From 8121cece25da8dad1dc91393f5285195997c71b1 Mon Sep 17 00:00:00 2001 From: Patrick Oppenlander Date: Fri, 14 Feb 2020 09:13:32 +1100 Subject: [PATCH] mmc-utils: Fix scaling of cache size JESD84-B51 7.4.30 CACHE_SIZE [252:249] states that "the size is indicated as multiple of kilobits". This is also supported by Table 39, "e.MMC internal sizes and related Units / Granularities" which lists "32Kb (=4KB)" as the cache size granularity for 4KiB native devices. Signed-off-by: Patrick Oppenlander Reviewed-by: Avri Altman --- mmc_cmds.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/mmc_cmds.c +++ b/mmc_cmds.c @@ -1427,8 +1427,8 @@ int do_read_extcsd(int nargs, char **arg printf("Power off notification [POWER_OFF_LONG_TIME: 0x%02x]\n", ext_csd[247]); printf("Cache Size [CACHE_SIZE] is %d KiB\n", - ext_csd[249] << 0 | (ext_csd[250] << 8) | - (ext_csd[251] << 16) | (ext_csd[252] << 24)); + (ext_csd[249] << 0 | (ext_csd[250] << 8) | + (ext_csd[251] << 16) | (ext_csd[252] << 24)) / 8); } /* A441: Reserved [501:247]