u-boot.git/drivers/pinctrl/aspeed, branch main

pinctrl: aspeed: Add AST2700 SoC1 pinconf support

2026-07-14T21:40:20Z

The SoC1 SCU provides a bias enable bit per pin in the registers at 0x480 (setting the bit disables the bias; the pull direction is fixed in silicon) and 2-bit drive strength fields at 0x4C0 selecting 4 mA to 16 mA in 4 mA steps. The pin-to-field mapping of the drive strength registers is sparse and non-linear, so it is kept in a lookup table mirroring the Linux driver; pins without an entry reject drive-strength with -ENOTSUPP. Support the bias-disable, bias-pull-down, bias-pull-up and drive-strength properties per pin and per group, and select PINCONF so the generic pinctrl framework parses them. Signed-off-by: Billy Tsai

pinctrl: aspeed: Add AST2700 SoC1 pinctrl driver

2026-07-14T21:40:20Z

Add the pinctrl driver for the AST2700 SoC1 (I/O) die. Unlike previous Aspeed generations, the SoC1 SCU assigns every pin a 4-bit multi-function selector field in a contiguous register range starting at SCU 0x400, eight pins per register. Only bits [2:0] of each field select the function; bit 3 is reserved read-only and must not be written. The driver therefore keeps per-pin group tables and per-function mux values, mirroring the Linux aspeed,ast2700-soc1-pinctrl driver, and shares the same device tree bindings: 220 pins, 238 groups and 217 functions with identical names, so pin states written for the Linux driver work unmodified. A few controls live outside the pin-indexed range and are handled as virtual pins: PCIERC2_PERST (SCU 0x908), the USB2 port C/D mode fields (SCU 0x3B0) and SGMII0 (SCU 0x47C). The gpio_request_enable hook restores a pin to GPIO by writing mux value 0, except for the ADC-capable balls W17..AB19 where function 1 selects GPIO and 0 selects the ADC input. Signed-off-by: Billy Tsai

pinctrl: aspeed: Add AST2700 SoC0 pinconf support

2026-07-14T21:40:20Z

Each GPIO18A/GPIO18B ball has its own IO control register starting at SCU 0x480, providing a 4-bit drive strength selector (3 mA to 41 mA in hardware-defined steps), a bias enable bit and a pull direction bit. Extend the group table with the pin members of the ball-backed groups so bias-disable, bias-pull-down, bias-pull-up and drive-strength properties can be applied per group as well as per pin. The routing groups (USB, JTAG, PCIe RC) have no package balls and reject pin configuration with -ENOTSUPP. Select PINCONF so the generic pinctrl framework parses the pin configuration properties. Signed-off-by: Billy Tsai

pinctrl: aspeed: Add AST2700 SoC0 pinctrl driver

2026-07-14T21:40:20Z

The AST2700 is a dual-die BMC SoC: SoC0 (CPU die) and SoC1 (I/O die) each have their own SCU with independent multi-function pin controls. Add the pinctrl driver for the SoC0 die. The driver uses the generic pinctrl framework and is compatible with the Linux kernel device tree bindings, i.e. pin states are described with the same "function" and "groups" properties and the same names as the Linux aspeed,ast2700-soc0-pinctrl driver. Unlike the older AST2500/AST2600 SCUs where each signal is enabled by independent bits, the SoC0 mux selections mix single-bit enables (eMMC, VGA DDC, VB strap), multi-bit selector fields (JTAG master port select, USB2/USB3 port routing) and reset-control bits (PCIe RC PERST). Model each (function, group) pair as one register mask/value write so all of them fit a single flat table. The gpio_request_enable hook releases the GPIO18A/GPIO18B pins to GPIO mode by clearing every signal enable bit that claims the pin, matching the Linux driver behaviour. Signed-off-by: Billy Tsai

ARM: dts: ast2600: Add SGPIO to device tree

2024-10-29T18:12:04Z

Add SGPIO DTS node and enable them for AST2600 EVB. Signed-off-by: Billy Tsai

ARM: dts: ast2500: Add SGPIO to device tree

2024-10-29T18:12:04Z

Add SGPIO DTS node and enable it for AST2500 EVB. Signed-off-by: Billy Tsai

Restore patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"

2024-05-20T19:35:03Z

As part of bringing the master branch back in to next, we need to allow for all of these changes to exist here. Reported-by: Jonas Karlman Signed-off-by: Tom Rini

Revert "Merge patch series "arm: dts: am62-beagleplay: Fix Beagleplay Ethernet""

2024-05-19T14:16:36Z

When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman Signed-off-by: Tom Rini

pinctrl: Remove and add needed includes

2024-05-07T14:00:56Z

Remove from this driver directory and when needed add missing include files directly. Reviewed-by: Peter Robinson Signed-off-by: Tom Rini

pinctrl: aspeed: add pass-through pins and siopbi/siopbo

2024-03-01T21:35:52Z

Add THRU0-3 and SIOPBI/SIOPBO pin groups/functions. Signed-off-by: Ivan Mikhaylov