[U-Boot] [PATCH 58/92] ram: rk3399: Add lpddr4 rank mask for cs training

[Jagan Teki]

Add rank_mask based on the rank number for lpddr4.

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 at amarulasolutions.com>
Signed-off-by: YouMin Chen <cym at rock-chips.com>
---
 drivers/ram/rockchip/sdram_rk3399.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index a5fa41e498..004a4819ff 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -692,7 +692,10 @@ static int data_training_ca(const struct chan_info *chan, u32 channel,
 	/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
 	writel(0x00003f7c, (&denali_pi[175]));
 
-	rank_mask = (rank == 1) ? 0x1 : 0x3;
+	if (sdram_params->base.dramtype == LPDDR4)
+		rank_mask = (rank == 1) ? 0x5 : 0xf;
+	else
+		rank_mask = (rank == 1) ? 0x1 : 0x3;
 
 	for (i = 0; i < 4; i++) {
 		if (!(rank_mask & (1 << i)))
-- 
2.18.0.321.gffc6fa0e3