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commit 3d14873faabd0c7ba2325cdbfe4b2391360cc425 Author: Arjav Patel <[email protected]> AuthorDate: Tue Mar 17 21:42:43 2026 +0530 docs/sdio: add reference to card initialization flowchart This update enhances the SDIO documentation by including a reference to the card initialization flowchart in the MMC/SD physical layer specification. This addition aims to provide implementers with a clearer understanding of the complete card initialization and command sequence. Signed-off-by: Arjav Patel <[email protected]> --- Documentation/components/drivers/special/sdio.rst | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/components/drivers/special/sdio.rst b/Documentation/components/drivers/special/sdio.rst index 876b6fea2a0..6822b82d388 100644 --- a/Documentation/components/drivers/special/sdio.rst +++ b/Documentation/components/drivers/special/sdio.rst @@ -53,6 +53,10 @@ lower-half, a simplified interaction around CMD9 looks like this: 3. ``SDIO_RECVR2``: Retrieve the 136-bit response and provide the decoded 128-bit CID/CSD payload to the MMCSD upper-half. +For the complete card initialization and command sequence, refer to the +card initialization flowchart in the MMC/SD physical layer +specification. + R2 (136-bit) response and CSD/CID ---------------------------------
