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
Signed-off-by: Rajesh Bhagat
Signed-off-by: Suresh Gupta
Signed-off-by: Ran Wang
---
Change in v5:
- none
Change in v4:
Update commit message about register setting.
Change in v3:
- none
Change in v2:
In function erratum_a009007():
1.Put a blank line after variable declaration.
arch/arm/cpu/armv7/ls102xa/Kconfig| 6 ++
arch/arm/cpu/armv7/ls102xa/soc.c | 12
arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 7 +++
3 files changed, 25 insertions(+)
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig
b/arch/arm/cpu/armv7/ls102xa/Kconfig
index ee09dd6fed..a77bb06cf9 100644
--- a/arch/arm/cpu/armv7/ls102xa/Kconfig
+++ b/arch/arm/cpu/armv7/ls102xa/Kconfig
@@ -8,6 +8,7 @@ config ARCH_LS1021A
select SYS_FSL_ERRATUM_A009008
select SYS_FSL_ERRATUM_A009798
select SYS_FSL_ERRATUM_A008997
+ select SYS_FSL_ERRATUM_A009007
select SYS_FSL_SRDS_1
select SYS_HAS_SERDES
select SYS_FSL_DDR_BE if SYS_FSL_DDR
@@ -70,6 +71,11 @@ 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_SRDS_1
bool
diff --git a/arch/arm/cpu/armv7/ls102xa/soc.c b/arch/arm/cpu/armv7/ls102xa/soc.c
index f409ad7f44..57c6f3e53c 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)
{
@@ -183,6 +194,7 @@ 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 e5c06170da..157643eb91 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -181,6 +181,13 @@ struct ccsr_gur {
#define SCFG_USB_PCSTXSWINGFULL_MASK 0xFE00
#define SCFG_USB_PCSTXSWINGFULL_VAL0x8E00
+#define USB_PHY_BASE 0x0851
+#define USB_PHY_RX_OVRD_IN_HI 0x200c
+#define USB_PHY_RX_EQ_VAL_10x
+#define USB_PHY_RX_EQ_VAL_20x8000
+#define USB_PHY_RX_EQ_VAL_30x8004
+#define USB_PHY_RX_EQ_VAL_40x800C
+
/* Supplemental Configuration Unit */
struct ccsr_scfg {
u32 dpslpcr;
--
2.14.1
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