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armv8: Add workaround for USB erratum A-008997

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Low Frequency Periodic Signaling(LFPS) Peak-to-Peak Differential
Output Voltage Test Compliance fails using default transmitter
settings

Change config of transmitter signal swings by setting register
PCSTXSWINGFULL to 0x47 to pass compliance tests.

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 18:46:50 +08:00
committed by York Sun
parent 2a8a353958
commit 9d1cd910f7
3 changed files with 34 additions and 0 deletions
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4
arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h
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@@ -339,10 +339,14 @@ struct ccsr_gur {
#define SCFG_BASE 0x01570000
#define SCFG_USB3PRM1CR_USB1 0x070
#define SCFG_USB3PRM2CR_USB1 0x074
#define SCFG_USB3PRM1CR_USB2 0x07C
#define SCFG_USB3PRM2CR_USB2 0x080
#define SCFG_USB3PRM1CR_USB3 0x088
#define SCFG_USB3PRM2CR_USB3 0x08c
#define SCFG_USB_TXVREFTUNE 0x9
#define SCFG_USB_SQRXTUNE_MASK 0x7
#define SCFG_USB_PCSTXSWINGFULL 0x47
#define SCFG_SNPCNFGCR_SECRDSNP 0x80000000
#define SCFG_SNPCNFGCR_SECWRSNP 0x40000000