This rewrites the ST-Ericsson DMA40 bindings in YAML.
Cc: Lee Jones <lee.jones@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
.../devicetree/bindings/dma/ste-dma40.txt | 138 ---------------
.../bindings/dma/stericsson,dma40.yaml | 159 ++++++++++++++++++
2 files changed, 159 insertions(+), 138 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/dma/ste-dma40.txt
create mode 100644 Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
diff --git a/Documentation/devicetree/bindings/dma/ste-dma40.txt b/Documentation/devicetree/bindings/dma/ste-dma40.txt
deleted file mode 100644
index 99ab5c4d331e..000000000000
--- a/Documentation/devicetree/bindings/dma/ste-dma40.txt
+++ /dev/null
@@ -1,138 +0,0 @@
-* DMA40 DMA Controller
-
-Required properties:
-- compatible: "stericsson,dma40"
-- reg: Address range of the DMAC registers
-- reg-names: Names of the above areas to use during resource look-up
-- interrupt: Should contain the DMAC interrupt number
-- #dma-cells: must be <3>
-- memcpy-channels: Channels to be used for memcpy
-
-Optional properties:
-- dma-channels: Number of channels supported by hardware - if not present
- the driver will attempt to obtain the information from H/W
-- disabled-channels: Channels which can not be used
-
-Example:
-
- dma: dma-controller@801c0000 {
- compatible = "stericsson,db8500-dma40", "stericsson,dma40";
- reg = <0x801C0000 0x1000 0x40010000 0x800>;
- reg-names = "base", "lcpa";
- interrupt-parent = <&intc>;
- interrupts = <0 25 0x4>;
-
- #dma-cells = <2>;
- memcpy-channels = <56 57 58 59 60>;
- disabled-channels = <12>;
- dma-channels = <8>;
- };
-
-Clients
-Required properties:
-- dmas: Comma separated list of dma channel requests
-- dma-names: Names of the aforementioned requested channels
-
-Each dmas request consists of 4 cells:
- 1. A phandle pointing to the DMA controller
- 2. Device signal number, the signal line for single and burst requests
- connected from the device to the DMA40 engine
- 3. The DMA request line number (only when 'use fixed channel' is set)
- 4. A 32bit mask specifying; mode, direction and endianness
- [NB: This list will grow]
- 0x00000001: Mode:
- Logical channel when unset
- Physical channel when set
- 0x00000002: Direction:
- Memory to Device when unset
- Device to Memory when set
- 0x00000004: Endianness:
- Little endian when unset
- Big endian when set
- 0x00000008: Use fixed channel:
- Use automatic channel selection when unset
- Use DMA request line number when set
- 0x00000010: Set channel as high priority:
- Normal priority when unset
- High priority when set
-
-Existing signal numbers for the DB8500 ASIC. Unless specified, the signals are
-bidirectional, i.e. the same for RX and TX operations:
-
-0: SPI controller 0
-1: SD/MMC controller 0 (unused)
-2: SD/MMC controller 1 (unused)
-3: SD/MMC controller 2 (unused)
-4: I2C port 1
-5: I2C port 3
-6: I2C port 2
-7: I2C port 4
-8: Synchronous Serial Port SSP0
-9: Synchronous Serial Port SSP1
-10: Multi-Channel Display Engine MCDE RX
-11: UART port 2
-12: UART port 1
-13: UART port 0
-14: Multirate Serial Port MSP2
-15: I2C port 0
-16: USB OTG in/out endpoints 7 & 15
-17: USB OTG in/out endpoints 6 & 14
-18: USB OTG in/out endpoints 5 & 13
