[U-Boot] [PATCH v3 02/18] ram: rk3399: Clear PI_175 interrupts in data training

[Kever Yang]

On 2019/7/16 上午2:28, Jagan Teki wrote:
> 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 at amarulasolutions.com>
> Signed-off-by: YouMin Chen <cym at rock-chips.com>

Reviewed-by: Kever Yang <Kever.yang at rock-chips.com>

Thanks,
  - Kever
> ---
>   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 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);
>