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, linux-arm-msm@vger.kernel.org,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
jernej.skrabec@siol.net, swboyd@chromium.org,
bjorn.andersson@linaro.org, robdclark@chromium.org,
Douglas Anderson <dianders@chromium.org>,
Sam Ravnborg <sam@ravnborg.org>,
Thierry Reding <thierry.reding@gmail.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings
Date: Mon, 20 Apr 2020 22:06:18 -0700 [thread overview]
Message-ID: <20200420220458.v2.2.I1976736b400a3b30e46efa47782248b86b3bc627@changeid> (raw)
In-Reply-To: <20200421050622.8113-1-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>
---
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
--
2.26.1.301.g55bc3eb7cb9-goog
next prev parent reply other threads:[~2020-04-21 5:07 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-21 5:06 [PATCH v2 0/6] drm: Prepare to use a GPIO on ti-sn65dsi86 for Hot Plug Detect Douglas Anderson
2020-04-21 5:06 ` [PATCH v2 1/6] drm/bridge: ti-sn65dsi86: Export bridge GPIOs to Linux Douglas Anderson
2020-04-22 10:23 ` Stephen Boyd
2020-04-22 16:09 ` Doug Anderson
[not found] ` <158758963395.230545.16210525372433383386@swboyd.mtv.corp.google.com>
2020-04-22 23:31 ` Doug Anderson
2020-04-21 5:06 ` Douglas Anderson [this message]
2020-04-22 10:24 ` [PATCH v2 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings Stephen Boyd
2020-04-21 5:06 ` [PATCH v2 3/6] drm/panel-simple: Support hpd-gpios for delaying prepare() Douglas Anderson
2020-04-22 21:12 ` Stephen Boyd
2020-04-21 5:06 ` [PATCH v2 4/6] dt-bindings: drm/bridge: ti-sn65dsi86: Convert to yaml Douglas Anderson
2020-04-21 5:06 ` [PATCH v2 5/6] dt-bindings: drm/bridge: ti-sn65dsi86: Document no-hpd Douglas Anderson
2020-04-22 10:26 ` Stephen Boyd
2020-04-21 5:06 ` [PATCH v2 6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza Douglas Anderson
2020-04-22 10:26 ` Stephen Boyd
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