[v1 0/2] drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[v1 0/2] drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[yangcong]

The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new 
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on. Add support in the driver for this.

yangcong (2):
  drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail
  dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

 .../bindings/display/panel/boe,tv101wum-nl6.yaml      |  4 ++++
 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c        | 11 +++++++++++
 2 files changed, 15 insertions(+)

-- 
2.25.1

[v1 1/2] drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[yangcong]

The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on. Add support in the driver for this.

Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
---
 drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index db9d0b86d542..9a644433629e 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -45,6 +45,7 @@ struct boe_panel {
 	const struct panel_desc *desc;
 
 	enum drm_panel_orientation orientation;
+	struct regulator *pp3300;
 	struct regulator *pp1800;
 	struct regulator *avee;
 	struct regulator *avdd;
@@ -511,6 +512,7 @@ static int boe_panel_unprepare(struct drm_panel *panel)
 		gpiod_set_value(boe->enable_gpio, 0);
 		usleep_range(5000, 7000);
 		regulator_disable(boe->pp1800);
+		regulator_disable(boe->pp3300);
 	} else {
 		gpiod_set_value(boe->enable_gpio, 0);
 		usleep_range(500, 1000);
@@ -518,6 +520,7 @@ static int boe_panel_unprepare(struct drm_panel *panel)
 		regulator_disable(boe->avdd);
 		usleep_range(5000, 7000);
 		regulator_disable(boe->pp1800);
+		regulator_disable(boe->pp3300);
 	}
 
 	boe->prepared = false;
@@ -536,6 +539,10 @@ static int boe_panel_prepare(struct drm_panel *panel)
 	gpiod_set_value(boe->enable_gpio, 0);
 	usleep_range(1000, 1500);
 
+	ret = regulator_enable(boe->pp3300);
+	if (ret < 0)
+		return ret;
+
 	ret = regulator_enable(boe->pp1800);
 	if (ret < 0)
 		return ret;
@@ -767,6 +774,10 @@ static int boe_panel_add(struct boe_panel *boe)
 	if (IS_ERR(boe->avee))
 		return PTR_ERR(boe->avee);
 
+	boe->pp3300 = devm_regulator_get(dev, "pp3300");
+	if (IS_ERR(boe->pp3300))
+		return PTR_ERR(boe->pp3300);
+
 	boe->pp1800 = devm_regulator_get(dev, "pp1800");
 	if (IS_ERR(boe->pp1800))
 		return PTR_ERR(boe->pp1800);
-- 
2.25.1

[v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[yangcong]

The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on.

Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
---
 .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
index 38bc1d1b511e..e45de7a4360e 100644
--- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
+++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
@@ -36,6 +36,9 @@ properties:
   pp1800-supply:
     description: core voltage supply
 
+  pp3300-supply:
+    description: core voltage supply
+
   avdd-supply:
     description: phandle of the regulator that provides positive voltage
 
@@ -52,6 +55,7 @@ required:
   - reg
   - enable-gpios
   - pp1800-supply
+  - pp3300-supply
   - avdd-supply
   - avee-supply
 
-- 
2.25.1

Re: [v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[Rob Herring]

On Thu, 19 Aug 2021 20:48:44 +0800, yangcong wrote:
> The auo,b101uan08.3 panel (already supported by this driver) has
> a 3.3V rail that needs to be turned on. For previous users of
> this panel this voltage was directly output by pmic. On a new
> user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
> to turn the 3.3V rail on.
> 
> Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
> ---
>  .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
>  1 file changed, 4 insertions(+)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.example.dt.yaml: panel@0: 'pp3300-supply' is a required property
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1518662

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

Re: [v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[Doug Anderson]

