| From: |
| Jingbao Qiu <qiujingbao.dlmu-AT-gmail.com> |
| To: |
| u.kleine-koenig-AT-pengutronix.de, robh+dt-AT-kernel.org, krzysztof.kozlowski+dt-AT-linaro.org, conor+dt-AT-kernel.org, paul.walmsley-AT-sifive.com, palmer-AT-dabbelt.com, aou-AT-eecs.berkeley.edu |
| Subject: |
| [PATCH v4 0/2] riscv: pwm: sophgo: add pwm support for CV1800 |
| Date: |
| Mon, 04 Mar 2024 16:59:31 +0800 |
| Message-ID: |
| <20240304085933.1246964-1-qiujingbao.dlmu@gmail.com> |
| Cc: |
| linux-pwm-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, linux-riscv-AT-lists.infradead.org, dlan-AT-gentoo.org, inochiama-AT-outlook.com, Jingbao Qiu <qiujingbao.dlmu-AT-gmail.com> |
| Archive-link: |
| Article |
The Sophgo CV1800 chip provides a set of four independent
PWM channel outputs.
This series adds PWM controller support for Sophgo cv1800.
Changes since v3:
- use macro instead of npwm number
- add support for polarity feature
- add Output-Enable/OE check
v3: https://lore.kernel.org/all/20240223082014.109385-1-qiuji...
Changes since v2:
- use 0x08 instead of macro
- split if statements based on conditions
- in order to round up, first calculate the
number of high-level cycles, then subtract
it from the PERIOD to obtain the number of HLPERIOD
- use new pwmchip_alloc() API instead of old style
v2: https://lore.kernel.org/all/20240212121729.1086718-1-qiuj...
Changes since v1:
- drop full stop from subject
- re-order maintainers and description
- pass checkpatch.pl --strict
- fix naming errors
- add "Limitations" section
- use a driver specific prefix for all defines
- using bool instead u32 in cv1800_pwm_enable
- check and set state->polarity
- use mul_u64_u64_div_u64
- use clk_rate_exclusive_get(), balance with clk_rate_exclusive_put()
- using macro definitions instead of shift operations
- remove shift operation on 0
- use priv replace cv_pwm
- hardcode npwm
- set atomic to true
- remove MODULE_ALIAS
v1: https://lore.kernel.org/all/20240207055856.672184-1-qiuji...
Jingbao Qiu (2):
dt-bindings: pwm: sophgo: add pwm for Sophgo CV1800 series SoC
pwm: sophgo: add pwm support for Sophgo CV1800 SoC
.../bindings/pwm/sophgo,cv1800-pwm.yaml | 45 +++
drivers/pwm/Kconfig | 10 +
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-cv1800.c | 314 ++++++++++++++++++
4 files changed, 370 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pwm/sophgo,cv1800-pwm.yaml
create mode 100644 drivers/pwm/pwm-cv1800.c
base-commit: 801de0882d8a95aa1b1fe67df1696e037d785656
--
2.25.1
