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Diffstat (limited to 'Documentation/devicetree/bindings/ata/ceva,ahci-1v84.yaml')
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diff --git a/Documentation/devicetree/bindings/ata/ceva,ahci-1v84.yaml b/Documentation/devicetree/bindings/ata/ceva,ahci-1v84.yaml new file mode 100644 index 000000000..71364c608 --- /dev/null +++ b/Documentation/devicetree/bindings/ata/ceva,ahci-1v84.yaml @@ -0,0 +1,189 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/ata/ceva,ahci-1v84.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Ceva AHCI SATA Controller + +maintainers: + - Piyush Mehta <piyush.mehta@xilinx.com> + +description: | + The Ceva SATA controller mostly conforms to the AHCI interface with some + special extensions to add functionality, is a high-performance dual-port + SATA host controller with an AHCI compliant command layer which supports + advanced features such as native command queuing and frame information + structure (FIS) based switching for systems employing port multipliers. + +properties: + compatible: + const: ceva,ahci-1v84 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + dma-coherent: true + + interrupts: + maxItems: 1 + + iommus: + maxItems: 4 + + power-domains: + maxItems: 1 + + ceva,p0-cominit-params: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: | + OOB timing value for COMINIT parameter for port 0. + The fields for the above parameter must be as shown below:- + ceva,p0-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>; + items: + - description: CINMP - COMINIT Negate Minimum Period. + - description: CIBGN - COMINIT Burst Gap Nominal. + - description: CIBGMX - COMINIT Burst Gap Maximum. + - description: CIBGMN - COMINIT Burst Gap Minimum. + + ceva,p0-comwake-params: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: | + OOB timing value for COMWAKE parameter for port 0. + The fields for the above parameter must be as shown below:- + ceva,p0-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>; + items: + - description: CWBGMN - COMWAKE Burst Gap Minimum. + - description: CWBGMX - COMWAKE Burst Gap Maximum. + - description: CWBGN - COMWAKE Burst Gap Nominal. + - description: CWNMP - COMWAKE Negate Minimum Period. + + ceva,p0-burst-params: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: | + Burst timing value for COM parameter for port 0. + The fields for the above parameter must be as shown below:- + ceva,p0-burst-params = /bits/ 8 <BMX BNM SFD PTST>; + items: + - description: BMX - COM Burst Maximum. + - description: BNM - COM Burst Nominal. + - description: SFD - Signal Failure Detection value. + - description: PTST - Partial to Slumber timer value. + + ceva,p0-retry-params: + $ref: /schemas/types.yaml#/definitions/uint16-array + description: | + Retry interval timing value for port 0. + The fields for the above parameter must be as shown below:- + ceva,p0-retry-params = /bits/ 16 <RIT RCT>; + items: + - description: RIT - Retry Interval Timer. + - description: RCT - Rate Change Timer. + + ceva,p1-cominit-params: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: | + OOB timing value for COMINIT parameter for port 1. + The fields for the above parameter must be as shown below:- + ceva,p1-cominit-params = /bits/ 8 <CIBGMN CIBGMX CIBGN CINMP>; + items: + - description: CINMP - COMINIT Negate Minimum Period. + - description: CIBGN - COMINIT Burst Gap Nominal. + - description: CIBGMX - COMINIT Burst Gap Maximum. + - description: CIBGMN - COMINIT Burst Gap Minimum. + + ceva,p1-comwake-params: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: | + OOB timing value for COMWAKE parameter for port 1. + The fields for the above parameter must be as shown below:- + ceva,p1-comwake-params = /bits/ 8 <CWBGMN CWBGMX CWBGN CWNMP>; + items: + - description: CWBGMN - COMWAKE Burst Gap Minimum. + - description: CWBGMX - COMWAKE Burst Gap Maximum. + - description: CWBGN - COMWAKE Burst Gap Nominal. + - description: CWNMP - COMWAKE Negate Minimum Period. + + ceva,p1-burst-params: + $ref: /schemas/types.yaml#/definitions/uint8-array + description: | + Burst timing value for COM parameter for port 1. + The fields for the above parameter must be as shown below:- + ceva,p1-burst-params = /bits/ 8 <BMX BNM SFD PTST>; + items: + - description: BMX - COM Burst Maximum. + - description: BNM - COM Burst Nominal. + - description: SFD - Signal Failure Detection value. + - description: PTST - Partial to Slumber timer value. + + ceva,p1-retry-params: + $ref: /schemas/types.yaml#/definitions/uint16-array + description: | + Retry interval timing value for port 1. + The fields for the above parameter must be as shown below:- + ceva,pN-retry-params = /bits/ 16 <RIT RCT>; + items: + - description: RIT - Retry Interval Timer. + - description: RCT - Rate Change Timer. + + ceva,broken-gen2: + $ref: /schemas/types.yaml#/definitions/flag + description: | + limit to gen1 speed instead of gen2. + + phys: + maxItems: 1 + + phy-names: + items: + - const: sata-phy + + resets: + maxItems: 1 + +required: + - compatible + - reg + - clocks + - interrupts + - ceva,p0-cominit-params + - ceva,p0-comwake-params + - ceva,p0-burst-params + - ceva,p0-retry-params + - ceva,p1-cominit-params + - ceva,p1-comwake-params + - ceva,p1-burst-params + - ceva,p1-retry-params + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/xlnx-zynqmp-clk.h> + #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/power/xlnx-zynqmp-power.h> + #include <dt-bindings/reset/xlnx-zynqmp-resets.h> + #include <dt-bindings/clock/xlnx-zynqmp-clk.h> + #include <dt-bindings/phy/phy.h> + + sata: ahci@fd0c0000 { + compatible = "ceva,ahci-1v84"; + reg = <0xfd0c0000 0x200>; + interrupt-parent = <&gic>; + interrupts = <0 133 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&zynqmp_clk SATA_REF>; + ceva,p0-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>; + ceva,p0-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>; + ceva,p0-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>; + ceva,p0-retry-params = /bits/ 16 <0x0216 0x7F06>; + ceva,p1-cominit-params = /bits/ 8 <0x0F 0x25 0x18 0x29>; + ceva,p1-comwake-params = /bits/ 8 <0x04 0x0B 0x08 0x0F>; + ceva,p1-burst-params = /bits/ 8 <0x0A 0x08 0x4A 0x06>; + ceva,p1-retry-params = /bits/ 16 <0x0216 0x7F06>; + ceva,broken-gen2; + phys = <&psgtr 1 PHY_TYPE_SATA 1 1>; + resets = <&zynqmp_reset ZYNQMP_RESET_SATA>; + }; |