diff options
| author | Andreas Färber <afaerber@suse.de> | 2017-04-18 22:25:38 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@free-electrons.com> | 2017-06-07 16:25:44 +0300 |
| commit | 2273aa169125fd66e47cee2582f7f8ec3cf32544 (patch) | |
| tree | 7172023b6889295cd9ad2068d91a90f9019ae320 /arch | |
| parent | 3b38fded38cff850a3b0ba85e96528ad791dafc5 (diff) | |
| download | linux-2273aa169125fd66e47cee2582f7f8ec3cf32544.tar.xz | |
arm64: dts: allwinner: pine64: Prepare optional UART nodes with pinctrl
Pine64 exposes all A64 UARTs, not just UART0.
Since the pins can be used as GPIO, don't enable the new UART nodes by
default, but prepare the pinctrl settings to aid in activating them via
overlays, i.e., overriding the status property of &uartX nodes.
For UART4 (Euler) the safer route of not including RTS/CTS pins is chosen,
whereas for UART1 (Bluetooth) they are included.
Add the corresponding pinctrl nodes where missing.
Suggested-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts | 29 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 15 |
2 files changed, 44 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts index 02b991df25dc..7c533b6d4ba9 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64.dts @@ -107,12 +107,41 @@ status = "okay"; }; +/* On Exp and Euler connectors */ &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pins_a>; status = "okay"; }; +/* On Wifi/BT connector, with RTS/CTS */ +&uart1 { + pinctrl-names = "default"; + pinctrl-0 = <&uart1_pins>, <&uart1_rts_cts_pins>; + status = "disabled"; +}; + +/* On Pi-2 connector */ +&uart2 { + pinctrl-names = "default"; + pinctrl-0 = <&uart2_pins>; + status = "disabled"; +}; + +/* On Euler connector */ +&uart3 { + pinctrl-names = "default"; + pinctrl-0 = <&uart3_pins>; + status = "disabled"; +}; + +/* On Euler connector, RTS/CTS optional */ +&uart4 { + pinctrl-names = "default"; + pinctrl-0 = <&uart4_pins>; + status = "disabled"; +}; + &usb_otg { dr_mode = "host"; status = "okay"; diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 699afc53301a..90dc4ec79485 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -322,6 +322,21 @@ pins = "PB0", "PB1"; function = "uart2"; }; + + uart3_pins: uart3-pins { + pins = "PD0", "PD1"; + function = "uart3"; + }; + + uart4_pins: uart4-pins { + pins = "PD2", "PD3"; + function = "uart4"; + }; + + uart4_rts_cts_pins: uart4-rts-cts-pins { + pins = "PD4", "PD5"; + function = "uart4"; + }; }; uart0: serial@1c28000 { |