From: andrew@lunn.ch (Andrew Lunn)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4] ARM: dts: vf610-zii-dev: Add ZII development board.
Date: Mon, 28 Mar 2016 00:36:03 +0200 [thread overview]
Message-ID: <20160327223603.GA21605@lunn.ch> (raw)
In-Reply-To: <56F84FAB.6010005@gmail.com>
Hi Marek
> > +&i2c2 {
> > + clock-frequency = <100000>;
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_i2c2>;
> > + status = "okay";
> > +
> > + tca9548 at 70 {
>
> This should be pca9... , not tca9... :-)
The schematics for the board show that the device is a tca9548, so i
assume it is the T.I. part, not the NXP. But it is compatible at the
register level with the pca9548, hence the compatible string. So i
would say the label is correct, it matches the hardware.
>
> > + compatible = "nxp,pca9548";
> > + #address-cells = <1>;
> > + #size-cells = <0>;
> > + reg = <0x70>;
> > + reset-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
> > +
>
> [...]
>
> > +&uart0 {
> > + pinctrl-names = "default";
> > + pinctrl-0 = <&pinctrl_uart0>;
> > + status = "okay";
> > + dmas = <>;
> > + dma-names = "";
>
> Why is this dma stuff here ?
We have seen corruption of the serial transmit stream, when the DMA is
being used. As a workaround, we disable DMA.
Andrew
next prev parent reply other threads:[~2016-03-27 22:36 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-27 17:45 [PATCH v4] ARM: dts: vf610-zii-dev: Add ZII development board Andrew Lunn
2016-03-27 21:24 ` Marek Vasut
2016-03-27 22:36 ` Andrew Lunn [this message]
2016-03-27 22:48 ` Stefan Agner
2016-03-30 12:09 ` Shawn Guo
2016-03-30 12:34 ` Shawn Guo
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