linux-kernel - Re: [PATCH v4 2/2] dt-bindings: mtd: Document Macronix raw NAND controller bindings

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Message-ID: <OFFBD1710A.54AC467B-ON48258427.0023FCA3-48258427.00255B71@mxic.com.tw>
Date:   Fri, 28 Jun 2019 14:48:02 +0800
From:   masonccyang@...c.com.tw
To:     "Miquel Raynal" <miquel.raynal@...tlin.com>
Cc:     anders.roxell@...aro.org, bbrezillon@...nel.org,
        broonie@...nel.org, christophe.kerello@...com,
        computersforpeace@...il.com, devicetree@...r.kernel.org,
        dwmw2@...radead.org, jianxin.pan@...ogic.com, juliensu@...c.com.tw,
        lee.jones@...aro.org, liang.yang@...ogic.com,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        marek.vasut@...il.com, paul@...pouillou.net, paul.burton@...s.com,
        richard@....at, stefan@...er.ch, vigneshr@...com
Subject: Re: [PATCH v4 2/2] dt-bindings: mtd: Document Macronix raw NAND controller
 bindings

Hi Miquel,

> > Document the bindings used by the Macronix raw NAND controller.
> > 
> > Signed-off-by: Mason Yang <masonccyang@...c.com.tw>
> > ---
> >  .../devicetree/bindings/mtd/mxic-nand.txt          | 26 
++++++++++++++++++++++
> >  1 file changed, 26 insertions(+)
> >  create mode 100644 
Documentation/devicetree/bindings/mtd/mxic-nand.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/mtd/mxic-nand.txt b/
> Documentation/devicetree/bindings/mtd/mxic-nand.txt
> > new file mode 100644
> > index 0000000..3d198e4
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mtd/mxic-nand.txt
> > @@ -0,0 +1,26 @@
> > +Macronix Raw NAND Controller Device Tree Bindings
> > +-------------------------------------------------
> > +
> > +Required properties:
> > +- compatible: should be "mxic,raw-nand-ctlr"
> 
> I would prefer "macronix,nand-controller"

okay, will patch it.

> 
> > +- reg: should contain 1 entrie for the registers
> 
>                            entry
> 
> > +- reg-names: should contain "regs"
> 
> Not sure you need that?

for a base address of ctlr registers.

> 
> > +- interrupts: interrupt line connected to this NAND controller
> > +- clock-names: should contain "ps_clk", "send_clk" and "send_dly_clk"
> > +- clocks: should contain 3 entries for the "ps_clk", "send_clk" and
> > +    "send_dly_clk" clocks
> 
> s/entries/phandles/ ?

?
as I know that kernel views the phandle values as device tree structure
information instead of device tree data and thus does not store them as
properties.

> 
> > +
> > +Example:
> > +
> > +   nand: mxic-nfc@...30000 {
> > +      compatible = "mxic,raw-nand-ctlr";
> > +      reg = <0x43c30000 0x10000>;
> > +      reg-names = "regs";
> > +      clocks = <&clkwizard 0>, <&clkwizard 1>, <&clkc 15>;
> > +      clock-names = "send_clk", "send_dly_clk", "ps_clk";
> > +
> > +      nand-ecc-mode = "soft";
> > +      nand-ecc-algo = "bch";
> > +      nand-ecc-step-size = <512>;
> > +      nand-ecc-strength = <8>;
> 
> The last 4 lines are probably not needed.

okay, will remove them.

thanks for your review.
best regards,
Mason

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CONFIDENTIALITY NOTE:

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