diff mbox

[19/19] ARM: sun6i: a31s: Enable HDMI display output on the MSI Primo81 tablet

Message ID 20170602101024.18940-20-wens@csie.org (mailing list archive)
State Not Applicable
Headers show

Commit Message

Chen-Yu Tsai June 2, 2017, 10:10 a.m. UTC
The MSI Primo81 tablet has a micro HDMI connector at the bottom.
This is connected to the SoCs HDMI output.

Enable the display pipeline and the HDMI output.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

Comments

Maxime Ripard June 2, 2017, 7:42 p.m. UTC | #1
On Fri, Jun 02, 2017 at 06:10:24PM +0800, Chen-Yu Tsai wrote:
> The MSI Primo81 tablet has a micro HDMI connector at the bottom.
> This is connected to the SoCs HDMI output.
> 
> Enable the display pipeline and the HDMI output.
> 
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> ---
>  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
> index f3712753fa42..26154b2f87a3 100644
> --- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
> +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
> @@ -52,17 +52,42 @@
>  / {
>  	model = "MSI Primo81 tablet";
>  	compatible = "msi,primo81", "allwinner,sun6i-a31s";
> +
> +	hdmi-connector {
> +		compatible = "hdmi-connector";
> +		type = "c";

Should we add a connector type for this one?

Maxime
Chen-Yu Tsai June 3, 2017, 3:31 p.m. UTC | #2
On Sat, Jun 3, 2017 at 3:42 AM, Maxime Ripard
<maxime.ripard@free-electrons.com> wrote:
> On Fri, Jun 02, 2017 at 06:10:24PM +0800, Chen-Yu Tsai wrote:
>> The MSI Primo81 tablet has a micro HDMI connector at the bottom.
>> This is connected to the SoCs HDMI output.
>>
>> Enable the display pipeline and the HDMI output.
>>
>> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
>> ---
>>  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
>>  1 file changed, 25 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> index f3712753fa42..26154b2f87a3 100644
>> --- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> @@ -52,17 +52,42 @@
>>  / {
>>       model = "MSI Primo81 tablet";
>>       compatible = "msi,primo81", "allwinner,sun6i-a31s";
>> +
>> +     hdmi-connector {
>> +             compatible = "hdmi-connector";
>> +             type = "c";
>
> Should we add a connector type for this one?

To be honest I don't know. DRM has HDMI-B to differentiate dual-link
connections, but that is only used by Intel and AMD GPU drivers.
AMD driver has "/* HDMI-B is basically DL-DVI; analog works fine */",
which makes sense since actual HDMI B-type connectors only exist on
paper. None of the other drivers seem to care.

ChenYu
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Rob Herring June 7, 2017, 10:36 p.m. UTC | #3
On Fri, Jun 02, 2017 at 09:42:19PM +0200, Maxime Ripard wrote:
> On Fri, Jun 02, 2017 at 06:10:24PM +0800, Chen-Yu Tsai wrote:
> > The MSI Primo81 tablet has a micro HDMI connector at the bottom.
> > This is connected to the SoCs HDMI output.
> > 
> > Enable the display pipeline and the HDMI output.
> > 
> > Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> > ---
> >  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
> >  1 file changed, 25 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
> > index f3712753fa42..26154b2f87a3 100644
> > --- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
> > +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
> > @@ -52,17 +52,42 @@
> >  / {
> >  	model = "MSI Primo81 tablet";
> >  	compatible = "msi,primo81", "allwinner,sun6i-a31s";
> > +
> > +	hdmi-connector {
> > +		compatible = "hdmi-connector";
> > +		type = "c";
> 
> Should we add a connector type for this one?

c as in USB Type C? I'd prefer to see a new compatible string. Is type 
even documented?

Rob
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Ilia Mirkin June 7, 2017, 10:47 p.m. UTC | #4
On Wed, Jun 7, 2017 at 6:36 PM, Rob Herring <robh@kernel.org> wrote:
> On Fri, Jun 02, 2017 at 09:42:19PM +0200, Maxime Ripard wrote:
>> On Fri, Jun 02, 2017 at 06:10:24PM +0800, Chen-Yu Tsai wrote:
>> > The MSI Primo81 tablet has a micro HDMI connector at the bottom.
>> > This is connected to the SoCs HDMI output.
>> >
>> > Enable the display pipeline and the HDMI output.
>> >
>> > Signed-off-by: Chen-Yu Tsai <wens@csie.org>
>> > ---
>> >  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
>> >  1 file changed, 25 insertions(+)
>> >
>> > diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> > index f3712753fa42..26154b2f87a3 100644
>> > --- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> > +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>> > @@ -52,17 +52,42 @@
>> >  / {
>> >     model = "MSI Primo81 tablet";
>> >     compatible = "msi,primo81", "allwinner,sun6i-a31s";
>> > +
>> > +   hdmi-connector {
>> > +           compatible = "hdmi-connector";
>> > +           type = "c";
>>
>> Should we add a connector type for this one?
>
> c as in USB Type C? I'd prefer to see a new compatible string. Is type
> even documented?

