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Date: Tue, 26 Apr 2016 14:04:13 +0000
From: Amitkumar Karwar <akarwar@...vell.com>
To: Rob Herring <robh@...nel.org>
CC: "linux-bluetooth@...r.kernel.org" <linux-bluetooth@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
Wei-Ning Huang <wnhuang@...omium.org>,
Xinming Hu <huxm@...vell.com>
Subject: RE: [PATCH v7 1/2] dt: bindings: add MARVELL's bt-sd8xxx wireless
device
Hi Rob,
> From: Rob Herring [mailto:robh@...nel.org]
> Sent: Thursday, April 21, 2016 8:06 PM
> To: Amitkumar Karwar
> Cc: linux-bluetooth@...r.kernel.org; linux-kernel@...r.kernel.org;
> devicetree@...r.kernel.org; Wei-Ning Huang; Xinming Hu
> Subject: Re: [PATCH v7 1/2] dt: bindings: add MARVELL's bt-sd8xxx
> wireless device
>
> On Mon, Apr 18, 2016 at 05:23:49AM -0700, Amitkumar Karwar wrote:
> > From: Xinming Hu <huxm@...vell.com>
> >
> > Add device tree binding documentation for MARVELL's bluetooth sdio
> > (sd8897 and sd8997) chip.
> >
> > Signed-off-by: Xinming Hu <huxm@...vell.com>
> > Signed-off-by: Amitkumar Karwar <akarwar@...vell.com>
> > ---
> > Listing changelist for both 1/2 and 2/2 here
> > v2: Fixed build error reported by kbuild test robot
> > drivers/bluetooth/btmrvl_platform.c:141:22: error:
> > 'btmrvl_plt_pm_ops' undeclared here (not in a function)
> >
> > v3: Add NULL check for 'btmrvl_plt_dev'
> >
> > v4: Moved the bindings file to bindings/net/
> > Corrected the name of 'name' and 'compatible' properties(Rob
> > Herring)
> >
> > v5: Comments for wlan patches were applicable here as well. Like all
> binding
> > changes in single file, specifying node as a child of SDIO
> controller.
> >
> > v6: a)Use <chip>-bt order for compatible attribute(Rob Herring)
> > b)Split wakeuppin-gap to wakeup-pin and wakeup-gap(Rob Herring)
> > c)Use sdio function number for both the unit address and reg(Rob
> > Herring)
> >
> > v7: a)Use suggested vendor name and generic node name(Rob Herring)
> > ---
> > Documentation/devicetree/bindings/btmrvl.txt | 29 -----------
> > .../devicetree/bindings/net/marvell-bt-sd8xxx.txt | 57
> > ++++++++++++++++++++++
> > 2 files changed, 57 insertions(+), 29 deletions(-) delete mode
> > 100644 Documentation/devicetree/bindings/btmrvl.txt
> > create mode 100644
> > Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
> >
> > diff --git a/Documentation/devicetree/bindings/btmrvl.txt
> > b/Documentation/devicetree/bindings/btmrvl.txt
> > deleted file mode 100644
> > index 58f964b..0000000
> > --- a/Documentation/devicetree/bindings/btmrvl.txt
> > +++ /dev/null
> > @@ -1,29 +0,0 @@
> > -btmrvl
> > -------
> > -
> > -Required properties:
> > -
> > - - compatible : must be "btmrvl,cfgdata"
> > -
> > -Optional properties:
> > -
> > - - btmrvl,cal-data : Calibration data downloaded to the device
> during
> > - initialization. This is an array of 28 values(u8).
> > -
> > - - btmrvl,gpio-gap : gpio and gap (in msecs) combination to be
> > - configured.
> > -
> > -Example:
> > -
> > -GPIO pin 13 is configured as a wakeup source and GAP is set to 100
> > msecs -in below example.
> > -
> > -btmrvl {
> > - compatible = "btmrvl,cfgdata";
> > -
> > - btmrvl,cal-data = /bits/ 8 <
> > - 0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02
> > - 0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00
> > - 0x00 0x00 0xf0 0x00>;
> > - btmrvl,gpio-gap = <0x0d64>;
> > -};
> > diff --git
> > a/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
> > b/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
> > new file mode 100644
> > index 0000000..17f8470
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
> > @@ -0,0 +1,57 @@
> > +Marvell 8897/8997 (sd8897/sd8997) bluetooth SDIO devices
> > +------
> > +
> > +Required properties:
> > +
> > + - compatible : should be one of the following:
> > + * "marvell,sd8897-bt"
> > + * "marvell,sd8997-bt"
> > +
> > +Optional properties:
> > +
> > + - marvell,cal-data : Calibration data downloaded to the device
> during
> > + initialization. This is an array of 28 values(u8).
> > +
> > + - btmrvl,wakeup-pin : 'wakeup-pin' represents wakeup pin number of
> the bluetooth
> > + chip. firmware will use the pin to wakeup host system.
> > + - btmrvl,wakeup-gap-msec : wakeup gap represents wakeup latency of
> the host platform.
> > + The value will be configured to firmware. This is
> needed to work
> > + chip's sleep feature as expected.
>
> These should be marvell, not btmrvl.
>
> Also, -ms is the standard unit rather than -msec as defined in
> Documentation/devicetree/bindings/property-units.txt.
>
> > + - interrupt-parent: phandle of the parent interrupt controller
> > + - interrupts : interrupt pin number to the cpu. Driver will request
> an irq based on
> > + this interrupt number. During system suspend, the irq will
> be enabled
> > + so that the bluetooth chip can wakeup host platform under
> certain
> > + condition. During system resume, the irq will be disabled
> to make sure
> > + unnecessary interrupt is not received.
> > +
> > +Example:
> > +
> > +IRQ pin 119 is used as system wakeup source interrupt.
> > +wakeup pin 13 and gap 100ms are configured so that firmware can
> > +wakeup host using this device side pin and wakeup latency.
> > +calibration data is also available in below example.
> > +
> > +&mmc3 {
> > + status = "okay";
> > + vmmc-supply = <&wlan_en_reg>;
> > + bus-width = <4>;
> > + cap-power-off-card;
> > + keep-power-in-suspend;
> > +
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + btmrvl: bluetooth@2 {
> > + compatible = "marvell,sd8897-bt";
> > + reg = <2>;
> > + interrupt-parent = <&pio>;
> > + interrupts = <119 IRQ_TYPE_LEVEL_LOW>;
> > +
> > + btmrvl,cal-data = /bits/ 8 <
> > + 0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04
> 0x02
> > + 0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00
> 0x00
> > + 0x00 0x00 0xf0 0x00>;
> > + btmrvl,wakeup-pin = <0x0d>;
> > + btmrvl,wakeup-gap-msec = <0x64>;
>
> These are wrong too.
>
Thanks for review. I just submitted updated version which resolves the comments.
Regards,
Amitkumar
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