diff --git a/drivers/st/clk/stm32mp1_clk.c b/drivers/st/clk/stm32mp1_clk.c
index a16f36d..540c66a 100644
--- a/drivers/st/clk/stm32mp1_clk.c
+++ b/drivers/st/clk/stm32mp1_clk.c
@@ -1240,7 +1240,8 @@
 	uintptr_t clksrc_address = rcc_base + (clksrc >> 4);
 	unsigned long refclk;
 	uint32_t ifrge = 0U;
-	uint32_t src, value, fracv;
+	uint32_t src, value, fracv = 0;
+	void *fdt;
 
 	/* Check PLL output */
 	if (mmio_read_32(pllxcr) != RCC_PLLNCR_PLLON) {
@@ -1279,7 +1280,9 @@
 	}
 
 	/* Fractional configuration */
-	fracv = fdt_read_uint32_default(plloff, "frac", 0);
+	if (fdt_get_address(&fdt) == 1) {
+		fracv = fdt_read_uint32_default(fdt, plloff, "frac", 0);
+	}
 
 	value = fracv << RCC_PLLNFRACR_FRACV_SHIFT;
 	value |= RCC_PLLNFRACR_FRACLE;
@@ -1800,7 +1803,7 @@
 			continue;
 		}
 
-		fracv = fdt_read_uint32_default(plloff[i], "frac", 0);
+		fracv = fdt_read_uint32_default(fdt, plloff[i], "frac", 0);
 
 		ret = stm32mp1_pll_config(i, pllcfg[i], fracv);
 		if (ret != 0) {
diff --git a/drivers/st/clk/stm32mp_clkfunc.c b/drivers/st/clk/stm32mp_clkfunc.c
index 6404d99..e87ab1b 100644
--- a/drivers/st/clk/stm32mp_clkfunc.c
+++ b/drivers/st/clk/stm32mp_clkfunc.c
@@ -151,7 +151,8 @@
 			continue;
 		}
 
-		return fdt_read_uint32_default(subnode, prop_name, dflt_value);
+		return fdt_read_uint32_default(fdt, subnode, prop_name,
+					       dflt_value);
 	}
 
 	return dflt_value;
diff --git a/drivers/st/ddr/stm32mp1_ram.c b/drivers/st/ddr/stm32mp1_ram.c
index 273dec0..b21c894 100644
--- a/drivers/st/ddr/stm32mp1_ram.c
+++ b/drivers/st/ddr/stm32mp1_ram.c
@@ -206,13 +206,13 @@
 		return -EINVAL;
 	}
 
-	config.info.speed = fdt_read_uint32_default(node, "st,mem-speed", 0);
-	if (!config.info.speed) {
+	ret = fdt_read_uint32(fdt, node, "st,mem-speed", &config.info.speed);
+	if (ret < 0) {
 		VERBOSE("%s: no st,mem-speed\n", __func__);
 		return -EINVAL;
 	}
-	config.info.size = fdt_read_uint32_default(node, "st,mem-size", 0);
-	if (!config.info.size) {
+	ret = fdt_read_uint32(fdt, node, "st,mem-size", &config.info.size);
+	if (ret < 0) {
 		VERBOSE("%s: no st,mem-size\n", __func__);
 		return -EINVAL;
 	}