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From: Douglas Anderson <dianders@chromium.org>
To: linus.walleij@linaro.org, bgolaszewski@baylibre.com,
	airlied@linux.ie, daniel@ffwll.ch, robh+dt@kernel.org,
	narmstrong@baylibre.com, a.hajda@samsung.com,
	Laurent.pinchart@ideasonboard.com, spanda@codeaurora.org
Cc: jonas@kwiboo.se, jeffrey.l.hugo@gmail.com,
	linux-gpio@vger.kernel.org, bjorn.andersson@linaro.org,
	swboyd@chromium.org, jernej.skrabec@siol.net,
	devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linux-arm-msm@vger.kernel.org, robdclark@chromium.org,
	Douglas Anderson <dianders@chromium.org>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Sam Ravnborg <sam@ravnborg.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v5 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings
Date: Thu,  7 May 2020 14:34:56 -0700	[thread overview]
Message-ID: <20200507143354.v5.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid> (raw)
In-Reply-To: <20200507213500.241695-1-dianders@chromium.org>

In the cases where there is no connector in a system there's no great
place to put "hpd-gpios".  As per discussion [1] the best place to put
it is in the panel.  Add this to the device tree bindings.

[1] https://lore.kernel.org/r/20200417180819.GE5861@pendragon.ideasonboard.com

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2:
- ("dt-bindings: display: Add hpd-gpios to panel-common...") new for v2

 .../devicetree/bindings/display/panel/panel-common.yaml     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
index ed051ba12084..e9a04a3a4f5f 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
@@ -96,6 +96,12 @@ properties:
       (hot plug detect) signal, but the signal isn't hooked up so we should
       hardcode the max delay from the panel spec when powering up the panel.
 
+  hpd-gpios:
+    maxItems: 1
+    description:
+      If Hot Plug Detect (HPD) is connected to a GPIO in the system rather
+      than a dedicated HPD pin the pin can be specified here.
+
   # Control I/Os
 
   # Many display panels can be controlled through pins driven by GPIOs. The nature
-- 
2.26.2.645.ge9eca65c58-goog


WARNING: multiple messages have this Message-ID
From: Douglas Anderson <dianders@chromium.org>
To: linus.walleij@linaro.org, bgolaszewski@baylibre.com,
	airlied@linux.ie, daniel@ffwll.ch, robh+dt@kernel.org,
	narmstrong@baylibre.com, a.hajda@samsung.com,
	Laurent.pinchart@ideasonboard.com, spanda@codeaurora.org
Cc: robdclark@chromium.org, devicetree@vger.kernel.org,
	jernej.skrabec@siol.net, jeffrey.l.hugo@gmail.com,
	linux-arm-msm@vger.kernel.org, jonas@kwiboo.se,
	Douglas Anderson <dianders@chromium.org>,
	dri-devel@lists.freedesktop.org, swboyd@chromium.org,
	linux-gpio@vger.kernel.org,
	Thierry Reding <thierry.reding@gmail.com>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	bjorn.andersson@linaro.org, Sam Ravnborg <sam@ravnborg.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v5 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings
Date: Thu,  7 May 2020 14:34:56 -0700	[thread overview]
Message-ID: <20200507143354.v5.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid> (raw)
In-Reply-To: <20200507213500.241695-1-dianders@chromium.org>

In the cases where there is no connector in a system there's no great
place to put "hpd-gpios".  As per discussion [1] the best place to put
it is in the panel.  Add this to the device tree bindings.

[1] https://lore.kernel.org/r/20200417180819.GE5861@pendragon.ideasonboard.com

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2:
- ("dt-bindings: display: Add hpd-gpios to panel-common...") new for v2

 .../devicetree/bindings/display/panel/panel-common.yaml     | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/panel/panel-common.yaml b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
index ed051ba12084..e9a04a3a4f5f 100644
--- a/Documentation/devicetree/bindings/display/panel/panel-common.yaml
+++ b/Documentation/devicetree/bindings/display/panel/panel-common.yaml
@@ -96,6 +96,12 @@ properties:
       (hot plug detect) signal, but the signal isn't hooked up so we should
       hardcode the max delay from the panel spec when powering up the panel.
 
+  hpd-gpios:
+    maxItems: 1
+    description:
+      If Hot Plug Detect (HPD) is connected to a GPIO in the system rather
+      than a dedicated HPD pin the pin can be specified here.
+
   # Control I/Os
 
   # Many display panels can be controlled through pins driven by GPIOs. The nature
-- 
2.26.2.645.ge9eca65c58-goog

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  parent reply	other threads:[~2020-05-07 21:35 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-07 21:34 [PATCH v5 0/6] drm: Prepare to use a GPIO on ti-sn65dsi86 for Hot Plug Detect Douglas Anderson
2020-05-07 21:34 ` Douglas Anderson
2020-05-07 21:34 ` [PATCH v5 1/6] drm/bridge: ti-sn65dsi86: Export bridge GPIOs to Linux Douglas Anderson
2020-05-07 21:34   ` Douglas Anderson
2020-05-11 16:24   ` Stephen Boyd
2020-05-11 16:24     ` Stephen Boyd
2020-05-12  1:36   ` Bjorn Andersson
2020-05-12  1:36     ` Bjorn Andersson
2020-05-12 12:28   ` Linus Walleij
2020-05-12 12:28     ` Linus Walleij
2020-05-07 21:34 ` Douglas Anderson [this message]
2020-05-07 21:34   ` [PATCH v5 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings Douglas Anderson
2020-05-07 21:34 ` [PATCH v5 3/6] drm/panel-simple: Support hpd-gpios for delaying prepare() Douglas Anderson
2020-05-07 21:34   ` Douglas Anderson
2020-05-07 21:34 ` [PATCH v5 4/6] dt-bindings: drm/bridge: ti-sn65dsi86: Convert to yaml Douglas Anderson
2020-05-07 21:34   ` Douglas Anderson
2020-05-11 16:25   ` Stephen Boyd
2020-05-11 16:25     ` Stephen Boyd
2020-05-07 21:34 ` [PATCH v5 5/6] dt-bindings: drm/bridge: ti-sn65dsi86: Document no-hpd Douglas Anderson
2020-05-07 21:34   ` Douglas Anderson
2020-05-07 21:35 ` [PATCH v5 6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza Douglas Anderson
2020-05-07 21:35   ` Douglas Anderson
2020-05-12  1:21   ` Bjorn Andersson
2020-05-12  1:21     ` Bjorn Andersson
2020-05-09 20:15 ` [PATCH v5 0/6] drm: Prepare to use a GPIO on ti-sn65dsi86 for Hot Plug Detect Sam Ravnborg
2020-05-09 20:15   ` Sam Ravnborg
2020-05-09 22:48   ` Doug Anderson
2020-05-09 22:48     ` Doug Anderson
2020-05-18 14:50     ` Doug Anderson
2020-05-18 14:50       ` Doug Anderson
2020-05-18 17:59       ` Sam Ravnborg
2020-05-18 17:59         ` Sam Ravnborg
2020-05-18 18:05         ` Doug Anderson
2020-05-18 18:05           ` Doug Anderson
2020-05-18 18:28           ` Sam Ravnborg
2020-05-18 18:28             ` Sam Ravnborg

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