linux-kernel - Re: [PATCH 07/89] clk: bcm: rpi: Allow the driver to be probed by DT

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Message-ID: <20200323151302.ckpvc4a7eiinnfbq@gilmour.lan>
Date:   Mon, 23 Mar 2020 16:13:02 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Stefan Wahren <stefan.wahren@...e.com>
Cc:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-clk@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        linux-rpi-kernel@...ts.infradead.org,
        Phil Elwell <phil@...pberrypi.com>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 07/89] clk: bcm: rpi: Allow the driver to be probed by DT

Hi Stefan,

On Sun, Mar 01, 2020 at 01:16:28PM +0100, Stefan Wahren wrote:
> Hi Maxime,
>
> Am 24.02.20 um 10:06 schrieb Maxime Ripard:
> > The current firmware clock driver for the RaspberryPi can only be probed by
> > manually registering an associated platform_device.
> >
> > While this works fine for cpufreq where the device gets attached a clkdev
> > lookup, it would be tedious to maintain a table of all the devices using
> > one of the clocks exposed by the firmware.
> >
> > Since the DT on the other hand is the perfect place to store those
> > associations, make the firmware clocks driver probe-able through the device
> > tree so that we can represent it as a node.
> >
> > Cc: Michael Turquette <mturquette@...libre.com>
> > Cc: Stephen Boyd <sboyd@...nel.org>
> > Cc: linux-clk@...r.kernel.org
> > Signed-off-by: Maxime Ripard <maxime@...no.tech>
>
> FWIW i want to mention that starting with this commit, X doesn't start
> on my Raspberry Pi 3A (applied on top of linux-next using
> multi_v7_defconfig).

Was this the same issue you reported with the HSM clock rate, or truly
an issue with my series?

Maxime

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