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Date: Fri, 13 Nov 2015 15:20:45 +0800
From: bayi cheng <bayi.cheng@...iatek.com>
To: Brian Norris <computersforpeace@...il.com>
CC: David Woodhouse <dwmw2@...radead.org>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Matthias Brugger <matthias.bgg@...il.com>,
"Daniel Kurtz" <djkurtz@...omium.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
<devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>, <linux-mtd@...ts.infradead.org>,
<srv_heupstream@...iatek.com>, <jteki@...nedev.com>,
<ezequiel@...guardiasur.com.ar>
Subject: Re: [PATCH v6 1/3] doc: dt: add documentation for Mediatek spi-nor
controller
On Wed, 2015-11-11 at 12:38 -0800, Brian Norris wrote:
> On Fri, Nov 06, 2015 at 11:48:07PM +0800, Bayi Cheng wrote:
> > Add device tree binding documentation for serial flash with
> > Mediatek serial flash controller
> >
> > Signed-off-by: Bayi Cheng <bayi.cheng@...iatek.com>
> > ---
>
> Applied to l2-mtd.git/next (for 4.5). This will show up in
> linux-next.git after the merge window.
>
> Also squashed in a small diff (below), to fix up some language issues
> and to refer the reader to the jedec,spi-nor.txt document.
>
OK, I will fix it in next patch!
> > .../devicetree/bindings/mtd/mtk-quadspi.txt | 41 ++++++++++++++++++++++
> > 1 file changed, 41 insertions(+)
> > create mode 100644 Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> >
> > diff --git a/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> > new file mode 100644
> > index 0000000..866b492
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> > @@ -0,0 +1,41 @@
> > +* MTD SPI nor driver for MTK MT81xx (and similar) serial flash controller
>
> The DT binding document shouldn't be talking about software (i.e.,
> shouldn't be talking about "drivers").
>
OK, I will fix it.
> > +
> > +Required properties:
> > +- compatible: should be "mediatek,mt8173-nor";
> > +- reg: physical base address and length of the controller's register
> > +- clocks: the phandle of the clock needed by the nor controller
> > +- clock-names: the name of the clocks
> > + the clocks needed "spi" and "sf". "spi" is used for spi bus,
> > + and "sf" is used for controller, these are the clocks witch
> > + hardware needs to enabling nor flash and nor flash controller.
> > + See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> > +- #address-cells: should be <1>
> > +- #size-cells: should be <0>
> > +
> > +The SPI Flash must be a child of the nor_flash node and must have a
> > +compatible property.
> > +
> > +Required properties:
> > +- compatible: May include a device-specific string consisting of the manufacturer
> > + and name of the chip. Must also include "jedec,spi-nor" for any
> > + SPI NOR flash that can be identified by the JEDEC READ ID opcode (0x9F).
> > +- reg : Chip-Select number
> > +
> > +Example:
> > +
> > +nor_flash: spi@...0d000 {
> > + compatible = "mediatek,mt8173-nor";
> > + reg = <0 0x1100d000 0 0xe0>;
> > + clocks = <&pericfg CLK_PERI_SPI>,
> > + <&topckgen CLK_TOP_SPINFI_IFR_SEL>;
> > + clock-names = "spi", "sf";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + status = "disabled";
> > +
> > + flash@0 {
> > + compatible = "jedec,spi-nor";
> > + reg = <0>;
> > + };
> > +};
> > +
>
> diff --git a/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> index 866b492c38d2..fb314f09861b 100644
> --- a/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> +++ b/Documentation/devicetree/bindings/mtd/mtk-quadspi.txt
> @@ -1,19 +1,19 @@
> -* MTD SPI nor driver for MTK MT81xx (and similar) serial flash controller
> +* Serial NOR flash controller for MTK MT81xx (and similar)
>
> Required properties:
> - compatible: should be "mediatek,mt8173-nor";
> - reg: physical base address and length of the controller's register
> -- clocks: the phandle of the clock needed by the nor controller
> -- clock-names: the name of the clocks
> - the clocks needed "spi" and "sf". "spi" is used for spi bus,
> +- clocks: the phandle of the clocks needed by the nor controller
> +- clock-names: the names of the clocks
> + the clocks should be named "spi" and "sf". "spi" is used for spi bus,
> and "sf" is used for controller, these are the clocks witch
> hardware needs to enabling nor flash and nor flash controller.
> See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
> - #address-cells: should be <1>
> - #size-cells: should be <0>
>
> -The SPI Flash must be a child of the nor_flash node and must have a
> -compatible property.
> +The SPI flash must be a child of the nor_flash node and must have a
> +compatible property. Also see jedec,spi-nor.txt.
>
> Required properties:
> - compatible: May include a device-specific string consisting of the manufacturer
Thanks for your instruction! and I will fix it in the next patch!
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