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2022-03-15clk: sifive: Move all stuff into SoCs header files from C filesZong Li1-1/+1
Improve PRCI driver to reduce the complexity, we remove the SoCs C files by putting all stuff in each SoCs header files, and include these SoCs-specific header files in core of PRCI. It can also avoid the W=1 kernel build warnings about variable defined but not used [-Wunused-const-variable=], like commit 487dc7bb6a0c ("clk: sifive: fu540-prci: Declare static const variable 'prci_clk_fu540' where it's used") does. Signed-off-by: Zong Li <[email protected]> Suggested-by: Lee Jones <[email protected]> Reviewed-by: Lee Jones <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Link: https://lore.kernel.org/r/a3c7ec5c46c1d8be455d1c347db4855bb56cec53.1646388139.git.zong.li@sifive.com Signed-off-by: Stephen Boyd <[email protected]>
2020-12-16clk: sifive: Add a driver for the SiFive FU740 PRCI IP blockZong Li1-1/+1
Add driver code for the SiFive FU740 PRCI IP block. This IP block handles reset and clock control for the SiFive FU740 device and implements SoC-level clock tree controls and dividers. The link of unmatched as follow, and the U740-C000 manual would be present in the same page as soon. https://www.sifive.com/boards/hifive-unmatched This driver contains bug fixes and contributions from Henry Styles <[email protected]> Erik Danie <[email protected]> Pragnesh Patel <[email protected]> Signed-off-by: Zong Li <[email protected]> Reviewed-by: Pragnesh Patel <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Cc: Henry Styles <[email protected]> Cc: Erik Danie <[email protected]> Cc: Pragnesh Patel <[email protected]> Link: https://lore.kernel.org/r/[email protected] [[email protected]: Include header to silence sparse] Signed-off-by: Stephen Boyd <[email protected]>
2020-12-16clk: sifive: Use common name for prci configurationZong Li1-1/+1
Use generic name CLK_SIFIVE_PRCI instead of CLK_SIFIVE_FU540_PRCI. This patch is prepared for fu740 support. Signed-off-by: Zong Li <[email protected]> Reviewed-by: Palmer Dabbelt <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Reviewed-by: Pragnesh Patel <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Stephen Boyd <[email protected]>
2020-12-16clk: sifive: Extract prci core to common baseZong Li1-1/+1
Extract common core of prci driver to an independent file, it could allow other chips to reuse it. Separate SoCs-dependent code 'fu540' from prci core, then we can easily add 'fu740' later. Almost these changes are code movement. The different is adding the private data for each SoC use, so it needs to get match data in probe callback function, then use the data for initialization. Signed-off-by: Zong Li <[email protected]> Reviewed-by: Pragnesh Patel <[email protected]> Acked-by: Palmer Dabbelt <[email protected]> Link: https://lore.kernel.org/r/[email protected] [[email protected]: Include header to silence sparse] Signed-off-by: Stephen Boyd <[email protected]>
2019-05-21treewide: Add SPDX license identifier - Makefile/KconfigThomas Gleixner1-0/+1
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 <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-05-03clk: sifive: add a driver for the SiFive FU540 PRCI IP blockPaul Walmsley1-0/+1
Add driver code for the SiFive FU540 PRCI IP block. This IP block handles reset and clock control for the SiFive FU540 device and implements SoC-level clock tree controls and dividers. Based on code written by Wesley Terpstra <[email protected]>: https://github.com/riscv/riscv-linux/commit/999529edf517ed75b56659d456d221b2ee56bb60 Boot and PLL rate change were tested on a SiFive HiFive Unleashed board. This version includes several changes requested by Stephen Boyd <[email protected]>. Signed-off-by: Paul Walmsley <[email protected]> Signed-off-by: Paul Walmsley <[email protected]> Cc: Michael Turquette <[email protected]> Cc: Stephen Boyd <[email protected]> Cc: Albert Ou <[email protected]> Cc: Wesley W. Terpstra <[email protected]> Cc: Palmer Dabbelt <[email protected]> Cc: Megan Wachs <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] [[email protected]: Fix some const and ARRAY_SIZE() issues, make makefile only descend if CLK_SIFIVE=y] Signed-off-by: Stephen Boyd <[email protected]>
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