On 2019/7/16 上午2:28, Jagan Teki wrote:
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 <ja...@amarulasolutions.com>
Signed-off-by: YouMin Chen <c...@rock-chips.com>
Reviewed-by: Kever Yang <kever.y...@rock-chips.com>
Thanks,
- Kever
---
drivers/ram/rockchip/sdram_rk3399.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/ram/rockchip/sdram_rk3399.c
b/drivers/ram/rockchip/sdram_rk3399.c
index b98df20fa5..16bd9427a6 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -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);
/*
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