ehci: hsic: Add device tree entry for ITC
ITC (interrupt threshold control) is the maximum rate at which
usb controller generates interrupts. ITC interval is measured
in micro frames (which is 125us). Device tree entry will help
configure ITC per controller and per platform.
Change-Id: Ibdb8f806c8334042025cad33744160594cfcca80
Signed-off-by: Vamsi Krishna <vskrishn@codeaurora.org>
diff --git a/drivers/usb/host/ehci-msm-hsic.c b/drivers/usb/host/ehci-msm-hsic.c
index f16a0b6..14c3323 100644
--- a/drivers/usb/host/ehci-msm-hsic.c
+++ b/drivers/usb/host/ehci-msm-hsic.c
@@ -1878,6 +1878,10 @@
&pdata->strobe_pad_offset);
of_property_read_u32(node, "hsic,data-pad-offset",
&pdata->data_pad_offset);
+ of_property_read_u32(node, "hsic,log2-itc",
+ &pdata->log2_irq_thresh);
+ if (pdata->log2_irq_thresh > 6)
+ pdata->log2_irq_thresh = 0;
pdata->bus_scale_table = msm_bus_cl_get_pdata(pdev);