LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Maxime Ripard <maxime@cerno.tech>
To: Samuel Holland <samuel@sholland.org>
Cc: Icenowy Zheng <icenowy@sipeed.com>,
	Rob Herring <robh+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
	Jernej Skrabec <jernej.skrabec@gmail.com>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Andre Przywara <andre.przywara@arm.com>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 11/17] clk: sunxi-ng: add support for Allwinner R329 CCU
Date: Wed, 25 Aug 2021 16:54:34 +0200	[thread overview]
Message-ID: <20210825145434.vdrhgrgblnnmvmve@gilmour> (raw)
In-Reply-To: <3e56e53f-e6df-50cf-5545-e9132e521ed1@sholland.org>

[-- Attachment #1: Type: text/plain, Size: 4062 bytes --]

On Thu, Aug 19, 2021 at 09:41:26PM -0500, Samuel Holland wrote:
> On 8/2/21 1:22 AM, Icenowy Zheng wrote:
> > Allwinner R329 has a CCU that is similar to the H616 one, but it's cut
> > down and have PLLs moved out.
> > 
> > Add support for it.
> > 
> > Signed-off-by: Icenowy Zheng <icenowy@sipeed.com>
> > ---
> >  drivers/clk/sunxi-ng/Kconfig                |   5 +
> >  drivers/clk/sunxi-ng/Makefile               |   1 +
> >  drivers/clk/sunxi-ng/ccu-sun50i-r329.c      | 526 ++++++++++++++++++++
> >  drivers/clk/sunxi-ng/ccu-sun50i-r329.h      |  32 ++
> >  include/dt-bindings/clock/sun50i-r329-ccu.h |  73 +++
> >  include/dt-bindings/reset/sun50i-r329-ccu.h |  45 ++
> >  6 files changed, 682 insertions(+)
> >  create mode 100644 drivers/clk/sunxi-ng/ccu-sun50i-r329.c
> >  create mode 100644 drivers/clk/sunxi-ng/ccu-sun50i-r329.h
> >  create mode 100644 include/dt-bindings/clock/sun50i-r329-ccu.h
> >  create mode 100644 include/dt-bindings/reset/sun50i-r329-ccu.h
> > 
> > diff --git a/drivers/clk/sunxi-ng/Kconfig b/drivers/clk/sunxi-ng/Kconfig
> > index e49b2c2fa5b7..4b32d5f81ea8 100644
> > --- a/drivers/clk/sunxi-ng/Kconfig
> > +++ b/drivers/clk/sunxi-ng/Kconfig
> > @@ -42,6 +42,11 @@ config SUN50I_H6_R_CCU
> >  	default ARM64 && ARCH_SUNXI
> >  	depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
> >  
> > +config SUN50I_R329_CCU
> > +	bool "Support for the Allwinner R329 CCU"
> > +	default ARM64 && ARCH_SUNXI
> > +	depends on (ARM64 && ARCH_SUNXI) || COMPILE_TEST
> > +
> >  config SUN50I_R329_R_CCU
> >  	bool "Support for the Allwinner R329 PRCM CCU"
> >  	default ARM64 && ARCH_SUNXI
> > diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile
> > index db338a2188fd..62f3c5bf331c 100644
> > --- a/drivers/clk/sunxi-ng/Makefile
> > +++ b/drivers/clk/sunxi-ng/Makefile
> > @@ -28,6 +28,7 @@ obj-$(CONFIG_SUN50I_A100_R_CCU)	+= ccu-sun50i-a100-r.o
> >  obj-$(CONFIG_SUN50I_H6_CCU)	+= ccu-sun50i-h6.o
> >  obj-$(CONFIG_SUN50I_H616_CCU)	+= ccu-sun50i-h616.o
> >  obj-$(CONFIG_SUN50I_H6_R_CCU)	+= ccu-sun50i-h6-r.o
> > +obj-$(CONFIG_SUN50I_R329_CCU)	+= ccu-sun50i-r329.o
> >  obj-$(CONFIG_SUN50I_R329_R_CCU)	+= ccu-sun50i-r329-r.o
> >  obj-$(CONFIG_SUN4I_A10_CCU)	+= ccu-sun4i-a10.o
> >  obj-$(CONFIG_SUN5I_CCU)		+= ccu-sun5i.o
> > diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-r329.c b/drivers/clk/sunxi-ng/ccu-sun50i-r329.c
> > new file mode 100644
> > index 000000000000..a0b4cfd6e1db
> > --- /dev/null
> > +++ b/drivers/clk/sunxi-ng/ccu-sun50i-r329.c
> > @@ -0,0 +1,526 @@
> > +// SPDX-License-Identifier: GPL-2.0
> > +/*
> > + * Based on the H616 CCU driver, which is:
> > + *   Copyright (c) 2020 Arm Ltd.
> > + */
> > +
> > +#include <linux/clk-provider.h>
> > +#include <linux/io.h>
> > +#include <linux/module.h>
> > +#include <linux/of_address.h>
> > +#include <linux/platform_device.h>
> > +
> > +#include "ccu_common.h"
> > +#include "ccu_reset.h"
> > +
> > +#include "ccu_div.h"
> > +#include "ccu_gate.h"
> > +#include "ccu_mp.h"
> > +#include "ccu_mult.h"
> > +#include "ccu_nk.h"
> > +#include "ccu_nkm.h"
> > +#include "ccu_nkmp.h"
> > +#include "ccu_nm.h"
> > +
> > +#include "ccu-sun50i-r329.h"
> > +
> > +/*
> > + * An external divider of PLL-CPUX is controlled here. As it's similar to
> > + * the external divider of PLL-CPUX on previous SoCs (only usable under
> > + * 288MHz}, ignore it.
> 
> Mismatched (braces} here
> 
> > + */
> > +static const char * const cpux_parents[] = { "osc24M", "osc32k", "iosc",
> > +					     "pll-cpux", "pll-periph",
> > +					     "pll-periph-2x",
> > +					     "pll=periph-800m" };
> 
> = should be a -.
> 
> Now that these PLLs are in a different device, how is this supposed to affect
> the DT binding? Do we put all of them in the clocks property?
> 
> If so, we can use .fw_name at some point. If not, why bother with the clocks
> property at all? This is another part of the "let's get the clock tree right
> from the start" discussion.

