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ram: rk3399: Use rank mask in wdql data training

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Add rank_mask based on the rank number, this would keep
the wdql data training loop based on the desired rank mask
value instead of looping for all values.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
This commit is contained in:
Jagan Teki 2019-07-15 23:58:42 +05:30 committed by Kever Yang
parent 708e9a79dc
commit 21cf392b1f
1 changed files with 7 additions and 1 deletions
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8
drivers/ram/rockchip/sdram_rk3399.c
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@ -861,11 +861,17 @@ static int data_training_wdql(const struct chan_info *chan, u32 channel,
u32 *denali_pi = chan->pi->denali_pi;
u32 i, tmp;
u32 rank = params->ch[channel].cap_info.rank;
u32 rank_mask;
/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
writel(0x00003f7c, (&denali_pi[175]));
for (i = 0; i < rank; i++) {
rank_mask = (rank == 1) ? 0x1 : 0x3;
for (i = 0; i < 4; i++) {
if (!(rank_mask & (1 << i)))
continue;
select_per_cs_training_index(chan, i);
/*