From 3dae87da89e4c9edb4da9e05bde2e10bb98bd885 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Tue, 16 Jul 2019 17:27:09 +0530 Subject: [PATCH] ram: rk3399: Add lpddr4 rank mask for ca training 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 Signed-off-by: YouMin Chen Reviewed-by: Kever Yang --- 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 cca809a..b7cad92 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -687,7 +687,10 @@ 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 (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))) -- 2.7.4