Agreed

Maxime

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]

  reply	other threads:[~2021-08-25 14:54 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-02  6:21 [PATCH 00/17] Basical Allwinner R329 support Icenowy Zheng
2021-08-02  6:21 ` [PATCH 01/17] rtc: sun6i: Fix time overflow handling Icenowy Zheng
2021-08-02  6:21 ` [PATCH 02/17] rtc: sun6i: Add support for linear day storage Icenowy Zheng
2021-08-02  6:21 ` [PATCH 03/17] rtc: sun6i: Add support for broken-down alarm registers Icenowy Zheng
2021-08-02  6:21 ` [PATCH 04/17] dt-bindings: rtc: sun6i: add compatible string for R329 RTC Icenowy Zheng
2021-08-06 21:39   ` Rob Herring
2021-08-02  6:22 ` [PATCH 05/17] rtc: sun6i: add support " Icenowy Zheng
2021-08-02  6:22 ` [PATCH 06/17] dt-bindings: pinctrl: document Allwinner R329 PIO and R-PIO Icenowy Zheng
2021-08-06 21:40   ` Rob Herring
2021-08-18  8:48   ` Maxime Ripard
2021-08-19  2:40   ` Samuel Holland
2021-08-02  6:22 ` [PATCH 07/17] pinctrl: sunxi: add support for R329 CPUX pin controller Icenowy Zheng
2021-08-11  9:23   ` Linus Walleij
2021-08-18  8:48   ` Maxime Ripard
2021-08-19  3:09   ` Samuel Holland
2021-08-02  6:22 ` [PATCH 08/17] pinctrl: sunxi: add support for R329 R-PIO " Icenowy Zheng
2021-08-18  8:52   ` Maxime Ripard
2021-08-19  3:22   ` Samuel Holland
2021-08-02  6:22 ` [PATCH 09/17] dt-bindings: clock: sunxi-ng: add compatibles for R329 CCUs Icenowy Zheng
2021-08-06 21:41   ` Rob Herring
2021-08-02  6:22 ` [PATCH 10/17] clk: sunxi=ng: add support for R329 R-CCU Icenowy Zheng
2021-08-06 21:42   ` Rob Herring
2021-08-18  8:50   ` Maxime Ripard
2021-08-20  0:55   ` Samuel Holland
2021-08-20  4:34     ` Jernej Škrabec
2021-08-25 14:50       ` Maxime Ripard
2021-08-25 15:03         ` Jernej Škrabec
2021-08-25 15:37           ` Maxime Ripard
2021-08-26  0:20       ` Samuel Holland
2021-08-02  6:22 ` [PATCH 11/17] clk: sunxi-ng: add support for Allwinner R329 CCU Icenowy Zheng
2021-08-06 21:42   ` Rob Herring
2021-08-20  2:41   ` Samuel Holland
2021-08-25 14:54     ` Maxime Ripard [this message]
2021-08-02  6:22 ` [PATCH 12/17] dt-bindings: mmc: sunxi-mmc: add R329 MMC compatible string Icenowy Zheng
2021-08-06 21:42   ` Rob Herring
2021-08-18  8:47   ` Maxime Ripard
2021-08-02  6:22 ` [PATCH 13/17] mmc: sunxi: add support for R329 MMC controllers Icenowy Zheng
2021-08-18  8:47   ` Maxime Ripard
2021-08-20  2:43   ` Samuel Holland
2021-08-02  6:22 ` [PATCH 14/17] dt-bindings: arm: sunxi: add compatible strings for Sipeed MaixSense Icenowy Zheng
2021-08-06 21:43   ` Rob Herring
2021-08-18  9:03   ` Maxime Ripard
2021-08-02  6:22 ` [PATCH 15/17] arm64: allwinner: dts: add DTSI file for R329 SoC Icenowy Zheng
2021-08-18  9:01   ` Maxime Ripard
     [not found]     ` <74F51516-2470-4A49-972B-E19D8EDD9A3D@sipeed.com>
2021-08-19  2:32       ` Samuel Holland
2021-08-20  3:06         ` Samuel Holland
2021-08-25 15:00           ` Maxime Ripard
2021-08-20  2:59   ` Samuel Holland
2021-08-02  6:22 ` [PATCH 16/17] arm64: allwinner: dts: r329: add DTSI file for Sipeed Maix IIA Icenowy Zheng
2021-08-02  6:22 ` [PATCH 17/17] arm64: allwinner: dts: r329: add support for Sipeed MaixSense Icenowy Zheng
2021-08-10 11:04 ` [PATCH 00/17] Basical Allwinner R329 support Ulf Hansson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210825145434.vdrhgrgblnnmvmve@gilmour \
    --to=maxime@cerno.tech \
    --cc=alexandre.belloni@bootlin.com \
    --cc=andre.przywara@arm.com \
    --cc=devicetree@vger.kernel.org \
    --cc=icenowy@sipeed.com \
    --cc=jernej.skrabec@gmail.com \
    --cc=linus.walleij@linaro.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-sunxi@lists.linux.dev \
    --cc=robh+dt@kernel.org \
    --cc=samuel@sholland.org \
    --cc=ulf.hansson@linaro.org \
    --cc=wens@csie.org \
    --subject='Re: [PATCH 11/17] clk: sunxi-ng: add support for Allwinner R329 CCU' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).