armv8: fsl_lsch2: Add SerDes 2 support

New SoC LS1046A belongs to Freescale Chassis Generation 2 and
has two SerDes so we need to add this support in fsl_lsch2.
The SoC related SerDes 2 support will be added in SoC patch.

Signed-off-by: Gong Qianyu <Qianyu.Gong@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>

arch/arm/cpu/armv8/fsl-layerscape/fsl_lsch2_serdes.c

@@ -13,6 +13,9 @@
 #ifdef CONFIG_SYS_FSL_SRDS_1
 static u8 serdes1_prtcl_map[SERDES_PRCTL_COUNT];
 #endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+static u8 serdes2_prtcl_map[SERDES_PRCTL_COUNT];
+#endif
 
 int is_serdes_configured(enum srds_prtcl device)
 {
@@ -21,6 +24,9 @@ int is_serdes_configured(enum srds_prtcl device)
 #ifdef CONFIG_SYS_FSL_SRDS_1
 	ret |= serdes1_prtcl_map[device];
 #endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+	ret |= serdes2_prtcl_map[device];
+#endif
 
 	return !!ret;
 }
@@ -38,6 +44,12 @@ int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
 		cfg >>= FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT;
 		break;
 #endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+	case FSL_SRDS_2:
+		cfg &= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK;
+		cfg >>= FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT;
+		break;
+#endif
 	default:
 		printf("invalid SerDes%d\n", sd);
 		break;
@@ -114,4 +126,11 @@ void fsl_serdes_init(void)
 		    FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT,
 		    serdes1_prtcl_map);
 #endif
+#ifdef CONFIG_SYS_FSL_SRDS_2
+	serdes_init(FSL_SRDS_2,
+		    CONFIG_SYS_FSL_SERDES_ADDR,
+		    FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK,
+		    FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT,
+		    serdes2_prtcl_map);
+#endif
 }

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

@@ -140,6 +140,7 @@ enum srds_prtcl {
 
 enum srds {
 	FSL_SRDS_1  = 0,
+	FSL_SRDS_2  = 1,
 };
 
 #endif

arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h

@@ -228,6 +228,8 @@ struct ccsr_gur {
 #define FSL_CHASSIS2_RCWSR0_MEM_PLL_RAT_MASK	0x3f
 #define FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_MASK	0xffff0000
 #define FSL_CHASSIS2_RCWSR4_SRDS1_PRTCL_SHIFT	16
+#define FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_MASK	0x0000ffff
+#define FSL_CHASSIS2_RCWSR4_SRDS2_PRTCL_SHIFT	0
 #define RCW_SB_EN_REG_INDEX	7
 #define RCW_SB_EN_MASK		0x00200000