[v6,0/7] Initial support for RK3576 UFS controller

Message

Shawn Lin Jan. 21, 2025, 3 a.m. UTC

This patchset adds initial UFS controller supprt for RK3576 SoC.
Patch 1 is the dt-bindings. Patch 2-4 deal with rpm and spm support
in advanced suggested by Ulf. Patch 5 exports two new APIs for host
driver. Patch 6 and 7 are the host driver and dtsi support.


Changes in v6:
- export dev_pm_genpd_rpm_always_on()
- replace host drivers with glue drivers suggested by Mani
- add Main's review tag
- remove UFS_MAX_CLKS
- improve err log
- remove hardcoded clocks
- remove comment from ufs_rockchip_device_reset()
- remove pm_runtime_* from ufs_rockchip_remove()
- rebase to scsi/next
- move ufs_rockchip_set_pm_lvl to ufs_rockchip_rk3576_init()
- add comments about device_set_awake_path()
- remove comments suggested by Mani

Changes in v5:
- fix indentation to 4 spaces suggested by Krzysztof
- use ufshc for devicetree example suggested by Mani
- fix a compile warning
- use device_set_awake_path() and disable ref_out_clk in suspend
- remove pd_id from header
- reconstruct ufs_rockchip_hce_enable_notify() to workaround hce enable
  without using new quirk

Changes in v4:
- properly describe reset-gpios
- deal with power domain of rpm and spm suggested by Ulf
- Fix typo and disable clks in ufs_rockchip_remove
- remove clk_disable_unprepare(host->ref_out_clk) from
  ufs_rockchip_remove

Changes in v3:
- rename the file to rockchip,rk3576-ufshc.yaml
- add description for reset-gpios
- use rockchip,rk3576-ufshc as compatible
- reword Kconfig description
- elaborate more about controller in commit msg
- use rockchip,rk3576-ufshc for compatible
- remove useless header file
- remove inline for ufshcd_is_device_present
- use usleep_range instead
- remove initialization, reverse Xmas order
- remove useless varibles
- check vops for null
- other small fixes for err path
- remove pm_runtime_set_active
- fix the active and inactive reset-gpios logic
- fix rpm_lvl and spm_lvl to 5 and move to end of probe path
- remove unnecessary system PM callbacks
- use UFSHCI_QUIRK_DME_RESET_ENABLE_AFTER_HCE instead
  of UFSHCI_QUIRK_BROKEN_HCE

Changes in v2:
- rename the file
- add reset-gpios

Shawn Lin (6):
  dt-bindings: ufs: Document Rockchip UFS host controller
  soc: rockchip: add header for suspend mode SIP interface
  pmdomain: rockchip: Add smc call to inform firmware
  scsi: ufs: core: Export ufshcd_dme_reset() and ufshcd_dme_enable()
  scsi: ufs: rockchip: initial support for UFS
  arm64: dts: rockchip: Add UFS support for RK3576 SoC

Ulf Hansson (1):
  pmdomain: core: Introduce dev_pm_genpd_rpm_always_on()

 .../bindings/ufs/rockchip,rk3576-ufshc.yaml        | 105 ++++++
 arch/arm64/boot/dts/rockchip/rk3576.dtsi           |  24 ++
 drivers/pmdomain/core.c                            |  35 ++
 drivers/pmdomain/rockchip/pm-domains.c             |   8 +
 drivers/ufs/core/ufshcd.c                          |   6 +-
 drivers/ufs/host/Kconfig                           |  12 +
 drivers/ufs/host/Makefile                          |   1 +
 drivers/ufs/host/ufs-rockchip.c                    | 363 +++++++++++++++++++++
 drivers/ufs/host/ufs-rockchip.h                    |  46 +++
 include/linux/pm_domain.h                          |   7 +
 include/soc/rockchip/rockchip_sip.h                |   3 +
 include/ufs/ufshcd.h                               |   2 +
 12 files changed, 610 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/ufs/rockchip,rk3576-ufshc.yaml
 create mode 100644 drivers/ufs/host/ufs-rockchip.c
 create mode 100644 drivers/ufs/host/ufs-rockchip.h