Hi, Adding Linus W to Cc, would be good to get some comments on this. * Drew Fustini <drew@xxxxxxxxxxxxxxx> [200508 09:58]: > Add gpio-line-names properties to the gpio controller nodes. > BeagleBone boards have P8 and P9 headers [0] which expose many the > AM3358 SoC balls to stacking expansion boards called "capes", or to > other external connections like jumper wires to a breadboard. > > Many of the P8/P9 header pins can muxed to a gpio line. The > gpio-line-names describe which P8/P9 pin that line goes to and the > default mux for that P8/P9 pin. Some lines are not routed to the > P8/P9 headers, but instead are dedicated to some functionality such as > status LEDs. The line name will indicate this. Some line names are > left empty as the corresponding AM3358 balls are not connected. > > The goal is to make it easier for a user viewing the output of gpioinfo > to determine which P8/P9 pin is connected to a line. The output of > gpioinfo on a BeagleBone Black will now look like this: > > gpiochip0 - 32 lines: > line 0: "ethernet" unused input active-high > line 1: "ethernet" unused input active-high > line 2: "P9_22 spi0_sclk" unused input active-high > line 3: "P9_21 spi0_d0" unused input active-high > line 4: "P9_18 spi0_d1" unused input active-high > line 5: "P9_17 spi0_cs0" unused input active-high > line 6: "sd card" "cd" input active-low [used] > line 7: "P9_42A ecappwm0" unused input active-high > line 8: "P8_35 hdmi" unused input active-high > line 9: "P8_33 hdmi" unused input active-high > line 10: "P8_31 hdmi" unused input active-high > line 11: "P8_32 hdmi" unused input active-high > line 12: "P9_20 i2c2_sda" unused input active-high > line 13: "P9_19 i2c2_scl" unused input active-high > line 14: "P9_26 uart1_rxd" unused input active-high > line 15: "P9_24 uart1_txd" unused input active-high > line 16: "ethernet" unused input active-high > line 17: "ethernet" unused input active-high > line 18: "usb" unused input active-high > line 19: "hdmi" unused input active-high > line 20: "P9_41B gpio" unused input active-high > line 21: "ethernet" unused input active-high > line 22: "P8_19 ehrpwm2a" unused input active-high > line 23: "P8_13 ehrpwm2b" unused input active-high > line 24: unnamed unused input active-high > line 25: unnamed unused input active-high > line 26: "P8_14 gpio" unused input active-high > line 27: "P8_17 gpio" unused input active-high > line 28: "ethernet" unused input active-high > line 29: "ethernet" unused input active-high > line 30: "P9_11 uart4_rxd" unused input active-high > line 31: "P9_13 uart4_txd" unused input active-high > gpiochip1 - 32 lines: > line 0: "P8_25 emmc" unused input active-high > line 1: "emmc" unused input active-high > line 2: "P8_5 emmc" unused input active-high > line 3: "P8_6 emmc" unused input active-high > line 4: "P8_23 emmc" unused input active-high > line 5: "P8_22 emmc" unused input active-high > line 6: "P8_3 emmc" unused input active-high > line 7: "P8_4 emmc" unused input active-high > line 8: unnamed unused input active-high > line 9: unnamed unused input active-high > line 10: unnamed unused input active-high > line 11: unnamed unused input active-high > line 12: "P8_12 gpio" unused input active-high > line 13: "P8_11 gpio" unused input active-high > line 14: "P8_16 gpio" unused input active-high > line 15: "P8_15 gpio" unused input active-high > line 16: "P9_15A gpio" unused input active-high > line 17: "P9_23 gpio" unused input active-high > line 18: "P9_14 ehrpwm1a" unused input active-high > line 19: "P9_16 ehrpwm1b" unused input active-high > line 20: "emmc" unused input active-high > line 21: "usr0 led" "beaglebone:green:heart" output active-high [used] > line 22: "usr1 led" "beaglebone:green:mmc0" output active-high [used] > line 23: "usr2 led" "beaglebone:green:usr2" output active-high [used] > line 24: "usr3 led" "beaglebone:green:usr3" output active-high [used] > line 25: "hdmi" "interrupt" input active-high [used] > line 26: "usb" unused input active-high > line 27: "hdmi audio" "enable" output active-high [used] > line 28: "P9_12 gpio" unused input active-high > line 29: "P8_26 gpio" unused input active-high > line 30: "P8_21 emmc" unused input active-high > line 31: "P8_20 emmc" unused input active-high > gpiochip2 - 32 lines: > line 0: "P9_15B gpio" unused input active-high > line 1: "P8_18 gpio" unused input active-high > line 2: "P8_7 gpio" unused input active-high > line 3: "P8_8 gpio" unused input active-high > line 4: "P8_10 gpio" unused input active-high > line 5: "P8_9 gpio" unused input active-high > line 6: "P8_45 hdmi" unused input active-high > line 7: "P8_46 hdmi" unused input active-high > line 8: "P8_43 hdmi" unused input active-high > line 9: "P8_44 hdmi" unused input active-high > line 10: "P8_41 hdmi" unused input active-high > line 11: "P8_42 hdmi" unused input active-high > line 12: "P8_39 hdmi" unused input active-high > line 13: "P8_40 hdmi" unused input active-high > line 14: "P8_37 hdmi" unused input active-high > line 15: "P8_38 hdmi" unused input active-high > line 16: "P8_36 hdmi" unused input active-high > line 17: "P8_34 hdmi" unused input active-high > line 18: "ethernet" unused input active-high > line 19: "ethernet" unused input active-high > line 20: "ethernet" unused input active-high > line 21: "ethernet" unused input active-high > line 22: "P8_27 hdmi" unused input active-high > line 23: "P8_29 hdmi" unused input active-high > line 24: "P8_28 hdmi" unused input active-high > line 25: "P8_30 hdmi" unused input active-high > line 26: "emmc" unused input active-high > line 27: "emmc" unused input active-high > line 28: "emmc" unused input active-high > line 29: "emmc" unused input active-high > line 30: "emmc" unused input active-high > line 31: "emmc" unused input active-high > gpiochip3 - 32 lines: > line 0: "ethernet" unused input active-high > line 1: "ethernet" unused input active-high > line 2: "ethernet" unused input active-high > line 3: "ethernet" unused input active-high > line 4: "ethernet" unused input active-high > line 5: "i2c0" unused input active-high > line 6: "i2c0" unused input active-high > line 7: "emu" unused input active-high > line 8: "emu" unused input active-high > line 9: "ethernet" unused input active-high > line 10: "ethernet" unused input active-high > line 11: unnamed unused input active-high > line 12: unnamed unused input active-high > line 13: "usb" unused input active-high > line 14: "P9_31 spi1_sclk" unused input active-high > line 15: "P9_29 spi1_d0" unused input active-high > line 16: "P9_30 spi1_d1" unused input active-high > line 17: "P9_28 spi1_cs0" unused input active-high > line 18: "P9_42B ecappwm0" unused input active-high > line 19: "P9_27 gpio" unused input active-high > line 20: "P9_41A gpio" unused input active-high > line 21: "P9_25 gpio" unused input