On Tue, Jun 09, 2020 at 04:25:04PM +0200, Drew Fustini wrote: > The BeagleBoard.org PocketBeagle has P1 and P2 headers [0] which expose > many of the TI AM3358 SoC balls to stacking expansion boards called > "capes", or to other external connections like jumper wires connected > to a breadboard. > > Note: the AM3358 die is actually embedded inside of the OSD335x-SM > System-in-Package (SiP) [1] but that is irrelevant to the gpio driver. > > Many of the P1 and P2 header pins can muxed to a GPIO line. The > gpio-line-names describe which P1 or P2 pin that line goes to and the > default mux for that P1 or P2 pin if it is not GPIO. > > Some GPIO lines are named "[NC]" as the corresponding balls are not > routed to anything on the PCB. > > The goal for these names is to make it easier for a user viewing the > output of gpioinfo to determine which P1 or P2 pin is connected to a > GPIO line. The output of gpioinfo on a PocketBeagle would be: > > gpiochip0 - 32 lines: > line 0: "[NC]" unused input active-high > line 1: "[NC]" unused input active-high > line 2: "P1.08 [SPI0_CLK]" unused input active-high > line 3: "P1.10 [SPI0_MISO]" unused input active-high > line 4: "P1.12 [SPI0_MOSI]" unused input active-high > line 5: "P1.06 [SPI0_CS]" unused input active-high > line 6: "[MMC0_CD]" "cd" input active-low [used] > line 7: "P2.29 [SPI1_CLK]" unused input active-high > line 8: "[NC]" unused input active-high > line 9: "[NC]" unused input active-high > line 10: "[NC]" unused input active-high > line 11: "[NC]" unused input active-high > line 12: "P1.26 [I2C2_SDA]" unused input active-high > line 13: "P1.28 [I2C2_SCL]" unused input active-high > line 14: "P2.11 [I2C1_SDA]" unused input active-high > line 15: "P2.09 [I2C1_SCL]" unused input active-high > line 16: "[NC]" unused input active-high > line 17: "[NC]" unused input active-high > line 18: "[NC]" unused input active-high > line 19: "P2.31 [SPI1_CS]" unused input active-high > line 20: "P1.20 [PRU0.16]" unused input active-high > line 21: "[NC]" unused input active-high > line 22: "[NC]" unused input active-high > line 23: "P2.03" unused input active-high > line 24: "[NC]" unused input active-high > line 25: "[NC]" unused input active-high > line 26: "P1.34" unused input active-high > line 27: "P2.19" unused input active-high > line 28: "[NC]" unused input active-high > line 29: "[NC]" unused input active-high > line 30: "P2.05 [UART4_RX]" unused input active-high > line 31: "P2.07 [UART4_TX]" unused input active-high > gpiochip1 - 32 lines: > line 0: "[NC]" unused input active-high > line 1: "[NC]" unused input active-high > line 2: "[NC]" unused input active-high > line 3: "[NC]" unused input active-high > line 4: "[NC]" unused input active-high > line 5: "[NC]" unused input active-high > line 6: "P1.06 [SPI0_CS]" unused input active-high > line 7: "P1.06 [SPI0_CS]" unused input active-high > line 8: "P2.27 [SPI1_MISO]" unused input active-high > line 9: "P2.25 [SPI1_MOSI]" unused input active-high > line 10: "P1.32 [UART0_RX]" unused input active-high > line 11: "P1.30 [UART0_TX]" unused input active-high > line 12: "P2.24" unused input active-high > line 13: "P2.33" unused input active-high > line 14: "P2.22" unused input active-high > line 15: "P2.18" unused input active-high > line 16: "[NC]" unused input active-high > line 17: "[NC]" unused input