From: David Daney <ddaney@caviumnetworks.com>
Date: Wed, 27 Apr 2011 17:54:22 +0000 (-0700)
Subject: usb: Configure octeon2 glue logic for proper uSOF cycle period.
X-Git-Tag: upstream/snapshot3+hdmi~10346^2~80
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=14be249c969817e05c4f1ce042906e1c5be68873;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git

usb: Configure octeon2 glue logic for proper uSOF cycle period.

The reset value of the uSOF cycle period is incorrect.  Set it to
60,000 bits.  Without this, several commercial USB flash memory
devices and hubs fail to work properly.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/host/octeon2-common.c b/drivers/usb/host/octeon2-common.c
index aef6364..d9df423 100644
--- a/drivers/usb/host/octeon2-common.c
+++ b/drivers/usb/host/octeon2-common.c
@@ -183,6 +183,9 @@ end_clock:
 		cvmx_write_csr(CVMX_UCTLX_UPHY_PORTX_CTL_STATUS(i, 0),
 			       port_ctl_status.u64);
 	}
+
+	/* Set uSOF cycle period to 60,000 bits. */
+	cvmx_write_csr(CVMX_UCTLX_EHCI_FLA(0), 0x20ull);
 exit:
 	mutex_unlock(&octeon2_usb_clocks_mutex);
 }