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.

The changes shift the threshold from ~100mV towards ~130mV resulting
in passing of USB High Speed Receiver Sensitivity Compliance test

Signed-off-by: Sriram Dash <sriram.d...@nxp.com>
Signed-off-by: Rajesh Bhagat <rajesh.bha...@nxp.com>
---
 arch/arm/cpu/armv7/ls102xa/Kconfig                |  4 ++++
 arch/arm/cpu/armv7/ls102xa/soc.c                  | 10 ++++++++++
 arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h |  1 +
 3 files changed, 15 insertions(+)

diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig 
b/arch/arm/cpu/armv7/ls102xa/Kconfig
index 9f0188a..f816ed1 100644
--- a/arch/arm/cpu/armv7/ls102xa/Kconfig
+++ b/arch/arm/cpu/armv7/ls102xa/Kconfig
@@ -6,6 +6,7 @@ config ARCH_LS1021A
        select SYS_FSL_DDR_BE
        select SYS_FSL_DDR_VER_50
        select SYS_FSL_ERRATUM_A009008
+       select SYS_FSL_ERRATUM_A009798
 
 menu "LS102xA architecture"
        depends on ARCH_LS1021A
@@ -35,6 +36,9 @@ config SYS_FSL_ERRATUM_A010315
 config SYS_FSL_ERRATUM_A009008
        bool "Workaround for USB PHY erratum A009008"
 
+config SYS_FSL_ERRATUM_A009798
+       bool "Workaround for USB PHY erratum A009798"
+
 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 c54daee..2e64708 100644
--- a/arch/arm/cpu/armv7/ls102xa/soc.c
+++ b/arch/arm/cpu/armv7/ls102xa/soc.c
@@ -70,6 +70,15 @@ 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;
+       u32 val = in_be32(scfg + SCFG_USB3PRM1CR / 4);
+       out_be32(scfg + SCFG_USB3PRM1CR / 4, val & USB_SQRXTUNE);
+#endif /* CONFIG_SYS_FSL_ERRATUM_A009798 */
+}
+
 void s_init(void)
 {
 }
@@ -158,6 +167,7 @@ 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 6ea8c4b..8cafa07 100644
--- a/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
+++ b/arch/arm/include/asm/arch-ls102xa/immap_ls102xa.h
@@ -176,6 +176,7 @@ struct ccsr_gur {
 #define SCFG_BASE                      0x01570000
 #define SCFG_USB3PRM1CR                        0x070
 #define USB_TXVREFTUNE                 0x9
+#define USB_SQRXTUNE                   0xFC7FFFFF
 
 /* Supplemental Configuration Unit */
 struct ccsr_scfg {
-- 
1.9.3

_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot

Reply via email to