| Message ID | 20240701085837.50855-2-manikandan.m@microchip.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Panel HIMAX support for Microchip's AC40T08A MIPI display | expand |
On Mon, Jul 01, 2024 at 02:28:35PM +0530, Manikandan Muralidharan wrote: > Add compatible string for the Microchip's AC40T08A MIPI Display > panel.This panel uses a Himax HX8394 display controller. > The reset line is not populated and leads to driver probe issues, > thus add conditional block to narrow reset-gpio property per variant. I really should have asked on v1, but I wasn't sure whether or not the optional nature of the reset-gpios was specific to your new panel so I held off: Is it ever the case that a reset-gpio can be provided for this microchip panel, or just not in the configuration you tested? If it is never possible, then I'd probably do... > > Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com> > --- > changes in v2: > - re-order compatible string alphabetically. > - Add conditional block to narrow reset-gpio property from required > list based on compatible string check > --- > .../bindings/display/panel/himax,hx8394.yaml | 17 +++++++++++++---- > 1 file changed, 13 insertions(+), 4 deletions(-) > > diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml > index 644387e4fb6f..75ccabff308b 100644 > --- a/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml > +++ b/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml > @@ -15,14 +15,12 @@ description: > such as the HannStar HSD060BHW4 720x1440 TFT LCD panel connected with > a MIPI-DSI video interface. > > -allOf: > - - $ref: panel-common.yaml# > - > properties: > compatible: > items: > - enum: > - hannstar,hsd060bhw4 > + - microchip,ac40t08a-mipi-panel > - powkiddy,x55-panel > - const: himax,hx8394 > > @@ -46,7 +44,6 @@ properties: > required: > - compatible > - reg > - - reset-gpios > - backlight > - port > - vcc-supply > @@ -54,6 +51,18 @@ required: > > additionalProperties: false > > +allOf: > + - $ref: panel-common.yaml# > + - if: > + not: > + properties: > + compatible: > + enum: > + - microchip,ac40t08a-mipi-panel > + then: > + required: > + - reset-gpios - if: properties: compatible: const: microchip,ac40t08a-mipi-panel then: properties: reset-gpios: false else: required: - reset-gpios Otherwise, what you have is fine. Cheers, Conor. > examples: > - | > #include <dt-bindings/gpio/gpio.h> > -- > 2.25.1 >
Hi Conor, On 01/07/24 3:33 pm, Conor Dooley wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > > ForwardedMessage.eml > > Subject: > Re: [PATCH v2 1/3] dt-bindings: display: himax-hx8394: Add Microchip > AC40T08A MIPI Display panel > From: > Conor Dooley <conor@kernel.org> > Date: > 01/07/24, 3:33 pm > > To: > Manikandan Muralidharan <manikandan.m@microchip.com> > CC: > megi@xff.cz, javierm@redhat.com, neil.armstrong@linaro.org, > quic_jesszhan@quicinc.com, sam@ravnborg.org, airlied@gmail.com, > daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, > tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, > conor+dt@kernel.org, dri-devel@lists.freedesktop.org, > devicetree@vger.kernel.org, linux-kernel@vger.kernel.org > > > On Mon, Jul 01, 2024 at 02:28:35PM +0530, Manikandan Muralidharan wrote: >> Add compatible string for the Microchip's AC40T08A MIPI Display >> panel.This panel uses a Himax HX8394 display controller. >> The reset line is not populated and leads to driver probe issues, >> thus add conditional block to narrow reset-gpio property per variant. > I really should have asked on v1, but I wasn't sure whether or not the > optional nature of the reset-gpios was specific to your new panel so I > held off: Is it ever the case that a reset-gpio can be provided for this > microchip panel, or just not in the configuration you tested? If it is > never possible, then I'd probably do... The reset-gpio line can be provided for the microchip MIPI panel, the SoC variant in which I tested did not have the reset line configured, hence had to make it optional here and also in the driver to avoid panel probe issues. > >> Signed-off-by: Manikandan Muralidharan<manikandan.m@microchip.com> >> --- >> changes in v2: >> - re-order compatible string alphabetically. >> - Add conditional block to narrow reset-gpio property from required >> list based on compatible string check >> --- >> .../bindings/display/panel/himax,hx8394.yaml | 17 +++++++++++++---- >> 1 file changed, 13 insertions(+), 4 deletions(-) >> >> diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml >> index 644387e4fb6f..75ccabff308b 100644 >> --- a/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml >> +++ b/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml >> @@ -15,14 +15,12 @@ description: >> such as the HannStar HSD060BHW4 720x1440 TFT LCD panel connected with >> a MIPI-DSI video interface. >> >> -allOf: >> - - $ref: panel-common.yaml# >> - >> properties: >> compatible: >> items: >> - enum: >> - hannstar,hsd060bhw4 >> + - microchip,ac40t08a-mipi-panel >> - powkiddy,x55-panel >> - const: himax,hx8394 >> >> @@ -46,7 +44,6 @@ properties: >> required: >> - compatible >> - reg >> - - reset-gpios >> - backlight >> - port >> - vcc-supply >> @@ -54,6 +51,18 @@ required: >> >> additionalProperties: false >> >> +allOf: >> + - $ref: panel-common.yaml# >> + - if: >> + not: >> + properties: >> + compatible: >> + enum: >> + - microchip,ac40t08a-mipi-panel >> + then: >> + required: >> + - reset-gpios > - if: > properties: > compatible: > const: microchip,ac40t08a-mipi-panel > then: > properties: > reset-gpios: false > else: > required: > - reset-gpios > > Otherwise, what you have is fine. > > Cheers, > Conor. > >> examples: >> - | >> #include <dt-bindings/gpio/gpio.h> >> -- >> 2.25.1 >>
On Tue, Jul 02, 2024 at 04:47:39AM +0000, Manikandan.M@microchip.com wrote: > Hi Conor, > > On 01/07/24 3:33 pm, Conor Dooley wrote: > > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > > > > > ForwardedMessage.eml > > > > Subject: > > Re: [PATCH v2 1/3] dt-bindings: display: himax-hx8394: Add Microchip > > AC40T08A MIPI Display panel > > From: > > Conor Dooley <conor@kernel.org> > > Date: > > 01/07/24, 3:33 pm > > > > To: > > Manikandan Muralidharan <manikandan.m@microchip.com> > > CC: > > megi@xff.cz, javierm@redhat.com, neil.armstrong@linaro.org, > > quic_jesszhan@quicinc.com, sam@ravnborg.org, airlied@gmail.com, > > daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org, > > tzimmermann@suse.de, robh@kernel.org, krzk+dt@kernel.org, > > conor+dt@kernel.org, dri-devel@lists.freedesktop.org, > > devicetree@vger.kernel.org, linux-kernel@vger.kernel.org > > > > btw, please fix your mail client :/ > > On Mon, Jul 01, 2024 at 02:28:35PM +0530, Manikandan Muralidharan wrote: > >> Add compatible string for the Microchip's AC40T08A MIPI Display > >> panel.This panel uses a Himax HX8394 display controller. > >> The reset line is not populated and leads to driver probe issues, > >> thus add conditional block to narrow reset-gpio property per variant. > > I really should have asked on v1, but I wasn't sure whether or not the > > optional nature of the reset-gpios was specific to your new panel so I > > held off: Is it ever the case that a reset-gpio can be provided for this > > microchip panel, or just not in the configuration you tested? If it is > > never possible, then I'd probably do... > The reset-gpio line can be provided for the microchip MIPI panel, the > SoC variant in which I tested did not have the reset line configured, > hence had to make it optional here and also in the driver to avoid panel > probe issues. Okay, then: Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Thanks, Conor.
diff --git a/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml b/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml index 644387e4fb6f..75ccabff308b 100644 --- a/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml +++ b/Documentation/devicetree/bindings/display/panel/himax,hx8394.yaml @@ -15,14 +15,12 @@ description: such as the HannStar HSD060BHW4 720x1440 TFT LCD panel connected with a MIPI-DSI video interface. -allOf: - - $ref: panel-common.yaml# - properties: compatible: items: - enum: - hannstar,hsd060bhw4 + - microchip,ac40t08a-mipi-panel - powkiddy,x55-panel - const: himax,hx8394 @@ -46,7 +44,6 @@ properties: required: - compatible - reg - - reset-gpios - backlight - port - vcc-supply @@ -54,6 +51,18 @@ required: additionalProperties: false +allOf: + - $ref: panel-common.yaml# + - if: + not: + properties: + compatible: + enum: + - microchip,ac40t08a-mipi-panel + then: + required: + - reset-gpios + examples: - | #include <dt-bindings/gpio/gpio.h>
Add compatible string for the Microchip's AC40T08A MIPI Display panel.This panel uses a Himax HX8394 display controller. The reset line is not populated and leads to driver probe issues, thus add conditional block to narrow reset-gpio property per variant. Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com> --- changes in v2: - re-order compatible string alphabetically. - Add conditional block to narrow reset-gpio property from required list based on compatible string check --- .../bindings/display/panel/himax,hx8394.yaml | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-)