diff options
| author | Ran Wang <ran.wang_1@nxp.com> | 2017-09-04 18:46:54 +0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2017-09-11 08:01:06 -0700 |
| commit | e10d114279f01899c7eb47f5977dbceca6b6efaf (patch) | |
| tree | 79f3a9efd87673c07d726424b5a1f9cc89c9f957 /arch/arm | |
| parent | c1853f6f7348d86faead6ffe30c25db9d7cef144 (diff) | |
armv7: Add workaround for USB erratum A-008997
Low Frequency Periodic Singaling (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>
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 | 13 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 3 |
3 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index a9fc65ff11..a84cda8592 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -2,6 +2,7 @@ config ARCH_LS1021A bool select SYS_FSL_ERRATUM_A008378 select SYS_FSL_ERRATUM_A008407 + select SYS_FSL_ERRATUM_A008997 select SYS_FSL_ERRATUM_A009008 select SYS_FSL_ERRATUM_A009663 select SYS_FSL_ERRATUM_A009798 @@ -60,6 +61,11 @@ config SYS_CCI400_OFFSET Offset for CCI400 base. CCI400 base addr = CCSRBAR + CCI400_OFFSET +config SYS_FSL_ERRATUM_A008997 + bool + help + Workaround for USB PHY erratum A008997 + 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 4f94df79f8..07b525d7a3 100644 --- a/arch/arm/cpu/armv7/ls102xa/soc.c +++ b/arch/arm/cpu/armv7/ls102xa/soc.c @@ -81,6 +81,18 @@ static void erratum_a009798(void) #endif /* CONFIG_SYS_FSL_ERRATUM_A009798 */ } +static void erratum_a008997(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A008997 + u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE; + + clrsetbits_be32(scfg + SCFG_USB3PRM2CR / 4, + SCFG_USB_PCSTXSWINGFULL_MASK, + SCFG_USB_PCSTXSWINGFULL_VAL); +#endif /* CONFIG_SYS_FSL_ERRATUM_A008997 */ +} + + void s_init(void) { } @@ -171,6 +183,7 @@ int arch_soc_init(void) /* Erratum */ erratum_a009008(); erratum_a009798(); + erratum_a008997(); 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 bc5125d833..25e65cbd26 100644 --- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h +++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h @@ -178,6 +178,9 @@ struct ccsr_gur { #define SCFG_USB3PRM1CR 0x070 #define SCFG_USB_TXVREFTUNE 0x9 #define SCFG_USB_SQRXTUNE_MASK 0x7 +#define SCFG_USB3PRM2CR 0x074 +#define SCFG_USB_PCSTXSWINGFULL_MASK 0x0000FE00 +#define SCFG_USB_PCSTXSWINGFULL_VAL 0x00008E00 /* Supplemental Configuration Unit */ struct ccsr_scfg { |