diff options
| author | Steffen Hemer <s.hemer@phytec.de> | 2024-07-30 11:23:52 +0200 |
|---|---|---|
| committer | Kevin Hilman <khilman@baylibre.com> | 2024-07-30 15:19:13 -0700 |
| commit | 65dcab697039c5d0e420cc9c4cc2fee1a4febda4 (patch) | |
| tree | 314a43210476688a12a7778eccc5ab332b113cdc /arch/arm/boot/dts/ti/omap | |
| parent | cf399f182c865a74a9c61c3572b628018c8fb9e0 (diff) | |
ARM: dts: ti: omap: am335x-regor: Fix RS485 settings
RTS pin seems to have inverted behavior on am335x, other than expected
with default "rs485-rts-active-high" (instead of low on idle, high on send,
it is the opposite). Transceiver datasheet also suggests a pulldown.
Add includes to pin definitions that are used.
Signed-off-by: Steffen Hemer <s.hemer@phytec.de>
Signed-off-by: Dominik Haller <d.haller@phytec.de>
Link: https://lore.kernel.org/r/20240730092353.10209-1-d.haller@phytec.de
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Diffstat (limited to 'arch/arm/boot/dts/ti/omap')
| -rw-r--r-- | arch/arm/boot/dts/ti/omap/am335x-regor.dtsi | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/ti/omap/am335x-regor.dtsi b/arch/arm/boot/dts/ti/omap/am335x-regor.dtsi index 625db3bcd365..287d209a0ea9 100644 --- a/arch/arm/boot/dts/ti/omap/am335x-regor.dtsi +++ b/arch/arm/boot/dts/ti/omap/am335x-regor.dtsi @@ -5,6 +5,9 @@ * */ +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/pinctrl/am33xx.h> + / { model = "Phytec AM335x phyBOARD-REGOR"; compatible = "phytec,am335x-regor", "phytec,am335x-phycore-som", "ti,am33xx"; @@ -188,7 +191,7 @@ pinctrl-single,pins = < AM33XX_PADCONF(AM335X_PIN_UART1_RXD, PIN_INPUT_PULLUP, MUX_MODE0) AM33XX_PADCONF(AM335X_PIN_UART1_TXD, PIN_OUTPUT_PULLDOWN, MUX_MODE0) - AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_OUTPUT_PULLUP, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_UART1_RTSN, PIN_OUTPUT_PULLDOWN, MUX_MODE0) >; }; }; @@ -198,4 +201,9 @@ pinctrl-0 = <&uart1_rs485_pins>; status = "okay"; linux,rs485-enabled-at-boot-time; + /* + * un-intuitively, yet with the default (active-high), + * am335x RTS is high on idle and gets low on active ! + */ + rs485-rts-active-low; }; |