* [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS
@ 2021-11-10 22:00 Jiri Vanek
2021-11-18 14:50 ` Robert Foss
2022-01-06 19:00 ` [PATCH v2] " Jiri Vanek
0 siblings, 2 replies; 8+ messages in thread
From: Jiri Vanek @ 2021-11-10 22:00 UTC (permalink / raw)
To: Andrzej Hajda, Neil Armstrong, Robert Foss
Cc: Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, dri-devel, linux-kernel, Jiri Vanek
Fixed wrong register shift for single/dual link LVDS output.
Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
---
drivers/gpu/drm/bridge/tc358775.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index 2272adcc5b4a..1d6ec1baeff2 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
}
#define TC358775_LVCFG_LVDLINK__MASK 0x00000002
-#define TC358775_LVCFG_LVDLINK__SHIFT 0
+#define TC358775_LVCFG_LVDLINK__SHIFT 1
static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
{
return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS
2021-11-10 22:00 [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS Jiri Vanek
@ 2021-11-18 14:50 ` Robert Foss
[not found] ` <CAGWqDJ5ZKJ0skLnhfhC0cbzNnSo7HLY7Cqr2ZhOcb_YiHNsA1A@mail.gmail.com>
2022-01-06 19:00 ` [PATCH v2] " Jiri Vanek
1 sibling, 1 reply; 8+ messages in thread
From: Robert Foss @ 2021-11-18 14:50 UTC (permalink / raw)
To: Jiri Vanek, Zheng Bin, Vinay Simha BN
Cc: Andrzej Hajda, Neil Armstrong, Laurent Pinchart, Jonas Karlman,
Jernej Skrabec, David Airlie, Daniel Vetter, dri-devel,
linux-kernel
+ Zhen & Vinay
This patch looks good in itself, but I would like to see a tested by
tag. At the very least testing for regression in single-link LVDS but
ideally some third party verification of this patch.
On Wed, 10 Nov 2021 at 23:01, Jiri Vanek <jirivanek1@gmail.com> wrote:
>
> Fixed wrong register shift for single/dual link LVDS output.
>
> Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
> ---
> drivers/gpu/drm/bridge/tc358775.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
> index 2272adcc5b4a..1d6ec1baeff2 100644
> --- a/drivers/gpu/drm/bridge/tc358775.c
> +++ b/drivers/gpu/drm/bridge/tc358775.c
> @@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
> }
>
> #define TC358775_LVCFG_LVDLINK__MASK 0x00000002
> -#define TC358775_LVCFG_LVDLINK__SHIFT 0
> +#define TC358775_LVCFG_LVDLINK__SHIFT 1
> static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
> {
> return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
> --
> 2.30.2
>
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS
[not found] ` <CAGWqDJ5ZKJ0skLnhfhC0cbzNnSo7HLY7Cqr2ZhOcb_YiHNsA1A@mail.gmail.com>
@ 2022-01-04 13:50 ` Robert Foss
2022-01-04 16:56 ` Vinay Simha B N
[not found] ` <CAECvnWLivbpHQc1Qu0NowXFhSHgQModwcwG0=zviqmGPxnjUHg@mail.gmail.com>
0 siblings, 2 replies; 8+ messages in thread
From: Robert Foss @ 2022-01-04 13:50 UTC (permalink / raw)
To: Vinay Simha B N
Cc: Jiri Vanek, Zheng Bin, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, open list:DRM PANEL DRIVERS, open list
Jiri: Are you able to test this patch?
Vinay: Could you supply a R-b tag, if you feel that it is warranted?
On Tue, 14 Dec 2021 at 09:13, Vinay Simha B N <simhavcs@gmail.com> wrote:
>
> Robert,
> I do not have the hardware to test this feature. Sorry for the late response.
>
> On Thu, Nov 18, 2021 at 8:20 PM Robert Foss <robert.foss@linaro.org> wrote:
>>
>> + Zhen & Vinay
>>
>> This patch looks good in itself, but I would like to see a tested by
>> tag. At the very least testing for regression in single-link LVDS but
>> ideally some third party verification of this patch.
>>
>> On Wed, 10 Nov 2021 at 23:01, Jiri Vanek <jirivanek1@gmail.com> wrote:
>> >
>> > Fixed wrong register shift for single/dual link LVDS output.
