[PATCH linux dev-5.4 1/6] dt-bindings: soc: aspeed: xdma: Update to v11 upstream
Eddie James
eajames at linux.ibm.com
Wed May 6 03:29:53 AEST 2020
Switch the documentation to schema and update to the latest on the
upstream lists.
Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
.../devicetree/bindings/soc/aspeed/xdma.txt | 40 --------
.../devicetree/bindings/soc/aspeed/xdma.yaml | 103 +++++++++++++++++++++
2 files changed, 103 insertions(+), 40 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.txt
create mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.yaml
diff --git a/Documentation/devicetree/bindings/soc/aspeed/xdma.txt b/Documentation/devicetree/bindings/soc/aspeed/xdma.txt
deleted file mode 100644
index da62975..0000000
--- a/Documentation/devicetree/bindings/soc/aspeed/xdma.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-Aspeed AST25XX and AST26XX XDMA Engine
-
-The XDMA Engine embedded in the AST2500 and AST2600 SOCs can perform automatic
-DMA operations over PCI between the SOC (acting as a BMC) and a host processor.
-
-Required properties:
- - compatible : must be "aspeed,ast2500-xdma" or
- "aspeed,ast2600-xdma"
- - reg : contains the address and size of the memory region
- associated with the XDMA engine registers
- - clocks : clock specifier for the clock associated with the
- XDMA engine
- - resets : reset specifier for the syscon reset associated with
- the XDMA engine
- - interrupts-extended : two interrupt cells; the first specifies the global
- interrupt for the XDMA engine and the second
- specifies the PCI-E reset or PERST interrupt.
- - aspeed,scu : a phandle to the syscon node for the system control
- unit of the SOC
- - memory-region : a phandle to the reserved memory region to be used by
- the XDMA engine for DMA operations
-
-Optional properties:
- - pcie-device : should be either "bmc" or "vga", corresponding to
- which device should be used by the XDMA engine for
- DMA operations. If this property is not set, the XDMA
- engine will use the BMC PCI-E device.
-
-Example:
-
- xdma at 1e6e7000 {
- compatible = "aspeed,ast2500-xdma";
- reg = <0x1e6e7000 0x100>;
- clocks = <&syscon ASPEED_CLK_GATE_BCLK>;
- resets = <&syscon ASPEED_RESET_XDMA>;
- interrupts-extended = <&vic 6>, <&scu_ic ASPEED_AST2500_SCU_IC_PCIE_RESET_LO_TO_HI>;
- aspeed,scu = <&syscon>;
- pcie-device = "bmc";
- memory-region = <&vga_memory>;
- };
diff --git a/Documentation/devicetree/bindings/soc/aspeed/xdma.yaml b/Documentation/devicetree/bindings/soc/aspeed/xdma.yaml
new file mode 100644
index 0000000..4957435
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/aspeed/xdma.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/aspeed/xdma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Aspeed AST25XX and AST26XX XDMA Engine
+
+maintainers:
+ - Eddie James <eajames at linux.ibm.com>
+
+description: |
+ This binding describes the XDMA Engine embedded in the AST2500 and AST2600
+ SOCs. The XDMA engine can perform automatic DMA operations over PCI between
+ the SOC (acting as a BMC) and a host processor.
+
+properties:
+ compatible:
+ enum:
+ - aspeed,ast2500-xdma
+ - aspeed,ast2600-xdma
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ resets:
+ minItems: 1
+ maxItems: 2
+
+ reset-names:
+ maxItems: 2
+ items:
+ - const: device
+ - const: root-complex
+
+ interrupts:
+ maxItems: 2
+ items:
+ - description: global interrupt for the XDMA engine
+ - description: PCI-E reset or PERST interrupt
+
+ aspeed,scu:
+ description: a reference to the System Control Unit node of the Aspeed SOC.
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/phandle
+
+ aspeed,pcie-device:
+ description: describes which PCI-E device the XDMA engine should use
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/string
+ - enum: [ bmc, vga ]
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - resets
+ - interrupts-extended
+ - aspeed,scu
+ - memory-region
+
+if:
+ properties:
+ compatible:
+ contains:
+ const: aspeed,ast2600-xdma
+then:
+ required:
+ - reset-names
+
+examples:
+ - |
+ #include <dt-bindings/clock/ast2600-clock.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/aspeed-scu-ic.h>
+ syscon: syscon at 1e6e2000 {
+ reg = <0x1e6e2000 0x1000>;
+ ranges = <0 0x1e6e2000 0x1000>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ #clock-cells = <1>;
+ #reset-cells = <1>;
+ scu_ic0: interrupt-controller at 560 {
+ reg = <0x560 0x4>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ };
+ };
+ xdma at 1e6e7000 {
+ compatible = "aspeed,ast2600-xdma";
+ reg = <0x1e6e7000 0x100>;
+ clocks = <&syscon ASPEED_CLK_GATE_BCLK>;
+ resets = <&syscon ASPEED_RESET_DEV_XDMA>, <&syscon ASPEED_RESET_RC_XDMA>;
+ reset-names = "device", "root-complex";
+ interrupts-extended = <&gic GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
+ <&scu_ic0 ASPEED_AST2600_SCU_IC0_PCIE_PERST_LO_TO_HI>;
+ aspeed,scu = <&syscon>;
+ aspeed,pcie-device = "bmc";
+ memory-region = <&vga_memory>;
+ };
--
1.8.3.1
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