From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH 3/6] docs: Document BCM23550 bindings Date: Mon, 9 May 2016 14:41:15 -0500 Message-ID: <20160509194115.GA11594@rob-hp-laptop> References: <1462481334-8943-1-git-send-email-chris.brand@broadcom.com> <1462481334-8943-4-git-send-email-chris.brand@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1462481334-8943-4-git-send-email-chris.brand@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org To: Chris Brand Cc: Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Florian Fainelli , Ray Jui , Scott Branden , Russell King , bcm-kernel-feedback-list@broadcom.com, linux-arm-kernel@lists.infradead.org, Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org, Raymond Ngun , Markus Mayer List-Id: devicetree@vger.kernel.org On Thu, May 05, 2016 at 01:48:51PM -0700, Chris Brand wrote: > Add binding document for Broadcom BCM23550 SoC. > > BCM23550 has a Cluster Dormant Control IP block that holds cores > in an idle state. Introduce a new CPU enable method in which the CDC is > accessed to bring the core online. > > Signed-off-by: Chris Brand > --- > .../bindings/arm/bcm/brcm,bcm23550-cpu-method.txt | 36 ++++++++++++++++++++++ > .../devicetree/bindings/arm/bcm/brcm,bcm23550.txt | 15 +++++++++ > Documentation/devicetree/bindings/arm/cpus.txt | 1 + > 3 files changed, 52 insertions(+) > create mode 100644 Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550-cpu-method.txt > create mode 100644 Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550.txt > > diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550-cpu-method.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550-cpu-method.txt > new file mode 100644 > index 000000000000..b1b16872bbca > --- /dev/null > +++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm23550-cpu-method.txt > @@ -0,0 +1,36 @@ > +Broadcom Kona Family CPU Enable Method > +-------------------------------------- > +This binding defines the enable method used for starting secondary > +CPUs in the following Broadcom SoCs: > + BCM23550 > + > +The enable method is specified by defining the following required > +properties in the "cpu" device tree node: > + - enable-method = "brcm,bcm23550-cpu-method"; "-cpu-method" is a bit redundant. brcm,bc23550 is probably sufficient. > + - secondary-boot-reg = <...>; > + > +The secondary-boot-reg property is a u32 value that specifies the > +physical address of the register used to request the ROM holding pen > +code release a secondary CPU. The value written to the register is > +formed by encoding the target CPU id into the low bits of the > +physical start address it should jump to.