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References: <20240423175900.702640-1-prabhakar.mahadev-lad.rj@bp.renesas.com> <20240423175900.702640-7-prabhakar.mahadev-lad.rj@bp.renesas.com>
In-Reply-To: <20240423175900.702640-7-prabhakar.mahadev-lad.rj@bp.renesas.com>
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Wed, 22 May 2024 14:05:18 +0200
Message-ID: <CAMuHMdV6UVPKhXcwYaY915JBwram8jSm0i=Ky9tkyehJM2w6jg@mail.gmail.com>
Subject: Re: [PATCH v2 06/13] pinctrl: renesas: pinctrl-rzg2l: Add function
 pointers for locking/unlocking the PFC register
To: Prabhakar <prabhakar.csengg@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>, Rob Herring <robh@kernel.org>, 
	Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, 
	Magnus Damm <magnus.damm@gmail.com>, linux-renesas-soc@vger.kernel.org, 
	linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, 
	linux-kernel@vger.kernel.org, Biju Das <biju.das.jz@bp.renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@renesas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
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On Tue, Apr 23, 2024 at 7:59=E2=80=AFPM Prabhakar <prabhakar.csengg@gmail.c=
om> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
>
> On the RZ/G2L SoC, the PFCWE bit controls writing to PFC registers.
> However, on the RZ/V2H(P) SoC, the PFCWE (REGWE_A on RZ/V2H) bit controls
> writing to both PFC and PMC registers. Additionally, BIT(7) B0WI is
> undocumented for the PWPR register on RZ/V2H(P) SoC. To accommodate these
> differences across SoC variants, introduce the set_pfc_mode() and
> pm_set_pfc() function pointers.
>
> Note, in rzg2l_pinctrl_set_pfc_mode() the pwpr_pfc_unlock() call is now
> called before PMC read/write and pwpr_pfc_lock() call is now called after
> PMC read/write this is to keep changes minimal for RZ/V2H(P).
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
> RFC->v2
> - Introduced function pointer for (un)lock

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

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. Bu=
t
when I'm talking to journalists I just say "programmer" or something like t=
hat.
                                -- Linus Torvalds