active-high > line 22: unnamed unused input active-high > line 23: unnamed unused input active-high > line 24: unnamed unused input active-high > line 25: unnamed unused input active-high > line 26: unnamed unused input active-high > line 27: unnamed unused input active-high > line 28: unnamed unused input active-high > line 29: unnamed unused input active-high > line 30: unnamed unused input active-high > line 31: unnamed unused input active-high > > [0] https://beagleboard.org/Support/bone101 > [1] https://beagleboard.org/capes > > Reviewed-by: Jason Kridner <jason@xxxxxxxxxxxxxxx> > Reviewed-by: Robert Nelson <robertcnelson@xxxxxxxxx> > Signed-off-by: Drew Fustini <drew@xxxxxxxxxxxxxxx> > --- > arch/arm/boot/dts/am335x-bone-common.dtsi | 144 ++++++++++++++++++++++ > 1 file changed, 144 insertions(+) > > diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi > index 6c9187bc0f17..defdf68edb58 100644 > --- a/arch/arm/boot/dts/am335x-bone-common.dtsi > +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi > @@ -397,3 +397,147 @@ > clocks = <&clk_32768_ck>, <&clk_24mhz_clkctrl AM3_CLK_24MHZ_CLKDIV32K_CLKCTRL 0>; > clock-names = "ext-clk", "int-clk"; > }; > + > +&gpio0 { > + gpio-line-names = > + "ethernet", > + "ethernet", > + "P9_22 spi0_sclk", > + "P9_21 spi0_d0", > + "P9_18 spi0_d1", > + "P9_17 spi0_cs0", > + "sd card", > + "P9_42A ecappwm0", > + "P8_35 hdmi", > + "P8_33 hdmi", > + "P8_31 hdmi", > + "P8_32 hdmi", > + "P9_20 i2c2_sda", > + "P9_19 i2c2_scl", > + "P9_26 uart1_rxd", > + "P9_24 uart1_txd", > + "ethernet", > + "ethernet", > + "usb", > + "hdmi", > + "P9_41B gpio", > + "ethernet", > + "P8_19 ehrpwm2a", > + "P8_13 ehrpwm2b", > + "", > + "", > + "P8_14 gpio", > + "P8_17 gpio", > + "ethernet", > + "ethernet", > + "P9_11 uart4_rxd", > + "P9_13 uart4_txd"; > +}; > + > +&gpio1 { > + gpio-line-names = > + "P8_25 emmc", > + "emmc", > + "P8_5 emmc", > + "P8_6 emmc", > + "P8_23 emmc", > + "P8_22 emmc", > + "P8_3 emmc", > + "P8_4 emmc", > + "", > + "", > + "", > + "", > + "P8_12 gpio", > + "P8_11 gpio", > + "P8_16 gpio", > + "P8_15 gpio", > + "P9_15A gpio", > + "P9_23 gpio", > + "P9_14 ehrpwm1a", > + "P9_16 ehrpwm1b", > + "emmc", > + "usr0 led", > + "usr1 led", > + "usr2 led", > + "usr3 led", > + "hdmi", > + "usb", > + "hdmi audio", > + "P9_12 gpio", > + "P8_26 gpio", > + "P8_21 emmc", > + "P8_20 emmc"; > +}; > + > +&gpio2 { > + gpio-line-names = > + "P9_15B gpio", > + "P8_18 gpio", > + "P8_7 gpio", > + "P8_8 gpio", > + "P8_10 gpio", > + "P8_9 gpio", > + "P8_45 hdmi", > + "P8_46 hdmi", > + "P8_43 hdmi", > + "P8_44 hdmi", > + "P8_41 hdmi", > + "P8_42 hdmi", > + "P8_39 hdmi", > + "P8_40 hdmi", > + "P8_37 hdmi", > + "P8_38 hdmi", > + "P8_36 hdmi", > + "P8_34 hdmi", > + "ethernet", > + "ethernet", > + "ethernet", > + "ethernet", > + "P8_27 hdmi", > + "P8_29 hdmi", > + "P8_28 hdmi", > + "P8_30 hdmi", > + "emmc", > + "emmc", > + "emmc", > + "emmc", > + "emmc", > + "emmc"; > +}; > + > +&gpio3 { > + gpio-line-names = > + "ethernet", > + "ethernet", > + "ethernet", > + "ethernet", > + "ethernet", > + "i2c0", > + "i2c0", > + "emu", > + "emu", > + "ethernet", > + "ethernet", > + "", > + "", > + "usb", > + "P9_31 spi1_sclk", > + "P9_29 spi1_d0", > + "P9_30 spi1_d1", > + "P9_28 spi1_cs0", > + "P9_42B ecappwm0", > + "P9_27 gpio", > + "P9_41A gpio", > + "P9_25 gpio", > + "", > + "", > + "", > + "", > + "", > + "", > + "", > + "", > + "", > + ""; > +}; > -- > 2.20.1 >
