[PATCH 0/4] Add eMMC support for Axiado SCM3005 board

This series adds eMMC support for the Axiado SCM3005 board, based on the
AX3005 SoC, which uses an Arasan SDHCI controller paired with a dedicated
eMMC PHY.

The series is split as follows:

  - Patch 1 adds the eMMC PHY driver (PHY_AXIADO_EMMC). The PHY provides
    signal conditioning and DLL functionality required for high-speed
    operation with data rates beyond 52MHz, and is based on the Arasan
    PHY.

  - Patch 2 adds the SDHCI host controller driver (MMC_SDHCI_AXIADO) for
    the Arasan controller. It builds on the generic SDHCI framework and
    adds SoC-specific signal voltage switching, HS200 tuning and eMMC PHY
    power sequencing through the generic PHY API.

  - Patch 3 adds the device tree nodes for the SDHCI controller, the eMMC
    PHY and their supporting fixed clock (clk_xin) to
    ax3005.dtsi, and enables the SDHCI node in ax3005-scm3005.dts.

  - Patch 4 enables the new drivers in ax3005_scm3005_defconfig, stores
    the environment in MMC and bumps CONFIG_SYS_MALLOC_LEN to 0x400000 to
    accommodate MMC operations.

Tested on the Axiado SCM3005 board: the eMMC is detected and enumerated,
and read/write access through the MMC subsystem works, including
high-speed modes exercised by the PHY tuning path.

Signed-off-by: Siu Ming Tong <[email protected]>
---
Siu Ming Tong (4):
      phy: Add Axiado eMMC PHY driver
      mmc: Add Axiado SDHCI driver
      arm: dts: ax3005: Add SDHCI, eMMC PHY and clock node
      configs: ax3005_scm3005: Enable eMMC support

 MAINTAINERS                      |   2 +
 arch/arm/dts/ax3005-scm3005.dts  |   4 +
 arch/arm/dts/ax3005.dtsi         |  25 ++++
 configs/ax3005_scm3005_defconfig |  10 +-
 drivers/mmc/Kconfig              |   7 +
 drivers/mmc/Makefile             |   1 +
 drivers/mmc/axiado_sdhci.c       | 311 +++++++++++++++++++++++++++++++++++++++
 drivers/phy/Kconfig              |   9 ++
 drivers/phy/Makefile             |   1 +
 drivers/phy/phy-axiado-emmc.c    | 208 ++++++++++++++++++++++++++
 10 files changed, 576 insertions(+), 2 deletions(-)
---
base-commit: 02f8b8ab6d6095dccf867d899099322f7430d20d
change-id: 20260727-dev-scm3005-d62c69354074

Best regards,
--  
Siu Ming Tong <[email protected]>