mmc: core: Indicate SD specs higher than 4.0

SD specs version 4.x and 5.x have a dedicated slices in the SCR register.
Higher versions will rely on a combination of the existing fields.

Signed-off-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Avri Altman 2019-02-06 13:28:06 +02:00 committed by Ulf Hansson
parent 01904ff776
commit 68539e2bc3
2 changed files with 7 additions and 0 deletions

View File

@ -209,6 +209,11 @@ static int mmc_decode_scr(struct mmc_card *card)
/* Check if Physical Layer Spec v3.0 is supported */
scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1);
if (scr->sda_spec3) {
scr->sda_spec4 = UNSTUFF_BITS(resp, 42, 1);
scr->sda_specx = UNSTUFF_BITS(resp, 38, 4);
}
if (UNSTUFF_BITS(resp, 55, 1))
card->erased_byte = 0xFF;
else

View File

@ -133,6 +133,8 @@ struct mmc_ext_csd {
struct sd_scr {
unsigned char sda_vsn;
unsigned char sda_spec3;
unsigned char sda_spec4;
unsigned char sda_specx;
unsigned char bus_widths;
#define SD_SCR_BUS_WIDTH_1 (1<<0)
#define SD_SCR_BUS_WIDTH_4 (1<<2)