Add support for the SD/eMMC Host Controller found in SpacemiT K1 SoC, The controller supports data transmission of MMC, SDIO, and SD protocol. The SD/eMMC Host Controller has the following features: - MMC/eMMC 5.1 specification compliant - Supports PIO mode and SDMA mode data transfer - Supports ADMA1 and ADMA 2 (64-bit addressing) data transfer - Supports 1-bit/4-bit SD memory and SDIO - Supports 1-bit/8-bit MMC and CE-ATA cards - SPI mode supported for eMMC card Full docs can be found at SpacemiT's developer web, chapter 10.4 SD/eMMC [1] In this patch series, only MMC part has been implemented and tested. This driver also requires clock support which currently isn't in mainline [2]. There is a WIP branch at SpacemiT's repo for people who interested [3]. I've marked this patch series as RFC, due to incomplete clock and SD/SDIO support. Link: https://developer.spacemit.com/documentation?token=WZNvwFDkYinYx0k9jzPcMK5WnIe [1] Link: https://lore.kernel.org/all/20250103215636.19967-2-heylenay@xxxxxxx/ [2] Link: https://github.com/spacemit-com/linux/tree/k1/wip-sdhci [3] Signed-off-by: Yixun Lan <dlan@xxxxxxxxxx> --- Yixun Lan (2): dt-bindings: mmc: spacemit,sdhci: add support for K1 SoC mmc: sdhci-of-k1: add support for SpacemiT K1 SoC .../devicetree/bindings/mmc/spacemit,sdhci.yaml | 53 ++++ drivers/mmc/host/Kconfig | 14 + drivers/mmc/host/Makefile | 1 + drivers/mmc/host/sdhci-of-k1.c | 320 +++++++++++++++++++++ 4 files changed, 388 insertions(+) --- base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b change-id: 20250212-20-k1-sdhci-76a4901030db Best regards, -- Yixun Lan
