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armv8: Add workaround for USB erratum A-009798

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The default setting for USB High Speed Squelch Threshold results
in a threshold close to or lower than 100mV. This leads to Receiver
Compliance test failure for a 100mV threshold.

Shift the threshold from ~100mV towards ~130mV by setting SQRXTUNE
to 0x0 to pass USB High Speed Receiver Sensitivity Compliance test.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
[YS: Reordered Kconfig options]
Reviewed-by: York Sun <york.sun@nxp.com>
This commit is contained in:
Ran Wang
2017-09-04 18:46:49 +08:00
committed by York Sun
parent 2ab1553f08
commit 2a8a353958
4 changed files with 32 additions and 0 deletions
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arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h
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@@ -134,6 +134,7 @@
#define SCFG_USB3PRM1CR 0x000
#define SCFG_USB3PRM1CR_INIT 0x27672b2a
#define SCFG_USB_TXVREFTUNE 0x9
#define SCFG_USB_SQRXTUNE_MASK 0x7
#define SCFG_QSPICLKCTLR 0x10
#define TP_ITYP_AV 0x00000001 /* Initiator available */