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-rw-r--r--Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml167
-rw-r--r--Documentation/devicetree/bindings/dma/ti/k3-pktdma.yaml175
-rw-r--r--Documentation/devicetree/bindings/dma/ti/k3-udma.yaml186
3 files changed, 528 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml b/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml
new file mode 100644
index 000000000..08627d91e
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ti/k3-bcdma.yaml
@@ -0,0 +1,167 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 Texas Instruments Incorporated
+# Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/ti/k3-bcdma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 DMSS BCDMA Device Tree Bindings
+
+maintainers:
+ - Peter Ujfalusi <peter.ujfalusi@gmail.com>
+
+description: |
+ The Block Copy DMA (BCDMA) is intended to perform similar functions as the TR
+ mode channels of K3 UDMA-P.
+ BCDMA includes block copy channels and Split channels.
+
+ Block copy channels mainly used for memory to memory transfers, but with
+ optional triggers a block copy channel can service peripherals by accessing
+ directly to memory mapped registers or area.
+
+ Split channels can be used to service PSI-L based peripherals.
+ The peripherals can be PSI-L native or legacy, non PSI-L native peripherals
+ with PDMAs. PDMA is tasked to act as a bridge between the PSI-L fabric and the
+ legacy peripheral.
+
+ PDMAs can be configured via BCDMA split channel's peer registers to match with
+ the configuration of the legacy peripheral.
+
+allOf:
+ - $ref: /schemas/dma/dma-controller.yaml#
+ - $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#
+
+properties:
+ compatible:
+ const: ti,am64-dmss-bcdma
+
+ "#dma-cells":
+ const: 3
+ description: |
+ cell 1: type of the BCDMA channel to be used to service the peripheral:
+ 0 - split channel
+ 1 - block copy channel using global trigger 1
+ 2 - block copy channel using global trigger 2
+ 3 - block copy channel using local trigger
+
+ cell 2: parameter for the channel:
+ if cell 1 is 0 (split channel):
+ PSI-L thread ID of the remote (to BCDMA) end.
+ Valid ranges for thread ID depends on the data movement direction:
+ for source thread IDs (rx): 0 - 0x7fff
+ for destination thread IDs (tx): 0x8000 - 0xffff
+
+ Please refer to the device documentation for the PSI-L thread map and
+ also the PSI-L peripheral chapter for the correct thread ID.
+ if cell 1 is 1 or 2 (block copy channel using global trigger):
+ Unused, ignored
+
+ The trigger must be configured for the channel externally to BCDMA,
+ channels using global triggers should not be requested directly, but
+ via DMA event router.
+ if cell 1 is 3 (block copy channel using local trigger):
+ bchan number of the locally triggered channel
+
+ cell 3: ASEL value for the channel
+
+ reg:
+ maxItems: 5
+
+ reg-names:
+ items:
+ - const: gcfg
+ - const: bchanrt
+ - const: rchanrt
+ - const: tchanrt
+ - const: ringrt
+
+ msi-parent: true
+
+ ti,asel:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: ASEL value for non slave channels
+
+ ti,sci-rm-range-bchan:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of BCDMA block-copy channel resource subtypes for resource
+ allocation for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+ ti,sci-rm-range-tchan:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of BCDMA split tx channel resource subtypes for resource allocation
+ for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+ ti,sci-rm-range-rchan:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of BCDMA split rx channel resource subtypes for resource allocation
+ for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+required:
+ - compatible
+ - "#dma-cells"
