diff --git a/arch/arm/dts/ulcb.dtsi b/arch/arm/dts/ulcb.dtsi
index f66727c..ab88665 100644
--- a/arch/arm/dts/ulcb.dtsi
+++ b/arch/arm/dts/ulcb.dtsi
@@ -24,6 +24,15 @@
 		stdout-path = "serial0:115200n8";
 	};
 
+	cpld {
+		compatible = "renesas,ulcb-cpld";
+		status = "okay";
+		gpio-sck = <&gpio6 8 0>;
+		gpio-mosi = <&gpio6 7 0>;
+		gpio-miso = <&gpio6 10 0>;
+		gpio-sstbz = <&gpio2 3 0>;
+	};
+
 	audio_clkout: audio-clkout {
 		/*
 		 * This is same as <&rcar_sound 0>
diff --git a/drivers/mmc/tmio-common.c b/drivers/mmc/tmio-common.c
index b311b80..138de59 100644
--- a/drivers/mmc/tmio-common.c
+++ b/drivers/mmc/tmio-common.c
@@ -372,11 +372,19 @@ static int tmio_sd_dma_xfer(struct udevice *dev, struct mmc_data *data)
 }
 
 /* check if the address is DMA'able */
-static bool tmio_sd_addr_is_dmaable(unsigned long addr)
+static bool tmio_sd_addr_is_dmaable(const char *src)
 {
+	uintptr_t addr = (uintptr_t)src;
+
 	if (!IS_ALIGNED(addr, TMIO_SD_DMA_MINALIGN))
 		return false;
 
+#if defined(CONFIG_RCAR_GEN3)
+	/* Gen3 DMA has 32bit limit */
+	if (addr >> 32)
+		return false;
+#endif
+
 #if defined(CONFIG_ARCH_UNIPHIER) && !defined(CONFIG_ARM64) && \
 	defined(CONFIG_SPL_BUILD)
 	/*
@@ -486,7 +494,7 @@ int tmio_sd_send_cmd(struct udevice *dev, struct mmc_cmd *cmd,
 	if (data) {
 		/* use DMA if the HW supports it and the buffer is aligned */
 		if (priv->caps & TMIO_SD_CAP_DMA_INTERNAL &&
-		    tmio_sd_addr_is_dmaable((long)data->src))
+		    tmio_sd_addr_is_dmaable(data->src))
 			ret = tmio_sd_dma_xfer(dev, data);
 		else
 			ret = tmio_sd_pio_xfer(dev, data);