>> >
>> > Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
>> > ---
>> > drivers/gpu/drm/bridge/tc358775.c | 2 +-
>> > 1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
>> > index 2272adcc5b4a..1d6ec1baeff2 100644
>> > --- a/drivers/gpu/drm/bridge/tc358775.c
>> > +++ b/drivers/gpu/drm/bridge/tc358775.c
>> > @@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
>> > }
>> >
>> > #define TC358775_LVCFG_LVDLINK__MASK 0x00000002
>> > -#define TC358775_LVCFG_LVDLINK__SHIFT 0
>> > +#define TC358775_LVCFG_LVDLINK__SHIFT 1
>> > static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
>> > {
>> > return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
>> > --
>> > 2.30.2
>> >
>
>
>
> --
> regards,
> vinaysimha
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS
[not found] ` <CAECvnWLivbpHQc1Qu0NowXFhSHgQModwcwG0=zviqmGPxnjUHg@mail.gmail.com>
@ 2022-01-04 14:36 ` Robert Foss
2022-01-04 17:04 ` Vinay Simha B N
1 sibling, 0 replies; 8+ messages in thread
From: Robert Foss @ 2022-01-04 14:36 UTC (permalink / raw)
To: Jiří Vaněk
Cc: Vinay Simha B N, Zheng Bin, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, open list:DRM PANEL DRIVERS, open list
Excellent.
Jiri, can you add your Tested-by tag to this patch?
On Tue, 4 Jan 2022 at 15:29, Jiří Vaněk <jirivanek1@gmail.com> wrote:
>
> Actually, this patch is based on testing with a real HW with dual-link LVDS display (full HD) and it also matches with a datasheet. Without this fix it does not work at all.
>
> út 4. 1. 2022 v 14:51 odesílatel Robert Foss <robert.foss@linaro.org> napsal:
>>
>> Jiri: Are you able to test this patch?
>>
>> Vinay: Could you supply a R-b tag, if you feel that it is warranted?
>>
>> On Tue, 14 Dec 2021 at 09:13, Vinay Simha B N <simhavcs@gmail.com> wrote:
>> >
>> > Robert,
>> > I do not have the hardware to test this feature. Sorry for the late response.
>> >
>> > On Thu, Nov 18, 2021 at 8:20 PM Robert Foss <robert.foss@linaro.org> wrote:
>> >>
>> >> + Zhen & Vinay
>> >>
>> >> This patch looks good in itself, but I would like to see a tested by
>> >> tag. At the very least testing for regression in single-link LVDS but
>> >> ideally some third party verification of this patch.
>> >>
>> >> On Wed, 10 Nov 2021 at 23:01, Jiri Vanek <jirivanek1@gmail.com> wrote:
>> >> >
>> >> > Fixed wrong register shift for single/dual link LVDS output.
>> >> >
>> >> > Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
>> >> > ---
>> >> > drivers/gpu/drm/bridge/tc358775.c | 2 +-
>> >> > 1 file changed, 1 insertion(+), 1 deletion(-)
>> >> >
>> >> > diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
>> >> > index 2272adcc5b4a..1d6ec1baeff2 100644
>> >> > --- a/drivers/gpu/drm/bridge/tc358775.c
>> >> > +++ b/drivers/gpu/drm/bridge/tc358775.c
>> >> > @@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
>> >> > }
>> >> >
>> >> > #define TC358775_LVCFG_LVDLINK__MASK 0x00000002
>> >> > -#define TC358775_LVCFG_LVDLINK__SHIFT 0
>> >> > +#define TC358775_LVCFG_LVDLINK__SHIFT 1
>> >> > static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
>> >> > {
>> >> > return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
>> >> > --
>> >> > 2.30.2
>> >> >
>> >
>> >
>> >
>> > --
>> > regards,
>> > vinaysimha
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS
2022-01-04 13:50 ` Robert Foss
@ 2022-01-04 16:56 ` Vinay Simha B N
[not found] ` <CAECvnWLivbpHQc1Qu0NowXFhSHgQModwcwG0=zviqmGPxnjUHg@mail.gmail.com>
1 sibling, 0 replies; 8+ messages in thread
From: Vinay Simha B N @ 2022-01-04 16:56 UTC (permalink / raw)
To: Robert Foss
Cc: Jiri Vanek, Zheng Bin, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, open list:DRM PANEL DRIVERS, open list
Robert,
What is R-b tag?
On Tue, Jan 4, 2022 at 7:21 PM Robert Foss <robert.foss@linaro.org> wrote:
>
> Jiri: Are you able to test this patch?
>
> Vinay: Could you supply a R-b tag, if you feel that it is warranted?
>
> On Tue, 14 Dec 2021 at 09:13, Vinay Simha B N <simhavcs@gmail.com> wrote:
> >
> > Robert,
> > I do not have the hardware to test this feature. Sorry for the late response.
> >
> > On Thu, Nov 18, 2021 at 8:20 PM Robert Foss <robert.foss@linaro.org> wrote:
> >>
> >> + Zhen & Vinay
> >>
> >> This patch looks good in itself, but I would like to see a tested by
> >> tag. At the very least testing for regression in single-link LVDS but
> >> ideally some third party verification of this patch.
