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From: Philippe Cornu <philippe.cornu@st.com>
To: Rob Herring <robh+dt@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
	"Russell King" <linux@armlinux.org.uk>,
	Mark Rutland <mark.rutland@arm.com>,
	"Yannick Fertre" <yannick.fertre@st.com>,
	Philippe Cornu <philippe.cornu@st.com>,
	Benjamin Gaignard <benjamin.gaignard@linaro.org>,
	Vincent Abriou <vincent.abriou@st.com>,
	David Airlie <airlied@linux.ie>, <devicetree@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<dri-devel@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>
Cc: Fabien Dessenne <fabien.dessenne@st.com>,
	Mickael Reulier <mickael.reulier@st.com>,
	Gabriel Fernandez <gabriel.fernandez@st.com>,
	Ludovic Barre <ludovic.barre@st.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>
Subject: [PATCH v1 1/2] dt-bindings: display: stm32: add a 2nd endpoint
Date: Thu, 26 Oct 2017 13:48:08 +0200	[thread overview]
Message-ID: <1509018489-19641-2-git-send-email-philippe.cornu@st.com> (raw)
In-Reply-To: <1509018489-19641-1-git-send-email-philippe.cornu@st.com>

ltdc can have up to 2 endpoints:
 - dpi external gpios: for rgb panels or external bridge ICs.
 - dpi internal ios: connected internally to dsi.

Note: Refer to the reference manual to know if the dsi is
present on your device.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
---
 Documentation/devicetree/bindings/display/st,stm32-ltdc.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
index 74b5ac7..0292522 100644
--- a/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
+++ b/Documentation/devicetree/bindings/display/st,stm32-ltdc.txt
@@ -10,7 +10,11 @@
       - "lcd" for the clock feeding the output pixel clock & IP clock.
   - resets: reset to be used by the device (defined by use of RCC macro).
   Required nodes:
-    - Video port for RGB output.
+  - Video port for DPI RGB output: ltdc has one video port with up to 2
+    endpoints:
+      - for external dpi rgb panel or bridge, using gpios.
+      - for internal dpi input of the MIPI DSI host controller.
+      Note: These 2 endpoints cannot be activated simultaneously.
 
 * STMicroelectronics STM32 DSI controller specific extensions to Synopsys
   DesignWare MIPI DSI host controller
-- 
1.9.1

  reply	other threads:[~2017-10-26 11:49 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-26 11:48 [PATCH v1 0/2] drm/stm: ltdc: add a 2nd endpoint Philippe Cornu
2017-10-26 11:48 ` Philippe Cornu [this message]
2017-10-27 14:38   ` [PATCH v1 1/2] dt-bindings: display: stm32: " Rob Herring
2017-11-07 13:58     ` Benjamin Gaignard
2017-10-26 11:48 ` [PATCH v1 2/2] drm/stm: ltdc: " Philippe Cornu
2017-11-07 13:58   ` Benjamin Gaignard

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