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Add support for WCH CH56x series SoC #64472

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Add support for WCH CH56x series SoC #64472

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xingrz
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@xingrz xingrz commented Oct 27, 2023 •
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QingKe is a series of RISC-V cores developed by WCH, consisting with V2A, V3A and V4B/C/F series of MCUs.

CH569/CH565 are 2 of the members of the QingKe V3A series. This PR brings initial support for these two SoCs to Zephyr.

In summary, this PR includes:

  • An interrupt controller for all QingKe MCUs.
  • A systick driver for the QingKe V3 series.
  • Clock controller and GPIO, UART driver specifically for the CH56x MCUs.
  • Configurations for the official CH565W-EVT and CH569W-EVT evaluation boards

Support for other series members will be submit in future PRs.

References:

TODOs

@xingrz xingrz force-pushed the wch/pr/ch56x-bringup branch 4 times, most recently from a10ccca to 80ce4f7 Compare October 27, 2023 06:45
@xingrz xingrz marked this pull request as ready for review October 27, 2023 07:31
nordicjm
nordicjm requested changes Feb 26, 2024
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Needs to be migrated to hwmv2

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xingrz commented Feb 26, 2024

Needs to be migrated to hwmv2

Yes I'm planning to do that. I'm still waiting for the custom interrupt controller before this PR can go ahead.

@xingrz xingrz force-pushed the wch/pr/ch56x-bringup branch 2 times, most recently from ee192a2 to 1901934 Compare April 11, 2024 03:08
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Colt-Ma commented May 19, 2024

@xingrz @bjarki-trackunit
Is this still progressing? Qingke series microcontrollers will definitely be used in large quantities because of their low price, so I think it is necessary to adapt this series of microcontrollers to zephyr.

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Colt-Ma commented May 19, 2024

@xingrz @bjarki-trackunit
Is this still progressing? Qingke series microcontrollers will definitely be used in large quantities because of their low price, so I think it is necessary to adapt this series of microcontrollers to zephyr.

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xingrz commented May 19, 2024

@xingrz @bjarki-trackunit Is this still progressing? Qingke series microcontrollers will definitely be used in large quantities because of their low price, so I think it is necessary to adapt this series of microcontrollers to zephyr.

Yes, but I'm still waiting for the support for custom interrupt controller #63214 (comment)

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xingrz commented May 20, 2024

@xingrz I will output the uart0 of ch592f as the console, with a baud rate of 115200. However, the actual baud rate seen on the oscilloscope is 114khz. I am not sure where the problem is and how to modify it. I look forward to your prompt. Thank you!

Maybe you need to revert the latest [WIP] TICKLESS] commit from that branch.

We're off-topic. You can contact me from the official Discord.

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xingrz added 14 commits May 23, 2024 14:29
@xingrz
dts: vendor-prefixes: Add WCH
4798e34 
* Website: https://wch-ic.com/

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
[DNM] arch: riscv: Add support for custom interrupt controller
6fcbb06 
NOTE: Duplicated with an existing PR. Leaving this commit here just as
a placeholder. Will be rebased soon after that existing PR get merged.

==========================================================================

In certain cases, platforms may have their own implemented interrupt
controllers (e.g., the PFIC on WCH MCUs) that require the ability to
implement the irq_enable/disable functions at the SoC level.

Similar support already exists for ARM and ARM64. This commit adds support
for RISC-V as well.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
dts/soc: riscv: ch32v: Add WCH QingKe V3 series
15344fc 
QingKe V3 is an RV32IMAC core developed by WCH

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
dts/soc: riscv: ch32v: Add WCH CH569/5 SoC
6d4c56d 
Based on QingKe V3A core, CH569/5 are members of the CH56x series.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
drivers: intc: Implement interrupt controller for WCH QingKe CPUs
2ddd3f3 
PFIC (Programmable Fast Interrupt Controller) is the interrupt controller
implmentation in WCH QingKe series RISC-V MCUs.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
drivers: timer: Add systick driver for WCH QingKe V3 CPUs
30181f4 
This driver is shared across QingKe V3A series, including CH32V103,
CH569/5 and CH573/1.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
dts/soc: riscv: ch32v: Add syscon node for WCH CH56x
6f6421b 
This commit describes the system control block of the CH56x in DTS. This
block will be utilized in future drivers for functions such as pin
remapping, clock control, and interrupt management.

Additionally, macros has been added to facilitate easy access to the block.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
drivers: clock: Implement system clock mux controller for CH56x
cd62d5d 
The CH56x can be configured to run on a 30MHz external oscillator or a
480MHz PLL generated by the USB PHY.

This commit introduces a clock controller that can automatically select
one of the two available clock sources and determine the appropriate
divisor based on the given frequency.

The `CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC` value is also updated with the
selected frequency.

Signed-off-by: Chen Xingyu <hi@xingrz.me>

# Conflicts:
#	drivers/clock_control/Kconfig
#	soc/riscv/riscv-privileged/wch_ch32v/Kconfig.defconfig.ch56x
@xingrz
drivers: gpio: Add GPIO driver for WCH CH56x
0fac7ee 
This commit implements a GPIO driver for CH56x series.

The 2 instances of GPIO share a same IRQ line on this chip. So the config
`SHARED_IRQ` is selected as well.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
drivers: pinctrl: Implement pin controller for WCH CH5xx series
167d39e 
This commit introduces a pinctrl driver for the CH5xx series.

The limitations of pin multiplexing of WCH CH5xx series are described
in the binding configuration.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
drivers: serial: Implement UART driver for WCH CH5xx series
06138fd 
This commit introduces UART driver for CH5xx series, supporting both polling
and interrupt-driven mode.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
scripts: runners: Add wrapper for WCHISPTool
1b3aac1 
`WCHISPTool_CMD` is the commandline version of WCHISPTool, which is a USB
flashing tool for WCH series MCUs.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
boards: riscv: Bring up WCH CH56(5/9)W-EVT
06dca25 
CH565W-EVT and CH569W-EVT are boards by WCH for the evaluation of
CH565W and CH569W chips.

Signed-off-by: Chen Xingyu <hi@xingrz.me>
@xingrz
MAINTAINERS: Add WCH platform and assign myself as maintainer
89abf9b 
* Add `WCH Platforms` section
* Add `xingrz` to maintainers of `WCH Platform`

Signed-off-by: Chen Xingyu <hi@xingrz.me>
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area: Architectures area: Clock Control area: Devicetree Binding PR modifies or adds a Device Tree binding area: GPIO area: Interrupt Controller area: Process area: RISCV RISCV Architecture (32-bit & 64-bit) area: Timer Timer area: West West utility Stale
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@xingrz @nandojve @bjarki-andreasen @Colt-Ma @carlocaione @soburi @fkokosinski @nordicjm @amr-sc @zephyrbot