Re: [PATCH v2 3/7] soc: renesas: r9a06g032-sysctrl: Handle h2mode device-tree property

From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Herve Codina <herve.codina@bootlin.com>
Cc: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Magnus Damm <magnus.damm@gmail.com>,
	Gareth Williams <gareth.williams.jx@renesas.com>,
	linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>
Subject: Re: [PATCH v2 3/7] soc: renesas: r9a06g032-sysctrl: Handle h2mode device-tree property
Date: Mon, 14 Nov 2022 14:32:03 +0100	[thread overview]
Message-ID: <CAMuHMdVrx3ug+RKuNXauCLKFYr5qZedrj7KmME0vzRysoqFzPQ@mail.gmail.com> (raw)
In-Reply-To: <20221114111513.1436165-4-herve.codina@bootlin.com>

Hi Hervé,

On Mon, Nov 14, 2022 at 12:15 PM Herve Codina <herve.codina@bootlin.com> wrote:
>
> Handle the h2mode property and forces the CFG_USB[H2MODE] bit
> accordingly.
>
> Signed-off-by: Herve Codina <herve.codina@bootlin.com>

Thanks for the update!

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Minor nit below.

> @@ -966,6 +967,26 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev)
>         clocks->reg = of_iomap(np, 0);
>         if (WARN_ON(!clocks->reg))
>                 return -ENOMEM;
> +
> +       error = of_property_read_u32(np, "renesas,h2mode", &h2mode);
> +       if (!error) {
> +               usb = readl(clocks->reg + R9A06G032_SYSCTRL_USB);
> +               switch (h2mode) {
> +               case 0:
> +                       /* 1 host, 1 device */
> +                       usb &= ~R9A06G032_SYSCTRL_USB_H2MODE;
> +                       break;
> +               case 1:
> +                       /* 2 hosts */
> +                       usb |= R9A06G032_SYSCTRL_USB_H2MODE;
> +                       break;
> +               default:
> +                       dev_err(dev, "invalid h2mode %d\n", h2mode);

%u

> +                       return -EINVAL;
> +               }
> +               writel(usb, clocks->reg + R9A06G032_SYSCTRL_USB);
> +       }
> +
>         for (i = 0; i < ARRAY_SIZE(r9a06g032_clocks); ++i) {
>                 const struct r9a06g032_clkdesc *d = &r9a06g032_clocks[i];
>                 const char *parent_name = d->source ?

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

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