> >>
> >> On Wed, 10 Nov 2021 at 23:01, Jiri Vanek <jirivanek1@gmail.com> wrote:
> >> >
> >> > Fixed wrong register shift for single/dual link LVDS output.
> >> >
> >> > Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
> >> > ---
> >> > drivers/gpu/drm/bridge/tc358775.c | 2 +-
> >> > 1 file changed, 1 insertion(+), 1 deletion(-)
> >> >
> >> > diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
> >> > index 2272adcc5b4a..1d6ec1baeff2 100644
> >> > --- a/drivers/gpu/drm/bridge/tc358775.c
> >> > +++ b/drivers/gpu/drm/bridge/tc358775.c
> >> > @@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
> >> > }
> >> >
> >> > #define TC358775_LVCFG_LVDLINK__MASK 0x00000002
> >> > -#define TC358775_LVCFG_LVDLINK__SHIFT 0
> >> > +#define TC358775_LVCFG_LVDLINK__SHIFT 1
> >> > static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
> >> > {
> >> > return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
> >> > --
> >> > 2.30.2
> >> >
> >
> >
> >
> > --
> > regards,
> > vinaysimha
--
regards,
vinaysimha
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS
[not found] ` <CAECvnWLivbpHQc1Qu0NowXFhSHgQModwcwG0=zviqmGPxnjUHg@mail.gmail.com>
2022-01-04 14:36 ` Robert Foss
@ 2022-01-04 17:04 ` Vinay Simha B N
1 sibling, 0 replies; 8+ messages in thread
From: Vinay Simha B N @ 2022-01-04 17:04 UTC (permalink / raw)
To: Jiří Vaněk
Cc: Robert Foss, Zheng Bin, Andrzej Hajda, Neil Armstrong,
Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, open list:DRM PANEL DRIVERS, open list
Jiri Vanek,
Could you please share the part number or datasheet of the dual-link
LVDS display used.
On Tue, Jan 4, 2022 at 7:59 PM Jiří Vaněk <jirivanek1@gmail.com> wrote:
>
> Actually, this patch is based on testing with a real HW with dual-link LVDS display (full HD) and it also matches with a datasheet. Without this fix it does not work at all.
>
> út 4. 1. 2022 v 14:51 odesílatel Robert Foss <robert.foss@linaro.org> napsal:
>>
>> Jiri: Are you able to test this patch?
>>
>> Vinay: Could you supply a R-b tag, if you feel that it is warranted?
>>
>> On Tue, 14 Dec 2021 at 09:13, Vinay Simha B N <simhavcs@gmail.com> wrote:
>> >
>> > Robert,
>> > I do not have the hardware to test this feature. Sorry for the late response.
>> >
>> > On Thu, Nov 18, 2021 at 8:20 PM Robert Foss <robert.foss@linaro.org> wrote:
>> >>
>> >> + Zhen & Vinay
>> >>
>> >> This patch looks good in itself, but I would like to see a tested by
>> >> tag. At the very least testing for regression in single-link LVDS but
>> >> ideally some third party verification of this patch.
>> >>
>> >> On Wed, 10 Nov 2021 at 23:01, Jiri Vanek <jirivanek1@gmail.com> wrote:
>> >> >
>> >> > Fixed wrong register shift for single/dual link LVDS output.
>> >> >
>> >> > Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
>> >> > ---
>> >> > drivers/gpu/drm/bridge/tc358775.c | 2 +-
>> >> > 1 file changed, 1 insertion(+), 1 deletion(-)
>> >> >
>> >> > diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
>> >> > index 2272adcc5b4a..1d6ec1baeff2 100644
>> >> > --- a/drivers/gpu/drm/bridge/tc358775.c
>> >> > +++ b/drivers/gpu/drm/bridge/tc358775.c
>> >> > @@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
>> >> > }
>> >> >
>> >> > #define TC358775_LVCFG_LVDLINK__MASK 0x00000002
>> >> > -#define TC358775_LVCFG_LVDLINK__SHIFT 0
>> >> > +#define TC358775_LVCFG_LVDLINK__SHIFT 1
>> >> > static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
>> >> > {
>> >> > return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
>> >> > --
>> >> > 2.30.2
>> >> >
>> >
>> >
>> >
>> > --
>> > regards,
>> > vinaysimha
--
regards,
vinaysimha
^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2] drm/bridge/tc358775: Fix for dual-link LVDS
2021-11-10 22:00 [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS Jiri Vanek
2021-11-18 14:50 ` Robert Foss
@ 2022-01-06 19:00 ` Jiri Vanek
[not found] ` <CAGWqDJ6T6EGNjoc2qfNHLMdcuwcnJArF7a7sToRXJ90Zs57E_A@mail.gmail.com>
1 sibling, 1 reply; 8+ messages in thread
From: Jiri Vanek @ 2022-01-06 19:00 UTC (permalink / raw)
To: Andrzej Hajda, Neil Armstrong, Robert Foss
Cc: Laurent Pinchart, Jonas Karlman, Jernej Skrabec, David Airlie,
Daniel Vetter, dri-devel, linux-kernel, Vinay Simha B N,
Jiri Vanek
Fixed wrong register shift for single/dual link LVDS output.
