diff options
| author | Ran Wang <ran.wang_1@nxp.com> | 2017-09-04 18:46:53 +0800 |
|---|---|---|
| committer | York Sun <york.sun@nxp.com> | 2017-09-11 08:01:06 -0700 |
| commit | c1853f6f7348d86faead6ffe30c25db9d7cef144 (patch) | |
| tree | 665be5b5b5449929dbc26447008cc711d60ff714 /arch | |
| parent | 83fa71189af3354cd09a56d61f3ed31ce082f51f (diff) | |
armv7: Add workaround for USB erratum A-009798
The default setting for USB High Speed Squelch Threshold results
in a threshold close to or lower than 100mV. This leads to Receive
Compliance test failure for a 100mV threshold.
Shift the threshold from ~100mV towards ~130mV by setting SQRXTUNE
to 0x0 to pass USB High Speed Receiver Sensitivity Compliance test.
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')
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/ls102xa/soc.c | 10 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 1 |
3 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index be30dd8442..a9fc65ff11 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -4,6 +4,7 @@ config ARCH_LS1021A select SYS_FSL_ERRATUM_A008407 select SYS_FSL_ERRATUM_A009008 select SYS_FSL_ERRATUM_A009663 + select SYS_FSL_ERRATUM_A009798 select SYS_FSL_ERRATUM_A009942 select SYS_FSL_ERRATUM_A010315 select SYS_FSL_HAS_CCI400 @@ -64,6 +65,11 @@ config SYS_FSL_ERRATUM_A009008 help Workaround for USB PHY erratum A009008 +config SYS_FSL_ERRATUM_A009798 + bool + help + Workaround for USB PHY erratum A009798 + config SYS_FSL_ERRATUM_A010315 bool "Workaround for PCIe erratum A010315" diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c index eed06a3c7c..4f94df79f8 100644 --- a/arch/arm/cpu/armv7/ls102xa/soc.c +++ b/arch/arm/cpu/armv7/ls102xa/soc.c @@ -71,6 +71,15 @@ static void erratum_a009008(void) #endif /* CONFIG_SYS_FSL_ERRATUM_A009008 */ } +static void erratum_a009798(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A009798 + u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE; + + clrbits_be32(scfg + SCFG_USB3PRM1CR / 4, + SCFG_USB_SQRXTUNE_MASK << 23); +#endif /* CONFIG_SYS_FSL_ERRATUM_A009798 */ +} void s_init(void) { @@ -161,6 +170,7 @@ int arch_soc_init(void) /* Erratum */ erratum_a009008(); + erratum_a009798(); 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 28c1a98418..bc5125d833 100644 --- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h +++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h @@ -177,6 +177,7 @@ struct ccsr_gur { #define SCFG_BASE 0x01570000 #define SCFG_USB3PRM1CR 0x070 #define SCFG_USB_TXVREFTUNE 0x9 +#define SCFG_USB_SQRXTUNE_MASK 0x7 /* Supplemental Configuration Unit */ struct ccsr_scfg { |