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dt-bindings: Add documentation for UFS's vcc-voltage-level

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Add documentation for the UFS's vcc-voltage-level.

Change-Id: I8bb21513f1244f841b871d8eb25ec95259f66932
This commit is contained in:
Bao D. Nguyen 2020-06-30 16:01:37 -07:00
commit 7d510d2961
1 changed files with 2 additions and 0 deletions
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bindings/ufs/ufshcd-pltfrm.txt
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@ -22,6 +22,8 @@ Optional properties:
with "phys" attribute, provides phandle to UFS PHY node
- vdd-hba-supply : phandle to UFS host controller supply regulator node
- vcc-supply : phandle to VCC supply regulator node
- vcc-voltage-level : specifies voltage levels for VCC supply.
Should be specified in pairs (min, max), units uV.
- vccq-supply : phandle to VCCQ supply regulator node
- vccq2-supply : phandle to VCCQ2 supply regulator node
- vcc-supply-1p8 : For embedded UFS devices, valid VCC range is 1.7-1.95V