From: luyulin <luyulin@xxxxxxxxxxxxxxxxxx>
Implements support for the Eswin EIC7700 SoC sata phy.
Implements the calling sequence to interface with dwc-ahci,
ensuring correct hardware execution order.
Integration with the Linux phy subsystem for consistency and
scalability.
Add documentation for ahci and sata phy on the ESWIN EIC7700
SoC platform.
Supported chips:
Eswin EIC7700 SoC.
Test:
Tested this patch on the Sifive HiFive Premier P550 (which uses
the EIC7700 SoC). Based on this driver, the SATA device read/write
operations are functioning normally, supporting SATA 1.5 Gb/s,
3.0 Gb/s, and 6.0 Gb/s speeds, so this verifies that this sata
driver patch is working properly.
This series depends on the vendor prefix patch [1] and config option patch [2].
[1] https://lore.kernel.org/all/20250616112316.3833343-4-pinkesh.vaghela@xxxxxxxxxxxxxx/
[2] https://lore.kernel.org/all/20250616112316.3833343-3-pinkesh.vaghela@xxxxxxxxxxxxxx/
Updates:
Changes since V1:
- Delete the original controller driver and use ahci_dwc.c instead.
- Add eswin,eic7700-ahci.yaml
- Correct the descriptions of reset, interrupt and other
hardware resources for the sata controller on EIC7700 SoC.
- The clocks for both sata controller and sata PHY are controlled
via a register bit in the HSP bus and are not registered in the
clock tree. Clock are managed within the PHY driver, therefore
it is not described in this document.
- Add $ref: snps,dwc-ahci-common.yaml#.
- Add eswin,eic7700-sata-phy.yaml
- Add this file to include the description of the PHY on EIC7700 SoC.
- Add an eswin directory under the PHY driver path, and include the SATA
PHY driver code for EIC7700 SoC.
- Link to v1: https://lore.kernel.org/all/20250515085114.1692-1-hehuan1@xxxxxxxxxxxxxxxxxx/
luyulin (3):
dt-bindings: ata: eswin: Document for EIC7700 SoC ahci
dt-bindings: phy: eswin: Document for EIC7700 SoC SATA
phy: eswin: Create eswin directory and add EIC7700 SATA PHY driver
.../bindings/ata/eswin,eic7700-ahci.yaml | 92 ++++++++
.../bindings/phy/eswin,eic7700-sata-phy.yaml | 36 ++++
drivers/phy/Kconfig | 1 +
drivers/phy/Makefile | 1 +
drivers/phy/eswin/Kconfig | 14 ++
drivers/phy/eswin/Makefile | 2 +
drivers/phy/eswin/phy-eic7700-sata.c | 197 ++++++++++++++++++
7 files changed, 343 insertions(+)
create mode 100644 Documentation/devicetree/bindings/ata/eswin,eic7700-ahci.yaml
create mode 100644 Documentation/devicetree/bindings/phy/eswin,eic7700-sata-phy.yaml
create mode 100644 drivers/phy/eswin/Kconfig
create mode 100644 drivers/phy/eswin/Makefile
create mode 100644 drivers/phy/eswin/phy-eic7700-sata.c
--
2.25.1
