fsl/mpc85xx: define common serdes_clock_to_string function

This allows to share some common code for the boards that use a corenet
base SoC.

Two different versions of the function are available in
fsl_corenet_serdes.c and fsl_corenet2_serdes.c files.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
[York Sun: fix t1040qds.c]
Acked-by: York Sun <yorksun@freescale.com>

arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c

@@ -201,3 +201,24 @@ void fsl_serdes_init(void)
 #endif
 
 }
+
+const char *serdes_clock_to_string(u32 clock)
+{
+	switch (clock) {
+	case SRDS_PLLCR0_RFCK_SEL_100:
+		return "100";
+	case SRDS_PLLCR0_RFCK_SEL_125:
+		return "125";
+	case SRDS_PLLCR0_RFCK_SEL_156_25:
+		return "156.25";
+	case SRDS_PLLCR0_RFCK_SEL_161_13:
+		return "161.1328123";
+	default:
+#if defined(CONFIG_T4240QDS)
+		return "???";
+#else
+		return "122.88";
+#endif
+	}
+}
+

arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c

@@ -858,3 +858,20 @@ void fsl_serdes_init(void)
 	}
 #endif
 }
+
+const char *serdes_clock_to_string(u32 clock)
+{
+	switch (clock) {
+	case SRDS_PLLCR0_RFCK_SEL_100:
+		return "100";
+	case SRDS_PLLCR0_RFCK_SEL_125:
+		return "125";
+	case SRDS_PLLCR0_RFCK_SEL_156_25:
+		return "156.25";
+	case SRDS_PLLCR0_RFCK_SEL_161_13:
+		return "161.1328123";
+	default:
+		return "150";
+	}
+}
+

arch/powerpc/include/asm/fsl_serdes.h

@@ -86,6 +86,7 @@ enum srds {
 
 int is_serdes_configured(enum srds_prtcl device);
 void fsl_serdes_init(void);
+const char *serdes_clock_to_string(u32 clock);
 
 #ifdef CONFIG_FSL_CORENET
 #ifdef CONFIG_SYS_FSL_QORIQ_CHASSIS2

board/freescale/b4860qds/b4860qds.c

@@ -457,22 +457,6 @@ static int serdes_refclock(u8 sw, u8 sdclk)
 	return ret;
 }
 
-static const char *serdes_clock_to_string(u32 clock)
-{
-	switch (clock) {
-	case SRDS_PLLCR0_RFCK_SEL_100:
-		return "100";
-	case SRDS_PLLCR0_RFCK_SEL_125:
-		return "125";
-	case SRDS_PLLCR0_RFCK_SEL_156_25:
-		return "156.25";
-	case SRDS_PLLCR0_RFCK_SEL_161_13:
-		return "161.13";
-	default:
-		return "122.88";
-	}
-}
-
 #define NUM_SRDS_BANKS	2
 
 int misc_init_r(void)

board/freescale/corenet_ds/corenet_ds.c

@@ -127,20 +127,6 @@ int board_early_init_r(void)
 	return 0;
 }
 
-static const char *serdes_clock_to_string(u32 clock)
-{
-	switch(clock) {
-	case SRDS_PLLCR0_RFCK_SEL_100:
-		return "100";
-	case SRDS_PLLCR0_RFCK_SEL_125:
-		return "125";
-	case SRDS_PLLCR0_RFCK_SEL_156_25:
-		return "156.25";
-	default:
-		return "150";
-	}
-}
-
 #define NUM_SRDS_BANKS	3
 
 int misc_init_r(void)

board/freescale/p2041rdb/p2041rdb.c

@@ -155,20 +155,6 @@ unsigned long get_board_sys_clk(unsigned long dummy)
 	}
 }
 
-static const char *serdes_clock_to_string(u32 clock)
-{
-	switch (clock) {
-	case SRDS_PLLCR0_RFCK_SEL_100:
-		return "100";
-	case SRDS_PLLCR0_RFCK_SEL_125:
-		return "125";
-	case SRDS_PLLCR0_RFCK_SEL_156_25:
-		return "156.25";
-	default:
-		return "150";
-	}
-}
-
 #define NUM_SRDS_BANKS	2
 
 int misc_init_r(void)

board/freescale/t1040qds/t1040qds.c

@@ -160,20 +160,6 @@ unsigned long get_board_ddr_clk(void)
 	return 66666666;
 }
 
-static const char *serdes_clock_to_string(u32 clock)
-{
-	switch (clock) {
-	case SRDS_PLLCR0_RFCK_SEL_100:
-		return "100";
-	case SRDS_PLLCR0_RFCK_SEL_125:
-		return "125";
-	case SRDS_PLLCR0_RFCK_SEL_156_25:
-		return "156.25";
-	default:
-		return "Unknown frequency";
-	}
-}
-
 #define NUM_SRDS_BANKS	2
 int misc_init_r(void)
 {

board/freescale/t4qds/t4240qds.c

@@ -608,22 +608,6 @@ unsigned long get_board_ddr_clk(void)
 	return 66666666;
 }
 
-static const char *serdes_clock_to_string(u32 clock)
-{
-	switch (clock) {
-	case SRDS_PLLCR0_RFCK_SEL_100:
-		return "100";
-	case SRDS_PLLCR0_RFCK_SEL_125:
-		return "125";
-	case SRDS_PLLCR0_RFCK_SEL_156_25:
-		return "156.25";
-	case SRDS_PLLCR0_RFCK_SEL_161_13:
-		return "161.1328125";
-	default:
-		return "???";
-	}
-}
-
 int misc_init_r(void)
 {
 	u8 sw;