Hi,

On Thu, Aug 19, 2021 at 2:31 AM yangcong
<yangcong5@huaqin.corp-partner.google.com> wrote:
>
> The auo,b101uan08.3 panel (already supported by this driver) has
> a 3.3V rail that needs to be turned on. For previous users of
> this panel this voltage was directly output by pmic. On a new
> user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
> to turn the 3.3V rail on.
>
> Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
>
> ---
>  .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> index 38bc1d1b511e..e45de7a4360e 100644
> --- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> +++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
> @@ -36,6 +36,9 @@ properties:
>    pp1800-supply:
>      description: core voltage supply
>
> +  pp3300-supply:
> +    description: core voltage supply
> +
>    avdd-supply:
>      description: phandle of the regulator that provides positive voltage
>
> @@ -52,6 +55,7 @@ required:
>    - reg
>    - enable-gpios
>    - pp1800-supply
> +  - pp3300-supply

Please send a v2 _without_ this line. Old device trees that don't
specify the 3.3V rail need to keep working fine and thus it's optional
(not required) for people to include the 3.3 V rail.

(NOTE: in the source code things will work fine without any changes
because the regulator framework will automatically create a "dummy"
regulator for you if one wasn't specified in the device tree).

-Doug

Re: [v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[Rob Herring]

On Thu, 19 Aug 2021 17:29:43 +0800, yangcong wrote:
> The auo,b101uan08.3 panel (already supported by this driver) has
> a 3.3V rail that needs to be turned on. For previous users of
> this panel this voltage was directly output by pmic. On a new
> user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
> to turn the 3.3V rail on.
> 
> Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
> ---
>  .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
>  1 file changed, 4 insertions(+)
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.example.dt.yaml: panel@0: 'pp3300-supply' is a required property
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1518552

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

[v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[yangcong]

The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on.

Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
---
 .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
index 38bc1d1b511e..e45de7a4360e 100644
--- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
+++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
@@ -36,6 +36,9 @@ properties:
   pp1800-supply:
     description: core voltage supply
 
+  pp3300-supply:
+    description: core voltage supply
+
   avdd-supply:
     description: phandle of the regulator that provides positive voltage
 
@@ -52,6 +55,7 @@ required:
   - reg
   - enable-gpios
   - pp1800-supply
+  - pp3300-supply
   - avdd-supply
   - avee-supply
 
-- 
2.25.1

[v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[yangcong]

The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on.

Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
---
 .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
index 38bc1d1b511e..e45de7a4360e 100644
--- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
+++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
@@ -36,6 +36,9 @@ properties:
   pp1800-supply:
     description: core voltage supply
 
+  pp3300-supply:
+    description: core voltage supply
+
   avdd-supply:
     description: phandle of the regulator that provides positive voltage
 
@@ -52,6 +55,7 @@ required:
   - reg
   - enable-gpios
   - pp1800-supply
+  - pp3300-supply
   - avdd-supply
   - avee-supply
 
-- 
2.25.1

[v1 2/2] dt-bindings: drm/panel: boe-tv101wum-nl6: Support enabling a 3.3V rail

[yangcong]

The auo,b101uan08.3 panel (already supported by this driver) has
a 3.3V rail that needs to be turned on. For previous users of
this panel this voltage was directly output by pmic. On a new
user (the not-yet-upstream sc7180-trogdor-mrbland board) we need
to turn the 3.3V rail on.

Signed-off-by: yangcong <yangcong5@huaqin.corp-partner.google.com>
---
 .../devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
index 38bc1d1b511e..e45de7a4360e 100644
--- a/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
+++ b/Documentation/devicetree/bindings/display/panel/boe,tv101wum-nl6.yaml
@@ -36,6 +36,9 @@ properties:
   pp1800-supply:
     description: core voltage supply
 
+  pp3300-supply:
+    description: core voltage supply
+
   avdd-supply:
     description: phandle of the regulator that provides positive voltage
 
@@ -52,6 +55,7 @@ required:
   - reg
   - enable-gpios
   - pp1800-supply
+  - pp3300-supply
   - avdd-supply
   - avee-supply
 
-- 
2.25.1