Tested-by: Jiri Vanek <jirivanek1@gmail.com>
Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
---
v1:
* Initial version
v2:
* Tested-by tag added
---
drivers/gpu/drm/bridge/tc358775.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
index 2272adcc5b4a..1d6ec1baeff2 100644
--- a/drivers/gpu/drm/bridge/tc358775.c
+++ b/drivers/gpu/drm/bridge/tc358775.c
@@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
}
#define TC358775_LVCFG_LVDLINK__MASK 0x00000002
-#define TC358775_LVCFG_LVDLINK__SHIFT 0
+#define TC358775_LVCFG_LVDLINK__SHIFT 1
static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
{
return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
--
2.30.2
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [PATCH v2] drm/bridge/tc358775: Fix for dual-link LVDS
[not found] ` <CAGWqDJ6T6EGNjoc2qfNHLMdcuwcnJArF7a7sToRXJ90Zs57E_A@mail.gmail.com>
@ 2022-01-07 16:39 ` Robert Foss
0 siblings, 0 replies; 8+ messages in thread
From: Robert Foss @ 2022-01-07 16:39 UTC (permalink / raw)
To: Vinay Simha B N
Cc: Jiri Vanek, Andrzej Hajda, Neil Armstrong, Laurent Pinchart,
Jonas Karlman, Jernej Skrabec, David Airlie, Daniel Vetter,
open list:DRM PANEL DRIVERS, open list
On Thu, 6 Jan 2022 at 20:22, Vinay Simha B N <simhavcs@gmail.com> wrote:
>
> Reviewed-by: Vinay Simha BN <simhavcs@gmail.com>
>
> Jiri Vanek,
> Could you please share the part number or datasheet of the dual-link LVDS display/panel used.
>
>
> On Fri, Jan 7, 2022 at 12:30 AM Jiri Vanek <jirivanek1@gmail.com> wrote:
>>
>> Fixed wrong register shift for single/dual link LVDS output.
>>
>> Tested-by: Jiri Vanek <jirivanek1@gmail.com>
>> Signed-off-by: Jiri Vanek <jirivanek1@gmail.com>
>>
>> ---
>> v1:
>> * Initial version
>>
>> v2:
>> * Tested-by tag added
>>
>> ---
>> drivers/gpu/drm/bridge/tc358775.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c
>> index 2272adcc5b4a..1d6ec1baeff2 100644
>> --- a/drivers/gpu/drm/bridge/tc358775.c
>> +++ b/drivers/gpu/drm/bridge/tc358775.c
>> @@ -241,7 +241,7 @@ static inline u32 TC358775_LVCFG_PCLKDIV(uint32_t val)
>> }
>>
>> #define TC358775_LVCFG_LVDLINK__MASK 0x00000002
>> -#define TC358775_LVCFG_LVDLINK__SHIFT 0
>> +#define TC358775_LVCFG_LVDLINK__SHIFT 1
>> static inline u32 TC358775_LVCFG_LVDLINK(uint32_t val)
>> {
>> return ((val) << TC358775_LVCFG_LVDLINK__SHIFT) &
>> --
Applied to drm-misc-next
^ permalink raw reply [flat|nested] 8+ messages in thread
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Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
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2021-11-10 22:00 [PATCH] drm/bridge/tc358775: Fix for dual-link LVDS Jiri Vanek
2021-11-18 14:50 ` Robert Foss
[not found] ` <CAGWqDJ5ZKJ0skLnhfhC0cbzNnSo7HLY7Cqr2ZhOcb_YiHNsA1A@mail.gmail.com>
2022-01-04 13:50 ` Robert Foss
2022-01-04 16:56 ` Vinay Simha B N
[not found] ` <CAECvnWLivbpHQc1Qu0NowXFhSHgQModwcwG0=zviqmGPxnjUHg@mail.gmail.com>
2022-01-04 14:36 ` Robert Foss
2022-01-04 17:04 ` Vinay Simha B N
2022-01-06 19:00 ` [PATCH v2] " Jiri Vanek
[not found] ` <CAGWqDJ6T6EGNjoc2qfNHLMdcuwcnJArF7a7sToRXJ90Zs57E_A@mail.gmail.com>
2022-01-07 16:39 ` Robert Foss
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