arm/dt: msm8974: Enable PNOC BUS workaround only for V1
PNOC (Peripheral NOC) present on some MSM targets has
a hardware BUG which degrades the USB peripheral performance.
Fix for this is enabling software workaround that changes the
USB mem-type attribute value (from 0 to 2) via VMIDMT.
This hardware issue is present only on V1, hence, disable the
workaround on all other msm8974 versions.
Change-Id: I81d6758bf8c54b1fd3b1b799960aa43e7f42d9ab
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974-v1.dtsi b/arch/arm/boot/dts/msm8974-v1.dtsi
index ae8cf83..62837a1 100644
--- a/arch/arm/boot/dts/msm8974-v1.dtsi
+++ b/arch/arm/boot/dts/msm8974-v1.dtsi
@@ -128,3 +128,7 @@
&ldrex_spinlock {
status = "ok";
};
+
+&usb_otg {
+ qcom,hsusb-otg-pnoc-errata-fix;
+};
diff --git a/arch/arm/boot/dts/msm8974.dtsi b/arch/arm/boot/dts/msm8974.dtsi
index 7e6c6d6..54ee9d4 100644
--- a/arch/arm/boot/dts/msm8974.dtsi
+++ b/arch/arm/boot/dts/msm8974.dtsi
@@ -154,7 +154,6 @@
qcom,hsusb-otg-mode = <1>;
qcom,hsusb-otg-otg-control = <1>;
qcom,hsusb-otg-disable-reset;
- qcom,hsusb-otg-pnoc-errata-fix;
qcom,msm-bus,name = "usb2";
qcom,msm-bus,num-cases = <2>;