Hi,
On Mon, 15 Jan 2024 09:55:00 +0100
"H. Nikolaus Schaller" wrote:
> > There's no reason to disable it in the DT: the hardware block would
> > still be there and it's rendering to memory so it still could be useful.
>
> Well, if you know that the board does not have a dm3730 but a dm3725 w
On Tue, 5 Dec 2023 09:45:44 +0100
Krzysztof Kozlowski wrote:
> > Sure the clock nodes can be there for the child IP, but they won't do
> > anything. And still need to be managed separately by the device driver if
> > added.
>
> So if OS does not have runtime PM, the bindings are wrong? Binding
On Tue, 5 Dec 2023 10:27:56 +0100
Krzysztof Kozlowski wrote:
> On 05/12/2023 10:02, Andreas Kemnade wrote:
> > On Tue, 5 Dec 2023 09:45:44 +0100
> > Krzysztof Kozlowski wrote:
> >
> >>> Sure the clock nodes can be there for the child IP, but they won't d
Am Wed, 13 Sep 2023 15:58:11 +0300
schrieb Tomi Valkeinen :
> On 13/09/2023 15:48, Tony Lindgren wrote:
> > * Tomi Valkeinen [230913 12:11]:
> >> I'm somewhat sure that the upstream driver used to work on omap4
> >> sdp, which has two DSI panels. But I can't even remember what
> >> omap4 versio
On Wed, 13 Sep 2023 15:11:08 +0300
Tomi Valkeinen wrote:
> On 13/09/2023 09:59, Andreas Kemnade wrote:
> > Some 3.0 source has it set behind a if (omap4).
> > Maybe it is helpful maybe not, at least in the omap4460
> > trm these bits are marked as reserved.
> > Bu
Some 3.0 source has it set behind a if (omap4).
Maybe it is helpful maybe not, at least in the omap4460
trm these bits are marked as reserved.
But maybe some dsi video mode panel starts magically working.
Signed-off-by: Andreas Kemnade
---
drivers/gpu/drm/omapdrm/dss/dsi.c | 2 +-
1 file
On Wed, 13 Apr 2022 17:19:00 -0500
Samuel Holland wrote:
[...]
> Waveform Selection From Userspace
> =
> EPDs use different waveforms for different purposes: high-quality
> grayscale vs. monochrome text vs. dithered monochrome video. How can
> userspace select whic
On Thu, 14 Apr 2022 22:00:09 -0500
Samuel Holland wrote:
> Hi Andreas,
>
> Thanks for the comments.
>
> On 4/14/22 3:15 AM, Andreas Kemnade wrote:
> > Hi Samuel,
> >
> > for comparison, here is my submission for the IMX EPDC bindings:
> >
>
Hi Samuel,
for comparison, here is my submission for the IMX EPDC bindings:
https://lore.kernel.org/linux-devicetree/20220206080016.796556-2-andr...@kemnade.info/
On Wed, 13 Apr 2022 17:19:02 -0500
Samuel Holland wrote:
[...]
we have sy7636a driver in kernel which should be suitable for poweri
; well-defined timing. VCOM can be handled separately, but can also be
> > incorporated into that single bit.
> >
> > Signed-off-by: Andreas Kemnade
> > ---
> > .../bindings/display/imx/fsl,mxc-epdc.yaml| 159 ++
> > 1 file changed, 159 ins
On Thu, 17 Feb 2022 10:21:15 +0100
Krzysztof Kozlowski wrote:
> On 06/02/2022 09:00, Andreas Kemnade wrote:
> > Add a binding for the Electrophoretic Display Controller found at least
> > in the i.MX6.
> > The timing subnode is directly here to avoid having display parameter
Hi Rob,
On Fri, 11 Feb 2022 09:46:27 -0600
Rob Herring wrote:
> On Sun, Feb 06, 2022 at 09:00:11AM +0100, Andreas Kemnade wrote:
> > Add a binding for the Electrophoretic Display Controller found at least
> > in the i.MX6.
>
> The first version was in i.MX50 (I helpe
for that purpose,
like the TPS65185, the SY7636A and MAX17135 have typically a single bit to
start a bunch of regulators of higher or negative voltage with a
well-defined timing. VCOM can be handled separately, but can also be
incorporated into that single bit.
