linux-kernel - Re: [PATCH v4 2/3] clk: bcm: Add BCM2711 DVP driver

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Date:   Thu, 11 Jun 2020 18:52:33 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Stefan Wahren <stefan.wahren@...e.com>
Cc:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        devicetree@...r.kernel.org, Tim Gover <tim.gover@...pberrypi.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Mike Turquette <mturquette@...libre.com>,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Phil Elwell <phil@...pberrypi.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 2/3] clk: bcm: Add BCM2711 DVP driver

Hi Stefan,

On Thu, Jun 11, 2020 at 05:50:30PM +0200, Stefan Wahren wrote:
> > diff --git a/drivers/clk/bcm/clk-bcm2711-dvp.c b/drivers/clk/bcm/clk-bcm2711-dvp.c
> > new file mode 100644
> > index 000000000000..84dbc886e303
> > --- /dev/null
> > +++ b/drivers/clk/bcm/clk-bcm2711-dvp.c
> > @@ -0,0 +1,120 @@
> > +// SPDX-License-Identifier: GPL-2.0-or-later
> > +// Copyright 2020 Cerno
> > +
> > +#include <linux/clk-provider.h>
> > +#include <linux/module.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/reset-controller.h>
> > +#include <linux/reset/reset-simple.h>
> > +
> > +#define DVP_HT_RPI_SW_INIT	0x04
> > +#define DVP_HT_RPI_MISC_CONFIG	0x08
> 
> sorry for not noticing this before. Are these defines specific to the
> Raspberry Pi, because of RPI?

I'm not entirely sure to be honest. It's the names that the register
have, but it's not clear to me if it's something specific to the RPi
itself, or it just means something else entirely.

Maxime