forked from Minki/linux
a55448d1c0
Add documentation for SATA PHY available in Broadcom's NSP SoC. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
47 lines
1.1 KiB
Plaintext
47 lines
1.1 KiB
Plaintext
* Broadcom SATA3 PHY
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Required properties:
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- compatible: should be one or more of
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"brcm,bcm7425-sata-phy"
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"brcm,bcm7445-sata-phy"
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"brcm,iproc-ns2-sata-phy"
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"brcm,iproc-nsp-sata-phy"
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"brcm,phy-sata3"
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- address-cells: should be 1
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- size-cells: should be 0
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- reg: register ranges for the PHY PCB interface
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- reg-names: should be "phy" and "phy-ctrl"
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The "phy-ctrl" registers are only required for
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"brcm,iproc-ns2-sata-phy".
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Sub-nodes:
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Each port's PHY should be represented as a sub-node.
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Sub-nodes required properties:
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- reg: the PHY number
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- phy-cells: generic PHY binding; must be 0
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Sub-nodes optional properties:
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- brcm,enable-ssc: use spread spectrum clocking (SSC) on this port
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This property is not applicable for "brcm,iproc-ns2-sata-phy" and
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"brcm,iproc-nsp-sata-phy".
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Example:
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sata-phy@f0458100 {
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compatible = "brcm,bcm7445-sata-phy", "brcm,phy-sata3";
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reg = <0xf0458100 0x1e00>, <0xf045804c 0x10>;
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reg-names = "phy";
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#address-cells = <1>;
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#size-cells = <0>;
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sata-phy@0 {
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reg = <0>;
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#phy-cells = <0>;
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};
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sata-phy@1 {
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reg = <1>;
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#phy-cells = <0>;
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};
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};
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