[PATCH 16/16] arm64: dts: marvell: armada-3720-espressobin: fill UART nodes
From: Gregory CLEMENT <hidden>
Date: 2017-10-06 13:01:18
Also in:
linux-devicetree, linux-gpio, linux-serial
Possibly related (same subject, not in this thread)
- 2017-10-13 · Re: [PATCH 16/16] arm64: dts: marvell: armada-3720-espressobin: fill UART nodes · Miquel RAYNAL <hidden>
- 2017-10-12 · Re: [PATCH 16/16] arm64: dts: marvell: armada-3720-espressobin: fill UART nodes · Gregory CLEMENT <hidden>
- 2017-10-09 · Re: [PATCH 16/16] arm64: dts: marvell: armada-3720-espressobin: fill UART nodes · Miquel RAYNAL <hidden>
- 2017-10-06 · Re: [PATCH 16/16] arm64: dts: marvell: armada-3720-espressobin: fill UART nodes · Thomas Petazzoni <hidden>
- 2017-10-06 · [PATCH 16/16] arm64: dts: marvell: armada-3720-espressobin: fill UART nodes · Miquel Raynal <hidden>
Hi Miquel, On ven., oct. 06 2017, Miquel Raynal [off-list ref] wrote:
quoted hunk
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: L?szl? ?SHIN <redacted> Signed-off-by: Miquel Raynal <redacted> --- arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts | 8 ++++++++ 1 file changed, 8 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..c05b274ab1a9 100644 --- a/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts +++ b/arch/arm64/boot/dts/marvell/armada-3720-espressobin.dts@@ -98,9 +98,17 @@ /* Exported on the micro USB connector J5 through an FTDI */ &uart0 { + pinctrl-names = "default"; + pinctrl-0 = <&uart1_pins>; status = "okay"; }; +/* + * Enabling the second UART on J17 (pins 24,26) is just a matter of copying the + * uart1 node from armada-3720-db.dts with one difference: it works with 1.8V + * TTL levels.
This difference is not related to the device tree. So I would write: /* * To enable the second UART on J17 (pins 24,26) refer to the uart1 * node from armada-3720-db.dts. * Note that TX and RX signal are the ones coming directly from the SoC: * 1.8V TTL. */ Thanks, Gregory
+ */
+
/* J7 */
&usb3 {
status = "okay";
--
2.11.0-- Gregory Clement, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com