Add rank_mask based on the rank number, this would keep
the ca data training loop based on the desired rank mask
value instead of looping for all values.
Signed-off-by: Jagan Teki <jagan@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: YouMin Chen <cym@xxxxxxxxxxxxxx>
---
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 74392076f0..312d19f95f 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -617,11 +617,17 @@ static int data_training_ca(const struct chan_info *chan, u32 channel,
u32 i, tmp;
u32 obs_0, obs_1, obs_2, obs_err = 0;
u32 rank = sdram_params->ch[channel].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);
/* PI_100 PI_CALVL_EN:RW:8:2 */
--
2.18.0.321.gffc6fa0e3
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