struct sh_mobile_sdhi_of_data {
        unsigned long tmio_flags;
+       unsigned long capabilities;
 };
 
 static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = {
        },
 };
 
+static const struct sh_mobile_sdhi_of_data of_rcar_gen1_compatible = {
+       .tmio_flags     = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE,
+       .capabilities   = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
+};
+
 static const struct of_device_id sh_mobile_sdhi_of_match[] = {
        { .compatible = "renesas,sdhi-shmobile" },
        { .compatible = "renesas,sdhi-sh7372" },
        { .compatible = "renesas,sdhi-sh73a0", .data = &sh_mobile_sdhi_of_cfg[0], },
        { .compatible = "renesas,sdhi-r8a73a4", .data = &sh_mobile_sdhi_of_cfg[0], },
        { .compatible = "renesas,sdhi-r8a7740", .data = &sh_mobile_sdhi_of_cfg[0], },
-       { .compatible = "renesas,sdhi-r8a7778", .data = &sh_mobile_sdhi_of_cfg[0], },
+       { .compatible = "renesas,sdhi-r8a7778", .data = &of_rcar_gen1_compatible, },
        { .compatible = "renesas,sdhi-r8a7779", .data = &sh_mobile_sdhi_of_cfg[0], },
        { .compatible = "renesas,sdhi-r8a7790", .data = &sh_mobile_sdhi_of_cfg[0], },
        {},
        if (of_id && of_id->data) {
                const struct sh_mobile_sdhi_of_data *of_data = of_id->data;
                mmc_data->flags |= of_data->tmio_flags;
+               mmc_data->capabilities |= of_data->capabilities;
        }
 
        /* SD control register space size is 0x100, 0x200 for bus_shift=1 */