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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-07 21:29:18 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-07 21:29:18 -0400
commit9a50aaefc1b896e734bf7faf3d085f71a360ce97 (patch)
tree82fd9003d6c1d1a7dcf107f46d77b92f11d3f697 /Documentation/devicetree/bindings
parent1e345ac6869cd2f2d5d4b780fc5d5332dd1e8905 (diff)
parent19ac97ff701ae3c0eda09dd88f590806f1c4eb2d (diff)
Merge tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley: "This patch set consists of the usual driver updates (megaraid_sas, arcmsr, be2iscsi, lpfc, mpt2sas, mpt3sas, qla2xxx, ufs) plus several assorted fixes and miscellaneous updates (including the pci_msix_enable_range() changes that have been pending for a while)" * tag 'scsi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (202 commits) scsi: add a CONFIG_SCSI_MQ_DEFAULT option ufs: definitions for phy interface ufs: tune bkops while power managment events ufs: Add support for clock scaling using devfreq framework ufs: Add freq-table-hz property for UFS device ufs: Add support for clock gating ufs: refactor configuring power mode ufs: add UFS power management support ufs: introduce well known logical unit in ufs ufs: manually add well known logical units ufs: Active Power Mode - configuring bActiveICCLevel ufs: improve init sequence ufs: refactor query descriptor API support ufs: add voting support for host controller power ufs: Add clock initialization support ufs: Add regulator enable support ufs: Allow vendor specific initialization scsi: don't add scsi_device if its already visible scsi: fix the type for well known LUs scsi: fix comment in struct Scsi_Host definition ...
Diffstat (limited to 'Documentation/devicetree/bindings')
-rw-r--r--Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt41
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
index 20468b2a751..53579197eca 100644
--- a/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
+++ b/Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt
@@ -8,9 +8,50 @@ Required properties:
- interrupts : <interrupt mapping for UFS host controller IRQ>
- reg : <registers mapping>
+Optional properties:
+- vdd-hba-supply : phandle to UFS host controller supply regulator node
+- vcc-supply : phandle to VCC supply regulator node
+- 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
+ or 2.7-3.6V. This boolean property when set, specifies
+ to use low voltage range of 1.7-1.95V. Note for external
+ UFS cards this property is invalid and valid VCC range is
+ always 2.7-3.6V.
+- vcc-max-microamp : specifies max. load that can be drawn from vcc supply
+- vccq-max-microamp : specifies max. load that can be drawn from vccq supply
+- vccq2-max-microamp : specifies max. load that can be drawn from vccq2 supply
+- <name>-fixed-regulator : boolean property specifying that <name>-supply is a fixed regulator
+
+- clocks : List of phandle and clock specifier pairs
+- clock-names : List of clock input name strings sorted in the same
+ order as the clocks property.
+- freq-table-hz : Array of <min max> operating frequencies stored in the same
+ order as the clocks property. If this property is not
+ defined or a value in the array is "0" then it is assumed
+ that the frequency is set by the parent clock or a
+ fixed rate clock source.
+
+Note: If above properties are not defined it can be assumed that the supply
+regulators or clocks are always on.
+
Example:
ufshc@0xfc598000 {
compatible = "jedec,ufs-1.1";
reg = <0xfc598000 0x800>;
interrupts = <0 28 0>;
+
+ vdd-hba-supply = <&xxx_reg0>;
+ vdd-hba-fixed-regulator;
+ vcc-supply = <&xxx_reg1>;
+ vcc-supply-1p8;
+ vccq-supply = <&xxx_reg2>;
+ vccq2-supply = <&xxx_reg3>;
+ vcc-max-microamp = 500000;
+ vccq-max-microamp = 200000;
+ vccq2-max-microamp = 200000;
+
+ clocks = <&core 0>, <&ref 0>, <&iface 0>;
+ clock-names = "core_clk", "ref_clk", "iface_clk";
+ freq-table-hz = <100000000 200000000>, <0 0>, <0 0>;
};