From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v2 2/2] spi: add DT binding for clps711x SPI Date: Tue, 12 Jul 2016 15:49:47 -0500 Message-ID: <20160712204947.GA6182@rob-hp-laptop> References: <20160707094952.4111577-1-arnd@arndb.de> <20160707094952.4111577-2-arnd@arndb.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20160707094952.4111577-2-arnd@arndb.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Arnd Bergmann Cc: Mark Rutland , devicetree@vger.kernel.org, Alexander Shiyan , linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, Mark Brown , linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org On Thu, Jul 07, 2016 at 11:49:46AM +0200, Arnd Bergmann wrote: > This documents the binding used by Alexander Shiyan's DT support for > the clps711x SPI controller. > > I've left the file name to match the ARM platform port name "clps711x" > for consistency with the other bindings, even though the compatible > string refers to the later ep7309 chip. > > Linux no longer supports the old clps711x and ep72xx product lines, > but we still use the name. The entire family is now discontinued > by the manufacturer. > > Signed-off-by: Arnd Bergmann > Cc: Alexander Shiyan > --- > .../devicetree/bindings/spi/spi-clps711x.txt | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/spi-clps711x.txt > > diff --git a/Documentation/devicetree/bindings/spi/spi-clps711x.txt b/Documentation/devicetree/bindings/spi/spi-clps711x.txt > new file mode 100644 > index 000000000000..4c3ec13f423f > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/spi-clps711x.txt > @@ -0,0 +1,33 @@ > +Serial Peripheral Interface on Cirrus Logic CL-PS71xx, EP72xx, EP73xx > + > +Required properties > +- #address-cells: must be <1> > +- #size-cells: must be <0> > +- compatible: should include "cirrus,ep7209-spi" > +- reg: Address and length of one register range > +- interrupts: one interrupt line > +- clocks: One entry, refers to the SPI bus clock > +- cs-gpios: Specifies the gpio pins to be used for chipselects. > + See: Documentation/devicetree/bindings/spi/spi-bus.txt > + > +An additional register is present in the system controller, > +which is assumed to be in the same device tree, with and marked > +as compatible with "cirrus,ep7209-syscon3". > + > +Example: > + > +spi@80000500 { > + #address-cells = <1>; > + #size-cells = <0>; > + compatible = "cirrus,ep7209-spi"; > + reg = <0x80000500 0x4>; > + interrupts = <15>; > + clocks = <&clks CLPS711X_CLK_SPI>; > + status = "disabled"; > +}; > + > +syscon3: syscon@80002200 { This looks like it shouldn't be here. > + compatible = "cirrus,ep7209-syscon3", "syscon"; > + reg = <0x80002200 0x40>; > +}; > + > -- > 2.9.0 >