+int renesas_sdhi_get_b_max(struct udevice *dev, void *dst, lbaint_t blkcnt)
+{
+ struct tmio_sd_priv *priv = dev_get_priv(dev);
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct mmc *mmc = upriv->mmc;
+ size_t len = blkcnt * mmc->read_bl_len;
+ size_t len_align = roundup(len, RENESAS_SDHI_DMA_ALIGNMENT);
+
+ if (renesas_sdhi_addr_aligned_gen((uintptr_t)dst, len, len_align)) {
+ if (priv->quirks & TMIO_SD_CAP_16BIT)
+ return U16_MAX;
+ else
+ return U32_MAX;
+ } else {
+ return (CONFIG_SYS_MALLOC_LEN / 4) / mmc->read_bl_len;
+ }
+}
+