[PATCH v2 0/9] riscv: spacemit: k1: add pinctrl/GPIO and SPI NOR support

[Guodong Xu]

This series adds pinctrl, GPIO, and SPI NOR flash support for the
SpacemiT K1.  Drivers are usable in both SPL and U-Boot proper.  In
SPL, the QSPI controller and SPI NOR flash are probed during early
init, and the SPL boot device is changed from memory-mapped NOR to
SPI so the common loader reads the next-stage image from NOR.  It
sits on top of the K1 SPL bring-up series [1], which depends on the
K1 clock/reset/dts migration series [4].

>From v2 I am taking over this submission from Raymond Mao, and
have re-authored some of the patches.  v1 is at [2].

To apply on origin/master, two prerequisite series on lore must be
applied first, in this order:

  1. K1 clock/reset/dts migration [4]    (8 patches)
  2. K1 SPL bring-up v4 [1]              (14 patches)
  3. This series                         (9 patches)

For each series:

  b4 am <cover-msgid>
  git am ./*.mbx

The full stack (already in apply order) is at [3].

BR,
Guodong Xu

Link: https://lore.kernel.org/u-boot/20260519-b4-k1-spl-bring-up-v4-0-3915a2a904c1@riscstar.com/ [1]
Link: https://lore.kernel.org/u-boot/20260422143112.1329478-1-raymondmaoca@gmail.com/ [2]
Link: https://github.com/docularxu/u-boot/tree/b4/k1-spl-pinctrl-spinor-v2 [3]
Link: https://lore.kernel.org/u-boot/20260510-b4-k1-clk-reset-upstream-dts-v1-0-db0b0503ee44@riscstar.com/ [4]

Dropped or absorbed from v1, seven v1 patches are not in v2:

Five touched the local arch/riscv/dts/k1*.dts that [1] removed in
the OF_UPSTREAM move.  The upstream K1 dts already provides the
pinctrl includes and the qspi at d420c000 node:

- v1  3/16  "dts: k1: fix gpio ranges"
- v1  4/16  "dts: k1: import pinctrl dts file from upstream folder"
- v1  5/16  "dts: k1: remove embedded subnode in pin configs"
- v1 10/16  "dts: k1: add QSPI controller support"
- v1 16/16  "spacemit: k1: rename device tree prefix from k1- to k1_"

Absorbed into SPL series v4 [1]:

- v1 13/16  "spacemit: k1: append RISCV_MMODE_TIMERBASE"
- v1 15/16  "spacemit: k1: Add support for mmc regulator initialization"

No new patches in v2.

Changes in v2 (vs v1):
- Drop the seven patches above.
- Patch 4/9, "spl: k1: enable SPI NOR flash detection and boot" (v1 11/16):
    - Adds QSPI controller and flash node to k1-musepi-pro-u-boot.dtsi with
      bootph-pre-ram markers,
    - switches default DT to k1-musepi-pro, and calls nor_early_init()
      from SPL.
- Patch 6/9 "spacemit: k1: Add multiple device tree support" (v1 14/16):
    - Reworked to use binman --fit-multi-config so u-boot.itb packs
    - multiple board DTs.
- Patch 8/9 "gpio: add gpio driver for Spacemit K1 SoC" (v1 1/16):
    - Add .request/.rfree ops delegating to pinctrl;
    - xlate() uses gpio_flags_xlate().
- Patch 9/9 "configs: k1: enable pinctrl and gpio" (v1 6/16):
    - Also enable CONFIG_CLK and CONFIG_CLK_CCF for U-Boot proper.

Link to v1: https://lore.kernel.org/u-boot/20260422143112.1329478-1-raymondmaoca@gmail.com/

Signed-off-by: Guodong Xu <guodong at riscstar.com>
---
Guodong Xu (3):
      spl: k1: enable SPI NOR flash detection and boot
      spacemit: k1: Add multiple device tree support
      configs: k1: enable pinctrl and gpio

Raymond Mao (6):
      mtd: spi: select SPL_SPI_FLASH_TINY in SPL stage
      mtd: spi: enable spi_nor_remove() in soft reset config
      spi: fsl: add support for Spacemit K1 SoC
      riscv: binman: Always set default configuration in FIT image
      pinctrl: add pinctrl driver for Spacemit K1 SoC
      gpio: add gpio driver for Spacemit K1 SoC

 arch/riscv/dts/binman.dtsi               |   2 -
 arch/riscv/dts/k1-musepi-pro-u-boot.dtsi | 273 +++++++++++++++
 board/spacemit/k1/MAINTAINERS            |   3 +
 board/spacemit/k1/spl.c                  |  56 +++-
 configs/spacemit_k1_defconfig            |  35 +-
 drivers/gpio/Kconfig                     |   8 +
 drivers/gpio/Makefile                    |   1 +
 drivers/gpio/spacemit_gpio.c             | 253 ++++++++++++++
 drivers/mtd/spi/Makefile                 |   5 +-
 drivers/mtd/spi/sf_probe.c               |   8 +-
 drivers/pinctrl/Kconfig                  |   1 +
 drivers/pinctrl/Makefile                 |   1 +
 drivers/pinctrl/spacemit/Kconfig         |   9 +
 drivers/pinctrl/spacemit/Makefile        |   2 +
 drivers/pinctrl/spacemit/pinctrl-k1.c    | 550 +++++++++++++++++++++++++++++++
 drivers/spi/fsl_qspi.c                   |   9 +
 16 files changed, 1201 insertions(+), 15 deletions(-)
---
base-commit: ba87dd05ec82c06673e98ea50d84cf062798af6e
change-id: 20260519-b4-k1-spl-pinctrl-spinor-c66649702a95

Best regards,
--  
Guodong Xu <guodong at riscstar.com>