From 3969aa4804edb8aed7bcb3c958e49d0c7388b067 Mon Sep 17 00:00:00 2001 From: Quentin Schulz Date: Thu, 2 Dec 2021 17:19:10 +0100 Subject: [PATCH] mmc_cmds: add HS400 data rates MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit JEDEC 5.1 JESD84-B50.1 DEVICE_TYPE [196] specifies that bit 6 is for "HS400 Dual Data Rate e•MMC at 200 MHz – 1.8 V I/O" and bit 7 for "HS400 Dual Data Rate e•MMC at 200 MHz – 1.2 V I/O" so let's add those. Cc: Quentin Schulz Signed-off-by: Quentin Schulz Link: https://lore.kernel.org/r/20211202161910.3944640-1-quentin.schulz@theobroma-systems.com Signed-off-by: Ulf Hansson --- mmc_cmds.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mmc_cmds.c b/mmc_cmds.c index e07ec94..c5eea65 100644 --- a/mmc_cmds.c +++ b/mmc_cmds.c @@ -1612,6 +1612,8 @@ int do_read_extcsd(int nargs, char **argv) /* DEVICE_TYPE in A45, CARD_TYPE in A441 */ reg = ext_csd[196]; printf("Card Type [CARD_TYPE: 0x%02x]\n", reg); + if (reg & 0x80) printf(" HS400 Dual Data Rate eMMC @200MHz 1.2VI/O\n"); + if (reg & 0x40) printf(" HS400 Dual Data Rate eMMC @200MHz 1.8VI/O\n"); if (reg & 0x20) printf(" HS200 Single Data Rate eMMC @200MHz 1.2VI/O\n"); if (reg & 0x10) printf(" HS200 Single Data Rate eMMC @200MHz 1.8VI/O\n"); if (reg & 0x08) printf(" HS Dual Data Rate eMMC @52MHz 1.2VI/O\n");