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 --- Change in v4: Update commit message about register setting. Rename USB_PCSTXSWINGFULL to SCFG_USB_PCSTXSWINGFULL.
Change in v3: - none
Change in v2: In function erratum_a008997(): 1.Put a blank line after variable declaration.
arch/arm/cpu/armv7/ls102xa/Kconfig | 6 ++++++ arch/arm/cpu/armv7/ls102xa/soc.c | 14 ++++++++++++++ arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 3 +++ 3 files changed, 23 insertions(+)
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index f09766cf03..ee09dd6fed 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -7,6 +7,7 @@ config ARCH_LS1021A select SYS_FSL_ERRATUM_A010315 select SYS_FSL_ERRATUM_A009008 select SYS_FSL_ERRATUM_A009798 + select SYS_FSL_ERRATUM_A008997 select SYS_FSL_SRDS_1 select SYS_HAS_SERDES select SYS_FSL_DDR_BE if SYS_FSL_DDR @@ -64,6 +65,11 @@ config SYS_FSL_ERRATUM_A009798 help Workaround for USB PHY erratum A009798
+config SYS_FSL_ERRATUM_A008997 + bool + help + Workaround for USB PHY erratum A008997 + config SYS_FSL_SRDS_1 bool
diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c index 487b5cf0ec..ee9eb59f59 100644 --- a/arch/arm/cpu/armv7/ls102xa/soc.c +++ b/arch/arm/cpu/armv7/ls102xa/soc.c @@ -83,6 +83,19 @@ 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; + u32 val = in_be32(scfg + SCFG_USB3PRM2CR / 4); + + val &= ~SCFG_USB_PCSTXSWINGFULL_MASK; + val |= SCFG_USB_PCSTXSWINGFULL_VAL; + out_be32(scfg + SCFG_USB3PRM2CR / 4, val); +#endif /* CONFIG_SYS_FSL_ERRATUM_A008997 */ +} + + void s_init(void) { } @@ -172,6 +185,7 @@ 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 5762d3308a..e5c06170da 100644 --- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h +++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h @@ -177,6 +177,9 @@ 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 {