From: Eric Anholt <eric@anholt.net>
To: Florian Fainelli <f.fainelli@gmail.com>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@codeaurora.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
dri-devel@lists.freedesktop.org,
Thierry Reding <thierry.reding@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>,
Lee Jones <lee@kernel.org>,
linux-kernel@vger.kernel.org,
bcm-kernel-feedback-list@broadcom.com,
linux-rpi-kernel@lists.infradead.org, linux-clk@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 08/11] dt-bindings: Document the Raspberry Pi Touchscreen nodes.
Date: Wed, 14 Dec 2016 11:46:18 -0800 [thread overview]
Message-ID: <20161214194621.16499-9-eric@anholt.net> (raw)
In-Reply-To: <20161214194621.16499-1-eric@anholt.net>
This doesn't yet cover input, but the driver does get the display
working when the firmware is disabled from talking to our I2C lines.
Signed-off-by: Eric Anholt <eric@anholt.net>
---
.../display/panel/raspberrypi,touchscreen.txt | 45 ++++++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt
diff --git a/Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt b/Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt
new file mode 100644
index 000000000000..fd328c52706b
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/raspberrypi,touchscreen.txt
@@ -0,0 +1,45 @@
+This binding covers the official 7" (800x480) Raspberry Pi touchscreen
+panel.
+
+This DSI panel contains:
+
+- TC358762 DSI->DPI bridge
+- Atmel microcontroller on I2C for power sequencing the DSI bridge and
+ controlling backlight
+- Touchscreen controller on I2C for touch input
+
+and the binding currently covers the DSI display parts but not its
+touch input.
+
+Required properties:
+- compatible: Must be "raspberrypi,touchscreen"
+- raspberrypi,touchscreen-bridge:
+ Handle to the I2C device for Atmel microcontroller
+
+Example:
+
+dsi1: dsi@7e700000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ <...>
+
+ pitouchscreen: panel@0 {
+ compatible = "raspberrypi,touchscreen";
+ reg = <0>;
+
+ raspberrypi,touchscreen-bridge = <&pitouchscreen_bridge>;
+ };
+};
+
+i2c_dsi: i2c {
+ compatible = "i2c-gpio";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ gpios = <&gpio 28 0
+ &gpio 29 0>;
+
+ pitouchscreen_bridge: bridge@45 {
+ compatible = "raspberrypi,touchscreen-bridge-i2c";
+ reg = <0x45>;
+ };
+};
--
2.11.0
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next prev parent reply other threads:[~2016-12-14 19:46 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-14 19:46 [PATCH 00/11] drm/vc4: DSI panel support + Raspberry Pi touchscreen Eric Anholt
2016-12-14 19:46 ` [PATCH 01/11] clk: bcm2835: Don't rate change PLLs on behalf of DSI PLL dividers Eric Anholt
2016-12-14 19:46 ` [PATCH 02/11] clk: bcm2835: Register the DSI0/DSI1 pixel clocks Eric Anholt
2016-12-21 23:14 ` Stephen Boyd
2016-12-22 1:23 ` Eric Anholt
2016-12-14 19:46 ` [PATCH 03/11] clk: bcm2835: Add leaf clock measurement support, disabled by default Eric Anholt
2016-12-14 19:46 ` [PATCH 04/11] drm/vc4: Set up SCALER_DISPCTRL at boot Eric Anholt
2017-01-31 19:35 ` Daniel Vetter
2016-12-14 19:46 ` [PATCH 05/11] drm/vc4: Add support for feeding DSI encoders from the pixel valve Eric Anholt
2017-01-31 19:39 ` Daniel Vetter
2017-01-31 19:54 ` Eric Anholt
2016-12-14 19:46 ` [PATCH 06/11] dt-bindings: Document the VC4 DSI module nodes Eric Anholt
2016-12-14 19:46 ` [PATCH 07/11] drm/vc4: Add DSI driver Eric Anholt
2017-01-31 19:51 ` Daniel Vetter
2016-12-14 19:46 ` Eric Anholt [this message]
2016-12-14 19:46 ` [PATCH 09/11] drm/panel: Add support for the Raspberry Pi 7" Touchscreen Eric Anholt
2017-01-31 21:07 ` Thierry Reding
2017-01-31 21:17 ` Daniel Vetter
2017-01-31 21:42 ` Thierry Reding
2017-01-31 21:19 ` Daniel Vetter
2017-01-31 21:38 ` Thierry Reding
2016-12-14 19:46 ` [PATCH 10/11] ARM: bcm2835: dt: Add the DSI module nodes and clocks Eric Anholt
2016-12-14 19:46 ` [PATCH 11/11] ARM: bcm2835: Enable the Raspberry Pi touchscreen panel Eric Anholt
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