diff --git a/arch/powerpc/platforms/512x/clock-commonclk.c b/arch/powerpc/platforms/512x/clock-commonclk.c
index 30342b60aa63..0b03d812baae 100644
--- a/arch/powerpc/platforms/512x/clock-commonclk.c
+++ b/arch/powerpc/platforms/512x/clock-commonclk.c
@@ -97,7 +97,7 @@ static enum soc_type {
 	MPC512x_SOC_MPC5125,
 } soc;
 
-static void mpc512x_clk_determine_soc(void)
+static void __init mpc512x_clk_determine_soc(void)
 {
 	if (of_machine_is_compatible("fsl,mpc5121")) {
 		soc = MPC512x_SOC_MPC5121;
@@ -113,98 +113,98 @@ static void mpc512x_clk_determine_soc(void)
 	}
 }
 
-static bool soc_has_mbx(void)
+static bool __init soc_has_mbx(void)
 {
 	if (soc == MPC512x_SOC_MPC5121)
 		return true;
 	return false;
 }
 
-static bool soc_has_axe(void)
+static bool __init soc_has_axe(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return false;
 	return true;
 }
 
-static bool soc_has_viu(void)
+static bool __init soc_has_viu(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return false;
 	return true;
 }
 
-static bool soc_has_spdif(void)
+static bool __init soc_has_spdif(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return false;
 	return true;
 }
 
-static bool soc_has_pata(void)
+static bool __init soc_has_pata(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return false;
 	return true;
 }
 
-static bool soc_has_sata(void)
+static bool __init soc_has_sata(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return false;
 	return true;
 }
 
-static bool soc_has_pci(void)
+static bool __init soc_has_pci(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return false;
 	return true;
 }
 
-static bool soc_has_fec2(void)
+static bool __init soc_has_fec2(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return true;
 	return false;
 }
 
-static int soc_max_pscnum(void)
+static int __init soc_max_pscnum(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return 10;
 	return 12;
 }
 
-static bool soc_has_sdhc2(void)
+static bool __init soc_has_sdhc2(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return true;
 	return false;
 }
 
-static bool soc_has_nfc_5125(void)
+static bool __init soc_has_nfc_5125(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return true;
 	return false;
 }
 
-static bool soc_has_outclk(void)
+static bool __init soc_has_outclk(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return true;
 	return false;
 }
 
-static bool soc_has_cpmf_0_bypass(void)
+static bool __init soc_has_cpmf_0_bypass(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return true;
 	return false;
 }
 
-static bool soc_has_mclk_mux0_canin(void)
+static bool __init soc_has_mclk_mux0_canin(void)
 {
 	if (soc == MPC512x_SOC_MPC5125)
 		return true;
@@ -294,7 +294,7 @@ static inline int get_bit_field(uint32_t __iomem *reg, uint8_t pos, uint8_t len)
 }
 
 /* get the SPMF and translate it into the "sys pll" multiplier */
-static int get_spmf_mult(void)
+static int __init get_spmf_mult(void)
 {
 	static int spmf_to_mult[] = {
 		68, 1, 12, 16, 20, 24, 28, 32,
@@ -312,7 +312,7 @@ static int get_spmf_mult(void)
  * values returned from here are a multiple of the real factor since the
  * divide ratio is fractional
  */
-static int get_sys_div_x2(void)
+static int __init get_sys_div_x2(void)
 {
 	static int sysdiv_code_to_x2[] = {
 		4, 5, 6, 7, 8, 9, 10, 14,
@@ -333,7 +333,7 @@ static int get_sys_div_x2(void)
  * values returned from here are a multiple of the real factor since the
  * multiplier ratio is fractional
  */
-static int get_cpmf_mult_x2(void)
+static int __init get_cpmf_mult_x2(void)
 {
 	static int cpmf_to_mult_x36[] = {
 		/* 0b000 is "times 36" */
@@ -379,7 +379,7 @@ static const struct clk_div_table divtab_1234[] = {
 	{ .div = 0, },
 };
 
-static int get_freq_from_dt(char *propname)
+static int __init get_freq_from_dt(char *propname)
 {
 	struct device_node *np;
 	const unsigned int *prop;
@@ -396,7 +396,7 @@ static int get_freq_from_dt(char *propname)
 	return val;
 }
 
-static void mpc512x_clk_preset_data(void)
+static void __init mpc512x_clk_preset_data(void)
 {
 	size_t i;
 
