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
WARNING: multiple messages have this Message-ID (diff)
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>, bjorn.andersson@linaro.org, Sam Ravnborg <sam@ravnborg.org>, 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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-04-21 5:07 UTC|newest] Thread overview: 28+ 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 ` Douglas Anderson 2020-04-21 5:06 ` [PATCH v2 1/6] drm/bridge: ti-sn65dsi86: Export bridge GPIOs to Linux Douglas Anderson 2020-04-21 5:06 ` Douglas Anderson 2020-04-22 10:23 ` Stephen Boyd 2020-04-22 10:23 ` Stephen Boyd 2020-04-22 16:09 ` Doug Anderson 2020-04-22 16:09 ` Doug Anderson 2020-04-22 21:07 ` Stephen Boyd 2020-04-22 23:31 ` Doug Anderson 2020-04-21 5:06 ` Douglas Anderson [this message] 2020-04-21 5:06 ` [PATCH v2 2/6] dt-bindings: display: Add hpd-gpios to panel-common bindings Douglas Anderson 2020-04-22 10:24 ` Stephen Boyd 2020-04-22 10:24 ` Stephen Boyd 2020-04-21 5:06 ` [PATCH v2 3/6] drm/panel-simple: Support hpd-gpios for delaying prepare() Douglas Anderson 2020-04-21 5:06 ` Douglas Anderson 2020-04-22 21:12 ` Stephen Boyd 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 ` Douglas Anderson 2020-04-21 5:06 ` [PATCH v2 5/6] dt-bindings: drm/bridge: ti-sn65dsi86: Document no-hpd Douglas Anderson 2020-04-21 5:06 ` Douglas Anderson 2020-04-22 10:26 ` Stephen Boyd 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 2020-04-21 5:06 ` Douglas Anderson 2020-04-22 10:26 ` Stephen Boyd 2020-04-22 10:26 ` Stephen Boyd
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