Probably as in HDMI Type C (there are Type A, C, and D connectors, aka
"regular", "mini", and "micro").
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Chen-Yu Tsai June 9, 2017, 4:08 p.m. UTC | #5
On Thu, Jun 8, 2017 at 6:47 AM, Ilia Mirkin <imirkin@alum.mit.edu> wrote:
> On Wed, Jun 7, 2017 at 6:36 PM, Rob Herring <robh@kernel.org> wrote:
>> On Fri, Jun 02, 2017 at 09:42:19PM +0200, Maxime Ripard wrote:
>>> On Fri, Jun 02, 2017 at 06:10:24PM +0800, Chen-Yu Tsai wrote:
>>> > The MSI Primo81 tablet has a micro HDMI connector at the bottom.
>>> > This is connected to the SoCs HDMI output.
>>> >
>>> > Enable the display pipeline and the HDMI output.
>>> >
>>> > Signed-off-by: Chen-Yu Tsai <wens@csie.org>
>>> > ---
>>> >  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
>>> >  1 file changed, 25 insertions(+)
>>> >
>>> > diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>> > index f3712753fa42..26154b2f87a3 100644
>>> > --- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>> > +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>> > @@ -52,17 +52,42 @@
>>> >  / {
>>> >     model = "MSI Primo81 tablet";
>>> >     compatible = "msi,primo81", "allwinner,sun6i-a31s";
>>> > +
>>> > +   hdmi-connector {
>>> > +           compatible = "hdmi-connector";
>>> > +           type = "c";
>>>
>>> Should we add a connector type for this one?
>>
>> c as in USB Type C? I'd prefer to see a new compatible string. Is type
>> even documented?

Indeed it is:

http://elixir.free-electrons.com/linux/latest/source/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt#L6

> Probably as in HDMI Type C (there are Type A, C, and D connectors, aka
> "regular", "mini", and "micro").

Correct.

ChenYu
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Rob Herring June 9, 2017, 4:49 p.m. UTC | #6
On Fri, Jun 9, 2017 at 11:08 AM, Chen-Yu Tsai <wens@csie.org> wrote:
> On Thu, Jun 8, 2017 at 6:47 AM, Ilia Mirkin <imirkin@alum.mit.edu> wrote:
>> On Wed, Jun 7, 2017 at 6:36 PM, Rob Herring <robh@kernel.org> wrote:
>>> On Fri, Jun 02, 2017 at 09:42:19PM +0200, Maxime Ripard wrote:
>>>> On Fri, Jun 02, 2017 at 06:10:24PM +0800, Chen-Yu Tsai wrote:
>>>> > The MSI Primo81 tablet has a micro HDMI connector at the bottom.
>>>> > This is connected to the SoCs HDMI output.
>>>> >
>>>> > Enable the display pipeline and the HDMI output.
>>>> >
>>>> > Signed-off-by: Chen-Yu Tsai <wens@csie.org>
>>>> > ---
>>>> >  arch/arm/boot/dts/sun6i-a31s-primo81.dts | 25 +++++++++++++++++++++++++
>>>> >  1 file changed, 25 insertions(+)
>>>> >
>>>> > diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>>> > index f3712753fa42..26154b2f87a3 100644
>>>> > --- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>>> > +++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
>>>> > @@ -52,17 +52,42 @@
>>>> >  / {
>>>> >     model = "MSI Primo81 tablet";
>>>> >     compatible = "msi,primo81", "allwinner,sun6i-a31s";
>>>> > +
>>>> > +   hdmi-connector {
>>>> > +           compatible = "hdmi-connector";
>>>> > +           type = "c";
>>>>
>>>> Should we add a connector type for this one?
>>>
>>> c as in USB Type C? I'd prefer to see a new compatible string. Is type
>>> even documented?
>
> Indeed it is:
>
> http://elixir.free-electrons.com/linux/latest/source/Documentation/devicetree/bindings/display/connector/hdmi-connector.txt#L6

-ETOOMANYBINDINGS

I guess I don't understand the original question then. This looks fine to me.

Rob
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diff mbox

Patch

diff --git a/arch/arm/boot/dts/sun6i-a31s-primo81.dts b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
index f3712753fa42..26154b2f87a3 100644
--- a/arch/arm/boot/dts/sun6i-a31s-primo81.dts
+++ b/arch/arm/boot/dts/sun6i-a31s-primo81.dts
@@ -52,17 +52,42 @@ 
 / {
 	model = "MSI Primo81 tablet";
 	compatible = "msi,primo81", "allwinner,sun6i-a31s";
+
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "c";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
 };
 
 &cpu0 {
 	cpu-supply = <&reg_dcdc3>;
 };
 
+&de {
+	status = "okay";
+};
+
 &ehci0 {
 	/* rtl8188etv wifi is connected here */
 	status = "okay";
 };
 
+&hdmi {
+	status = "okay";
+};
+
+&hdmi_out {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+	};
+};
+
 &i2c0 {
 	/* pull-ups and device VDDIO use AXP221 DLDO3 */
 	pinctrl-names = "default";