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These drivers were merged on an experimental basis without the RPMI
specification being frozen. As a result, they may not be compatible with
the frozen version of the RPMI protocol. Additionally, their devicetree
bindings have not been reviewed and are subject to change. Warn the user
that these drivers make no compatibility guarantees, and that their
behavior and devicetree bindings may change incompatibly in future
versions of OpenSBI.
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
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Improve 64-bit operation under rv32 and remove db_val_u32_hi
in rpmi_cppc_fc_db_trigger().
Signed-off-by: Xiang W <wxjstz@126.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
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The following error is observed when compiling fdt_cppc_rpmi
driver using LLVM:
lib/utils/cppc/fdt_cppc_rpmi.c:87:3: error: label followed by a declaration is a C23 extension [-Werror,-Wc23-extensions]
87 | u64 db_val_u64 = 0;
To fix the above issue, move the variable declaration at the
start of function.
Fixes: 591a98bdd549 ("lib: utils/cppc: Add RPMI CPPC driver")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Samuel Holland <samuel.holland@sifive.com>
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Add RPMI based driver for CPPC register read, write and probe.
Signed-off-by: Subrahmanya Lingappa <slingappa@ventanamicro.com>
Co-developed-by: Rahul Pathak <rpathak@ventanamicro.com>
Signed-off-by: Rahul Pathak <rpathak@ventanamicro.com>
Co-developed-by: Sunil V L <sunilvl@ventanamicro.com>
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
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The generic platform can have multiple CPPC drivers so add a simple
FDT based CPPC driver framework.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
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