From: David Lechner <david@lechnology.com> To: Bartosz Golaszewski <brgl@bgdev.pl>, Sekhar Nori <nsekhar@ti.com>, Kevin Hilman <khilman@kernel.org>, Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>, Russell King <linux@armlinux.org.uk>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Ohad Ben-Cohen <ohad@wizery.com>, Bjorn Andersson <bjorn.andersson@linaro.org>, Philipp Zabel <p.zabel@pengutronix.de> Cc: linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-remoteproc@vger.kernel.org, Bartosz Golaszewski <bgolaszewski@baylibre.com> Subject: Re: [PATCH 4/8] clk: davinci: add a reset lookup table for psc0 Date: Wed, 21 Mar 2018 11:01:54 -0500 [thread overview] Message-ID: <4b985ed2-0db0-b4ad-8a9f-b8804e6d4db4@lechnology.com> (raw) In-Reply-To: <20180321120807.18032-5-brgl@bgdev.pl> On 03/21/2018 07:08 AM, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski <bgolaszewski@baylibre.com> > > In order to be able to use the reset framework in legacy boot mode as > well, add the reset lookup table to the psc driver for da850 variant. > > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> > --- > drivers/clk/davinci/psc-da850.c | 8 ++++++++ > drivers/clk/davinci/psc.c | 1 + > 2 files changed, 9 insertions(+) > > diff --git a/drivers/clk/davinci/psc-da850.c b/drivers/clk/davinci/psc-da850.c > index ccc7eb17bf3a..395db4b2c0ee 100644 > --- a/drivers/clk/davinci/psc-da850.c > +++ b/drivers/clk/davinci/psc-da850.c > @@ -6,6 +6,7 @@ > */ > > #include <linux/clk-provider.h> > +#include <linux/reset-controller.h> > #include <linux/clk.h> > #include <linux/clkdev.h> > #include <linux/init.h> > @@ -66,8 +67,15 @@ LPSC_CLKDEV3(ecap_clkdev, "fck", "ecap.0", > "fck", "ecap.1", > "fck", "ecap.2"); > > +static struct reset_control_lookup da850_psc0_reset_lookup_table[] = { > + RESET_LOOKUP("davinci-rproc.0", NULL, 15), > +}; > + > static int da850_psc0_init(struct device *dev, void __iomem *base) > { > + reset_controller_add_lookup("da850-psc0", > + da850_psc0_reset_lookup_table, > + ARRAY_SIZE(da850_psc0_reset_lookup_table)); Could there be a race condition here since you are adding the lookup *before* you are adding the actual provider? It seems like reset_controller_add_lookup() should be after davinci_psc_register_clocks(). > return davinci_psc_register_clocks(dev, da850_psc0_info, 16, base); > } > > diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c > index 3b0e59dfbdd7..063df62381ea 100644 > --- a/drivers/clk/davinci/psc.c > +++ b/drivers/clk/davinci/psc.c > @@ -425,6 +425,7 @@ __davinci_psc_register_clocks(struct device *dev, > > psc->rcdev.ops = &davinci_psc_reset_ops; > psc->rcdev.owner = THIS_MODULE; > + psc->rcdev.dev = dev; > psc->rcdev.of_node = dev->of_node; > psc->rcdev.of_reset_n_cells = 1; > psc->rcdev.of_xlate = davinci_psc_reset_of_xlate; >
WARNING: multiple messages have this Message-ID (diff)
From: david@lechnology.com (David Lechner) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 4/8] clk: davinci: add a reset lookup table for psc0 Date: Wed, 21 Mar 2018 11:01:54 -0500 [thread overview] Message-ID: <4b985ed2-0db0-b4ad-8a9f-b8804e6d4db4@lechnology.com> (raw) In-Reply-To: <20180321120807.18032-5-brgl@bgdev.pl> On 03/21/2018 07:08 AM, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski <bgolaszewski@baylibre.com> > > In order to be able to use the reset framework in legacy boot mode as > well, add the reset lookup table to the psc driver for da850 variant. > > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> > --- > drivers/clk/davinci/psc-da850.c | 8 ++++++++ > drivers/clk/davinci/psc.c | 1 + > 2 files changed, 9 insertions(+) > > diff --git a/drivers/clk/davinci/psc-da850.c b/drivers/clk/davinci/psc-da850.c > index ccc7eb17bf3a..395db4b2c0ee 100644 > --- a/drivers/clk/davinci/psc-da850.c > +++ b/drivers/clk/davinci/psc-da850.c > @@ -6,6 +6,7 @@ > */ > > #include <linux/clk-provider.h> > +#include <linux/reset-controller.h> > #include <linux/clk.h> > #include <linux/clkdev.h> > #include <linux/init.h> > @@ -66,8 +67,15 @@ LPSC_CLKDEV3(ecap_clkdev, "fck", "ecap.0", > "fck", "ecap.1", > "fck", "ecap.2"); > > +static struct reset_control_lookup da850_psc0_reset_lookup_table[] = { > + RESET_LOOKUP("davinci-rproc.0", NULL, 15), > +}; > + > static int da850_psc0_init(struct device *dev, void __iomem *base) > { > + reset_controller_add_lookup("da850-psc0", > + da850_psc0_reset_lookup_table, > + ARRAY_SIZE(da850_psc0_reset_lookup_table)); Could there be a race condition here since you are adding the lookup *before* you are adding the actual provider? It seems like reset_controller_add_lookup() should be after davinci_psc_register_clocks(). > return davinci_psc_register_clocks(dev, da850_psc0_info, 16, base); > } > > diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c > index 3b0e59dfbdd7..063df62381ea 100644 > --- a/drivers/clk/davinci/psc.c > +++ b/drivers/clk/davinci/psc.c > @@ -425,6 +425,7 @@ __davinci_psc_register_clocks(struct device *dev, > > psc->rcdev.ops = &davinci_psc_reset_ops; > psc->rcdev.owner = THIS_MODULE; > + psc->rcdev.dev = dev; > psc->rcdev.of_node = dev->of_node; > psc->rcdev.of_reset_n_cells = 1; > psc->rcdev.of_xlate = davinci_psc_reset_of_xlate; >
next prev parent reply other threads:[~2018-03-21 16:01 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-03-21 12:07 [PATCH 0/8] ARM: davinci: complete the conversion to using the reset framework Bartosz Golaszewski 2018-03-21 12:07 ` Bartosz Golaszewski 2018-03-21 12:08 ` [PATCH 1/8] reset: modify the way reset lookup works for board files Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 12:08 ` [PATCH 2/8] ARM: davinci: dts: make psc0 a reset provider Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 12:08 ` [PATCH 3/8] ARM: davinci: dts: add a reset control to the dsp node Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 14:04 ` Bartosz Golaszewski 2018-03-21 14:04 ` Bartosz Golaszewski 2018-03-21 16:07 ` David Lechner 2018-03-21 16:07 ` David Lechner 2018-03-21 12:08 ` [PATCH 4/8] clk: davinci: add a reset lookup table for psc0 Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 16:01 ` David Lechner [this message] 2018-03-21 16:01 ` David Lechner 2018-03-21 16:08 ` Bartosz Golaszewski 2018-03-21 16:08 ` Bartosz Golaszewski 2018-03-21 16:17 ` David Lechner 2018-03-21 16:17 ` David Lechner 2018-03-23 9:07 ` Bartosz Golaszewski 2018-03-23 9:07 ` Bartosz Golaszewski 2018-03-21 12:08 ` [PATCH 5/8] remoteproc: da8xx: add the missing checke for clk_enable() Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 16:21 ` David Lechner 2018-03-21 16:21 ` David Lechner 2018-03-21 12:08 ` [PATCH 6/8] remoteproc: da8xx: prepare and unprepare the clock where needed Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 12:08 ` [PATCH 7/8] remoteproc: da8xx: use the reset framework Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 12:08 ` [PATCH 8/8] clk: davinci: kill davinci_clk_reset_assert/deassert() Bartosz Golaszewski 2018-03-21 12:08 ` Bartosz Golaszewski 2018-03-21 16:23 ` David Lechner 2018-03-21 16:23 ` David Lechner
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