+ - reg
+ - reg-names
+ - msi-parent
+ - ti,sci
+ - ti,sci-dev-id
+ - ti,sci-rm-range-bchan
+ - ti,sci-rm-range-tchan
+ - ti,sci-rm-range-rchan
+
+unevaluatedProperties: false
+
+examples:
+ - |+
+ cbass_main {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ main_dmss {
+ compatible = "simple-mfd";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ dma-ranges;
+ ranges;
+
+ ti,sci-dev-id = <25>;
+
+ main_bcdma: dma-controller@485c0100 {
+ compatible = "ti,am64-dmss-bcdma";
+
+ reg = <0x0 0x485c0100 0x0 0x100>,
+ <0x0 0x4c000000 0x0 0x20000>,
+ <0x0 0x4a820000 0x0 0x20000>,
+ <0x0 0x4aa40000 0x0 0x20000>,
+ <0x0 0x4bc00000 0x0 0x100000>;
+ reg-names = "gcfg", "bchanrt", "rchanrt", "tchanrt", "ringrt";
+ msi-parent = <&inta_main_dmss>;
+ #dma-cells = <3>;
+
+ ti,sci = <&dmsc>;
+ ti,sci-dev-id = <26>;
+
+ ti,sci-rm-range-bchan = <0x20>; /* BLOCK_COPY_CHAN */
+ ti,sci-rm-range-rchan = <0x21>; /* SPLIT_TR_RX_CHAN */
+ ti,sci-rm-range-tchan = <0x22>; /* SPLIT_TR_TX_CHAN */
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/dma/ti/k3-pktdma.yaml b/Documentation/devicetree/bindings/dma/ti/k3-pktdma.yaml
new file mode 100644
index 000000000..507d16d84
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ti/k3-pktdma.yaml
@@ -0,0 +1,175 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2020 Texas Instruments Incorporated
+# Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/ti/k3-pktdma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 DMSS PKTDMA Device Tree Bindings
+
+maintainers:
+ - Peter Ujfalusi <peter.ujfalusi@gmail.com>
+
+description: |
+ The Packet DMA (PKTDMA) is intended to perform similar functions as the packet
+ mode channels of K3 UDMA-P.
+ PKTDMA only includes Split channels to service PSI-L based peripherals.
+
+ The peripherals can be PSI-L native or legacy, non PSI-L native peripherals
+ with PDMAs. PDMA is tasked to act as a bridge between the PSI-L fabric and the
+ legacy peripheral.
+
+ PDMAs can be configured via PKTDMA split channel's peer registers to match
+ with the configuration of the legacy peripheral.
+
+allOf:
+ - $ref: /schemas/dma/dma-controller.yaml#
+ - $ref: /schemas/arm/keystone/ti,k3-sci-common.yaml#
+
+properties:
+ compatible:
+ const: ti,am64-dmss-pktdma
+
+ "#dma-cells":
+ const: 2
+ description: |
+ The first cell is the PSI-L thread ID of the remote (to PKTDMA) end.
+ Valid ranges for thread ID depends on the data movement direction:
+ for source thread IDs (rx): 0 - 0x7fff
+ for destination thread IDs (tx): 0x8000 - 0xffff
+
+ Please refer to the device documentation for the PSI-L thread map and also
+ the PSI-L peripheral chapter for the correct thread ID.
+
+ The second cell is the ASEL value for the channel
+
+ reg:
+ maxItems: 4
+
+ reg-names:
+ items:
+ - const: gcfg
+ - const: rchanrt
+ - const: tchanrt
+ - const: ringrt
+
+ msi-parent: true
+
+ ti,sci-rm-range-tchan:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of PKTDMA split tx channel resource subtypes for resource allocation
+ for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+ ti,sci-rm-range-tflow:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of PKTDMA split tx flow resource subtypes for resource allocation
+ for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+ ti,sci-rm-range-rchan:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of PKTDMA split rx channel resource subtypes for resource allocation
+ for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+ ti,sci-rm-range-rflow:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ description: |
+ Array of PKTDMA split rx flow resource subtypes for resource allocation
+ for this host
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+ items:
+ maximum: 0x3f
+
+required:
+ - compatible
+ - "#dma-cells"
+ - reg
