* graph connection to node is not bidirectional kernel-5.6.0-rc6
@ 2020-03-19 7:31 Vinay Simha B N
2020-03-19 15:46 ` Rob Herring
0 siblings, 1 reply; 6+ messages in thread
From: Vinay Simha B N @ 2020-03-19 7:31 UTC (permalink / raw)
To: open list:DRM DRIVER FOR MSM ADRENO GPU,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list, Andrzej Hajda, Laurent Pinchart
hi,
I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
warning in compilation, built boot image works on qcom apq8016-ifc6309
board with the dsi->bridge->lvds panel.
Because of this warning i cannot create a .yaml documentation examples.
Please suggest.
tc_bridge: bridge@f {
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
d2l_in: endpoint {
remote-endpoint = <&dsi0_out>;
};
};
};
dsi@1a98000 {
status = "okay";
...
ports {
port@1 {
dsi0_out:endpoint {
remote-endpoint = <&d2l_in>;
data-lanes = <0 1 2 3>;
};
};
};
};
https://github.com/vinaysimhabn/kernel-msm/blob/1cbd104cca4ebfb111c92e939ca09f82aac00aa1/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
https://github.com/vinaysimhabn/kernel-msm/blob/08e4821646b5c128559c506a5777d8782f1ff79e/Documentation/devicetree/bindings/display/bridge/toshiba%2Ctc358775.yaml
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
(graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
graph connection to node
'/soc/mdss@1a00000/dsi@1a98000/ports/port@1/endpoint' is not
bidirectional
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:333.53-335.35: Warning
(graph_endpoint): /soc/auo,b101xtn01/port/endpoint: graph connection
to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
bidirectional
--
regards,
vinaysimha
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: graph connection to node is not bidirectional kernel-5.6.0-rc6
2020-03-19 7:31 graph connection to node is not bidirectional kernel-5.6.0-rc6 Vinay Simha B N
@ 2020-03-19 15:46 ` Rob Herring
2020-03-19 15:56 ` Vinay Simha B N
0 siblings, 1 reply; 6+ messages in thread
From: Rob Herring @ 2020-03-19 15:46 UTC (permalink / raw)
To: Vinay Simha B N
Cc: open list:DRM DRIVER FOR MSM ADRENO GPU,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list, Andrzej Hajda, Laurent Pinchart
On Thu, Mar 19, 2020 at 1:31 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
>
> hi,
>
> I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
> warning in compilation, built boot image works on qcom apq8016-ifc6309
> board with the dsi->bridge->lvds panel.
> Because of this warning i cannot create a .yaml documentation examples.
> Please suggest.
>
> tc_bridge: bridge@f {
^^^^^^^^
> arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
> (graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
^^^^^^^^^
Looks like you have 2 different bridges.
Rob
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: graph connection to node is not bidirectional kernel-5.6.0-rc6
2020-03-19 15:46 ` Rob Herring
@ 2020-03-19 15:56 ` Vinay Simha B N
2020-03-19 17:06 ` Rob Herring
0 siblings, 1 reply; 6+ messages in thread
From: Vinay Simha B N @ 2020-03-19 15:56 UTC (permalink / raw)
To: Rob Herring
Cc: open list:DRM DRIVER FOR MSM ADRENO GPU,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list, Andrzej Hajda, Laurent Pinchart
On Thu, Mar 19, 2020 at 9:16 PM Rob Herring <robh@kernel.org> wrote:
>
> On Thu, Mar 19, 2020 at 1:31 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
> >
> > hi,
> >
> > I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
> > warning in compilation, built boot image works on qcom apq8016-ifc6309
> > board with the dsi->bridge->lvds panel.
> > Because of this warning i cannot create a .yaml documentation examples.
> > Please suggest.
> >
> > tc_bridge: bridge@f {
>
> ^^^^^^^^
>
> > arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
> > (graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
>
> ^^^^^^^^^
>
> Looks like you have 2 different bridges.
