[PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs

public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed

* [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs
@ 2019-02-20  7:52 ` Jonas Karlman
  2019-02-22 12:28   ` Laurent Pinchart
                     ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Jonas Karlman @ 2019-02-20  7:52 UTC (permalink / raw)
  To: dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org
  Cc: Archit Taneja, Andrzej Hajda, Laurent Pinchart, David Airlie,
	Daniel Vetter, Sean Paul, Neil Armstrong, Heiko Stuebner,
	linux-kernel@vger.kernel.org, Jonas Karlman

The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
also been identified as needing this workaround with a single iteration.

Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
---
 drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 64c3cf027518..14223c0ee784 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1655,6 +1655,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
 	 * iteration for others.
 	 * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
 	 * the workaround with a single iteration.
+	 * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
+	 * been identified as needing the workaround with a single iteration.
 	 */
 
 	switch (hdmi->version) {
@@ -1663,7 +1665,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
 		break;
 	case 0x131a:
 	case 0x132a:
+	case 0x200a:
 	case 0x201a:
+	case 0x211a:
 	case 0x212a:
 		count = 1;
 		break;
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

* Re: [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs
  2019-02-20  7:52 ` [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs Jonas Karlman
@ 2019-02-22 12:28   ` Laurent Pinchart
  2019-03-30  9:24   ` Heiko Stuebner
  2019-04-12  6:26   ` Andrzej Hajda
  2 siblings, 0 replies; 4+ messages in thread
From: Laurent Pinchart @ 2019-02-22 12:28 UTC (permalink / raw)
  To: Jonas Karlman
  Cc: dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org, Archit Taneja, Andrzej Hajda,
	David Airlie, Daniel Vetter, Sean Paul, Neil Armstrong,
	Heiko Stuebner, linux-kernel@vger.kernel.org

Hi Jonas,

Thank you for the patch.

On Wed, Feb 20, 2019 at 07:52:31AM +0000, Jonas Karlman wrote:
> The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> also been identified as needing this workaround with a single iteration.
> 
> Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>

This makes me wonder if we have any device at all that doesn't need the
workaround... The HDMI encoder in R-Car SoCs doesn't seem to require it,
but it reports the same version number as on other SoCs that require the
workaround, and enabling it doesn't seem to affect R-Car adversely.
Should we thus enable it unconditionally ? Input from Synopsys would be
useful.

> ---
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 64c3cf027518..14223c0ee784 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -1655,6 +1655,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
>  	 * iteration for others.
>  	 * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
>  	 * the workaround with a single iteration.
> +	 * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> +	 * been identified as needing the workaround with a single iteration.
>  	 */
>  
>  	switch (hdmi->version) {
> @@ -1663,7 +1665,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
>  		break;
>  	case 0x131a:
>  	case 0x132a:
> +	case 0x200a:
>  	case 0x201a:
> +	case 0x211a:
>  	case 0x212a:
>  		count = 1;
>  		break;

-- 
Regards,

Laurent Pinchart

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs
  2019-02-20  7:52 ` [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs Jonas Karlman
  2019-02-22 12:28   ` Laurent Pinchart
@ 2019-03-30  9:24   ` Heiko Stuebner
  2019-04-12  6:26   ` Andrzej Hajda
  2 siblings, 0 replies; 4+ messages in thread
From: Heiko Stuebner @ 2019-03-30  9:24 UTC (permalink / raw)
  To: Jonas Karlman
  Cc: dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org, Archit Taneja, Andrzej Hajda,
	Laurent Pinchart, David Airlie, Daniel Vetter, Sean Paul,
	Neil Armstrong, linux-kernel@vger.kernel.org

Am Mittwoch, 20. Februar 2019, 08:52:31 CET schrieb Jonas Karlman:
> The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> also been identified as needing this workaround with a single iteration.
> 
> Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>

On rk3328 and rk3288
Tested-by: Heiko Stueber <heiko@sntech.de>

If I remember correctly, this should remove the pink line that shows up
sometimes. With this patch I couldn't see it anymore during multiple
reboots.

Heiko

> ---
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 64c3cf027518..14223c0ee784 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -1655,6 +1655,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
>  	 * iteration for others.
>  	 * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
>  	 * the workaround with a single iteration.
> +	 * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> +	 * been identified as needing the workaround with a single iteration.
>  	 */
>  
>  	switch (hdmi->version) {
> @@ -1663,7 +1665,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
>  		break;
>  	case 0x131a:
>  	case 0x132a:
> +	case 0x200a:
>  	case 0x201a:
> +	case 0x211a:
>  	case 0x212a:
>  		count = 1;
>  		break;
> 





^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs
  2019-02-20  7:52 ` [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs Jonas Karlman
  2019-02-22 12:28   ` Laurent Pinchart
  2019-03-30  9:24   ` Heiko Stuebner
@ 2019-04-12  6:26   ` Andrzej Hajda
  2 siblings, 0 replies; 4+ messages in thread
From: Andrzej Hajda @ 2019-04-12  6:26 UTC (permalink / raw)
  To: Jonas Karlman, dri-devel@lists.freedesktop.org,
	linux-rockchip@lists.infradead.org
  Cc: Archit Taneja, Laurent Pinchart, David Airlie, Daniel Vetter,
	Sean Paul, Neil Armstrong, Heiko Stuebner,
	linux-kernel@vger.kernel.org

On 20.02.2019 08:52, Jonas Karlman wrote:
> The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> also been identified as needing this workaround with a single iteration.
>
> Fixes: be41fc55f1aa ("drm: bridge: dw-hdmi: Handle overflow workaround based on device version")
> Signed-off-by: Jonas Karlman <jonas@kwiboo.se>


Queued to drm-misc-fixes.

--
Regards
Andrzej


> ---
>  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> index 64c3cf027518..14223c0ee784 100644
> --- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> +++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
> @@ -1655,6 +1655,8 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
>  	 * iteration for others.
>  	 * The Amlogic Meson GX SoCs (v2.01a) have been identified as needing
>  	 * the workaround with a single iteration.
> +	 * The Rockchip RK3288 SoC (v2.00a) and RK3328/RK3399 SoCs (v2.11a) have
> +	 * been identified as needing the workaround with a single iteration.
>  	 */
>  
>  	switch (hdmi->version) {
> @@ -1663,7 +1665,9 @@ static void dw_hdmi_clear_overflow(struct dw_hdmi *hdmi)
>  		break;
>  	case 0x131a:
>  	case 0x132a:
> +	case 0x200a:
>  	case 0x201a:
> +	case 0x211a:
>  	case 0x212a:
>  		count = 1;
>  		break;



^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2019-04-12  6:26 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
     [not found] <CGME20190220075334epcas3p16f66503f11d0bacdcf316b232f441fd0@epcas3p1.samsung.com>
2019-02-20  7:52 ` [PATCH] drm: bridge: dw-hdmi: Fix overflow workaround for Rockchip SoCs Jonas Karlman
2019-02-22 12:28   ` Laurent Pinchart
2019-03-30  9:24   ` Heiko Stuebner
2019-04-12  6:26   ` Andrzej Hajda

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox