[PATCH 1/8] dt-bindings: gpu: mali-midgard: Add resets property

From: "Clément Péron" <peron.clem@gmail.com>
To: Rob Herring <robh+dt@kernel.org>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Chen-Yu Tsai <wens@csie.org>, Icenowy Zheng <icenowy@aosc.io>,
	Jagan Teki <jagan@amarulasolutions.com>,
	Jernej Skrabec <jernej.skrabec@siol.net>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	dri-devel@lists.freedesktop.org, linux-sunxi@googlegroups.com,
	Neil Armstrong <narmstrong@baylibre.com>,
	Kevin Hilman <khilman@baylibre.com>
Subject: [PATCH 1/8] dt-bindings: gpu: mali-midgard: Add resets property
Date: Thu, 11 Apr 2019 01:25:36 +0200	[thread overview]
Message-ID: <20190410232543.13297-2-peron.clem@gmail.com> (raw)
In-Reply-To: <20190410232543.13297-1-peron.clem@gmail.com>

From: Neil Armstrong <narmstrong@baylibre.com>

The Amlogic ARM Mali Midgard requires reset controls to power on and
software reset the GPU, adds these as optional in the bindings.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
---
 .../devicetree/bindings/gpu/arm,mali-midgard.txt   | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt
index 18a2cde2e5f3..1b1a74129141 100644
--- a/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt
+++ b/Documentation/devicetree/bindings/gpu/arm,mali-midgard.txt
@@ -37,6 +37,20 @@ Optional properties:
 - operating-points-v2 : Refer to Documentation/devicetree/bindings/opp/opp.txt
   for details.
 
+- resets : Phandle of the GPU reset line.
+
+Vendor-specific bindings
+------------------------
+
+The Mali GPU is integrated very differently from one SoC to
+another. In order to accomodate those differences, you have the option
+to specify one more vendor-specific compatible, among:
+
+- "amlogic,meson-gxm-mali"
+  Required properties:
+  - resets : Should contain phandles of :
+    + GPU reset line
+    + GPU APB glue reset line
 
 Example for a Mali-T760:
 
-- 
2.17.1