>
i had two bridges, if we disable one bridge also we get the warning
arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:333.53-335.35: Warning
(graph_endpoint): /soc/auo,b101xtn01/port/endpoint: graph connection
to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
bidirectional
> Rob
--
regards,
vinaysimha
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: graph connection to node is not bidirectional kernel-5.6.0-rc6
2020-03-19 15:56 ` Vinay Simha B N
@ 2020-03-19 17:06 ` Rob Herring
2020-03-19 17:16 ` Vinay Simha B N
0 siblings, 1 reply; 6+ messages in thread
From: Rob Herring @ 2020-03-19 17:06 UTC (permalink / raw)
To: Vinay Simha B N
Cc: open list:DRM DRIVER FOR MSM ADRENO GPU,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list, Andrzej Hajda, Laurent Pinchart
On Thu, Mar 19, 2020 at 9:56 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
>
> On Thu, Mar 19, 2020 at 9:16 PM Rob Herring <robh@kernel.org> wrote:
> >
> > On Thu, Mar 19, 2020 at 1:31 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
> > >
> > > hi,
> > >
> > > I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
> > > warning in compilation, built boot image works on qcom apq8016-ifc6309
> > > board with the dsi->bridge->lvds panel.
> > > Because of this warning i cannot create a .yaml documentation examples.
> > > Please suggest.
> > >
> > > tc_bridge: bridge@f {
> >
> > ^^^^^^^^
> >
> > > arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
> > > (graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
> >
> > ^^^^^^^^^
> >
> > Looks like you have 2 different bridges.
> >
> i had two bridges, if we disable one bridge also we get the warning
>
> arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:333.53-335.35: Warning
> (graph_endpoint): /soc/auo,b101xtn01/port/endpoint: graph connection
> to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
> bidirectional
You can't just disable nodes. To switch which bridge is enabled, you
already have to modify remote-endpoint at the other end. So the
requirement is you have to modify both 'remote-endpoint' properties
(or really all 3).
The other options is if you want both connections described, then you
need 2 'endpoint' nodes to connect both bridges.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: graph connection to node is not bidirectional kernel-5.6.0-rc6
2020-03-19 17:06 ` Rob Herring
@ 2020-03-19 17:16 ` Vinay Simha B N
2020-03-20 4:32 ` Vinay Simha B N
0 siblings, 1 reply; 6+ messages in thread
From: Vinay Simha B N @ 2020-03-19 17:16 UTC (permalink / raw)
To: Rob Herring
Cc: open list:DRM DRIVER FOR MSM ADRENO GPU,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list, Andrzej Hajda, Laurent Pinchart
On Thu, Mar 19, 2020 at 10:36 PM Rob Herring <robh@kernel.org> wrote:
>
> On Thu, Mar 19, 2020 at 9:56 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
> >
> > On Thu, Mar 19, 2020 at 9:16 PM Rob Herring <robh@kernel.org> wrote:
> > >
> > > On Thu, Mar 19, 2020 at 1:31 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
> > > >
> > > > hi,
> > > >
> > > > I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
> > > > warning in compilation, built boot image works on qcom apq8016-ifc6309
> > > > board with the dsi->bridge->lvds panel.
> > > > Because of this warning i cannot create a .yaml documentation examples.
> > > > Please suggest.
> > > >
> > > > tc_bridge: bridge@f {
> > >
> > > ^^^^^^^^
> > >
> > > > arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
> > > > (graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
> > >
> > > ^^^^^^^^^
> > >
> > > Looks like you have 2 different bridges.
> > >
> > i had two bridges, if we disable one bridge also we get the warning
> >
> > arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:333.53-335.35: Warning
> > (graph_endpoint): /soc/auo,b101xtn01/port/endpoint: graph connection
> > to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
> > bidirectional
>
> You can't just disable nodes. To switch which bridge is enabled, you
> already have to modify remote-endpoint at the other end. So the
> requirement is you have to modify both 'remote-endpoint' properties
> (or really all 3).
>
> The other options is if you want both connections described, then you
> need 2 'endpoint' nodes to connect both bridges.
even after removing one bridge(dsi2hdmi) in the device tree, currently
using only one bridge(dsi2lvds), i do still get the compilation warning.
graph connection
to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
bidirectional
This compilation warning does not cause any problem with the boot image created
dsi -> dsi2lvds bridge-> lvds panel . Able to get the display properly.
https://github.com/vinaysimhabn/kernel-msm/blob/08e4821646b5c128559c506a5777d8782f1ff79e/Documentation/devicetree/bindings/display/bridge/toshiba%2Ctc358775.yaml
But while creating documentation yaml, it is not allowing to add this examples.
