[PATCH v16 0/5] riscv: sophgo: add clock support for sg2042
Chen Wang
unicorn_wang at outlook.com
Thu Jun 13 02:34:03 PDT 2024
ping ~~~
On 2024/6/6 16:36, Chen Wang wrote:
> From: Chen Wang <unicorn_wang at outlook.com>
>
> This series adds clock controller support for sophgo sg2042.
>
> Thanks,
> Chen
>
> ---
>
> Changes in v16:
>
> The patch series is based on v6.10-rc1.
>
> Improved the dirvier code as per comments from Emil Renner Berthing.
> - Split driver source file into three and change from built-in to module.
> - Directly use status/enable pll register, no need to store them.
> - Use FIELD_PREP/FIELD_GET to simplify the code.
> - Some misc code improvements, such as for macro and local variables.
>
> Changes in v15:
>
> The patch series is based on v6.9-rc5. You can simply review or test the
> patches at the link [16].
>
> Improved the dirvier code as per 3rd review comments from Stephen Boyd.
> - Converted all parents described by strings to use clk_parent_data or
> clk_hw directly.
> - Just use struct clk_init_data::parent_hws when only have a clk_hw.
> - Removed extra cleanup when use devm.
> - Some misc code improvements.
>
> Changes in v14:
>
> The patch series is based on v6.9-rc1. You can simply review or test the
> patches at the link [15].
>
> Improved the dirvier code as per 2nd review comments from Stephen Boyd.
> - Inline the header file into source file.
> - Use devm_xxx functions for pll/div/gate registeration.
> - Use clk_parent_data for mux clocks initialization.
> - Use u32 for registers readl/writel.
> - Use devm_platform_ioremap_resource instead of devm_of_iomap.
> - Cleanup some dead code and add definitions for some magic numbers.
> - Add include files missed.
> - Use kernel-doc to improve comments for some structure and functions.
> - Other misc code cleanup work as per input from reviewers.
>
> Changes in v13:
>
> The patch series is based on v6.9-rc1. You can simply review or test the
> patches at the link [14].
>
> Just added a minor fix for clk driver which was missed in v12.
>
> Changes in v12:
>
> The patch series is based on v6.9-rc1. You can simply review or test the
> patches at the link [13].
>
> Improved the dirvier code as per review comments from Stephen Boyd.
> - Remove default y for CLK_SOPHGO_SG2042.
> - Optimize sg2042_pll_get_postdiv_1_2, move postdiv1_2 to the function.
> scope and add more explaniation.
> - Optimize sg2042_get_pll_ctl_setting.
> - Switch to platform driver.
> - Use clk_hw for initialization of struct clks.
> - Don't use ignore_unused when using critical.
> - Other code cleanup as per input form the reviewers.
>
> Changes in v11:
>
> The patch series is based on v6.8-rc5. You can simply review or test the
> patches at the link [12].
>
> Quick fixed some dt_binding_check errors reported by Rob.
>
> Changes in v10:
>
> The patch series is based on v6.8-rc4. You can simply review or test the
> patches at the link [11].
>
> Add input clocks for rpgate & clkgen.
>
> Changes in v9:
> The patch series is based on v6.8-rc2. You can simply review or test the
> patches at the link [10].
>
> From this version, drop the system-controller node due to there is no actual
> device corresponding to it in IC design. SYS_CTRL is just a registers segment
> defined on TRM for misc functions. Now three clock-controllers are defined for
> SG2042, the control registers of the three clock-controllers are scattered in
> different memory address spaces:
> - the first one is for pll clocks;
> - the second one is for gate clocks for RP subsystem;
> - the third one is for div/mux, and gate clocks working for other subsystem
> than RP subsystem.
>
> Changes in v8:
> The patch series is based on v6.7. You can simply review or test the
> patches at the link [9].
>
> In this version, the main change is to split one clock provider into two.
> Strictly follow the hardware instructions, in the memoymap, the control
> registers of some clocks are defined in the SYS_CTRL segment, and the
> control registers of other clocks are defined in the CLOCK segment.
> Therefore, the new design defines two clock controllers, one as a child
> node of the system control and the other as an independent clock controller
> node.
>
> This modification involves a major modification to the binding files, so
> the reviewed-by tags has been deleted.
>
> Changes in v7:
> The patch series is based on v6.7. You can simply review or test the
> patches at the link [8].
> - fixed initval issue.
> - fixed pll clk crash issue.
> - fixed warning reported by <lkp at intel.com>
> - code optimization as per review comments.
> - code cleanup and style improvements as per review comments and checkpatch
> with "--strict"
>
> Changes in v6:
> The patch series is based on v6.7-rc1. You can simply review or test the
> patches at the link [7].
> - fixed some warnings/errors reported by kernel test robot <lkp at intel.com>.
>
> Changes in v5:
> The patch series is based on v6.7-rc1. You can simply review or test the
> patches at the link [6].
> - dt-bindings: improved yaml, such as:
> - add vendor prefix for system-ctrl property for clock generator.
> - Add explanation for system-ctrl property.
> - move sophgo,sg2042-clkgen.yaml to directly under clock folder.
> - fixed bugs for driver Makefile/Kconfig
> - continue cleaning-up debug print for driver code.
>
> Changes in v4:
> The patch series is based on v6.7-rc1. You can simply review or test the
> patches at the link [5].
> - dt-bindings: fixed a dt_binding_check error.
>
> Changes in v3:
> The patch series is based on v6.7-rc1. You can simply review or test the
> patches at the link [3].
> - DTS: don't use syscon but define sg2042 specific system control node. More
> background info can read [4].
