From: Suresh Gupta <suresh.gu...@freescale.com>
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.d...@nxp.com>
Signed-off-by: Suresh Gupta <suresh.gu...@nxp.com>
---
Changes in v2: None
arch/arm/cpu/armv7/ls102xa/Kconfig | 4 ++++
arch/arm/cpu/armv7/ls102xa/soc.c | 13 +++++++++++++
arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h | 4 ++++
3 files changed, 21 insertions(+)
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig
b/arch/arm/cpu/armv7/ls102xa/Kconfig
index 9ffb90e..40c6782 100644
--- a/arch/arm/cpu/armv7/ls102xa/Kconfig
+++ b/arch/arm/cpu/armv7/ls102xa/Kconfig
@@ -5,6 +5,7 @@ config ARCH_LS1021A
select SYS_FSL_ERRATUM_A009663
select SYS_FSL_ERRATUM_A009942
select SYS_FSL_ERRATUM_A010315
+ select SYS_FSL_ERRATUM_A009008
select SYS_FSL_SRDS_1
select SYS_HAS_SERDES
select SYS_FSL_DDR_BE if SYS_FSL_DDR
@@ -42,6 +43,9 @@ config SECURE_BOOT
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..ee27b0c 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 +156,9 @@ 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;
--
1.9.3
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