Re: [PATCH] ARM: k3: beagleplay: Enable 32k crystal

[Sascha Hauer <s.hauer@pengutronix.de>]

On Wed, Jun 11, 2025 at 08:24:22PM +0200, Ahmad Fatoum wrote:
> Hello Lars,
> 
> On 6/11/25 11:36, Lars Schmidt wrote:
> > Signed-off-by: Lars Schmidt <l.schmidt@pengutronix.de>
> 
> Would it make sense to describe the existence of the external 32K
> crystal in the DT, so we don't need to add code for every board?

Yes. For now it's ok though.

Sascha

> 
> Thanks,
> Ahmad
> 
> > ---
> >  arch/arm/boards/beagleplay/Makefile |  1 +
> >  arch/arm/boards/beagleplay/board.c  | 30 +++++++++++++++++++++++++++++
> >  2 files changed, 31 insertions(+)
> >  create mode 100644 arch/arm/boards/beagleplay/board.c
> > 
> > diff --git a/arch/arm/boards/beagleplay/Makefile b/arch/arm/boards/beagleplay/Makefile
> > index a8c7320bdb..2d257fb4b2 100644
> > --- a/arch/arm/boards/beagleplay/Makefile
> > +++ b/arch/arm/boards/beagleplay/Makefile
> > @@ -1,2 +1,3 @@
> >  pbl-y += lowlevel.o
> > +obj-y += board.o
> >  pbl-$(CONFIG_MACH_K3_CORTEX_R5) += entry-r5.o ddr.o
> > diff --git a/arch/arm/boards/beagleplay/board.c b/arch/arm/boards/beagleplay/board.c
> > new file mode 100644
> > index 0000000000..dd42f0b7f0
> > --- /dev/null
> > +++ b/arch/arm/boards/beagleplay/board.c
> > @@ -0,0 +1,30 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +
> > +#define pr_fmt(fmt) "beagleplay: " fmt
> > +
> > +#include <linux/kernel.h>
> > +#include <mach/k3/common.h>
> > +#include <driver.h>
> > +#include <bbu.h>
> > +
> > +static int beagleplay_probe(struct device *dev)
> > +{
> > +	am625_enable_32k_crystal();
> > +
> > +	return 0;
> > +}
> > +
> > +static __maybe_unused struct of_device_id beagleplay_ids[] = {
> > +	{
> > +		.compatible = "beagle,am625-beagleplay",
> > +	}, {
> > +		/* sentinel */
> > +	}
> > +};
> > +
> > +static struct driver beagleplay_driver = {
> > +	.name = "beagleplay",
> > +	.probe = beagleplay_probe,
> > +	.of_compatible = beagleplay_ids,
> > +};
> > +coredevice_platform_driver(beagleplay_driver);
> 
> -- 
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> 
> 

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