Signed-off-by: Andreas Kemnade
Extend definition of EPDC.
Signed-off-by: Andreas Kemnade
---
arch/arm/boot/dts/imx6sl.dtsi | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi
index c7d907c5c352..919e86e4fc74 100644
--- a/arch/arm/boot/dts/imx6sl.dtsi
+++ b/arch
Adds display parameter initialisation, display power up/down and
waveform loading
Signed-off-by: Andreas Kemnade
---
drivers/gpu/drm/mxc-epdc/Makefile| 2 +-
drivers/gpu/drm/mxc-epdc/epdc_hw.c | 495 +++
drivers/gpu/drm/mxc-epdc/epdc_hw.h | 8
This driver is for the EPD controller in the i.MX SoCs. Add a skeleton
and basic things for the driver
Signed-off-by: Andreas Kemnade
---
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile| 1 +
drivers/gpu/drm/mxc-epdc/Kconfig| 15 +
drivers
kernel fork uses that
for rotation and mysterious waveform handling. That is not planed to be
upstreamed in the first step.
Also it does not provide any special userspace API to fine-tune updates.
That is also IMHO something for a second step.
Andreas Kemnade (6):
dt-bindings: display: imx: Add
Clara HD, Tolino Shine 3, and Tolino Shine 2HD.
Also the waveform called epdc_E060SCM.fw from NXP BSP works with the
i.MX6SL devices.
Signed-off-by: Andreas Kemnade
---
drivers/gpu/drm/mxc-epdc/Makefile |2 +-
drivers/gpu/drm/mxc-epdc/epdc_hw.c |2 +
drivers/gpu/drm/mxc-epdc
The commercial variant has a controller for e-Paper displays.
Signed-off-by: Andreas Kemnade
---
arch/arm/boot/dts/imx6sll.dtsi | 9 +
1 file changed, 9 insertions(+)
diff --git a/arch/arm/boot/dts/imx6sll.dtsi b/arch/arm/boot/dts/imx6sll.dtsi
index d4a000c3dde7..042e8a391b2f 100644
On Tue, 11 Feb 2020 22:41:24 +0100
"H. Nikolaus Schaller" wrote:
> There is a ACT8600 on the CI20 board and the bindings of the
> ACT8865 driver have changed without updating the CI20 device
> tree. Therefore the PMU can not be probed successfully and
> is running in power-on reset state.
>
> Fi
On Tue, 19 Nov 2019 17:55:57 +0200
Tomi Valkeinen wrote:
> On 19/11/2019 17:06, Tony Lindgren wrote:
>
> >> The userspace apps need to do this. If they're using single-buffering, then
> >> using the dirtyfb ioctl should do the trick, after the SGX has finished
> >> drawing.
> >
> > Sounds lik
Hi,
On Mon, 28 Oct 2019 18:25:56 -0500
Rob Herring wrote:
> On Thu, Sep 12, 2019 at 4:33 PM Andreas Kemnade wrote:
> >
> > add enable-gpios to describe HWEN pin
> >
> > Signed-off-by: Andreas Kemnade
> > Acked-by: Daniel Thompson
>
> This br
example failed to compile due to undefined GPIO_ACTIVE_HIGH
fix that by adding the needed #include to the exammple
Fixes: ae92365cdd75 ("dt-bindings: backlight: lm3630a: Add enable-gpios to
describe HWEN pin")
Signed-off-by: Andreas Kemnade
---
.../devicetree/bindings/leds/backlig
us Schaller
> Signed-off-by: Laurent Pinchart
Tested-by: Andreas Kemnade
> ---
> drivers/gpu/drm/panel/panel-tpo-td028ttec1.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-tpo-td028ttec1.c
> b/drivers/gpu/drm/pan
On Mon, 7 Oct 2019 19:04:46 +0200
Sebastian Reichel wrote:
> Hi,
>
> On Mon, Oct 07, 2019 at 06:41:30PM +0200, Andreas Kemnade wrote:
> > When the panels were moved from omap/displays/ to panel/
> > omapdss prefix was stripped, which cause spi modalias
> > to no
dalias=spi:td028ttec1
This is consistent with other drivers. Tested the td028ttec.c
only, but the pattern looks the same for the other ones.
