ARM: dts: am335x-baltos-ir5221: use dedicated RTS/CTS signals
PATCH 1/1 ARM: dts: am335x-baltos-ir5221: use dedicated RTS/CTS signals
From: Yegor Yefremov <[email protected]>
Before "tty: Add software emulated RS485 support for 8250" patch Baltos devices relied on MCTRL_GPIO framework to handle both modem signals and RS485 mode.
With emulated RS485 support for 8250 we can now use these pins as dedicated RTS/CTS signals taking advantage of hardware flow control etc. when operating in RS232 mode.
--- arch/arm/boot/dts/am335x-baltos-ir5221.dts | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)
arch/arm/boot/dts/am335x-baltos-ir5221.dts +4 -8
@@ -109,8 +109,8 @@ pinctrl-single,pins = < AM33XX_IOPAD(0x980, PIN_INPUT | MUX_MODE0) /* uart1_rxd */ AM33XX_IOPAD(0x984, PIN_INPUT | MUX_MODE0) /* uart1_txd */ - AM33XX_IOPAD(0x978, PIN_INPUT_PULLDOWN | MUX_MODE7) /* uart1_ctsn, INPUT | MODE0 */ - AM33XX_IOPAD(0x97c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* uart1_rtsn, OUTPUT | MODE0 */ + AM33XX_IOPAD(0x978, PIN_INPUT_PULLDOWN | MUX_MODE0) /* uart1_ctsn */ + AM33XX_IOPAD(0x97c, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart1_rtsn */ AM33XX_IOPAD(0x8e0, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* lcd_vsync.gpio2[22] DTR */ AM33XX_IOPAD(0x8e4, PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_hsync.gpio2[23] DSR */ AM33XX_IOPAD(0x8e8, PIN_INPUT_PULLDOWN | MUX_MODE7) /* lcd_pclk.gpio2[24] DCD */
@@ -122,8 +122,8 @@ pinctrl-single,pins = < AM33XX_IOPAD(0x950, PIN_INPUT | MUX_MODE1) /* spi0_sclk.uart2_rxd_mux3 */ AM33XX_IOPAD(0x954, PIN_OUTPUT | MUX_MODE1) /* spi0_d0.uart2_txd_mux3 */ - AM33XX_IOPAD(0x988, PIN_INPUT_PULLDOWN | MUX_MODE7) /* i2c0_sda.uart2_ctsn_mux0 */ - AM33XX_IOPAD(0x98c, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* i2c0_scl.uart2_rtsn_mux0 */ + AM33XX_IOPAD(0x988, PIN_INPUT_PULLDOWN | MUX_MODE2) /* i2c0_sda.uart2_ctsn_mux0 */ + AM33XX_IOPAD(0x98c, PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* i2c0_scl.uart2_rtsn_mux0 */ AM33XX_IOPAD(0x830, PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad12.gpio1[12] DTR */ AM33XX_IOPAD(0x834, PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad13.gpio1[13] DSR */ AM33XX_IOPAD(0x838, PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_ad14.gpio1[14] DCD */
@@ -287,8 +287,6 @@ dsr-gpios = <&gpio2 23 GPIO_ACTIVE_LOW>; dcd-gpios = <&gpio2 24 GPIO_ACTIVE_LOW>; rng-gpios = <&gpio2 25 GPIO_ACTIVE_LOW>; - cts-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>; - rts-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>; status = "okay"; };
@@ -300,8 +298,6 @@ dsr-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>; dcd-gpios = <&gpio1 14 GPIO_ACTIVE_LOW>; rng-gpios = <&gpio1 15 GPIO_ACTIVE_LOW>; - cts-gpios = <&gpio3 5 GPIO_ACTIVE_LOW>; - rts-gpios = <&gpio3 6 GPIO_ACTIVE_LOW>; status = "okay"; };
Signature · 1 line
2.1.4
PATCH 1/1 ARM: dts: am335x-baltos-ir5221: use dedicated RTS/CTS signals
Quoted 8 lines · yegorslists at googlemail.com
From: Yegor Yefremov <[email protected]>
Before "tty: Add software emulated RS485 support for 8250" patch Baltos devices relied on
MCTRL_GPIOframework to handle both modem signals and RS485 mode.With emulated RS485 support for 8250 we can now use these pins as dedicated RTS/CTS signals taking advantage of hardware flow control etc. when operating in RS232 mode.
Applying into omap-for-v4.7/dt thanks.
Tony