Re: [PATCH v7 08/16] clk: samsung: clk-gs101: Add cmu_top, cmu_misc and cmu_apm support

Peter Griffin <peter.griffin@xxxxxxxxxx> · Mon, 11 Dec 2023 19:46:06 +0000

Hi Rob,

Thanks for your review.

On Mon, 11 Dec 2023 at 16:43, Rob Herring <robh+dt@xxxxxxxxxx> wrote:
>
> On Mon, Dec 11, 2023 at 10:24 AM Peter Griffin <peter.griffin@xxxxxxxxxx> wrote:
> >
> > cmu_top is the top level clock management unit which contains PLLs, muxes,
> > dividers and gates that feed the other clock management units.
> >
> > cmu_misc clocks IPs such as Watchdog and cmu_apm clocks ips part of the
> > APM module.
> >
> > Reviewed-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx>
> > Reviewed-by: André Draszik <andre.draszik@xxxxxxxxxx>
> > Acked-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx>
> > Tested-by: Will McVicker <willmcvicker@xxxxxxxxxx>
> > Signed-off-by: Peter Griffin <peter.griffin@xxxxxxxxxx>
> > ---
> >  drivers/clk/samsung/Makefile    |    1 +
> >  drivers/clk/samsung/clk-gs101.c | 2512 +++++++++++++++++++++++++++++++
> >  2 files changed, 2513 insertions(+)
> >  create mode 100644 drivers/clk/samsung/clk-gs101.c
> >
> > diff --git a/drivers/clk/samsung/Makefile b/drivers/clk/samsung/Makefile
> > index ebbeacabe88f..3056944a5a54 100644
> > --- a/drivers/clk/samsung/Makefile
> > +++ b/drivers/clk/samsung/Makefile
> > @@ -21,6 +21,7 @@ obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK) += clk-exynos7.o
> >  obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)  += clk-exynos7885.o
> >  obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)  += clk-exynos850.o
> >  obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)  += clk-exynosautov9.o
> > +obj-$(CONFIG_EXYNOS_ARM64_COMMON_CLK)  += clk-gs101.o
> >  obj-$(CONFIG_S3C64XX_COMMON_CLK)       += clk-s3c64xx.o
> >  obj-$(CONFIG_S5PV210_COMMON_CLK)       += clk-s5pv210.o clk-s5pv210-audss.o
> >  obj-$(CONFIG_TESLA_FSD_COMMON_CLK)     += clk-fsd.o
> > diff --git a/drivers/clk/samsung/clk-gs101.c b/drivers/clk/samsung/clk-gs101.c
> > new file mode 100644
> > index 000000000000..05361fce3c6f
> > --- /dev/null
> > +++ b/drivers/clk/samsung/clk-gs101.c
> > @@ -0,0 +1,2512 @@
> > +// SPDX-License-Identifier: GPL-2.0-only
> > +/*
> > + * Copyright (C) 2023 Linaro Ltd.
> > + * Author: Peter Griffin <peter.griffin@xxxxxxxxxx>
> > + *
> > + * Common Clock Framework support for GS101.
> > + */
> > +
> > +#include <linux/clk.h>
> > +#include <linux/clk-provider.h>
> > +#include <linux/of.h>
> > +#include <linux/of_device.h>
>
> You probably don't need this header. Please check.
>
> > +#include <linux/platform_device.h>

You are correct, this header isn't required. If a new series is
required I will remove it.

Whilst you're here I'd like to draw your attention to [PATCH 2/16]
where I've removed your reviewed-by tag in v7 because I added the ect
node documentation in google.yaml. The empty ect node is required to
be present by the bootloader or the device will boot loop. Can you
re-review that patch?

The alternative is to remove the empty ect node, and the binding
documentation for it and add your Reviewed-by tag back again. But then
an upstream kernel won't boot 'out the box' on a pixel 6 which seems
less than ideal default behaviour.

regards,

Peter.