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From: Chris Morgan <macroalpha82@gmail.com>
To: linux-rockchip@lists.infradead.org
Cc: mripard@kernel.org, devicetree@vger.kernel.org,
	conor+dt@kernel.org, Chris Morgan <macromorgan@hotmail.com>,
	rfoss@kernel.org, tzimmermann@suse.de, jonas@kwiboo.se,
	neil.armstrong@linaro.org, heiko@sntech.de,
	sebastian.reichel@collabora.com, jernej.skrabec@gmail.com,
	dri-devel@lists.freedesktop.org, andrzej.hajda@intel.com,
	andy.yan@rock-chips.com, krzk+dt@kernel.org, robh@kernel.org,
	Laurent.pinchart@ideasonboard.com
Subject: [PATCH 1/3] dt-bindings: display: rockchip: Add no-hpd for dw-hdmi-qp controller
Date: Thu,  6 Nov 2025 12:09:12 -0600	[thread overview]
Message-ID: <20251106180914.768502-2-macroalpha82@gmail.com> (raw)
In-Reply-To: <20251106180914.768502-1-macroalpha82@gmail.com>

From: Chris Morgan <macromorgan@hotmail.com>

Add an attribute of "no-hpd" for the Rockchip dw-hdmi-qp controller.
This is used to describe implementations where the HPD pin is not
connected or used for other purposes, such as in the RK3588S based
Gameforce Ace which repurposed the GPIO for an additional face
button.

The "no-hpd" option was chosen to be consistent with other devices
which already define this parameter for broken or missing hpd
functionality.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
---
 .../display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml        | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
index 96b4b088eebe..07342838cd52 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
@@ -69,6 +69,12 @@ properties:
       - const: main
       - const: hpd
 
+  no-hpd:
+    type: boolean
+    description:
+      The HPD pin is not present or used for another purpose, and the EDID
+      must be polled instead to determine if a device is attached.
+
   phys:
     maxItems: 1
     description: The HDMI/eDP PHY
-- 
2.43.0


_______________________________________________
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Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip

WARNING: multiple messages have this Message-ID (diff)
From: Chris Morgan <macroalpha82@gmail.com>
To: linux-rockchip@lists.infradead.org
Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org,
	cristian.ciocaltea@collabora.com,
	sebastian.reichel@collabora.com, jernej.skrabec@gmail.com,
	jonas@kwiboo.se, Laurent.pinchart@ideasonboard.com,
	rfoss@kernel.org, neil.armstrong@linaro.org,
	andrzej.hajda@intel.com, conor+dt@kernel.org, krzk+dt@kernel.org,
	robh@kernel.org, tzimmermann@suse.de, mripard@kernel.org,
	andy.yan@rock-chips.com, heiko@sntech.de,
	Chris Morgan <macromorgan@hotmail.com>
Subject: [PATCH 1/3] dt-bindings: display: rockchip: Add no-hpd for dw-hdmi-qp controller
Date: Thu,  6 Nov 2025 12:09:12 -0600	[thread overview]
Message-ID: <20251106180914.768502-2-macroalpha82@gmail.com> (raw)
In-Reply-To: <20251106180914.768502-1-macroalpha82@gmail.com>

From: Chris Morgan <macromorgan@hotmail.com>

Add an attribute of "no-hpd" for the Rockchip dw-hdmi-qp controller.
This is used to describe implementations where the HPD pin is not
connected or used for other purposes, such as in the RK3588S based
Gameforce Ace which repurposed the GPIO for an additional face
button.

The "no-hpd" option was chosen to be consistent with other devices
which already define this parameter for broken or missing hpd
functionality.

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
---
 .../display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml        | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
index 96b4b088eebe..07342838cd52 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,rk3588-dw-hdmi-qp.yaml
@@ -69,6 +69,12 @@ properties:
       - const: main
       - const: hpd
 
+  no-hpd:
+    type: boolean
+    description:
+      The HPD pin is not present or used for another purpose, and the EDID
+      must be polled instead to determine if a device is attached.
+
   phys:
     maxItems: 1
     description: The HDMI/eDP PHY
-- 
2.43.0


  reply	other threads:[~2025-11-06 18:11 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-06 18:09 [PATCH 0/3] Add HDMI for Gameforce Ace Chris Morgan
2025-11-06 18:09 ` Chris Morgan
2025-11-06 18:09 ` Chris Morgan [this message]
2025-11-06 18:09   ` [PATCH 1/3] dt-bindings: display: rockchip: Add no-hpd for dw-hdmi-qp controller Chris Morgan
2025-11-07 17:26   ` Conor Dooley
2025-11-07 17:26     ` Conor Dooley
2025-11-06 18:09 ` [PATCH 2/3] drm/bridge: dw-hdmi-qp: Add support for missing HPD Chris Morgan
2025-11-06 18:09   ` Chris Morgan
2025-11-06 19:40   ` Heiko Stuebner
2025-11-06 19:40     ` Heiko Stuebner
2025-11-06 23:46     ` Chris Morgan
2025-11-06 23:46       ` Chris Morgan
2025-11-07 10:08     ` Sebastian Reichel
2025-11-07 10:08       ` Sebastian Reichel
2025-11-06 18:09 ` [PATCH 3/3] arm64: dts: rockchip: Add HDMI to Gameforce Ace Chris Morgan
2025-11-06 18:09   ` Chris Morgan

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