opensbi.git/lib/utils/reset/fdt_reset.c, branch v1.6

lib: utils/reset: Use fdt_driver for initialization

2024-11-28T12:18:17Z

The reset driver subsystem does not need any extra data, so it can use `struct fdt_driver` directly. The generic fdt_reset_init() performs a best-effort initialization of all matching DT nodes. Platform-specific logic expects exactly one DT node to match a single driver. This is accomplished by using fdt_driver_init_one() with a local list containing that one driver. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

treewide: Make carray arrays const and NULL-terminated

2024-11-28T11:39:17Z

This allows the compiler to generate significantly better code, because it does not have to maintain either the loop counter or loop limit. Plus there are half as many symbols to relocate. This also simplifies passing carray arrays to helper functions. Signed-off-by: Samuel Holland Reviewed-by: Anup Patel

lib: utils/reset: Pass the FDT to fdt_reset_init()

2024-08-24T07:32:58Z

Indicate that this function does not modify the FDT blob, and deduplicate the call to fdt_get_address(). Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: utils/reset: Constify FDT pointers in parsing functions

2024-08-24T07:32:42Z

Indicate that none of these functions modify the devicetree by constifying the parameter type. Signed-off-by: Samuel Holland Reviewed-by: Andrew Jones Reviewed-by: Anup Patel

lib: utils/reset: Try initializing all reset devices in dt

2024-06-13T16:18:03Z

In DT, multiple reset devices may use the same driver, and they may have different priorities. If rc is returned after the first initialization, the highest priority device may be lost. Fixes: a73ff043e991 (lib: utils/reset: Fix fdt_reset to search for more dt nodes) Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils/reset: Fix fdt_reset to search for more dt nodes

2024-06-13T13:19:51Z

If there are multiple dt nodes, the previous code only tries to match the first one, which may lose initialization. Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils/reset: Skip initialize reset when dt is not enabled

2024-06-13T13:10:38Z

When the dt node has a status property and the value is not ok or okay, skip initializing reset. Signed-off-by: Xiang W Reviewed-by: Anup Patel

lib: utils/reset: Generate FDT reset driver list at compile-time

2022-05-13T03:56:06Z

Instead of having FDT reset driver list hard-coded in the C source, we generate it using carray.sh at compile-time. Signed-off-by: Anup Patel Reviewed-by: Atish Patra

lib: utils/reset: separate driver init func

2021-11-12T04:46:23Z

Move driver init code to separate function, so it can be reused elsewhere. Tested-by: Heinrich Schuchardt Reviewed-by: Alexandre Ghiti Tested-by: Alexandre Ghiti Signed-off-by: Nikita Shubin

lib: sbi: error handling in fdt_reset_init()

2021-11-08T05:20:48Z

The initialization of a reset driver may fail for various reasons, like a PMIC based reset driver not finding the required I2C driver. The return code of the init routine may take other error values than -ENODEV. If the initialization of a reset driver fails, this should not lead to the board hanging. It is enough that the reset driver does not call sbi_system_reset_add_device() to avoid invoking the driver for a device that could not be initialized. Change the return type of fdt_reset_init() to void. Print a message if an error occurs. Signed-off-by: Heinrich Schuchardt Reviewed-by: Dong Du Reviewed-by: Anup Patel