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2023-07-31lib: utils/regmap: Add simple FDT based syscon regmap driverAnup Patel1-0/+7
Let us add a simple FDT based system regmap driver which follows the device tree bindings already defined in the Linux kernel. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Xiang W <wxjstz@126.com>
2023-07-31lib: utils/regmap: Add simple FDT based regmap frameworkAnup Patel1-0/+6
We add a simple FDT based regmap framework which is built on top of generic regmap library. The phandle of FDT regmap DT node is treated as unique regmap ID. The FDT based regmap drivers will be probed on-demand from fdt_regmap_get_by_phandle() and fdt_regmap_get() called by the regmap client drivers. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Xiang W <wxjstz@126.com>
2023-07-31lib: utils/regmap: Add generic regmap access libraryAnup Patel1-0/+9
We add generic regmap access library which is independent of hardware description format (FDT or ACPI). The OpenSBI platform support or regmap drivers can register regmap instances which can be discovered by different regmap clients based on the unique ID of regmap instances. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Xiang W <wxjstz@126.com>