From mboxrd@z Thu Jan  1 00:00:00 1970
From: andrew@lunn.ch (Andrew Lunn)
Date: Mon, 28 Mar 2016 00:36:03 +0200
Subject: [PATCH v4] ARM: dts: vf610-zii-dev: Add ZII development board.
In-Reply-To: <56F84FAB.6010005@gmail.com>
References: <1459100733-21552-1-git-send-email-andrew@lunn.ch>
 <56F84FAB.6010005@gmail.com>
Message-ID: <20160327223603.GA21605@lunn.ch>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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