commit 01976ae6f55ecfdf9ace9a453cc16d84585d49d8
author Jagan Teki <jagan@amarulasolutions.com> Mon Jul 15 23:58:40 2019 +0530
committer Kever Yang <kever.yang@rock-chips.com> Fri Jul 19 11:11:09 2019 +0800
tree 1c75589ed4329b413f8052e03dd5c5aff518ad19
parent 02fad6f9eda4165db33710c7c65353babf1d4455

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>

drivers/ram/rockchip/sdram_rk3399.c

diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index e9c0fdf..fe26144 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -627,6 +627,9 @@
 	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 @@
 	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 @@
 	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 @@
 	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 @@
 	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);