u-boot.git/drivers/timer/goldfish_timer.c, branch main

timer: goldfish: Return error when device address is invalid

2026-06-23T18:38:01Z

goldfish_timer_of_to_plat() currently returns success even when dev_read_addr() fails to find a valid address. This leaves plat->reg unset and defers the failure to probe(). Return -EINVAL immediately when the address is FDT_ADDR_T_NONE so the failure is reported at the of_to_plat stage where it belongs. This aligns the driver with the recent fix introduced in the goldfish serial driver by Naveen Kumar Chaudhary. [1] Link: https://lore.kernel.org/u-boot/vgwnt6mnls3lf3zdm6mz5siztzkvppte4ykszbvifjzukvmksf@maaxe5agqpim/ [1] Signed-off-by: Kuan-Wei Chiu

timer: goldfish: Use __raw_readl()

2026-05-22T22:47:54Z

The Goldfish timer registers are native endian, so they act as big-endian on the m68k virt machine. Currently, this driver uses readl(), which works by luck because it's currently broken on m68k. Use __raw_readl() instead to avoid breaking this driver when the endianness of readl() is fixed. Signed-off-by: Kuan-Wei Chiu Tested-by: Daniel Palmer Reviewed-by: Simon Glass Signed-off-by: Daniel Palmer

timer: Add Goldfish timer driver

2026-02-02T20:24:40Z

Add support for the Goldfish timer driver. This driver utilizes the Goldfish RTC hardware to provide a nanosecond-resolution timer. This virtual device is commonly found in QEMU virtual machines (such as the m68k virt machine) and Android emulators. The driver implements the standard U-Boot timer UCLASS interface, exposing a 64-bit monotonically increasing counter with a 1GHz clock rate derived from the RTC registers. Signed-off-by: Kuan-Wei Chiu Tested-by: Daniel Palmer Reviewed-by: Yao Zi Reviewed-by: Simon Glass Reviewed-by: Angelo Dureghello