-19: USB OTG in/out endpoints 4 & 12
-20: SLIMbus or HSI channel 0
-21: SLIMbus or HSI channel 1
-22: SLIMbus or HSI channel 2
-23: SLIMbus or HSI channel 3
-24: Multimedia DSP SXA0
-25: Multimedia DSP SXA1
-26: Multimedia DSP SXA2
-27: Multimedia DSP SXA3
-28: SD/MM controller 2
-29: SD/MM controller 0
-30: MSP port 1 on DB8500 v1, MSP port 3 on DB8500 v2
-31: MSP port 0 or SLIMbus channel 0
-32: SD/MM controller 1
-33: SPI controller 2
-34: i2c3 RX2 TX2
-35: SPI controller 1
-36: USB OTG in/out endpoints 3 & 11
-37: USB OTG in/out endpoints 2 & 10
-38: USB OTG in/out endpoints 1 & 9
-39: USB OTG in/out endpoints 8
-40: SPI controller 3
-41: SD/MM controller 3
-42: SD/MM controller 4
-43: SD/MM controller 5
-44: Multimedia DSP SXA4
-45: Multimedia DSP SXA5
-46: SLIMbus channel 8 or Multimedia DSP SXA6
-47: SLIMbus channel 9 or Multimedia DSP SXA7
-48: Crypto Accelerator 1
-49: Crypto Accelerator 1 TX or Hash Accelerator 1 TX
-50: Hash Accelerator 1 TX
-51: memcpy TX (to be used by the DMA driver for memcpy operations)
-52: SLIMbus or HSI channel 4
-53: SLIMbus or HSI channel 5
-54: SLIMbus or HSI channel 6
-55: SLIMbus or HSI channel 7
-56: memcpy (to be used by the DMA driver for memcpy operations)
-57: memcpy (to be used by the DMA driver for memcpy operations)
-58: memcpy (to be used by the DMA driver for memcpy operations)
-59: memcpy (to be used by the DMA driver for memcpy operations)
-60: memcpy (to be used by the DMA driver for memcpy operations)
-61: Crypto Accelerator 0
-62: Crypto Accelerator 0 TX or Hash Accelerator 0 TX
-63: Hash Accelerator 0 TX
-
-Example:
-
- uart@80120000 {
- compatible = "arm,pl011", "arm,primecell";
- reg = <0x80120000 0x1000>;
- interrupts = <0 11 0x4>;
-
- dmas = <&dma 13 0 0x2>, /* Logical - DevToMem */
- <&dma 13 0 0x0>; /* Logical - MemToDev */
- dma-names = "rx", "rx";
-
- };
diff --git a/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
new file mode 100644
index 000000000000..8bddfb3b6fa0
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/stericsson,dma40.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/stericsson,dma40.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ST-Ericsson DMA40 DMA Engine
+
+maintainers:
+ - Linus Walleij <linus.walleij@xxxxxxxxxx>
+
+allOf:
+ - $ref: "dma-controller.yaml#"
+
+properties:
+ "#dma-cells":
+ const: 3
+ description: |
+ The first cell is the unique device channel number as indicated by this
+ table for DB8500 which is the only ASIC known to use DMA40:
+
+ 0: SPI controller 0
+ 1: SD/MMC controller 0 (unused)
+ 2: SD/MMC controller 1 (unused)
+ 3: SD/MMC controller 2 (unused)
+ 4: I2C port 1
+ 5: I2C port 3
+ 6: I2C port 2
+ 7: I2C port 4
+ 8: Synchronous Serial Port SSP0
+ 9: Synchronous Serial Port SSP1
+ 10: Multi-Channel Display Engine MCDE RX
+ 11: UART port 2
+ 12: UART port 1
+ 13: UART port 0
+ 14: Multirate Serial Port MSP2
+ 15: I2C port 0
+ 16: USB OTG in/out endpoints 7 & 15
+ 17: USB OTG in/out endpoints 6 & 14
+ 18: USB OTG in/out endpoints 5 & 13
+ 19: USB OTG in/out endpoints 4 & 12
+ 20: SLIMbus or HSI channel 0
+ 21: SLIMbus or HSI channel 1
+ 22: SLIMbus or HSI channel 2
+ 23: SLIMbus or HSI channel 3
