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From: Thierry Reding <thierry.reding@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Rob Herring <robh+dt@kernel.org>
Cc: linux-tegra@vger.kernel.org, devicetree@vger.kernel.org,
	dri-devel@lists.freedesktop.org
Subject: [PATCH 1/2] dt-bindings: display: tegra: Support SOR crossbar configuration
Date: Fri, 25 Jan 2019 11:00:57 +0100	[thread overview]
Message-ID: <20190125100058.20203-1-thierry.reding@gmail.com> (raw)

From: Thierry Reding <treding@nvidia.com>

The SOR has a crossbar that can map each lane of the SOR to each of the
SOR pads. The mapping is usually the same across designs for a specific
SoC generation, but every now and then there's a design that doesn't.

Allow the crossbar configuration to be specified in device tree to make
it possible to support these designs.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 .../bindings/display/tegra/nvidia,tegra20-host1x.txt           | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
index 593be44a53c9..9999255ac5b6 100644
--- a/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
+++ b/Documentation/devicetree/bindings/display/tegra/nvidia,tegra20-host1x.txt
@@ -238,6 +238,9 @@ of the following host1x client modules:
   - nvidia,hpd-gpio: specifies a GPIO used for hotplug detection
   - nvidia,edid: supplies a binary EDID blob
   - nvidia,panel: phandle of a display panel
+  - nvidia,xbar-cfg: 5 cells containing the crossbar configuration. Each lane
+    of the SOR, identified by the cell's index, is mapped via the crossbar to
+    the pad specified by the cell's value.
 
   Optional properties when driving an eDP output:
   - nvidia,dpaux: phandle to a DispayPort AUX interface
-- 
2.19.1

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             reply	other threads:[~2019-01-25 10:00 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-25 10:00 Thierry Reding [this message]
2019-01-25 10:00 ` [PATCH 2/2] drm/tegra: sor: Support device tree crossbar configuration Thierry Reding
2019-02-01 14:10 ` [PATCH 1/2] dt-bindings: display: tegra: Support SOR " Thierry Reding

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