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author | Sven Peter <sven@svenpeter.dev> | 2022-05-01 17:55:09 +0300 |
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committer | Sven Peter <sven@svenpeter.dev> | 2022-05-02 18:24:45 +0300 |
commit | 82b96552f15a05ee9f31813178e024720aa5b9bc (patch) | |
tree | ae7ef06c29e83dee36d1cf1896a95bd659ad0a9d /Documentation/devicetree/bindings/nvme | |
parent | b170143ae1113882731666aec9b9105356f1fc17 (diff) | |
download | linux-82b96552f15a05ee9f31813178e024720aa5b9bc.tar.xz |
dt-bindings: nvme: Add Apple ANS NVMe
Apple SoCs such as the M1 come with an embedded NVMe coprocessor called
ANS2.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sven Peter <sven@svenpeter.dev>
Diffstat (limited to 'Documentation/devicetree/bindings/nvme')
-rw-r--r-- | Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml b/Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml new file mode 100644 index 000000000000..ddff9233b159 --- /dev/null +++ b/Documentation/devicetree/bindings/nvme/apple,nvme-ans.yaml @@ -0,0 +1,111 @@ +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/nvme/apple,nvme-ans.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Apple ANS NVM Express host controller + +maintainers: + - Sven Peter <sven@svenpeter.dev> + +properties: + compatible: + items: + - enum: + - apple,t8103-nvme-ans2 + - apple,t6000-nvme-ans2 + - const: apple,nvme-ans2 + + reg: + items: + - description: NVMe and NVMMU registers + - description: ANS2 co-processor control registers + + reg-names: + items: + - const: nvme + - const: ans + + resets: + maxItems: 1 + + power-domains: + # two domains for t8103, three for t6000 + minItems: 2 + items: + - description: power domain for the NVMe controller. + - description: power domain for the first PCIe bus connecting the NVMe + controller to the storage modules. + - description: optional power domain for the second PCIe bus + connecting the NVMe controller to the storage modules. + + power-domain-names: + minItems: 2 + items: + - const: ans + - const: apcie0 + - const: apcie1 + + mboxes: + maxItems: 1 + description: Mailbox of the ANS2 co-processor + + interrupts: + maxItems: 1 + + apple,sart: + maxItems: 1 + $ref: /schemas/types.yaml#/definitions/phandle + description: | + Reference to the SART address filter. + + The SART address filter is documented in iommu/apple,sart.yaml. + +if: + properties: + compatible: + contains: + const: apple,t8103-nvme-ans2 +then: + properties: + power-domains: + maxItems: 2 + power-domain-names: + maxItems: 2 +else: + properties: + power-domains: + minItems: 3 + power-domain-names: + minItems: 3 + +required: + - compatible + - reg + - reg-names + - resets + - power-domains + - power-domain-names + - mboxes + - interrupts + - apple,sart + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/apple-aic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + nvme@7bcc0000 { + compatible = "apple,t8103-nvme-ans2", "apple,nvme-ans2"; + reg = <0x7bcc0000 0x40000>, <0x77400000 0x4000>; + reg-names = "nvme", "ans"; + interrupts = <AIC_IRQ 590 IRQ_TYPE_LEVEL_HIGH>; + mboxes = <&ans>; + apple,sart = <&sart>; + power-domains = <&ps_ans2>, <&ps_apcie_st>; + power-domain-names = "ans", "apcie0"; + resets = <&ps_ans2>; + }; |