git.ipfire.org Git - thirdparty/openwrt.git/blob

   1 From 0cb8bad9e0932a9c8e254655e328d13cbe6dbcf6 Mon Sep 17 00:00:00 2001
   2 From: Jonathan Bell <jonathan@raspberrypi.com>
   3 Date: Wed, 8 Jan 2025 15:18:33 +0000
   4 Subject: [PATCH] mmc: set MMC_QUIRK_KNOWN_WORKING_SD_CQ on Raspberry Pi class
   5  A2 cards
   6
   7 These cards have a known-good CQ implementation and are based on a
   8 Longsys product. Add the MANFID for Longsys SD, and the particular CID
   9 details for the Pi card.
  10
  11 Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
  12 ---
  13  drivers/mmc/core/card.h   | 1 +
  14  drivers/mmc/core/quirks.h | 6 ++++++
  15  2 files changed, 7 insertions(+)
  16
  17 --- a/drivers/mmc/core/card.h
  18 +++ b/drivers/mmc/core/card.h
  19 @@ -93,6 +93,7 @@ struct mmc_fixup {
  20  #define CID_MANFID_KINGSTON     0x70
  21  #define CID_MANFID_HYNIX       0x90
  22  #define CID_MANFID_KINGSTON_SD 0x9F
  23 +#define CID_MANFID_LONGSYS_SD  0xAD
  24  #define CID_MANFID_NUMONYX     0xFE
  25
  26  #define END_FIXUP { NULL }
  27 --- a/drivers/mmc/core/quirks.h
  28 +++ b/drivers/mmc/core/quirks.h
  29 @@ -66,6 +66,12 @@ static const struct mmc_fixup __maybe_un
  30                    0, -1ull, SDIO_ANY_ID, SDIO_ANY_ID, add_quirk_sd,
  31                    MMC_QUIRK_BROKEN_SD_CACHE, EXT_CSD_REV_ANY),
  32
  33 +       /* SD A2 allow-list - only trust CQ on these cards */
  34 +       /* Raspberry Pi A2 cards */
  35 +       _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_LONGSYS_SD, 0x4c53, CID_YEAR_ANY, CID_MONTH_ANY,
  36 +                  cid_rev(1, 0, 0, 0), -1ull, SDIO_ANY_ID, SDIO_ANY_ID, add_quirk_sd,
  37 +                  MMC_QUIRK_WORKING_SD_CQ, EXT_CSD_REV_ANY),
  38 +
  39         END_FIXUP
  40  };
  41