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Message-ID: <20201115181242.GA30004@earth.li>
Date: Sun, 15 Nov 2020 18:12:42 +0000
From: Jonathan McDowell <noodles@...th.li>
To: Vinod Koul <vkoul@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
linux-arm-msm@...r.kernel.org, dmaengine@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dt-bindings: dmaengine: Convert Qualcomm ADM bindings to yaml
Converts the device tree bindings for the Qualcomm Application Data
Mover (ADM) DMA controller over to YAML schemas.
Signed-off-by: Jonathan McDowell <noodles@...th.li>
---
.../devicetree/bindings/dma/qcom,adm.yaml | 102 ++++++++++++++++++
.../devicetree/bindings/dma/qcom_adm.txt | 61 -----------
2 files changed, 102 insertions(+), 61 deletions(-)
create mode 100644 Documentation/devicetree/bindings/dma/qcom,adm.yaml
delete mode 100644 Documentation/devicetree/bindings/dma/qcom_adm.txt
diff --git a/Documentation/devicetree/bindings/dma/qcom,adm.yaml b/Documentation/devicetree/bindings/dma/qcom,adm.yaml
new file mode 100644
index 000000000000..353d85d3326d
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/qcom,adm.yaml
@@ -0,0 +1,102 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/qcom,adm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: QCOM ADM DMA Controller
+
+maintainers:
+ - Jonathan McDowell <noodles@...th.li>
+
+description: |
+ QCOM Application Data Mover (ADM) DMA controller found in the MSM8x60
+ and IPQ/APQ8064 platforms.
+
+properties:
+ compatible:
+ oneOf:
+ - const: qcom,adm
+
+ reg:
+ maxItems: 1
+ description:
+ Address range for DMA registers
+
+ interrupts:
+ maxItems: 1
+ description:
+ Should contain one interrupt shared by all channels
+
+ "#dma-cells":
+ const: 2
+ description:
+ First cell denotes the channel number. Second cell denotes CRCI
+ (client rate control interface) flow control assignment. If no
+ flow control is required, use 0.
+
+ clocks:
+ maxItems: 2
+ description:
+ Should contain the core clock and interface clock.
+
+ clock-names:
+ items:
+ - const: core
+ - const: iface
+
+ resets:
+ maxItems: 4
+ description:
+ Must contain an entry for each entry in reset names.
+
+ reset-names:
+ items:
+ - const: clk
+ - const: c0
+ - const: c1
+ - const: c2
+
+ qcom,ee:
+ maxItems: 1
+ description:
+ Indicates the security domain identifier used in the secure world.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+ - "#dma-cells"
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+ - qcom,ee
+ - resets
+ - reset-names
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+
+ adm_dma: dma@...00000 {
+ compatible = "qcom,adm";
+ reg = <0x18300000 0x100000>;
+ interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <2>;
+
+ clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>;
+ clock-names = "core", "iface";
+
+ resets = <&gcc ADM0_RESET>,
+ <&gcc ADM0_C0_RESET>,
+ <&gcc ADM0_C1_RESET>,
+ <&gcc ADM0_C2_RESET>;
+ reset-names = "clk", "c0", "c1", "c2";
+ qcom,ee = <0>;
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/dma/qcom_adm.txt b/Documentation/devicetree/bindings/dma/qcom_adm.txt
deleted file mode 100644
index 9d3b2f917b7b..000000000000
--- a/Documentation/devicetree/bindings/dma/qcom_adm.txt
+++ /dev/null
@@ -1,61 +0,0 @@
-QCOM ADM DMA Controller
-
-Required properties:
-- compatible: must contain "qcom,adm" for IPQ/APQ8064 and MSM8960
-- reg: Address range for DMA registers
-- interrupts: Should contain one interrupt shared by all channels
-- #dma-cells: must be <2>. First cell denotes the channel number. Second cell
- denotes CRCI (client rate control interface) flow control assignment.
-- clocks: Should contain the core clock and interface clock.
-- clock-names: Must contain "core" for the core clock and "iface" for the
- interface clock.
-- resets: Must contain an entry for each entry in reset names.
-- reset-names: Must include the following entries:
- - clk
- - c0
- - c1
- - c2
-- qcom,ee: indicates the security domain identifier used in the secure world.
-
-Example:
- adm_dma: dma@...00000 {
- compatible = "qcom,adm";
- reg = <0x18300000 0x100000>;
- interrupts = <0 170 0>;
- #dma-cells = <2>;
-
- clocks = <&gcc ADM0_CLK>, <&gcc ADM0_PBUS_CLK>;
- clock-names = "core", "iface";
-
- resets = <&gcc ADM0_RESET>,
- <&gcc ADM0_C0_RESET>,
- <&gcc ADM0_C1_RESET>,
- <&gcc ADM0_C2_RESET>;
- reset-names = "clk", "c0", "c1", "c2";
- qcom,ee = <0>;
- };
-
-DMA clients must use the format descripted in the dma.txt file, using a three
-cell specifier for each channel.
-
-Each dmas request consists of 3 cells:
- 1. phandle pointing to the DMA controller
- 2. channel number
- 3. CRCI assignment, if applicable. If no CRCI flow control is required, use 0.
- The CRCI is used for flow control. It identifies the peripheral device that
- is the source/destination for the transferred data.
-
-Example:
-
- spi4: spi@...80000 {
- spi-max-frequency = <50000000>;
-
- pinctrl-0 = <&spi_pins>;
- pinctrl-names = "default";
-
- cs-gpios = <&qcom_pinmux 20 0>;
-
- dmas = <&adm_dma 6 9>,
- <&adm_dma 5 10>;
- dma-names = "rx", "tx";
- };
--
2.29.2
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