linux-kernel - Re: [PATCH v5 0/5] add support for T7 family clock controller

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Message-ID: <e1e3182f-8c6d-4b76-9659-5a1cd3a19067@amlogic.com>
Date: Wed, 26 Nov 2025 17:09:25 +0800
From: Jian Hu <jian.hu@...ogic.com>
To: Jerome Brunet <jbrunet@...libre.com>
Cc: Xianwei Zhao <xianwei.zhao@...ogic.com>, Chuan Liu
 <chuan.liu@...ogic.com>, Neil Armstrong <neil.armstrong@...aro.org>,
 Kevin Hilman <khilman@...libre.com>, Stephen Boyd <sboyd@...nel.org>,
 Michael Turquette <mturquette@...libre.com>,
 Dmitry Rokosov <ddrokosov@...rdevices.ru>, robh+dt <robh+dt@...nel.org>,
 Rob Herring <robh@...nel.org>, devicetree <devicetree@...r.kernel.org>,
 linux-clk <linux-clk@...r.kernel.org>,
 linux-amlogic <linux-amlogic@...ts.infradead.org>,
 linux-kernel <linux-kernel@...r.kernel.org>,
 linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v5 0/5] add support for T7 family clock controller


On 11/24/2025 5:46 PM, Jerome Brunet wrote:
> [ EXTERNAL EMAIL ]
>
> On Fri 21 Nov 2025 at 18:59, Jian Hu <jian.hu@...ogic.com> wrote:
>
>> It introduces three clock controllers:
>> - SCMI clock controller: these clocks are managed by the SCP and handled through SCMI.
>> - PLL clock controller.
>> - peripheral clock controller.
>>
>> Changes v5 since v4 at [4]:
>> - rename rtc and cec dualdiv clocks
>> - rename dsp clocks
>> - rename anakin clocks
>> - rename fdiv2_divn to 25m and fix its parent
>> - add flag for T7_COMP_GATE
>> - use T7_COMP_SEL/DIV/GATE to define glitch clocks
>> - add CLK_SET_RATE_NO_REPARENT for t7_eth_rmii_sel and rtc
>> - move module_platform_driver after clock driver
> Looks good to me, just a few minor comments.
>
> It is too late of this cycle. Please check the comments and re-send on
> the next -rc1


Okay,  I will address the comments and send v6 patch for the next -rc1.

Thanks for your review!

>
>> Changes v4 since v3 at [3]:
>> - drop amlogic_t7_pll_probe, use meson_clkc_mmio_probe instead
>> - add CLK_DIVIDER_MAX_AT_ZERO for pcie_pll_od clk
>> - add frac for hifi_dco_pll_dco
>> - add l_detect for mclk_pll_dco
>> - drop v3 5/6 patch, and use MESON_PCLK
>> - drop SPI_PWM_CLK_XX macro and use MESON_COMP_XX
>> - drop the register's prefix
>>
>> Changes v3 since v2 at [2]:
>> - update T7 PLL YAML
>> - add 't7_' prefix for t7 clock name and variable in t7-pll.c and t7-peripherals.c
>> - correct v1 patch link
>> - add new macro MESON_PCLK_V2
>> - update the driver,header,yaml file license
>>
>> Changes v2 since v1 at [1]:
>> - add CLK_MESON import
>> - add const for clkc_regmap_config in PLL driver
>> - fix eth_rmii_sel parent
>> - update T7 PLL YAML file
>>
>> [1]: https://lore.kernel.org/all/20241231060047.2298871-1-jian.hu@amlogic.com
>> [2]: https://lore.kernel.org/all/20250108094025.2664201-1-jian.hu@amlogic.com
>> [3]: https://lore.kernel.org/all/20250509074825.1933254-1-jian.hu@amlogic.com
>> [4]: https://lore.kernel.org/all/20251030094345.2571222-1-jian.hu@amlogic.com
>> Jian Hu (5):
>>    dt-bindings: clock: add Amlogic T7 PLL clock controller
>>    dt-bindings: clock: add Amlogic T7 SCMI clock controller
>>    dt-bindings: clock: add Amlogic T7 peripherals clock controller
>>    clk: meson: t7: add support for the T7 SoC PLL clock
>>    clk: meson: t7: add t7 clock peripherals controller driver
>>
>>   .../clock/amlogic,t7-peripherals-clkc.yaml    |  116 ++
>>   .../bindings/clock/amlogic,t7-pll-clkc.yaml   |  114 ++
>>   drivers/clk/meson/Kconfig                     |   27 +
>>   drivers/clk/meson/Makefile                    |    2 +
>>   drivers/clk/meson/t7-peripherals.c            | 1266 +++++++++++++++++
>>   drivers/clk/meson/t7-pll.c                    | 1068 ++++++++++++++
>>   .../clock/amlogic,t7-peripherals-clkc.h       |  228 +++
>>   .../dt-bindings/clock/amlogic,t7-pll-clkc.h   |   56 +
>>   include/dt-bindings/clock/amlogic,t7-scmi.h   |   47 +
>>   9 files changed, 2924 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/clock/amlogic,t7-peripherals-clkc.yaml
>>   create mode 100644 Documentation/devicetree/bindings/clock/amlogic,t7-pll-clkc.yaml
>>   create mode 100644 drivers/clk/meson/t7-peripherals.c
>>   create mode 100644 drivers/clk/meson/t7-pll.c
>>   create mode 100644 include/dt-bindings/clock/amlogic,t7-peripherals-clkc.h
>>   create mode 100644 include/dt-bindings/clock/amlogic,t7-pll-clkc.h
>>   create mode 100644 include/dt-bindings/clock/amlogic,t7-scmi.h
> --
> Jerome