Fixes: 45f16c82db7e8 ("drm/omap: displays: Remove unused panel drivers")
Signed-off-by: Andreas Kemnade
---
drivers/gpu/drm/panel/panel-lg-lb03
Hi,
hmm, this bugfix has not arrived in -next or any -fixes branch I am
aware of yet. I hope it is not forgotten...
so a friendly ping.
Regards,
Andreas
On Wed, 11 Sep 2019 11:51:48 +0100
Daniel Thompson wrote:
> On Tue, Sep 10, 2019 at 05:23:59PM +0200, Andreas Kemnade wrote:
> > D
Hi,
On Sun, 15 Sep 2019 18:52:04 +0200
Pavel Machek wrote:
> Hi!
>
> > > > > Is this needed?
> > > > >
> > > > > This is a remove path, not a power management path, and we have no
> > > > > idea
> > > > > what the original status of the pin was anyway?
> > > > >
> > > >
> > > > Looking
For now just enable it in the probe function to allow i2c
access. Disabling also means resetting the register values
to default and according to the datasheet does not give
power savings.
Tested on Kobo Clara HD.
Signed-off-by: Andreas Kemnade
Reviewed-by: Dan Murphy
Reviewed-by: Daniel
bindings example
Andreas Kemnade (2):
dt-bindings: backlight: lm3630a: add enable_gpios
backlight: lm3630a: add an enable gpio for the HWEN pin
.../bindings/leds/backlight/lm3630a-backlight.yaml | 5 +
drivers/video/backlight/lm3630a_bl.c | 9 +
2 files
add enable-gpios to describe HWEN pin
Signed-off-by: Andreas Kemnade
Acked-by: Daniel Thompson
---
changes in v2: added example
changes in v3: added Acked-by
changes in v4: moved enable-gpios to the right position
in the example
.../bindings/leds/backlight/lm3630a-backlight.yaml
On Thu, 12 Sep 2019 06:39:50 -0500
Dan Murphy wrote:
> Andreas
>
> On 9/11/19 12:21 PM, Andreas Kemnade wrote:
> > add enable-gpios to describe HWEN pin
> >
> > Signed-off-by: Andreas Kemnade
> > Acked-by: Daniel Thompson
> > ---
> > changes in v2:
On Wed, 11 Sep 2019 13:48:36 -0500
Dan Murphy wrote:
> >> @@ -535,6 +538,13 @@ static int lm3630a_probe(struct i2c_client *client,
> >>}
> >>pchip->pdata = pdata;
> >>
> >> + pchip->enable_gpio = devm_gpiod_get_optional(&client->dev, "enable",
> >> +
For now just enable it in the probe function to allow i2c
access. Disabling also means resetting the register values
to default and according to the datasheet does not give
power savings.
Tested on Kobo Clara HD.
Signed-off-by: Andreas Kemnade
---
changes in v2:
- simplification
- correct gpio
add enable-gpios to describe HWEN pin
Signed-off-by: Andreas Kemnade
Acked-by: Daniel Thompson
---
changes in v2: added example
changes in v3: added Acked-by
.../bindings/leds/backlight/lm3630a-backlight.yaml | 5 +
1 file changed, 5 insertions(+)
diff --git
a/Documentation
To be able to handle the HWEN pin of the lm3630a, add
an enable gpio to the driver and a property.
Tested on Kobo Clara HD.
Changes in v2:
simplification and reordering
Changes in v3:
added acked-by
removed legacy include
Andreas Kemnade (2):
dt-bindings: backlight: lm3630a: add enable_gpios
For now just enable it in the probe function to allow i2c
access. Disabling also means resetting the register values
to default and according to the datasheet does not give
power savings
Tested on Kobo Clara HD.
Signed-off-by: Andreas Kemnade
---
changes in v2:
- simplification
- correct gpio
To be able to handle the HWEN pin of the lm3630a, add
an enable gpio to the driver and a property.
Tested on Kobo Clara HD.
Changes in v2:
simplification and reordering
Andreas Kemnade (2):
dt-bindings: backlight: lm3630a: add enable_gpios
backlight: lm3630a: add an enable gpio for the HWEN
add enable-gpios to describe HWEN pin
Signed-off-by: Andreas Kemnade
---
changes in v2: add example
.../bindings/leds/backlight/lm3630a-backlight.yaml | 5 +
1 file changed, 5 insertions(+)
diff --git
a/Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml
b
On Tue, 10 Sep 2019 11:21:56 +0100
Daniel Thompson wrote:
[...]