active-high > line 18: "P2.01 [PWM1A]" unused input active-high > line 19: "[NC]" unused input active-high > line 20: "P2.10" unused input active-high > line 21: "[user led 0]" "beaglebone:green:usr0" output active-high [used] > line 22: "[user led 1]" "beaglebone:green:usr1" output active-high [used] > line 23: "[user led 2]" "beaglebone:green:usr2" output active-high [used] > line 24: "[user led 3]" "beaglebone:green:usr3" output active-high [used] > line 25: "P2.06" unused input active-high > line 26: "P2.04" unused input active-high > line 27: "P2.02" unused input active-high > line 28: "P2.08" unused input active-high > line 29: "[NC]" unused input active-high > line 30: "[NC]" unused input active-high > line 31: "[NC]" unused input active-high > gpiochip2 - 32 lines: > line 0: "[NC]" unused input active-high > line 1: "P2.17" unused input active-high > line 2: "[NC]" unused input active-high > line 3: "[NC]" unused input active-high > line 4: "[NC]" unused input active-high > line 5: "[EEPROM_WP]" unused input active-high > line 6: "[NC]" unused input active-high > line 7: "[NC]" unused input active-high > line 8: "[NC]" unused input active-high > line 9: "[NC]" unused input active-high > line 10: "[NC]" unused input active-high > line 11: "[NC]" unused input active-high > line 12: "[NC]" unused input active-high > line 13: "[NC]" unused input active-high > line 14: "[NC]" unused input active-high > line 15: "[NC]" unused input active-high > line 16: "[NC]" unused input active-high > line 17: "[NC]" unused input active-high > line 18: "[NC]" unused input active-high > line 19: "[NC]" unused input active-high > line 20: "[NC]" unused input active-high > line 21: "[NC]" unused input active-high > line 22: "P2.35 [AIN5]" unused input active-high > line 23: "P1.02 [AIN6]" unused input active-high > line 24: "P1.35 [PRU1.10]" unused input active-high > line 25: "P1.04 [PRU1.11]" unused input active-high > line 26: "[MMC0_DAT3]" unused input active-high > line 27: "[MMC0_DAT2]" unused input active-high > line 28: "[MMC0_DAT1]" unused input active-high > line 29: "[MMC0_DAT0]" unused input active-high > line 30: "[MMC0_CLK]" unused input active-high > line 31: "[MMC0_CMD]" unused input active-high > gpiochip3 - 32 lines: > line 0: "[NC]" unused input active-high > line 1: "[NC]" unused input active-high > line 2: "[NC]" unused input active-high > line 3: "[NC]" unused input active-high > line 4: "[NC]" unused input active-high > line 5: "[I2C0_SDA]" unused input active-high > line 6: "[I2C0_SCL]" unused input active-high > line 7: "[JTAG]" unused input active-high > line 8: "[JTAG]" unused input active-high > line 9: "[NC]" unused input active-high > line 10: "[NC]" unused input active-high > line 11: "[NC]" unused input active-high > line 12: "[NC]" unused input active-high > line 13: "P1.03 [USB1]" unused input active-high > line 14: "P1.36 [PWM0A]" unused input active-high > line 15: "P1.33 [PRU0.1]" unused input active-high > line 16: "P2.32 [PRU0.2]" unused input active-high > line 17: "P2.30 [PRU0.3]" unused input active-high > line 18: "P1.31 [PRU0.4]" unused input active-high > line 19: "P2.34 [PRU0.5]" unused input active-high > line 20: "P2.28 [PRU0.6]" unused input active-high > line 21: "P1.29 [PRU0.7]" unused input active-high > line 22: "[NC]" unused input active-high > line 23: "[NC]" unused