[PATCH 07/92] ram: rk3399: Clear PI_175 interrupts in data training

Jagan Teki
2019-06-11T14:50:10Z

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-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Signed-off-by: YouMin Chen <cym-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
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 52633166c1..74392076f0 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -618,6 +618,9 @@ static int data_training_ca(const struct chan_info *chan, u32 channel,
u32 obs_0, obs_1, obs_2, obs_err = 0;
u32 rank = sdram_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);

@@ -672,6 +675,9 @@ 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 = sdram_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);

@@ -731,6 +737,9 @@ 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 = sdram_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);

@@ -790,6 +799,9 @@ static int data_training_rl(const struct chan_info *chan, u32 channel,
u32 i, tmp;
u32 rank = sdram_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);

@@ -835,6 +847,9 @@ static int data_training_wdql(const struct chan_info *chan, u32 channel,
u32 i, tmp;
u32 rank = sdram_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