armv8: ls1028a: enable workaround for USB erratum A-008997

Enable workaround for USB erratum A-008997. Here PCSTXSWINGFULL
registers has been moved to DSCR as compared to other Layerscape SoCs
where it was in SCFG.
Signed-off-by: NRan Wang <ran.wang_1@nxp.com>
Reviewed-by: NPrabhakar Kushwaha <prabhakar.kushwaha@nxp.com>

arch/arm/cpu/armv8/fsl-layerscape/Kconfig

@@ -48,6 +48,7 @@ config ARCH_LS1028A
 	select SYS_I2C_MXC_I2C6
 	select SYS_I2C_MXC_I2C7
 	select SYS_I2C_MXC_I2C8
+	select SYS_FSL_ERRATUM_A008997
 	select SYS_FSL_ERRATUM_A009007
 	select SYS_FSL_ERRATUM_A008514 if !TFABOOT
 	select SYS_FSL_ERRATUM_A009663 if !TFABOOT

arch/arm/cpu/armv8/fsl-layerscape/soc.c

@@ -126,6 +126,10 @@ static void erratum_a008997(void)
 	set_usb_pcstxswingfull(scfg, SCFG_USB3PRM2CR_USB2);
 	set_usb_pcstxswingfull(scfg, SCFG_USB3PRM2CR_USB3);
 #endif
+#elif defined(CONFIG_ARCH_LS1028A)
+	clrsetbits_le32(DCSR_BASE +  DCSR_USB_IOCR1,
+			0x7F << 11,
+			DCSR_USB_PCSTXSWINGFULL << 11);
 #endif
 #endif /* CONFIG_SYS_FSL_ERRATUM_A008997 */
 }

arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h

@@ -226,6 +226,8 @@
 #define USB_PHY_RX_EQ_VAL_2		0x0080
 #define USB_PHY_RX_EQ_VAL_3		0x0380
 #define USB_PHY_RX_EQ_VAL_4		0x0b80
+#define DCSR_USB_IOCR1			0x108004
+#define DCSR_USB_PCSTXSWINGFULL	0x71
 
 #define TP_ITYP_AV		0x00000001	/* Initiator available */
 #define TP_ITYP_TYPE(x)	(((x) & 0x6) >> 1)	/* Initiator Type */