usb: phy-msm-qusb-v2: Add chip version check for errata
There was a hardware fix for Chirp Voltage Dp and Dm violation
leading to SSD enumeration failure. The fix is on 1.1 version
of the SoC.
This is a method to distinguish between the two different versions
of the SoC by reading the minor revision number as:
00 : rev 1.0
01 : rev 1.1
Using this method this errata can be worked around for the specific
chip version.
Change-Id: I34435d6b630e6f6e844493ebf4034fa6e3556df8
Signed-off-by: Pratham Pratap <prathampratap@codeaurora.org>
diff --git a/Documentation/devicetree/bindings/usb/msm-phy.txt b/Documentation/devicetree/bindings/usb/msm-phy.txt
index f8c8a69..f7f4ced 100644
--- a/Documentation/devicetree/bindings/usb/msm-phy.txt
+++ b/Documentation/devicetree/bindings/usb/msm-phy.txt
@@ -184,6 +184,10 @@
state when attached in host mode and "suspend" state when detached.
- qcom,tune2-efuse-correction: The value to be adjusted from fused value for
improved rise/fall times.
+ - nvmem-cells: specifies the handle to represent the SoC revision.
+ usually it is defined by qfprom device node.
+ - nvmem-cell-names: specifies the given nvmem cell name as defined in
+ qfprom node.
Example:
qusb_phy: qusb@f9b39000 {