@@ -418,7 +418,7 @@ static void mpc512x_clk_preset_data(void)
  *   SYS -> CSB -> IPS) from the REF clock rate and the returned mul/div
  *   values
  */
-static void mpc512x_clk_setup_ref_clock(struct device_node *np, int bus_freq,
+static void __init mpc512x_clk_setup_ref_clock(struct device_node *np, int bus_freq,
 					int *sys_mul, int *sys_div,
 					int *ips_div)
 {
@@ -592,7 +592,7 @@ static struct mclk_setup_data mclk_outclk_data[] = {
 };
 
 /* setup the MCLK clock subtree of an individual PSC/MSCAN/SPDIF */
-static void mpc512x_clk_setup_mclk(struct mclk_setup_data *entry, size_t idx)
+static void __init mpc512x_clk_setup_mclk(struct mclk_setup_data *entry, size_t idx)
 {
 	size_t clks_idx_pub, clks_idx_int;
 	u32 __iomem *mccr_reg;	/* MCLK control register (mux, en, div) */
@@ -701,7 +701,7 @@ static void mpc512x_clk_setup_mclk(struct mclk_setup_data *entry, size_t idx)
 
 /* }}} MCLK helpers */
 
-static void mpc512x_clk_setup_clock_tree(struct device_node *np, int busfreq)
+static void __init mpc512x_clk_setup_clock_tree(struct device_node *np, int busfreq)
 {
 	int sys_mul, sys_div, ips_div;
 	int mul, div;
@@ -937,7 +937,7 @@ static void mpc512x_clk_setup_clock_tree(struct device_node *np, int busfreq)
  * registers the set of public clocks (those listed in the dt-bindings/
  * header file) for OF lookups, keeps the intermediates private to us
  */
-static void mpc5121_clk_register_of_provider(struct device_node *np)
+static void __init mpc5121_clk_register_of_provider(struct device_node *np)
 {
 	clk_data.clks = clks;
 	clk_data.clk_num = MPC512x_CLK_LAST_PUBLIC + 1;	/* _not_ ARRAY_SIZE() */
@@ -948,7 +948,7 @@ static void mpc5121_clk_register_of_provider(struct device_node *np)
  * temporary support for the period of time between introduction of CCF
  * support and the adjustment of peripheral drivers to OF based lookups
  */
-static void mpc5121_clk_provide_migration_support(void)
+static void __init mpc5121_clk_provide_migration_support(void)
 {
 
 	/*
@@ -1009,7 +1009,7 @@ static void mpc5121_clk_provide_migration_support(void)
  * case of not yet adjusted device tree data, where clock related specs
  * are missing)
  */
-static void mpc5121_clk_provide_backwards_compat(void)
+static void __init mpc5121_clk_provide_backwards_compat(void)
 {
 	enum did_reg_flags {
 		DID_REG_PSC	= BIT(0),
diff --git a/arch/powerpc/platforms/512x/mpc512x.h b/arch/powerpc/platforms/512x/mpc512x.h
index fff225901e2f..2f3c60e373e1 100644
--- a/arch/powerpc/platforms/512x/mpc512x.h
+++ b/arch/powerpc/platforms/512x/mpc512x.h
@@ -12,8 +12,8 @@ extern void __init mpc512x_init_early(void);
 extern void __init mpc512x_init(void);
 extern void __init mpc512x_setup_arch(void);
 extern int __init mpc5121_clk_init(void);
-extern const char *mpc512x_select_psc_compat(void);
-extern const char *mpc512x_select_reset_compat(void);
+const char *__init mpc512x_select_psc_compat(void);
+const char *__init mpc512x_select_reset_compat(void);
 extern void __noreturn mpc512x_restart(char *cmd);
 
 #endif				/* __MPC512X_H__ */
diff --git a/arch/powerpc/platforms/512x/mpc512x_shared.c b/arch/powerpc/platforms/512x/mpc512x_shared.c
index 7a9ae9591d60..e3411663edad 100644
--- a/arch/powerpc/platforms/512x/mpc512x_shared.c
+++ b/arch/powerpc/platforms/512x/mpc512x_shared.c
@@ -352,7 +352,7 @@ static void __init mpc512x_declare_of_platform_devices(void)
 
 #define DEFAULT_FIFO_SIZE 16
 
-const char *mpc512x_select_psc_compat(void)
+const char *__init mpc512x_select_psc_compat(void)
 {
 	if (of_machine_is_compatible("fsl,mpc5121"))
 		return "fsl,mpc5121-psc";
@@ -363,7 +363,7 @@ const char *mpc512x_select_psc_compat(void)
 	return NULL;
 }
 
-const char *mpc512x_select_reset_compat(void)
+const char *__init mpc512x_select_reset_compat(void)
 {
 	if (of_machine_is_compatible("fsl,mpc5121"))
 		return "fsl,mpc5121-reset";