linux-kernel - Re: [PATCH 10/17] clk: renesas: r9a08g045: Add support for power domains

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Date: Fri, 16 Feb 2024 15:10:04 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Claudiu <claudiu.beznea@...on.dev>
Cc: mturquette@...libre.com, sboyd@...nel.org, robh@...nel.org, 
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, magnus.damm@...il.com, 
	paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu, 
	linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-riscv@...ts.infradead.org, 
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH 10/17] clk: renesas: r9a08g045: Add support for power domains

Hi Claudiu,

On Thu, Feb 8, 2024 at 1:44 PM Claudiu <claudiu.beznea@...on.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>
> Instantiate power domains for the currently enabled IPs of R9A08G045 SoC.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Thanks for your patch!

> --- a/drivers/clk/renesas/r9a08g045-cpg.c
> +++ b/drivers/clk/renesas/r9a08g045-cpg.c
> @@ -240,6 +240,28 @@ static const unsigned int r9a08g045_crit_mod_clks[] __initconst = {
>         MOD_CLK_BASE + R9A08G045_DMAC_ACLK,
>  };
>
> +static const struct rzg2l_cpg_pm_domain_init_data r9a08g045_pm_domains[] = {
> +       DEF_PD("always-on",     R9A08G045_PD_ALWAYS_ON, 0, 0,
> +                               RZG2L_PD_F_PARENT | RZG2L_PD_F_ALWAYS_ON),
> +       DEF_PD("gic",           R9A08G045_PD_GIC, MSTOP(ACPU, BIT(3)), PWRDN(IP1, 2),

My docs document only bit 0 of the CPG_BUS_ACPU_MSTOP register.

> +                               RZG2L_PD_F_ALWAYS_ON),
> +       DEF_PD("ia55",          R9A08G045_PD_IA55, MSTOP(PERI_CPU, BIT(13)), PWRDN(IP1, 3),
> +                               RZG2L_PD_F_ALWAYS_ON),
> +       DEF_PD("dmac",          R9A08G045_PD_DMAC, MSTOP(REG1, GENMASK(3, 0)), 0,
> +                               RZG2L_PD_F_ALWAYS_ON),
> +       DEF_PD("ddr",           R9A08G045_PD_DDR, MSTOP(PERI_DDR, BIT(1)), PWRDN(IP2, 0),

Only BIT(1)? My docs suggest GENMASK(1, 0).

> +                               RZG2L_PD_F_ALWAYS_ON),
> +       DEF_PD("tzcddr",        R9A08G045_PD_TZCDDR, MSTOP(TZCDDR, GENMASK(2, 0)),
> +                               PWRDN(IP2, 1), RZG2L_PD_F_ALWAYS_ON),
> +       DEF_PD("otfde_ddr",     R9A08G045_PD_OTFDE_DDR, 0, PWRDN(IP2, 2), RZG2L_PD_F_ALWAYS_ON),

MSTOP(PERI_CPU2, BIT(2))?

> +       DEF_PD("sdhi0",         R9A08G045_PD_SDHI0, MSTOP(PERI_COM, BIT(0)), PWRDN(IP1, 13), 0),
> +       DEF_PD("sdhi1",         R9A08G045_PD_SDHI1, MSTOP(PERI_COM, BIT(1)), PWRDN(IP1, 14), 0),
> +       DEF_PD("sdhi2",         R9A08G045_PD_SDHI2, MSTOP(PERI_COM, BIT(11)), PWRDN(IP1, 15), 0),
> +       DEF_PD("eth0",          R9A08G045_PD_ETHER0, MSTOP(PERI_COM, BIT(2)), PWRDN(IP1, 11), 0),
> +       DEF_PD("eth1",          R9A08G045_PD_ETHER1, MSTOP(PERI_COM, BIT(3)), PWRDN(IP1, 12), 0),
> +       DEF_PD("scif0",         R9A08G045_PD_SCIF0, MSTOP(MCPU2, BIT(1)), 0, 0),
> +};
> +

The rest LGTM.

Gr{oetje,eeting}s,

                        Geert


--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds