[sdio]开启emmc内部cache加快传输 (#7896)

1 files changed, 6 insertions, 1 deletions

diff --git a/components/drivers/include/drivers/mmcsd_card.h b/components/drivers/include/drivers/mmcsd_card.h
index da10d1ecc6..d348c9affa 100644
--- a/components/drivers/include/drivers/mmcsd_card.h
+++ b/components/drivers/include/drivers/mmcsd_card.h
@@ -127,7 +127,10 @@ struct rt_sdio_function {
 
 #define SDIO_MAX_FUNCTIONS      7
 
-
+struct rt_mmc_ext_csd
+{
+    rt_uint32_t cache_size;
+};
 
 struct rt_mmcsd_card {
     struct rt_mmcsd_host *host;
@@ -164,6 +167,8 @@ struct rt_mmcsd_card {
     struct rt_sdio_cis     cis;  /* common tuple info */
     struct rt_sdio_function *sdio_function[SDIO_MAX_FUNCTIONS + 1]; /* SDIO functions (devices) */
     rt_list_t blk_devices;  /* for block device list */
+
+    struct rt_mmc_ext_csd ext_csd;
 };
 
 #ifdef __cplusplus