Add rank_mask based on the rank number for lpddr4.
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 --- 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 d967a602bc..935e3c495e 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -925,7 +925,10 @@ static int data_training_wdql(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 (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)))