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@xxxxxxx>
---
arch/arm64/boot/dts/mediatek/mt7986a-bananapi-bpi-r3.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
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";
};
};
--
2.25.1