+ - reg-names
+ - msi-parent
+ - ti,sci
+ - ti,sci-dev-id
+ - ti,sci-rm-range-tchan
+ - ti,sci-rm-range-tflow
+ - ti,sci-rm-range-rchan
+ - ti,sci-rm-range-rflow
+
+unevaluatedProperties: false
+
+examples:
+ - |+
+ cbass_main {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ main_dmss {
+ compatible = "simple-mfd";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ dma-ranges;
+ ranges;
+
+ ti,sci-dev-id = <25>;
+
+ main_pktdma: dma-controller@485c0000 {
+ compatible = "ti,am64-dmss-pktdma";
+
+ reg = <0x0 0x485c0000 0x0 0x100>,
+ <0x0 0x4a800000 0x0 0x20000>,
+ <0x0 0x4aa00000 0x0 0x40000>,
+ <0x0 0x4b800000 0x0 0x400000>;
+ reg-names = "gcfg", "rchanrt", "tchanrt", "ringrt";
+ msi-parent = <&inta_main_dmss>;
+ #dma-cells = <2>;
+
+ ti,sci = <&dmsc>;
+ ti,sci-dev-id = <30>;
+
+ ti,sci-rm-range-tchan = <0x23>, /* UNMAPPED_TX_CHAN */
+ <0x24>, /* CPSW_TX_CHAN */
+ <0x25>, /* SAUL_TX_0_CHAN */
+ <0x26>, /* SAUL_TX_1_CHAN */
+ <0x27>, /* ICSSG_0_TX_CHAN */
+ <0x28>; /* ICSSG_1_TX_CHAN */
+ ti,sci-rm-range-tflow = <0x10>, /* RING_UNMAPPED_TX_CHAN */
+ <0x11>, /* RING_CPSW_TX_CHAN */
+ <0x12>, /* RING_SAUL_TX_0_CHAN */
+ <0x13>, /* RING_SAUL_TX_1_CHAN */
+ <0x14>, /* RING_ICSSG_0_TX_CHAN */
+ <0x15>; /* RING_ICSSG_1_TX_CHAN */
+ ti,sci-rm-range-rchan = <0x29>, /* UNMAPPED_RX_CHAN */
+ <0x2b>, /* CPSW_RX_CHAN */
+ <0x2d>, /* SAUL_RX_0_CHAN */
+ <0x2f>, /* SAUL_RX_1_CHAN */
+ <0x31>, /* SAUL_RX_2_CHAN */
+ <0x33>, /* SAUL_RX_3_CHAN */
+ <0x35>, /* ICSSG_0_RX_CHAN */
+ <0x37>; /* ICSSG_1_RX_CHAN */
+ ti,sci-rm-range-rflow = <0x2a>, /* FLOW_UNMAPPED_RX_CHAN */
+ <0x2c>, /* FLOW_CPSW_RX_CHAN */
+ <0x2e>, /* FLOW_SAUL_RX_0/1_CHAN */
+ <0x32>, /* FLOW_SAUL_RX_2/3_CHAN */
+ <0x36>, /* FLOW_ICSSG_0_RX_CHAN */
+ <0x38>; /* FLOW_ICSSG_1_RX_CHAN */
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml b/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml
new file mode 100644
index 000000000..6a09bbf83
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ti/k3-udma.yaml
@@ -0,0 +1,186 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2019 Texas Instruments Incorporated
+# Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/dma/ti/k3-udma.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments K3 NAVSS Unified DMA Device Tree Bindings
+
+maintainers:
+ - Peter Ujfalusi <peter.ujfalusi@gmail.com>
+
+description: |
+ The UDMA-P is intended to perform similar (but significantly upgraded)
+ functions as the packet-oriented DMA used on previous SoC devices. The UDMA-P
+ module supports the transmission and reception of various packet types.
+ The UDMA-P architecture facilitates the segmentation and reassembly of SoC DMA
+ data structure compliant packets to/from smaller data blocks that are natively
+ compatible with the specific requirements of each connected peripheral.
+ Multiple Tx and Rx channels are provided within the DMA which allow multiple
+ segmentation or reassembly operations to be ongoing. The DMA controller
+ maintains state information for each of the channels which allows packet
+ segmentation and reassembly operations to be time division multiplexed between
+ channels in order to share the underlying DMA hardware. An external DMA
+ scheduler is used to control the ordering and rate at which this multiplexing
+ occurs for Transmit operations. The ordering and rate of Receive operations
+ is indirectly controlled by the order in which blocks are pushed into the DMA
+ on the Rx PSI-L interface.
+
+ The UDMA-P also supports acting as both a UTC and UDMA-C for its internal
+ channels. Channels in the UDMA-P can be configured to be either Packet-Based
+ or Third-Party channels on a channel by channel basis.
+
+ All transfers within NAVSS is done between PSI-L source and destination
+ threads.
