linux-kernel - [PATCH v3 2/2] arm64: dts: meson-gx: add support for simplefb

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Message-Id: <20190116124030.16882-3-mjourdan@baylibre.com>
Date:   Wed, 16 Jan 2019 13:40:30 +0100
From:   Maxime Jourdan <mjourdan@...libre.com>
To:     Kevin Hilman <khilman@...libre.com>
Cc:     Maxime Jourdan <mjourdan@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org
Subject: [PATCH v3 2/2] arm64: dts: meson-gx: add support for simplefb

SimpleFB allows transferring a framebuffer from the firmware/bootloader
to the kernel, while making sure the related clocks and power supplies
stay enabled.

Add nodes for CVBS and HDMI Simple Framebuffers.

Signed-off-by: Maxime Jourdan <mjourdan@...libre.com>
---
 arch/arm64/boot/dts/amlogic/meson-gx.dtsi   | 22 +++++++++++++++++++++
 arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi |  6 ++++++
 arch/arm64/boot/dts/amlogic/meson-gxl.dtsi  |  6 ++++++
 3 files changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 44c5c51ff1fa..a6ffdbba37b9 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -50,6 +50,28 @@
 		};
 	};
 
+	chosen {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		simplefb_cvbs: framebuffer-cvbs {
+			compatible = "amlogic,simple-framebuffer",
+				     "simple-framebuffer";
+			amlogic,pipeline = "vpu-cvbs";
+			power-domains = <&pwrc_vpu>;
+			status = "disabled";
+		};
+
+		simplefb_hdmi: framebuffer-hdmi {
+			compatible = "amlogic,simple-framebuffer",
+				     "simple-framebuffer";
+			amlogic,pipeline = "vpu-hdmi";
+			power-domains = <&pwrc_vpu>;
+			status = "disabled";
+		};
+	};
+
 	cpus {
 		#address-cells = <0x2>;
 		#size-cells = <0x0>;
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index a7b883ced0a8..a60d3652beee 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -784,6 +784,12 @@
 	resets = <&reset RESET_SD_EMMC_C>;
 };
 
+&simplefb_hdmi {
+	clocks = <&clkc CLKID_HDMI_PCLK>,
+		 <&clkc CLKID_CLK81>,
+		 <&clkc CLKID_GCLK_VENCI_INT0>;
+};
+
 &spicc {
 	clocks = <&clkc CLKID_SPICC>;
 	clock-names = "core";
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
index d5c3d78aafeb..3093ae421b17 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
@@ -787,6 +787,12 @@
 	resets = <&reset RESET_SD_EMMC_C>;
 };
 
+&simplefb_hdmi {
+	clocks = <&clkc CLKID_HDMI_PCLK>,
+		 <&clkc CLKID_CLK81>,
+		 <&clkc CLKID_GCLK_VENCI_INT0>;
+};
+
 &spicc {
 	clocks = <&clkc CLKID_SPICC>;
 	clock-names = "core";
-- 
2.20.1