Re: [PATCH v5 10/23] clk: starfive: Add JHB100 System-2 clock generator driver

[Changhuang Liang]

Hi, Brain

> Hi Changhuang,
> 
> > Add support for JHB100 System-2 clock generator (SYS2CRG).
> >
> > Signed-off-by: Changhuang Liang <changhuang.li...@starfivetech.com>
> >
> > diff --git a/drivers/clk/starfive/Kconfig
> > b/drivers/clk/starfive/Kconfig index 11da8bcc4046..cfaac934a8e0 100644
> > --- a/drivers/clk/starfive/Kconfig
> > +++ b/drivers/clk/starfive/Kconfig
> > @@ -92,3 +92,13 @@ config CLK_STARFIVE_JHB100_SYS1
> >     help
> >       Say yes here to support the system-1 clock controller on the
> >       StarFive JHB100 SoC.
> > +
> > +config CLK_STARFIVE_JHB100_SYS2
> > +   bool "StarFive JHB100 system-2 clock support"
> > +   depends on ARCH_STARFIVE || COMPILE_TEST
> > +   select CLK_STARFIVE_JH71X0
> > +   select RESET_STARFIVE_JHB100 if RESET_CONTROLLER
> > +   default ARCH_STARFIVE
> > +   help
> > +     Say yes here to support the system-2 clock controller on the
> > +     StarFive JHB100 SoC.
> > diff --git a/drivers/clk/starfive/Makefile
> > b/drivers/clk/starfive/Makefile index 0061550e0f7e..29cdef20575e
> > 100644
> > --- a/drivers/clk/starfive/Makefile
> > +++ b/drivers/clk/starfive/Makefile
> > @@ -13,3 +13,4 @@ obj-$(CONFIG_CLK_STARFIVE_JH7110_VOUT)    +=
> clk-starfive-jh7110-vout.o
> >
> >  obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS0)             +=
> clk-starfive-jhb100-sys0.o
> >  obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS1)             +=
> clk-starfive-jhb100-sys1.o
> > +obj-$(CONFIG_CLK_STARFIVE_JHB100_SYS2)             +=
> clk-starfive-jhb100-sys2.o
> > diff --git a/drivers/clk/starfive/clk-starfive-jhb100-sys2.c
> > b/drivers/clk/starfive/clk-starfive-jhb100-sys2.c
> > new file mode 100644
> > index 000000000000..a2c7e8eba9b6
> > --- /dev/null
> > +++ b/drivers/clk/starfive/clk-starfive-jhb100-sys2.c
> > @@ -0,0 +1,129 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * StarFive JHB100 System-2 Clock Driver
> > + *
> > + * Copyright (C) 2024 StarFive Technology Co., Ltd.
> > + *
> > + * Author: Changhuang Liang <changhuang.li...@starfivetech.com>
> > + *
> > + */
> > +
> > +#include <dt-bindings/clock/starfive,jhb100-crg.h>
> > +#include <linux/init.h>
> > +#include <linux/platform_device.h>
> > +
> > +#include "clk-starfive-jh71x0.h"
> > +
> > +#define JHB100_SYS2CLK_NUM_CLKS
>       (JHB100_SYS2CLK_MAIN_ICG_EN_JTAG1 + 1)
> > +
> > +/* external clocks */
> > +#define JHB100_SYS2CLK_OSC
>       (JHB100_SYS2CLK_NUM_CLKS + 0)
> > +#define JHB100_SYS2CLK_PLL1
>       (JHB100_SYS2CLK_NUM_CLKS + 1)
> > +#define JHB100_SYS2CLK_GPU0_NCNOC_INIT
>       (JHB100_SYS2CLK_NUM_CLKS + 2)
> > +#define JHB100_SYS2CLK_GPU1_NCNOC_INIT
>       (JHB100_SYS2CLK_NUM_CLKS + 3)
> > +
> > +static const char * const jhb100_sys2_ext_clk[] = {
> > +   "osc",
> > +   "pll1",
> > +   "gpu0_ncnoc_init",
> > +   "gpu1_ncnoc_init",
> > +};
> > +
> > +static const struct jh71x0_clk_data jhb100_sys2crg_clk_data[] = {
> > +   /* jtag mst*/
> > +   JH71X0__DIV(JHB100_SYS2CLK_JTAGM0_HCLK, "jtagm0_hclk", 6,
> > +               JHB100_SYS2CLK_PLL1),
> > +   JH71X0__DIV(JHB100_SYS2CLK_JTAGM1_HCLK, "jtagm1_hclk", 6,
> > +               JHB100_SYS2CLK_PLL1),
> > +   JH71X0__DIV(JHB100_SYS2CLK_JTAGM0_ATPG, "jtagm0_ATPG", 12,
> > +               JHB100_SYS2CLK_PLL1),
> > +   JH71X0__DIV(JHB100_SYS2CLK_JTAGM1_ATPG, "jtagm1_ATPG", 12,
> > +               JHB100_SYS2CLK_PLL1),
> 
> The ATPG portion of the clock name is uppercase. Can this be lowercase for
> consistency?

Yes, it should be lowercase here. Thanks for pointing that out.

Best Regards,
Changhuang