[PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa()

[PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa()

[Kuogee Hsieh]

At current implementation there is an extra 0 at 1.62G link rate which cause
no correct pixel_div selected for 1.62G link rate to calculate mvid and nvid.
This patch delete the extra 0 to have mvid and nvid be calculated correctly.

Changes in v2:
-- fix Fixes tag's text

Changes in v3:
-- fix misspelling of "Reviewed-by"

Fixes: 937f941ca06f  ("drm/msm/dp: Use qmp phy for DP PLL and PHY")
Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>

Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
index 7257515..676279d 100644
--- a/drivers/gpu/drm/msm/dp/dp_catalog.c
+++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
@@ -431,7 +431,7 @@ void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog,
 
 	if (rate == link_rate_hbr3)
 		pixel_div = 6;
-	else if (rate == 1620000 || rate == 270000)
+	else if (rate == 162000 || rate == 270000)
 		pixel_div = 2;
 	else if (rate == link_rate_hbr2)
 		pixel_div = 4;
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

Re: [PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa()

[Doug Anderson]

Hi,

On Wed, Aug 24, 2022 at 1:16 PM Kuogee Hsieh <quic_khsieh@quicinc.com> wrote:
>
> At current implementation there is an extra 0 at 1.62G link rate which cause
> no correct pixel_div selected for 1.62G link rate to calculate mvid and nvid.
> This patch delete the extra 0 to have mvid and nvid be calculated correctly.
>
> Changes in v2:
> -- fix Fixes tag's text
>
> Changes in v3:
> -- fix misspelling of "Reviewed-by"
>
> Fixes: 937f941ca06f  ("drm/msm/dp: Use qmp phy for DP PLL and PHY")
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
>
> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
> ---
>  drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Douglas Anderson <dianders@chromium.org>

Re: [PATCH v3] drm/msm/dp: correct 1.62G link rate at dp_catalog_ctrl_config_msa()

[Dmitry Baryshkov]

On 24/08/2022 23:15, Kuogee Hsieh wrote:
> At current implementation there is an extra 0 at 1.62G link rate which cause
> no correct pixel_div selected for 1.62G link rate to calculate mvid and nvid.
> This patch delete the extra 0 to have mvid and nvid be calculated correctly.
> 
> Changes in v2:
> -- fix Fixes tag's text
> 
> Changes in v3:
> -- fix misspelling of "Reviewed-by"
> 
> Fixes: 937f941ca06f  ("drm/msm/dp: Use qmp phy for DP PLL and PHY")
> Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
> 

No extra empty lines between the tags please. I'll correct this manually 
while applying.

> Reviewed-by: Stephen Boyd <swboyd@chromium.org>
> Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
> ---
>   drivers/gpu/drm/msm/dp/dp_catalog.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/dp/dp_catalog.c b/drivers/gpu/drm/msm/dp/dp_catalog.c
> index 7257515..676279d 100644
> --- a/drivers/gpu/drm/msm/dp/dp_catalog.c
> +++ b/drivers/gpu/drm/msm/dp/dp_catalog.c
> @@ -431,7 +431,7 @@ void dp_catalog_ctrl_config_msa(struct dp_catalog *dp_catalog,
>   
>   	if (rate == link_rate_hbr3)
>   		pixel_div = 6;
> -	else if (rate == 1620000 || rate == 270000)
> +	else if (rate == 162000 || rate == 270000)
>   		pixel_div = 2;
>   	else if (rate == link_rate_hbr2)
>   		pixel_div = 4;

-- 
With best wishes
Dmitry