr3_init.c index 22c8f9ca54..a971cc155a 100644 --- a/drivers/ddr/marvell/a38x/ddr3_init.c +++ b/drivers/ddr/marvell/a38x/ddr3_init.c @@ -106,8 +106,10 @@ static int mv_ddr_training_params_set(u8 dev_num) struct tune_train_params params; int status; u32 cs_num; + int ck_delay; cs_num = mv_ddr_cs_num_get(); + ck_delay = mv_ddr_ck_delay_get(); /* NOTE: do not remove any field initilization */ params.ck_delay = TUNE_TRAINING_PARAMS_CK_DELAY; @@ -131,6 +133,9 @@ static int mv_ddr_training_params_set(u8 dev_num) params.g_odt_config = TUNE_TRAINING_PARAMS_ODT_CONFIG_2CS; } + if (ck_delay > 0) + params.ck_delay = ck_delay; + status = ddr3_tip_tune_training_params(dev_num, ¶ms); if (MV_OK != status) { printf("%s Training Sequence - FAILED\n", ddr_type); diff --git a/drivers/ddr/marvell/a38x/ddr_topology_def.h b/drivers/ddr/marvell/a38x/ddr_topology_def.h index 950f296ff9..34196b1662 100644 --- a/drivers/ddr/marvell/a38x/ddr_topology_def.h +++ b/drivers/ddr/marvell/a38x/ddr_topology_def.h @@ -127,6 +127,9 @@ struct mv_ddr_topology_map { /* Clock enable mask */ u32 clk_enable; + + /* Clock delay */ + int ck_delay; }; enum mv_ddr_iface_mode { diff --git a/drivers/ddr/marvell/a38x/mv_ddr_topology.c b/drivers/ddr/marvell/a38x/mv_ddr_topology.c index ef3b658a78..09840b1e70 100644 --- a/drivers/ddr/marvell/a38x/mv_ddr_topology.c +++ b/drivers/ddr/marvell/a38x/mv_ddr_topology.c @@ -229,6 +229,16 @@ int mv_ddr_is_ecc_ena(void) return 0; } +int mv_ddr_ck_delay_get(void) +{ + struct mv_ddr_topology_map *tm = mv_ddr_topology_map_get(); + + if (tm->ck_delay) + return tm->ck_delay; + + return -1; +} + /* translate topology map definition to real memory size in bits */ static unsigned int mem_size[] = { ADDR_SIZE_512MB, diff --git a/drivers/ddr/marvell/a38x/mv_ddr_topology.h b/drivers/ddr/marvell/a38x/mv_ddr_topology.h index 766f25db57..4fca47689f 100644 --- a/drivers/ddr/marvell/a38x/mv_ddr_topology.h +++ b/drivers/ddr/marvell/a38x/mv_ddr_topology.h @@ -319,6 +319,7 @@ unsigned short mv_ddr_bus_bit_mask_get(void); unsigned int mv_ddr_if_bus_width_get(void); unsigned int mv_ddr_cs_num_get(void); int mv_ddr_is_ecc_ena(void); +int mv_ddr_ck_delay_get(void); unsigned long long mv_ddr_mem_sz_per_cs_get(void); unsigned long long mv_ddr_mem_sz_get(void); unsigned int mv_ddr_rtt_nom_get(void); |