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armv7: Add workaround for USB erratum A-009007

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Rx Compliance tests may fail intermittently at high
jitter frequencies using default register values

Program register USB_PHY_RX_OVRD_IN_HI in certain sequence
to make the Rx compliance test pass.

Signed-off-by: Sriram Dash <sriram.dash@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
Signed-off-by: Suresh Gupta <suresh.bhagat@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 18:46:55 +08:00
committed by York Sun
parent e10d114279
commit 0e8a4264ec
3 changed files with 25 additions and 0 deletions
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7
arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
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@@ -182,6 +182,13 @@ struct ccsr_gur {
#define SCFG_USB_PCSTXSWINGFULL_MASK 0x0000FE00
#define SCFG_USB_PCSTXSWINGFULL_VAL 0x00008E00
#define USB_PHY_BASE 0x08510000
#define USB_PHY_RX_OVRD_IN_HI 0x200c
#define USB_PHY_RX_EQ_VAL_1 0x0000
#define USB_PHY_RX_EQ_VAL_2 0x8000
#define USB_PHY_RX_EQ_VAL_3 0x8004
#define USB_PHY_RX_EQ_VAL_4 0x800C
/* Supplemental Configuration Unit */
struct ccsr_scfg {
u32 dpslpcr;