--
regards,
vinaysimha
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: graph connection to node is not bidirectional kernel-5.6.0-rc6
2020-03-19 17:16 ` Vinay Simha B N
@ 2020-03-20 4:32 ` Vinay Simha B N
0 siblings, 0 replies; 6+ messages in thread
From: Vinay Simha B N @ 2020-03-20 4:32 UTC (permalink / raw)
To: Rob Herring
Cc: open list:DRM DRIVER FOR MSM ADRENO GPU,
open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS,
open list, Andrzej Hajda, Laurent Pinchart
rob,
issue got resolved. the problem was end node of the panel had the label.
- panel2: eppendorf {
+ lvds-out {
https://github.com/vinaysimhabn/kernel-msm/commit/a7bf9ccd0b61cb355fe7fa768e65b6f04cfa686f
thanks.
On Thu, Mar 19, 2020 at 10:46 PM Vinay Simha B N <simhavcs@gmail.com> wrote:
>
> On Thu, Mar 19, 2020 at 10:36 PM Rob Herring <robh@kernel.org> wrote:
> >
> > On Thu, Mar 19, 2020 at 9:56 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
> > >
> > > On Thu, Mar 19, 2020 at 9:16 PM Rob Herring <robh@kernel.org> wrote:
> > > >
> > > > On Thu, Mar 19, 2020 at 1:31 AM Vinay Simha B N <simhavcs@gmail.com> wrote:
> > > > >
> > > > > hi,
> > > > >
> > > > > I am getting the endpoint' is not bidirectional(d2l_in, dsi0_out)
> > > > > warning in compilation, built boot image works on qcom apq8016-ifc6309
> > > > > board with the dsi->bridge->lvds panel.
> > > > > Because of this warning i cannot create a .yaml documentation examples.
> > > > > Please suggest.
> > > > >
> > > > > tc_bridge: bridge@f {
> > > >
> > > > ^^^^^^^^
> > > >
> > > > > arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:253.28-255.9: Warning
> > > > > (graph_endpoint): /soc/i2c@78b8000/bridge@39/ports/port@0/endpoint:
> > > >
> > > > ^^^^^^^^^
> > > >
> > > > Looks like you have 2 different bridges.
> > > >
> > > i had two bridges, if we disable one bridge also we get the warning
> > >
> > > arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi:333.53-335.35: Warning
> > > (graph_endpoint): /soc/auo,b101xtn01/port/endpoint: graph connection
> > > to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
> > > bidirectional
> >
> > You can't just disable nodes. To switch which bridge is enabled, you
> > already have to modify remote-endpoint at the other end. So the
> > requirement is you have to modify both 'remote-endpoint' properties
> > (or really all 3).
> >
> > The other options is if you want both connections described, then you
> > need 2 'endpoint' nodes to connect both bridges.
> even after removing one bridge(dsi2hdmi) in the device tree, currently
> using only one bridge(dsi2lvds), i do still get the compilation warning.
>
> graph connection
> to node '/soc/i2c@78b8000/bridge@f/ports/port@1/endpoint' is not
> bidirectional
>
> This compilation warning does not cause any problem with the boot image created
> dsi -> dsi2lvds bridge-> lvds panel . Able to get the display properly.
>
> https://github.com/vinaysimhabn/kernel-msm/blob/08e4821646b5c128559c506a5777d8782f1ff79e/Documentation/devicetree/bindings/display/bridge/toshiba%2Ctc358775.yaml
>
> But while creating documentation yaml, it is not allowing to add this examples.
> --
> regards,
> vinaysimha
--
regards,
vinaysimha
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2020-03-20 4:33 UTC | newest]
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2020-03-19 7:31 graph connection to node is not bidirectional kernel-5.6.0-rc6 Vinay Simha B N
2020-03-19 15:46 ` Rob Herring
2020-03-19 15:56 ` Vinay Simha B N
2020-03-19 17:06 ` Rob Herring
2020-03-19 17:16 ` Vinay Simha B N
2020-03-20 4:32 ` Vinay Simha B N
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