+ 24: Multimedia DSP SXA0
+ 25: Multimedia DSP SXA1
+ 26: Multimedia DSP SXA2
+ 27: Multimedia DSP SXA3
+ 28: SD/MMC controller 2
+ 29: SD/MMC controller 0
+ 30: MSP port 1 on DB8500 v1, MSP port 3 on DB8500 v2
+ 31: MSP port 0 or SLIMbus channel 0
+ 32: SD/MMC controller 1
+ 33: SPI controller 2
+ 34: i2c3 RX2 TX2
+ 35: SPI controller 1
+ 36: USB OTG in/out endpoints 3 & 11
+ 37: USB OTG in/out endpoints 2 & 10
+ 38: USB OTG in/out endpoints 1 & 9
+ 39: USB OTG in/out endpoints 8
+ 40: SPI controller 3
+ 41: SD/MMC controller 3
+ 42: SD/MMC controller 4
+ 43: SD/MMC controller 5
+ 44: Multimedia DSP SXA4
+ 45: Multimedia DSP SXA5
+ 46: SLIMbus channel 8 or Multimedia DSP SXA6
+ 47: SLIMbus channel 9 or Multimedia DSP SXA7
+ 48: Crypto Accelerator 1
+ 49: Crypto Accelerator 1 TX or Hash Accelerator 1 TX
+ 50: Hash Accelerator 1 TX
+ 51: memcpy TX (to be used by the DMA driver for memcpy operations)
+ 52: SLIMbus or HSI channel 4
+ 53: SLIMbus or HSI channel 5
+ 54: SLIMbus or HSI channel 6
+ 55: SLIMbus or HSI channel 7
+ 56: memcpy (to be used by the DMA driver for memcpy operations)
+ 57: memcpy (to be used by the DMA driver for memcpy operations)
+ 58: memcpy (to be used by the DMA driver for memcpy operations)
+ 59: memcpy (to be used by the DMA driver for memcpy operations)
+ 60: memcpy (to be used by the DMA driver for memcpy operations)
+ 61: Crypto Accelerator 0
+ 62: Crypto Accelerator 0 TX or Hash Accelerator 0 TX
+ 63: Hash Accelerator 0 TX
+
+ The second cell is the DMA request line number. This is only used when
+ a fixed channel is allocated, and indicated by setting bit 3 in the
+ flags field (see below).
+
+ The third cell is a 32bit flags bitfield with the following possible
+ bits set:
+ 0x00000001 (bit 0) - mode:
+ Logical channel when unset
+ Physical channel when set
+ 0x00000002 (bit 1) - direction:
+ Memory to Device when unset
+ Device to Memory when set
+ 0x00000004 (bit 2) - endianness:
+ Little endian when unset
+ Big endian when set
+ 0x00000008 (bit 3) - use fixed channel:
+ Use automatic channel selection when unset
+ Use DMA request line number when set
+ 0x00000010 (bit 4) - set channel as high priority:
+ Normal priority when unset
+ High priority when set
+
+ compatible:
+ items:
+ - const: stericsson,db8500-dma40
+ - const: stericsson,dma40
+
+ reg:
+ items:
+ - description: DMA40 memory base
+ - description: LCPA memory base
+
+ reg-names:
+ items:
+ - const: base
+ - const: lcpa
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ memcpy-channels:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: Array of u32 elements indicating which channels on the DMA
+ engine are elegible for memcpy transfers
+
+required:
+ - "#dma-cells"
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - memcpy-channels
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/mfd/dbx500-prcmu.h>
+ dma-controller@801C0000 {
+ compatible = "stericsson,db8500-dma40", "stericsson,dma40";
+ reg = <0x801C0000 0x1000>, <0x40010000 0x800>;
+ reg-names = "base", "lcpa";
+ interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+ #dma-cells = <3>;
+ memcpy-channels = <56 57 58 59 60>;
+ clocks = <&prcmu_clk PRCMU_DMACLK>;
+ };
+...
--
2.35.3