> > > Is this needed?
> > >
> > > This is a remove path, not a power management path, and we have no idea
> > > what the original status of the pin was anyway?
> > >
> >
> > Looking at Ishdn on page 5 of the datasheet, switching
Devicetree aliases are missing, so that module autoloading
does not work properly.
Signed-off-by: Andreas Kemnade
---
drivers/video/backlight/lm3630a_bl.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/video/backlight/lm3630a_bl.c
b/drivers/video/backlight
On Mon, 9 Sep 2019 11:57:29 +0100
Daniel Thompson wrote:
> On Sun, Sep 08, 2019 at 10:37:03PM +0200, Andreas Kemnade wrote:
> > For now just enable it in the probe function to allow i2c
> > access and disable it on remove. Disabling also means resetting
> > the regis
To be able to handle the HWEN pin of the lm3630a, add
an enable gpio to the driver and a property.
Tested on Kobo Clara HD
Andreas Kemnade (2):
backlight: lm3630a: add an enable gpio for the HWEN pin
dt-bindings: backlight: lm3630a: add enable_gpios
.../leds/backlight/lm3630a
add enable-gpios to describe HWEN pin
Signed-off-by: Andreas Kemnade
---
.../devicetree/bindings/leds/backlight/lm3630a-backlight.yaml | 4
1 file changed, 4 insertions(+)
diff --git
a/Documentation/devicetree/bindings/leds/backlight/lm3630a-backlight.yaml
b/Documentation/devicetree
For now just enable it in the probe function to allow i2c
access and disable it on remove. Disabling also means resetting
the register values to default.
Tested on Kobo Clara HD.
Signed-off-by: Andreas Kemnade
---
drivers/video/backlight/lm3630a_bl.c | 18 ++
1 file changed, 18
Hi,
On Fri, 8 Feb 2019 11:13:33 +0200
Tomi Valkeinen wrote:
> On 05/02/2019 08:38, Andreas Kemnade wrote:
> > This panel has a backlight, so add a property describing that and
> > add the code to use that.
> > This makes things like xset dpms force off
> > also turn
This adds an additional backlight property as described
in panel-common.txt
Signed-off-by: Andreas Kemnade
---
Documentation/devicetree/bindings/display/panel/tpo,td028ttec1.txt | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/panel/tpo,td028ttec1
-by: Andreas Kemnade
---
Changes in v2:
- do not reorder initialisation
- fix commit message
drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c
b/drivers/gpu/drm/omapdrm
This panel has a backlight, so add a property describing that and
add the code to use that.
This makes things like xset dpms force off
also turn off the backlight, so we do not need to rely on additional
userspace programs to do that.
Andreas Kemnade (2):
drm/omap: panel-tpo-td028ttec1: add
Hi,
On Mon, 4 Feb 2019 10:13:46 +0200
Tomi Valkeinen wrote:
> Hi,
>
> On 19/01/2019 20:21, Andreas Kemnade wrote:
> > This panel has a backlight, so fetch it from devicetree using the
> > as documented in panel-common.txt. It is implemented the same way as in
>
>
ping
On Sat, 19 Jan 2019 19:21:29 +0100
Andreas Kemnade wrote:
> This panel has a backlight, so add a property describing that and
> add the code to use that.
> This makes things like xset dpms force off
> also turn off the backlight, so we do not need to rely on additional
> use
This panel has a backlight, so fetch it from devicetree using the
as documented in panel-common.txt. It is implemented the same way as in
panel-dpi.c
This ensures the backlight is also disabled when the display is
turned off like when doing xset dpms force off.
Signed-off-by: Andreas Kemnade
This panel has a backlight, so add a property describing that and
add the code to use that.
This makes things like xset dpms force off
also turn off the backlight, so we do not need to rely on additional
userspace programs to do that.
Andreas Kemnade (2):
drm/omap: panel-tpo-td028ttec1: add
This add an additional backlight property as described
in panel-common.txt
Signed-off-by: Andreas Kemnade
---
Documentation/devicetree/bindings/display/panel/tpo,td028ttec1.txt | 2 ++
1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/display/panel/tpo,td028ttec1
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