| Message ID | 20171013090200.31034-17-miquel.raynal@free-electrons.com |
|---|---|
| State | New |
| Headers | show |
| Series | Support armada-37xx second UART port | expand |
Hi Miquel, On ven., oct. 13 2017, Miquel Raynal <miquel.raynal@free-electrons.com> wrote: > Fill ESPRESSObin uart0 node with pinctrl information like in the > Armada-3720-DB device tree (which uses the same node). > > Also explain how to enable the second UART port available on the > headers. This second port is not enabled by default because both > headers are dedicated to expose general purpose pins and remapping > some of them to use the second UART would break existing users. > > Suggested-by: László ÁSHIN <laszlo@ashin.hu> > Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> Applied on mvebu/dt64 Thanks, Gregory > --- > > Changes since v1: comment about UART1 node. > > arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts > index 2ce52ba74f73..bdfb5553ddb5 100644 > --- a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts > +++ b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts > @@ -98,9 +98,21 @@ > > /* Exported on the micro USB connector J5 through an FTDI */ > &uart0 { > + pinctrl-names = "default"; > + pinctrl-0 = <&uart1_pins>; > status = "okay"; > }; > > +/* > + * Connector J17 and J18 expose a number of different features. Some pins are > + * multiplexed. This is the case for instance for the following features: > + * - UART1 (pin 24 = RX, pin 26 = TX). See armada-3720-db.dts for an example of > + * how to enable it. Beware that the signals are 1.8V TTL. > + * - I2C > + * - SPI > + * - MMC > + */ > + > /* J7 */ > &usb3 { > status = "okay"; > -- > 2.11.0 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
diff --git a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts index 2ce52ba74f73..bdfb5553ddb5 100644 --- a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts +++ b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts @@ -98,9 +98,21 @@ /* Exported on the micro USB connector J5 through an FTDI */ &uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart1_pins>; status = "okay"; }; +/* + * Connector J17 and J18 expose a number of different features. Some pins are + * multiplexed. This is the case for instance for the following features: + * - UART1 (pin 24 = RX, pin 26 = TX). See armada-3720-db.dts for an example of + * how to enable it. Beware that the signals are 1.8V TTL. + * - I2C + * - SPI + * - MMC + */ + /* J7 */ &usb3 { status = "okay";
Fill ESPRESSObin uart0 node with pinctrl information like in the Armada-3720-DB device tree (which uses the same node). Also explain how to enable the second UART port available on the headers. This second port is not enabled by default because both headers are dedicated to expose general purpose pins and remapping some of them to use the second UART would break existing users. Suggested-by: László ÁSHIN <laszlo@ashin.hu> Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> --- Changes since v1: comment about UART1 node. arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts | 12 ++++++++++++ 1 file changed, 12 insertions(+)