* [PATCH v2 1/2] dt-bindings: meson: add specific simplefb bindings
2019-01-07 9:53 [PATCH v2 0/2] arm64: dts: meson: add simple-framebuffer nodes Maxime Jourdan
@ 2019-01-07 9:53 ` Maxime Jourdan
2019-01-11 22:25 ` Rob Herring
2019-01-07 9:53 ` [PATCH v2 2/2] arm64: dts: meson-gx: add support for simplefb Maxime Jourdan
1 sibling, 1 reply; 5+ messages in thread
From: Maxime Jourdan @ 2019-01-07 9:53 UTC (permalink / raw)
To: Kevin Hilman
Cc: Maxime Jourdan, Rob Herring, Neil Armstrong, linux-kernel,
devicetree, linux-amlogic, linux-arm-kernel
Similar to simple-framebuffer-sunxi, we support different display pipelines
that the firmware is free to choose from.
This documents the "amlogic,simple-framebuffer" compatible and the
"amlogic,pipeline" extension.
Signed-off-by: Maxime Jourdan <mjourdan@baylibre.com>
---
.../display/simple-framebuffer-meson.txt | 33 +++++++++++++++++++
1 file changed, 33 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
new file mode 100644
index 000000000000..aaa6c24c8e70
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/simple-framebuffer-meson.txt
@@ -0,0 +1,33 @@
+Meson specific Simple Framebuffer bindings
+
+This binding documents meson specific extensions to the simple-framebuffer
+bindings. The meson simplefb u-boot code relies on the devicetree containing
+pre-populated simplefb nodes.
+
+These extensions are intended so that u-boot can select the right node based
+on which pipeline is being used. As such they are solely intended for
+firmware / bootloader use, and the OS should ignore them.
+
+Required properties:
+- compatible: "amlogic,simple-framebuffer", "simple-framebuffer"
+- amlogic,pipeline, one of:
+ "vpu-cvbs"
+ "vpu-hdmi"
+
+Example:
+
+chosen {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ simplefb_hdmi: framebuffer-hdmi {
+ compatible = "amlogic,simple-framebuffer",
+ "simple-framebuffer";
+ amlogic,pipeline = "vpu-hdmi";
+ clocks = <&clkc CLKID_HDMI_PCLK>,
+ <&clkc CLKID_CLK81>,
+ <&clkc CLKID_GCLK_VENCI_INT0>;
+ power-domains = <&pwrc_vpu>;
+ };
+};
--
2.20.1
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^ permalink raw reply related [flat|nested] 5+ messages in thread* [PATCH v2 2/2] arm64: dts: meson-gx: add support for simplefb
2019-01-07 9:53 [PATCH v2 0/2] arm64: dts: meson: add simple-framebuffer nodes Maxime Jourdan
2019-01-07 9:53 ` [PATCH v2 1/2] dt-bindings: meson: add specific simplefb bindings Maxime Jourdan
@ 2019-01-07 9:53 ` Maxime Jourdan
1 sibling, 0 replies; 5+ messages in thread
From: Maxime Jourdan @ 2019-01-07 9:53 UTC (permalink / raw)
To: Kevin Hilman
Cc: Maxime Jourdan, devicetree, Neil Armstrong, linux-kernel,
linux-amlogic, linux-arm-kernel
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@baylibre.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
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^ permalink raw reply related [flat|nested] 5+ messages in thread