+ The peripherals serviced by UDMA can be PSI-L native (sa2ul, cpsw, etc) or
+ legacy, non PSI-L native peripherals. In the later case a special, small PDMA
+ is tasked to act as a bridge between the PSI-L fabric and the legacy
+ peripheral.
+
+ PDMAs can be configured via UDMAP peer registers to match with the
+ configuration of the legacy peripheral.
+
+allOf:
+ - $ref: "../dma-controller.yaml#"
+
+properties:
+ "#dma-cells":
+ minimum: 1
+ maximum: 2
+ description: |
+ The cell is the PSI-L thread ID of the remote (to UDMAP) end.
+ Valid ranges for thread ID depends on the data movement direction:
+ for source thread IDs (rx): 0 - 0x7fff
+ for destination thread IDs (tx): 0x8000 - 0xffff
+
+ Please refer to the device documentation for the PSI-L thread map and also
+ the PSI-L peripheral chapter for the correct thread ID.
+
+ When #dma-cells is 2, the second parameter is the channel ATYPE.
+
+ compatible:
+ enum:
+ - ti,am654-navss-main-udmap
+ - ti,am654-navss-mcu-udmap
+ - ti,j721e-navss-main-udmap
+ - ti,j721e-navss-mcu-udmap
+
+ reg:
+ maxItems: 3
+
+ reg-names:
+ items:
+ - const: gcfg
+ - const: rchanrt
+ - const: tchanrt
+
+ msi-parent: true
+
+ ti,sci:
+ description: phandle to TI-SCI compatible System controller node
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ ti,sci-dev-id:
+ description: TI-SCI device id of UDMAP
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ ti,ringacc:
+ description: phandle to the ring accelerator node
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ ti,sci-rm-range-tchan:
+ description: |
+ Array of UDMA tchan resource subtypes for resource allocation for this
+ host
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+
+ ti,sci-rm-range-rchan:
+ description: |
+ Array of UDMA rchan resource subtypes for resource allocation for this
+ host
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+
+ ti,sci-rm-range-rflow:
+ description: |
+ Array of UDMA rflow resource subtypes for resource allocation for this
+ host
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ minItems: 1
+ # Should be enough
+ maxItems: 255
+
+required:
+ - compatible
+ - "#dma-cells"
+ - reg
+ - reg-names
+ - msi-parent
+ - ti,sci
+ - ti,sci-dev-id
+ - ti,ringacc
+ - ti,sci-rm-range-tchan
+ - ti,sci-rm-range-rchan
+ - ti,sci-rm-range-rflow
+
+if:
+ properties:
+ "#dma-cells":
+ const: 2
+then:
+ properties:
+ ti,udma-atype:
+ description: ATYPE value which should be used by non slave channels
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ required:
+ - ti,udma-atype
+
+unevaluatedProperties: false
+
+examples:
+ - |+
+ cbass_main {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cbass_main_navss: navss@30800000 {
+ compatible = "simple-mfd";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ dma-coherent;
+ dma-ranges;
+ ranges = <0x0 0x30800000 0x0 0x30800000 0x0 0x05000000>;
+
+ ti,sci-dev-id = <118>;
+
+ main_udmap: dma-controller@31150000 {
+ compatible = "ti,am654-navss-main-udmap";
+ reg = <0x0 0x31150000 0x0 0x100>,
+ <0x0 0x34000000 0x0 0x100000>,
+ <0x0 0x35000000 0x0 0x100000>;
+ reg-names = "gcfg", "rchanrt", "tchanrt";
+ #dma-cells = <1>;
+
+ ti,ringacc = <&ringacc>;
+
+ msi-parent = <&inta_main_udmass>;
+
+ ti,sci = <&dmsc>;
+ ti,sci-dev-id = <188>;
+
+ ti,sci-rm-range-tchan = <0x1>, /* TX_HCHAN */
+ <0x2>; /* TX_CHAN */
+ ti,sci-rm-range-rchan = <0x4>, /* RX_HCHAN */
+ <0x5>; /* RX_CHAN */
+ ti,sci-rm-range-rflow = <0x6>; /* GP RFLOW */
+ };
+ };
+ };