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clk-core is a confusingly generic name, since it is only used by a
single platform and it uses very similar naming to the "soft" IP cores
for use in FPGA fabric (CoreClock or similar is what that would be
called, although nothing like that exists right now) that the FPGA
business unit produces. Rename it to clk-pic32, matching the prefix
used by most functions in the driver. As far as I can tell, impact
on whatever users may (or may not...) exist for the platform is minimal
as it's built-in only and the functions are called directly from
clk-pic32mzda.c
Reviewed-by: Brian Masney <bmasney@redhat.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Add a driver to support the PLLs in PolarFire SoC's Clock Conditioning
Circuitry, an instance of which is located in each ordinal corner of
the FPGA. Only get_rate() is supported as these clocks are intended to
be statically configured by the FPGA design. Currently, the DLLs are
not supported by this driver. For more information on the hardware, see
"PolarFire SoC FPGA Clocking Resources" in the link below.
Link: https://onlinedocs.microchip.com/pr/GUID-8F0CC4C0-0317-4262-89CA-CE7773ED1931-en-US-1/index.html
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20220908143651.1252601-5-conor.dooley@microchip.com
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Add support for clock configuration on Microchip PolarFire SoC
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Co-developed-by: Padmarao Begari <padmarao.begari@microchip.com>
Signed-off-by: Padmarao Begari <padmarao.begari@microchip.com>
Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com>
Co-developed-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20220222121143.3316880-2-conor.dooley@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
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Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This clock driver implements PIC32 specific clock-tree. clock-tree
entities can only be configured through device-tree file (OF).
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-clk@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13247/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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