input active-high > line 24: "[NC]" unused input active-high > line 25: "[NC]" unused input active-high > line 26: "[NC]" unused input active-high > line 27: "[NC]" unused input active-high > line 28: "[NC]" unused input active-high > line 29: "[NC]" unused input active-high > line 30: "[NC]" unused input active-high > line 31: "[NC]" unused input active-high > > [0] https://github.com/beagleboard/pocketbeagle/wiki/System-Reference-Manual#71_Expansion_Header_Connectors > [1] https://octavosystems.com/app_notes/osd335x-family-pin-assignments/ > > Reviewed-by: Jason Kridner <jason@xxxxxxxxxxxxxxx> > Reviewed-by: Robert Nelson <robertcnelson@xxxxxxxxx> > Signed-off-by: Drew Fustini <drew@xxxxxxxxxxxxxxx> > --- > arch/arm/boot/dts/am335x-pocketbeagle.dts | 144 ++++++++++++++++++++++ > 1 file changed, 144 insertions(+) > > diff --git a/arch/arm/boot/dts/am335x-pocketbeagle.dts b/arch/arm/boot/dts/am335x-pocketbeagle.dts > index 4da719098028..60e5fa2b9156 100644 > --- a/arch/arm/boot/dts/am335x-pocketbeagle.dts > +++ b/arch/arm/boot/dts/am335x-pocketbeagle.dts > @@ -59,6 +59,150 @@ vmmcsd_fixed: fixedregulator0 { > }; > }; > > +&gpio0 { > + gpio-line-names = > + "[NC]", > + "[NC]", > + "P1.08 [SPI0_CLK]", > + "P1.10 [SPI0_MISO]", > + "P1.12 [SPI0_MOSI]", > + "P1.06 [SPI0_CS]", > + "[MMC0_CD]", > + "P2.29 [SPI1_CLK]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "P1.26 [I2C2_SDA]", > + "P1.28 [I2C2_SCL]", > + "P2.11 [I2C1_SDA]", > + "P2.09 [I2C1_SCL]", > + "[NC]", > + "[NC]", > + "[NC]", > + "P2.31 [SPI1_CS]", > + "P1.20 [PRU0.16]", > + "[NC]", > + "[NC]", > + "P2.03", > + "[NC]", > + "[NC]", > + "P1.34", > + "P2.19", > + "[NC]", > + "[NC]", > + "P2.05 [UART4_RX]", > + "P2.07 [UART4_TX]"; > +}; > + > +&gpio1 { > + gpio-line-names = > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "P1.06 [SPI0_CS]", > + "P1.06 [SPI0_CS]", > + "P2.27 [SPI1_MISO]", > + "P2.25 [SPI1_MOSI]", > + "P1.32 [UART0_RX]", > + "P1.30 [UART0_TX]", > + "P2.24", > + "P2.33", > + "P2.22", > + "P2.18", > + "[NC]", > + "[NC]", > + "P2.01 [PWM1A]", > + "[NC]", > + "P2.10", > + "[user led 0]", > + "[user led 1]", > + "[user led 2]", > + "[user led 3]", > + "P2.06", > + "P2.04", > + "P2.02", > + "P2.08", > + "[NC]", > + "[NC]", > + "[NC]"; > +}; > + > +&gpio2 { > + gpio-line-names = > + "[NC]", > + "P2.17", > + "[NC]", > + "[NC]", > + "[NC]", > + "[EEPROM_WP]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "P2.35 [AIN5]", > + "P1.02 [AIN6]", > + "P1.35 [PRU1.10]", > + "P1.04 [PRU1.11]", > + "[MMC0_DAT3]", > + "[MMC0_DAT2]", > + "[MMC0_DAT1]", > + "[MMC0_DAT0]", > + "[MMC0_CLK]", > + "[MMC0_CMD]"; > +}; > + > +&gpio3 { > + gpio-line-names = > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[I2C0_SDA]", > + "[I2C0_SCL]", > + "[JTAG]", > + "[JTAG]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "P1.03 [USB1]", > + "P1.36 [PWM0A]", > + "P1.33 [PRU0.1]", > + "P2.32 [PRU0.2]", > + "P2.30 [PRU0.3]", > + "P1.31 [PRU0.4]", > + "P2.34 [PRU0.5]", > + "P2.28 [PRU0.6]", > + "P1.29 [PRU0.7]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]", > + "[NC]"; > +}; > + > &am33xx_pinmux { > i2c2_pins: pinmux-i2c2-pins { > pinctrl-single,pins = < > -- > 2.25.1 > Tony - does this look ok for 5.9? If so, I might start making other variants like BeagleBone Blue and BeagleBone {Green,Black} Wireless and submit those when ready. thanks, drew
