From 708e9a79dc297aeb8a62dc6ba95b651b0493e1e1 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Mon, 15 Jul 2019 23:58:41 +0530 Subject: [PATCH] ram: rk3399: Use rank mask in ca data training 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 Signed-off-by: YouMin Chen Reviewed-by: Kever Yang --- 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 fe26144f27..b98df20fa5 100644 --- a/drivers/ram/rockchip/sdram_rk3399.c +++ b/drivers/ram/rockchip/sdram_rk3399.c @@ -626,11 +626,17 @@ 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 = params->ch[channel].cap_info.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 */ -- 2.34.1