opensbi.git/lib/utils, branch v1.9

lib: utils/reset: Add litex SoC reset driver

2026-06-15T04:40:25Z

Litex SoC controller supports reboot function by toggling the first bit of the ctrl register. Add a reset driver so other software can use it. Signed-off-by: Inochi Amaoto Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260529085234.1682842-1-inochiama@gmail.com Signed-off-by: Anup Patel

platform: generic: Optimize extensions_init() to parse ISA extensions once

2026-06-12T10:38:29Z

Instead of parsing ISA extensions separately for each hart in the generic_extensions_init() function, it is better to parse ISA extensions for all available harts in the cold boot path. Also, this allows us to remove fdt_isa_bitmap from scratch space and directly initialize "extensions" in struct sbi_hart_features for each hart. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260521082625.1520870-3-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Allow irqchip drivers advertise capabilities

2026-06-10T12:43:10Z

Extend struct sbi_irqchip_device to allow irqchip drivers advertise interrupt controller capabilities (such as wired interrupt, MSIs, etc). This further allows other parts of OpenSBI to lookup irqchip devices based on capabilities. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260608125257.3220114-2-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: utils/reset: Remove unused match data

2026-05-22T05:01:41Z

Some drivers inherited FDT match data from the GPIO/syscon reset drivers, but do not use it for anything. Remove it to avoid confusion. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260513224414.1078791-1-samuel.holland@sifive.com Signed-off-by: Anup Patel

lib: utils: fdt_domain: add root-regions-inheritance policy

2026-05-18T12:50:50Z

Introduce root-regions-inheritance DT property to control copying of root domain memregions. Support 'all' and 'm-only' modes, always inheriting firmware and M-only regions; behavior matches m-only policy when property is absent. Signed-off-by: Yu-Chien Peter Lin Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260516072906.1427203-1-peter.lin@sifive.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Allow marking hardware interrupts as reserved

2026-05-12T04:25:58Z

Some of the hardware interrupts may be special so allow irqchip drivers to make these hardware interrupts as reserved. Introduce sbi_irqchip_register_reserved() for this purpose. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260423052339.356900-5-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: sbi_irqchip: Allow interrupt client to specify line sensing

2026-05-12T04:25:58Z

The interrupt client should be allowed to specify the line sensing type of the hwirqs for which it is registering handler. To support this, add hwirq_flags parameter to hwirq_setup() callback provided by the irqchip driver. Signed-off-by: Anup Patel Link: https://lore.kernel.org/r/20260423052339.356900-4-anup.patel@oss.qualcomm.com Signed-off-by: Anup Patel

lib: utils/reset: add SpacemiT P1 PMIC support

2026-05-11T13:51:31Z

The SpacemiT P1 is a PMIC commonly found with SpacemiT CPU like K1. Add a reset driver for it. Signed-off-by: Aurelien Jarno Tested-by: Anand Moon Link: https://lore.kernel.org/r/20260419150857.2705843-3-aurelien@aurel32.net Signed-off-by: Anup Patel

lib: utils/i2c: add minimal SpacemiT I2C driver

2026-05-11T13:51:31Z

Add a simple SpacemiT I2C driver for basic byte transfers over the I2C bus, prioritizing simplicity over performance. The driver operates in PIO mode and does not use interrupts, FIFO, or DMA. The controller is reset at the start of each transaction to ensure a known initial state, regardless of prior configuration by the kernel. This also avoids the need for additional error recovery code. This will be used for communication with onboard PMIC to reset and power-off the board. Signed-off-by: Aurelien Jarno Tested-by: Anand Moon Link: https://lore.kernel.org/r/20260419150857.2705843-2-aurelien@aurel32.net Signed-off-by: Anup Patel

lib: utils/regmap: Fix reg_stride calculation in syscon regmap

2026-05-11T06:19:59Z

The reg_stride field represents the address stride in bytes between consecutive registers. The Linux kernel regmap framework validates register accesses using IS_ALIGNED(reg, map->reg_stride) as an address alignment check (drivers/base/regmap/regmap.c). The Linux kernel syscon driver (drivers/mfd/syscon.c) sets reg_stride directly to reg_io_width: syscon_config.reg_stride = reg_io_width; The current OpenSBI code incorrectly multiplies reg_io_width by 8, converting a byte value to bits. Fix this by using reg_io_width directly as the stride value, consistent with the Linux kernel. Fixes: f21d8f7d5911 ("lib: utils/regmap: Add simple FDT based syscon regmap driver") Signed-off-by: David E. Garcia Porras Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260403202903.3407945-1-david.garcia@aheadcomputing.com Signed-off-by: Anup Patel