[U-Boot] [PATCH v2 08/99] ram: rk3399: Clear PI_175 interrupts in data training

[Jagan Teki]

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 <ja...@amarulasolutions.com>
Signed-off-by: YouMin Chen <c...@rock-chips.com>
---
 drivers/ram/rockchip/sdram_rk3399.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/ram/rockchip/sdram_rk3399.c 
b/drivers/ram/rockchip/sdram_rk3399.c
index 20a3e89c17..1898466b4c 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -617,6 +617,9 @@ 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].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);
 
@@ -671,6 +674,9 @@ 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].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);
 
@@ -730,6 +736,9 @@ 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].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);
 
@@ -789,6 +798,9 @@ static int data_training_rl(const struct chan_info *chan, 
u32 channel,
        u32 i, tmp;
        u32 rank = params->ch[channel].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);
 
@@ -834,6 +846,9 @@ static int data_training_wdql(const struct chan_info *chan, 
u32 channel,
        u32 i, tmp;
        u32 rank = params->ch[channel].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);
 
-- 
2.18.0.321.gffc6fa0e3

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