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[4/4] arm64: dts: mediatek: mt7986: add missing UART1 CTS/RTS pins in BPI-R3

Message ID 20240627075856.2314804-5-leith@bade.nz (mailing list archive)
State New
Headers show
Series fix up pin definitions for BPI-R3 board | expand

Commit Message

Leith Bade June 27, 2024, 7:58 a.m. UTC 
The current definition of the uart1_pins pin group does not include the
CTS and RTS pins that are available on header CON1.

In the public schematic for the BPI-R3 (titled "BPI-R3-MT7986A",
revision "V1.1", sheet 4), the UART1_RTS and UART1_CTS pins are connected
via nets to the connector CON1 (sheet 14) UART0-RTS and UART0-CTS pins.
The datasheet does not show these nets as connected to anything else.

These pins can be configured for either UART1 or as a GPIO, with no other
alternate usage listed in the pinctrl driver. By changing the pin group
definition from uart1_rx_tx to uart1 the additional RTS and CTS pins are
included.

Signed-off-by: Leith Bade <leith@bade.nz>
---
 arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
index 54087001cc8c..48bd1e04963c 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts
@@ -349,7 +349,7 @@  mux {
 	uart1_pins: uart1-pins {
 		mux {
 			function = "uart";
-			groups = "uart1_rx_tx";
+			groups = "uart1";
 		};
 	};