Hi Marek,
looks good, as small comment below...
On 12.05.2017 16:10, Marek Behún wrote:
The DDR3 training code for Marvell A38X currently computes 1t timing when given board topology map of the Turris Omnia, but Omnia needs 2t.
This patch adds support for enforcing the 2t timing in struct hws_topology_map, through a new enum hws_timing, which can assume following values: HWS_TIM_DEFAULT - default behaviour, compute whether to enable 2t from the number of CSs HWS_TIM_1T - enforce 1t HWS_TIM_2T - enforce 2t
This patch also sets all the board topology maps (db-88f6820-amc, db-88f6820-gp, controlcenterdc and clearfog) to have timing set to HWS_TIM_DEFAULT.
Signed-off-by: Marek Behun marek.behun@nic.cz
board/Marvell/db-88f6820-amc/db-88f6820-amc.c | 3 ++- board/Marvell/db-88f6820-gp/db-88f6820-gp.c | 3 ++- board/gdsys/a38x/controlcenterdc.c | 3 ++- board/solidrun/clearfog/clearfog.c | 3 ++- drivers/ddr/marvell/a38x/ddr3_training.c | 5 +++++ drivers/ddr/marvell/a38x/ddr_topology_def.h | 9 +++++++++ 6 files changed, 22 insertions(+), 4 deletions(-)
diff --git a/board/Marvell/db-88f6820-amc/db-88f6820-amc.c b/board/Marvell/db-88f6820-amc/db-88f6820-amc.c index cade99c..40fa599 100644 --- a/board/Marvell/db-88f6820-amc/db-88f6820-amc.c +++ b/board/Marvell/db-88f6820-amc/db-88f6820-amc.c @@ -69,7 +69,8 @@ static struct hws_topology_map board_topology_map = { MEM_4G, /* mem_size */ DDR_FREQ_800, /* frequency */ 0, 0, /* cas_l cas_wl */
HWS_TEMP_LOW} }, /* temperature */
HWS_TEMP_LOW, /* temperature */HWS_TIM_DEFAULT} }, /* timing */}; diff --git a/board/Marvell/db-88f6820-gp/db-88f6820-gp.c b/board/Marvell/db-88f6820-gp/db-88f6820-gp.c index e700781..a1974cb 100644 --- a/board/Marvell/db-88f6820-gp/db-88f6820-gp.c +++ b/board/Marvell/db-88f6820-gp/db-88f6820-gp.c @@ -90,7 +90,8 @@ static struct hws_topology_map board_topology_map = { MEM_4G, /* mem_size */ DDR_FREQ_800, /* frequency */ 0, 0, /* cas_l cas_wl */
HWS_TEMP_LOW} }, /* temperature */
HWS_TEMP_LOW, /* temperature */HWS_TIM_DEFAULT} }, /* timing */}; diff --git a/board/gdsys/a38x/controlcenterdc.c b/board/gdsys/a38x/controlcenterdc.c index f0efb53..32168d3 100644 --- a/board/gdsys/a38x/controlcenterdc.c +++ b/board/gdsys/a38x/controlcenterdc.c @@ -53,7 +53,8 @@ static struct hws_topology_map ddr_topology_map = { MEM_4G, /* mem_size */ DDR_FREQ_533, /* frequency */ 0, 0, /* cas_l cas_wl */
HWS_TEMP_LOW} }, /* temperature */
HWS_TEMP_LOW, /* temperature */HWS_TIM_DEFAULT} }, /* timing */}; diff --git a/board/solidrun/clearfog/clearfog.c b/board/solidrun/clearfog/clearfog.c index 2773f59..036e183 100644 --- a/board/solidrun/clearfog/clearfog.c +++ b/board/solidrun/clearfog/clearfog.c @@ -83,7 +83,8 @@ static struct hws_topology_map board_topology_map = { MEM_4G, /* mem_size */ DDR_FREQ_800, /* frequency */ 0, 0, /* cas_l cas_wl */
HWS_TEMP_LOW} }, /* temperature */
HWS_TEMP_LOW, /* temperature */HWS_TIM_DEFAULT} }, /* timing */}; diff --git a/drivers/ddr/marvell/a38x/ddr3_training.c b/drivers/ddr/marvell/a38x/ddr3_training.c index 7e0749f..c79db6a 100644 --- a/drivers/ddr/marvell/a38x/ddr3_training.c +++ b/drivers/ddr/marvell/a38x/ddr3_training.c @@ -571,6 +571,11 @@ int hws_ddr3_tip_init_controller(u32 dev_num, struct init_cntr_param *init_cntr_
if (mode2_t != 0xff) { t2t = mode2_t;
} else if (tm->interface_params[if_id].timing != HWS_TIM_DEFAULT) {/* Board topology map is forcing timing */t2t = (tm->interface_params[if_id].timing == HWS_TIM_2T) ? 1 : 0;
Perhaps its better to create a local variable for this "tm->interface_params[if_id].timing" value. It makes the lines somewhat shorter and easier to read and you don't need to address it twice this way. Something like this instead:
+ timing = tm->interface_params[if_id].timing; ...
+ } else if (timing != HWS_TIM_DEFAULT) { + /* Board topology map is forcing timing */ + t2t = timing == HWS_TIM_2T ? 1 : 0;
Other than this, you can add my:
Reviewed-by: Stefan Roese sr@denx.de
to the next patch version.
Thanks, Stefan