USB High Speed (HS) EYE Height Adjustment USB HS speed eye diagram fails with the default value at many corners, particularly at a high temperature
Optimal eye at TXVREFTUNE value to 1001 is observed, change set the same value.
Signed-off-by: Sriram Dash sriram.dash@nxp.com --- arch/arm/cpu/armv7/ls102xa/Kconfig | 4 ++++ arch/arm/cpu/armv7/ls102xa/soc.c | 12 ++++++++++++ arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 4 ++++ 3 files changed, 20 insertions(+)
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index 28bf778..9f0188a 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -5,6 +5,7 @@ config ARCH_LS1021A select SYS_HAS_SERDES select SYS_FSL_DDR_BE select SYS_FSL_DDR_VER_50 + select SYS_FSL_ERRATUM_A009008
menu "LS102xA architecture" depends on ARCH_LS1021A @@ -31,6 +32,9 @@ config NUM_DDR_CONTROLLERS config SYS_FSL_ERRATUM_A010315 bool "Workaround for PCIe erratum A010315"
+config SYS_FSL_ERRATUM_A009008 + bool "Workaround for USB PHY erratum A009008" + 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 52fb6f8..c54daee 100644 --- a/arch/arm/cpu/armv7/ls102xa/soc.c +++ b/arch/arm/cpu/armv7/ls102xa/soc.c @@ -60,6 +60,16 @@ unsigned int get_soc_major_rev(void) return major; }
+static void erratum_a009008(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A009008 + u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE; + u32 val = in_be32(scfg + SCFG_USB3PRM1CR / 4); + val &= ~(0xF << 6); + out_be32(scfg + SCFG_USB3PRM1CR / 4, val|(USB_TXVREFTUNE << 6)); +#endif /* CONFIG_SYS_FSL_ERRATUM_A009008 */ +} + void s_init(void) { } @@ -146,6 +156,8 @@ int arch_soc_init(void) */ out_be32(&scfg->eddrtqcfg, 0x63b20042);
+ /* Erratum */ + erratum_a009008(); 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 c34fd63..6ea8c4b 100644 --- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h +++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h @@ -173,6 +173,10 @@ struct ccsr_gur { #define SCFG_PMCINTECR_ETSECERRG1 0x00040000 #define SCFG_CLUSTERPMCR_WFIL2EN 0x80000000
+#define SCFG_BASE 0x01570000 +#define SCFG_USB3PRM1CR 0x070 +#define USB_TXVREFTUNE 0x9 + /* Supplemental Configuration Unit */ struct ccsr_scfg { u32 dpslpcr;