2024-02-16 14:28:44

by Geert Uytterhoeven

[permalink] [raw]
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 <[email protected]> wrote:
> From: Claudiu Beznea <[email protected]>
>
> Instantiate power domains for the currently enabled IPs of R9A08G045 SoC.
>
> Signed-off-by: Claudiu Beznea <[email protected]>

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@linux-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


2024-02-21 13:36:51

by claudiu beznea

[permalink] [raw]
Subject: Re: [PATCH 10/17] clk: renesas: r9a08g045: Add support for power domains

Hi, Geert,

On 16.02.2024 16:10, Geert Uytterhoeven wrote:
> Hi Claudiu,
>
> On Thu, Feb 8, 2024 at 1:44 PM Claudiu <[email protected]> wrote:
>> From: Claudiu Beznea <[email protected]>
>>
>> Instantiate power domains for the currently enabled IPs of R9A08G045 SoC.
>>
>> Signed-off-by: Claudiu Beznea <[email protected]>
>
> 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.

Indeed, mine, too. I took as reference the table "Registers for Module
Standby Mode". I asked for clarifications. The TF-A software also uses
BIT(3) for setting this.

>
>> + 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).

I wanted to keep PHY separated but there's no reason for doing that,
AFAICT. I'll update it.

>
>> + 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))?

OK.

Thank you,
Claudiu Beznea

>
>> + 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 -- [email protected]
>
> 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