mmc: core: Extend sysfs to ext_csd parameters for RPMB support

Extend current sysfs access to ext_csd rpmb parameters (RPMB partition
size) and rel_sector information.

Signed-off-by: Loic Pallardy <loic.pallardy@stericsson.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Johan Rudholm <johan.rudholm@stericsson.com>
Acked-by: Krishna Konda <kkonda@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/mmc/mmc-dev-attrs.txt b/Documentation/mmc/mmc-dev-attrs.txt
index 22ae8441489f..0d98fac8893b 100644
--- a/Documentation/mmc/mmc-dev-attrs.txt
+++ b/Documentation/mmc/mmc-dev-attrs.txt
@@ -25,6 +25,8 @@ All attributes are read-only.
         serial                  Product Serial Number (from CID Register)
         erase_size              Erase group size
         preferred_erase_size    Preferred erase size
+        raw_rpmb_size_mult      RPMB partition size
+        rel_sectors             Reliable write sector count
 
 Note on Erase Size and Preferred Erase Size:
 
@@ -65,6 +67,11 @@ Note on Erase Size and Preferred Erase Size:
 
         "preferred_erase_size" is in bytes.
 
+Note on raw_rpmb_size_mult:
+        "raw_rpmb_size_mult" is a mutliple of 128kB block.
+        RPMB size in byte is calculated by using the following equation:
+        RPMB partition size = 128kB x raw_rpmb_size_mult
+
 SD/MMC/SDIO Clock Gating Attribute
 ==================================