diff options
| author | Ran Wang <ran.wang_1@nxp.com> | 2017-09-04 18:46:55 +0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2017-09-11 08:01:07 -0700 |
| commit | 0e8a4264ec705b4d4e381dcb7e1e050dc1b5123d (patch) | |
| tree | 9274ee0aca22d3db9aa40e0f25d52247daf04044 /arch/arm | |
| parent | e10d114279f01899c7eb47f5977dbceca6b6efaf (diff) | |
armv7: Add workaround for USB erratum A-009007
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/soc.c | 12 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 7 |
3 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index a84cda8592..20e2b1a50a 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -3,6 +3,7 @@ config ARCH_LS1021A select SYS_FSL_ERRATUM_A008378 select SYS_FSL_ERRATUM_A008407 select SYS_FSL_ERRATUM_A008997 + select SYS_FSL_ERRATUM_A009007 select SYS_FSL_ERRATUM_A009008 select SYS_FSL_ERRATUM_A009663 select SYS_FSL_ERRATUM_A009798 @@ -66,6 +67,11 @@ config SYS_FSL_ERRATUM_A008997 help Workaround for USB PHY erratum A008997 +config SYS_FSL_ERRATUM_A009007 + bool + help + Workaround for USB PHY erratum A009007 + config SYS_FSL_ERRATUM_A009008 bool help diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c index 07b525d7a3..e10037d711 100644 --- a/arch/arm/cpu/armv7/ls102xa/soc.c +++ b/arch/arm/cpu/armv7/ls102xa/soc.c @@ -92,6 +92,17 @@ static void erratum_a008997(void) #endif /* CONFIG_SYS_FSL_ERRATUM_A008997 */ } +static void erratum_a009007(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A009007 + void __iomem *usb_phy = (void __iomem *)USB_PHY_BASE; + + out_le16(usb_phy + USB_PHY_RX_OVRD_IN_HI, USB_PHY_RX_EQ_VAL_1); + out_le16(usb_phy + USB_PHY_RX_OVRD_IN_HI, USB_PHY_RX_EQ_VAL_2); + out_le16(usb_phy + USB_PHY_RX_OVRD_IN_HI, USB_PHY_RX_EQ_VAL_3); + out_le16(usb_phy + USB_PHY_RX_OVRD_IN_HI, USB_PHY_RX_EQ_VAL_4); +#endif /* CONFIG_SYS_FSL_ERRATUM_A009007 */ +} void s_init(void) { @@ -184,6 +195,7 @@ int arch_soc_init(void) erratum_a009008(); erratum_a009798(); erratum_a008997(); + erratum_a009007(); return 0; } diff --git a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h index 25e65cbd26..fe0bbb9d93 100644 --- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h +++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h @@ -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; |