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Message-ID: <20190103113841.15403-3-james.qian.wang@arm.com>
Date: Thu, 3 Jan 2019 11:40:04 +0000
From: "james qian wang (Arm Technology China)" <james.qian.wang@....com>
To: Liviu Dudau <Liviu.Dudau@....com>,
"daniel.vetter@...ll.ch" <daniel.vetter@...ll.ch>,
"rdunlap@...radead.org" <rdunlap@...radead.org>,
"robh+dt@...nel.org" <robh+dt@...nel.org>
CC: "Jonathan Chai (Arm Technology China)" <Jonathan.Chai@....com>,
Brian Starkey <Brian.Starkey@....com>,
"Julien Yin (Arm Technology China)" <Julien.Yin@....com>,
"thomas Sun (Arm Technology China)" <thomas.Sun@....com>,
Alexandru-Cosmin Gheorghe <Alexandru-Cosmin.Gheorghe@....com>,
"Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
Ayan Halder <Ayan.Halder@....com>,
"Tiannan Zhu (Arm Technology China)" <Tiannan.Zhu@....com>,
"Jin Gao (Arm Technology China)" <Jin.Gao@....com>,
"Yiqi Kang (Arm Technology China)" <Yiqi.Kang@....com>,
nd <nd@....com>, "malidp@...s.arm.com" <malidp@...s.arm.com>,
"maarten.lankhorst@...ux.intel.com"
<maarten.lankhorst@...ux.intel.com>,
"maxime.ripard@...tlin.com" <maxime.ripard@...tlin.com>,
"sean@...rly.run" <sean@...rly.run>,
"corbet@....net" <corbet@....net>,
"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
"mchehab+samsung@...nel.org" <mchehab+samsung@...nel.org>,
"davem@...emloft.net" <davem@...emloft.net>,
"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
"nicolas.ferre@...rochip.com" <nicolas.ferre@...rochip.com>,
"arnd@...db.de" <arnd@...db.de>,
Mark Rutland <Mark.Rutland@....com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
"airlied@...ux.ie" <airlied@...ux.ie>,
"yamada.masahiro@...ionext.com" <yamada.masahiro@...ionext.com>,
"james qian wang (Arm Technology China)" <james.qian.wang@....com>
Subject: [PATCH v4 2/9] dt/bindings: drm/komeda: Add DT bindings for ARM
display processor D71
From: "james qian wang (Arm Technology China)" <james.qian.wang@....com>
Add DT bindings documentation for the ARM display processor D71 and later
IPs.
Changes in v4:
- Deleted unnecessary address-cells, size-cells [Liviu Dudau]
Changes in v3:
- Deleted unnecessary property: interrupt-names.
- Dropped 'ports' and moving 'port' up a level.
Signed-off-by: James Qian Wang (Arm Technology China) <james.qian.wang@....com>
Reviewed-by: Liviu Dudau <liviu.dudau@....com>
---
.../bindings/display/arm/arm,komeda.txt | 73 +++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/arm/arm,komeda.txt
diff --git a/Documentation/devicetree/bindings/display/arm/arm,komeda.txt b/Documentation/devicetree/bindings/display/arm/arm,komeda.txt
new file mode 100644
index 000000000000..919d651d3e8c
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/arm/arm,komeda.txt
@@ -0,0 +1,73 @@
+Device Tree bindings for Arm Komeda display driver
+
+Required properties:
+- compatible: Should be "arm,mali-d71"
+- reg: Physical base address and length of the registers in the system
+- interrupts: the interrupt line number of the device in the system
+- clocks: A list of phandle + clock-specifier pairs, one for each entry
+ in 'clock-names'
+- clock-names: A list of clock names. It should contain:
+ - "mclk": for the main processor clock
+ - "pclk": for the APB interface clock
+- #address-cells: Must be 1
+- #size-cells: Must be 0
+
+Required properties for sub-node: pipeline@nq
+Each device contains one or two pipeline sub-nodes (at least one), each
+pipeline node should provide properties:
+- reg: Zero-indexed identifier for the pipeline
+- clocks: A list of phandle + clock-specifier pairs, one for each entry
+ in 'clock-names'
+- clock-names: should contain:
+ - "pxclk": pixel clock
+ - "aclk": AXI interface clock
+
+- port: each pipeline connect to an encoder input port. The connection is
+ modeled using the OF graph bindings specified in
+ Documentation/devicetree/bindings/graph.txt
+
+Optional properties:
+ - memory-region: phandle to a node describing memory (see
+ Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt)
+ to be used for the framebuffer; if not present, the framebuffer may
+ be located anywhere in memory.
+
+Example:
+/ {
+ ...
+
+ dp0: display@...000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "arm,mali-d71";
+ reg = <0xc00000 0x20000>;
+ interrupts = <0 168 4>;
+ clocks = <&dpu_mclk>, <&dpu_aclk>;
+ clock-names = "mclk", "pclk";
+
+ dp0_pipe0: pipeline@0 {
+ clocks = <&fpgaosc2>, <&dpu_aclk>;
+ clock-names = "pxclk", "aclk";
+ reg = <0>;
+
+ port@0 {
+ dp0_pipe0_out: endpoint {
+ remote-endpoint = <&db_dvi0_in>;
+ };
+ };
+ };
+
+ dp0_pipe1: pipeline@1 {
+ clocks = <&fpgaosc2>, <&dpu_aclk>;
+ clock-names = "pxclk", "aclk";
+ reg = <1>;
+
+ port@0 {
+ dp0_pipe1_out: endpoint {
+ remote-endpoint = <&db_dvi1_in>;
+ };
+ };
+ };
+ };
+ ...
+};
--
2.17.1
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