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@amarulasolutions.com Signed-off-by: YouMin Chen cym@rock-chips.com --- 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 */