> - Updating minor issues in dt-bindings as per input from reviews.
>
> Changes in v2:
> The patch series is based on v6.7-rc1. You can simply review or test the
> patches at the link [2].
> - Squashed the patch adding clock definitions with the patch adding the
> binding for the clock controller.
> - Updating dt-binding for syscon, remove oneOf for property compatible;
> define clock controller as child of syscon.
> - DTS changes: merge sg2042-clock.dtsi into sg2042.dtsi; move clock-frequency
> property of osc to board devicethree due to the oscillator is outside the
> SoC.
> - Fixed some bugs in driver code during testing, including removing warnings
> for rv32_defconfig.
> - Updated MAINTAINERS info.
>
> Changes in v1:
> The patch series is based on v6.7-rc1. You can simply review or test the
> patches at the link [1].
>
> Link: https://lore.kernel.org/linux-riscv/cover.1699879741.git.unicorn_wang@outlook.com/ [1]
> Link: https://lore.kernel.org/linux-riscv/cover.1701044106.git.unicorn_wang@outlook.com/ [2]
> Link: https://lore.kernel.org/linux-riscv/cover.1701691923.git.unicorn_wang@outlook.com/ [3]
> Link: https://lore.kernel.org/linux-riscv/MA0P287MB03329AE180378E1A2E034374FE82A@MA0P287MB0332.INDP287.PROD.OUTLOOK.COM/ [4]
> Link: https://lore.kernel.org/linux-riscv/cover.1701734442.git.unicorn_wang@outlook.com/ [5]
> Link: https://lore.kernel.org/linux-riscv/cover.1701938395.git.unicorn_wang@outlook.com/ [6]
> Link: https://lore.kernel.org/linux-riscv/cover.1701997033.git.unicorn_wang@outlook.com/ [7]
> Link: https://lore.kernel.org/linux-riscv/cover.1704694903.git.unicorn_wang@outlook.com/ [8]
> Link: https://lore.kernel.org/linux-riscv/cover.1705388518.git.unicorn_wang@outlook.com/ [9]
> Link: https://lore.kernel.org/linux-riscv/cover.1706854074.git.unicorn_wang@outlook.com/ [10]
> Link: https://lore.kernel.org/linux-riscv/cover.1708223519.git.unicorn_wang@outlook.com/ [11]
> Link: https://lore.kernel.org/linux-riscv/cover.1708397315.git.unicorn_wang@outlook.com/ [12]
> Link: https://lore.kernel.org/linux-riscv/cover.1711527932.git.unicorn_wang@outlook.com/ [13]
> Link: https://lore.kernel.org/linux-riscv/cover.1711692169.git.unicorn_wang@outlook.com/ [14]
> Link: https://lore.kernel.org/linux-riscv/cover.1713164546.git.unicorn_wang@outlook.com/ [15]
> Link: https://lore.kernel.org/linux-riscv/cover.1714101547.git.unicorn_wang@outlook.com/ [16]
>
> ---
>
> Chen Wang (5):
> dt-bindings: clock: sophgo: add pll clocks for SG2042
> dt-bindings: clock: sophgo: add RP gate clocks for SG2042
> dt-bindings: clock: sophgo: add clkgen for SG2042
> clk: sophgo: Add SG2042 clock driver
> riscv: dts: add clock generator for Sophgo SG2042 SoC
>
> .../bindings/clock/sophgo,sg2042-clkgen.yaml | 61 +
> .../bindings/clock/sophgo,sg2042-pll.yaml | 53 +
> .../bindings/clock/sophgo,sg2042-rpgate.yaml | 49 +
> .../boot/dts/sophgo/sg2042-milkv-pioneer.dts | 12 +
> arch/riscv/boot/dts/sophgo/sg2042.dtsi | 55 +-
> drivers/clk/sophgo/Kconfig | 28 +
> drivers/clk/sophgo/Makefile | 4 +
> drivers/clk/sophgo/clk-sg2042-clkgen.c | 1152 +++++++++++++++++
> drivers/clk/sophgo/clk-sg2042-pll.c | 570 ++++++++
> drivers/clk/sophgo/clk-sg2042-rpgate.c | 291 +++++
> drivers/clk/sophgo/clk-sg2042.h | 18 +
> .../dt-bindings/clock/sophgo,sg2042-clkgen.h | 111 ++
> include/dt-bindings/clock/sophgo,sg2042-pll.h | 14 +
> .../dt-bindings/clock/sophgo,sg2042-rpgate.h | 58 +
> 14 files changed, 2475 insertions(+), 1 deletion(-)
> create mode 100644 Documentation/devicetree/bindings/clock/sophgo,sg2042-clkgen.yaml
> create mode 100644 Documentation/devicetree/bindings/clock/sophgo,sg2042-pll.yaml
> create mode 100644 Documentation/devicetree/bindings/clock/sophgo,sg2042-rpgate.yaml
> create mode 100644 drivers/clk/sophgo/clk-sg2042-clkgen.c
> create mode 100644 drivers/clk/sophgo/clk-sg2042-pll.c
> create mode 100644 drivers/clk/sophgo/clk-sg2042-rpgate.c
> create mode 100644 drivers/clk/sophgo/clk-sg2042.h
> create mode 100644 include/dt-bindings/clock/sophgo,sg2042-clkgen.h
> create mode 100644 include/dt-bindings/clock/sophgo,sg2042-pll.h
> create mode 100644 include/dt-bindings/clock/sophgo,sg2042-rpgate.h
>
>
> base-commit: 1613e604df0cd359cf2a7fbd9be7a0bcfacfabd0
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