From: Jagan Teki <jagan@amarulasolutions.com>
Date: Mon, 15 Jul 2019 18:28:40 +0000 (+0530)
Subject: ram: rk3399: Clear PI_175 interrupts in data training
X-Git-Tag: v2019.10-rc1~20^2~117
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=01976ae6f55ecfdf9ace9a453cc16d84585d49d8;p=oweals%2Fu-boot.git

ram: rk3399: Clear PI_175 interrupts in data training

Clear the PI_175 interrupts before processing actual
data training in all relevant calls.

This would help to clear interrupt from previous training.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: YouMin Chen <cym@rock-chips.com>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
---

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index e9c0fdf2d4..fe26144f27 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -627,6 +627,9 @@ static int data_training_ca(const struct chan_info *chan, u32 channel,
 	u32 obs_0, obs_1, obs_2, obs_err = 0;
 	u32 rank = params->ch[channel].cap_info.rank;
 
+	/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+	writel(0x00003f7c, (&denali_pi[175]));
+
 	for (i = 0; i < rank; i++) {
 		select_per_cs_training_index(chan, i);
 
@@ -681,6 +684,9 @@ static int data_training_wl(const struct chan_info *chan, u32 channel,
 	u32 obs_0, obs_1, obs_2, obs_3, obs_err = 0;
 	u32 rank = params->ch[channel].cap_info.rank;
 
+	/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+	writel(0x00003f7c, (&denali_pi[175]));
+
 	for (i = 0; i < rank; i++) {
 		select_per_cs_training_index(chan, i);
 
@@ -740,6 +746,9 @@ static int data_training_rg(const struct chan_info *chan, u32 channel,
 	u32 obs_0, obs_1, obs_2, obs_3, obs_err = 0;
 	u32 rank = params->ch[channel].cap_info.rank;
 
+	/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+	writel(0x00003f7c, (&denali_pi[175]));
+
 	for (i = 0; i < rank; i++) {
 		select_per_cs_training_index(chan, i);
 
@@ -799,6 +808,9 @@ static int data_training_rl(const struct chan_info *chan, u32 channel,
 	u32 i, tmp;
 	u32 rank = params->ch[channel].cap_info.rank;
 
+	/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+	writel(0x00003f7c, (&denali_pi[175]));
+
 	for (i = 0; i < rank; i++) {
 		select_per_cs_training_index(chan, i);
 
@@ -844,6 +856,9 @@ static int data_training_wdql(const struct chan_info *chan, u32 channel,
 	u32 i, tmp;
 	u32 rank = params->ch[channel].cap_info.rank;
 
+	/* clear interrupt,PI_175 PI_INT_ACK:WR:0:17 */
+	writel(0x00003f7c, (&denali_pi[175]));
+
 	for (i = 0; i < rank; i++) {
 		select_per_cs_training_index(chan, i);