linux-kernel - Re: [PATCH 07/16] reset: rzg2l-usbphy-ctrl: Get reset control array

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Message-ID: <CAMuHMdWcCGMf0At7=DN_PydZyriiOcpR=YQAqw-xsARSVF6Wyg@mail.gmail.com>
Date: Tue, 8 Oct 2024 16:46:49 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Claudiu <claudiu.beznea@...on.dev>
Cc: vkoul@...nel.org, kishon@...nel.org, robh@...nel.org, krzk+dt@...nel.org, 
	conor+dt@...nel.org, p.zabel@...gutronix.de, magnus.damm@...il.com, 
	gregkh@...uxfoundation.org, mturquette@...libre.com, sboyd@...nel.org, 
	yoshihiro.shimoda.uh@...esas.com, biju.das.jz@...renesas.com, 
	ulf.hansson@...aro.org, linux-phy@...ts.infradead.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-renesas-soc@...r.kernel.org, linux-usb@...r.kernel.org, 
	linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org, 
	linux-pm@...r.kernel.org, Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH 07/16] reset: rzg2l-usbphy-ctrl: Get reset control array

On Thu, Aug 22, 2024 at 5:28 PM Claudiu <claudiu.beznea@...on.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
>
> Before accessing the USB area of the RZ/G3S SoC the PWRRDY bit of the
> SYS_USB_PWRRDY register need to be cleared. When USB area is not used the
> PWRRDY bit of the SYS_USB_PWRRDY register need to be set. This register is
> in the SYSC controller address space and the assert/de-assert of the
> signal handled by SYSC_USB_PWRRDY was implemented as a reset signal.
>
> The USB modules available on the RZ/G3S SoC that need this bit set are:
> - USB ch0 (supporting host and peripheral mode)
> - USB ch2 (supporting host mode)
> - USBPHY control
>
> As the USBPHY control is the root device for all the other USB channels
> (USB ch0, USB ch1) add support to set the PWRRDY for the USB area when
> initializing the USBPHY control. As this is done though reset signals
> get the reset array in the USBPHY control driver.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

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