linux-kernel - [PATCH 5/6] ARM: dts: sun7i: Add DRAM gates

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Message-Id: <1449306009-2627-6-git-send-email-wens@csie.org>
Date:	Sat,  5 Dec 2015 17:00:08 +0800
From:	Chen-Yu Tsai <wens@...e.org>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Emilio Lopez <emilio@...pez.com.ar>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
Cc:	Chen-Yu Tsai <wens@...e.org>, linux-clk@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-sunxi@...glegroups.com
Subject: [PATCH 5/6] ARM: dts: sun7i: Add DRAM gates

The DRAM gates controls direct memory access for some peripherals.
These peripherals include the display pipeline, so add the required
gates to the simplefb nodes as well.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 arch/arm/boot/dts/sun7i-a20.dtsi | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/sun7i-a20.dtsi b/arch/arm/boot/dts/sun7i-a20.dtsi
index e02eb720c4fc..21169c0a6627 100644
--- a/arch/arm/boot/dts/sun7i-a20.dtsi
+++ b/arch/arm/boot/dts/sun7i-a20.dtsi
@@ -68,7 +68,7 @@
 				     "simple-framebuffer";
 			allwinner,pipeline = "de_be0-lcd0-hdmi";
 			clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 43>,
-				 <&ahb_gates 44>;
+				 <&ahb_gates 44>, <&dram_gates 26>;
 			status = "disabled";
 		};
 
@@ -76,7 +76,8 @@
 			compatible = "allwinner,simple-framebuffer",
 				     "simple-framebuffer";
 			allwinner,pipeline = "de_be0-lcd0";
-			clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 44>;
+			clocks = <&pll5 1>, <&ahb_gates 36>, <&ahb_gates 44>,
+				 <&dram_gates 26>;
 			status = "disabled";
 		};
 
@@ -85,7 +86,7 @@
 				     "simple-framebuffer";
 			allwinner,pipeline = "de_be0-lcd0-tve0";
 			clocks = <&pll5 1>, <&ahb_gates 34>, <&ahb_gates 36>,
-				 <&ahb_gates 44>;
+				 <&ahb_gates 44>, <&dram_gates 26>;
 			status = "disabled";
 		};
 	};
@@ -501,6 +502,31 @@
 			clock-output-names = "spi3";
 		};
 
+		dram_gates: clk@...20100 {
+			#clock-cells = <1>;
+			compatible = "allwinner,sun4i-a10-dram-gates-clk";
+			reg = <0x01c20100 0x4>;
+			clocks = <&pll5 0>;
+			clock-indices = <0>,
+					<1>, <2>,
+					<3>,
+					<4>,
+					<5>, <6>,
+					<15>,
+					<24>, <25>,
+					<26>, <27>,
+					<28>, <29>;
+			clock-output-names = "dram_ve",
+					     "dram_csi0", "dram_csi1",
+					     "dram_ts",
+					     "dram_tvd",
+					     "dram_tve0", "dram_tve1",
+					     "dram_output",
+					     "dram_de_fe1", "dram_de_fe0",
+					     "dram_de_be0", "dram_de_be1",
+					     "dram_de_mp", "dram_ace";
+		};
+
 		codec_clk: clk@...20140 {
 			#clock-cells = <0>;
 			compatible = "allwinner,sun4i-a10-codec-clk";
-- 
2.6.2

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