[PATCH v2] ARM: dts: Add am335x-pocketbeagle
Jason Kridner
jkridner at gmail.com
Mon Apr 16 15:27:49 PDT 2018
> On Apr 16, 2018, at 6:08 PM, Robert Nelson <robertcnelson at gmail.com> wrote:
>
> PocketBeagle is an ultra-tiny-yet-complete open-source USB-key-fob computer.
>
> This board can be indentified by the BPxx value after A335BNLT (BBB)
> in the at24 eeprom:
> BPxx [aa 55 33 ee 41 33 33 35 42 4e 4c 54 42 50 30 30 |.U3.A335BNLTBP00|]
The EEPROM value isn’t right. We made it PBGL instead of using BNLT.
>
> http://beagleboard.org/pocket
> https://github.com/beagleboard/pocketbeagle
>
> Signed-off-by: Robert Nelson <robertcnelson at gmail.com>
> CC: Tony Lindgren <tony at atomide.com>
> CC: Jason Kridner <jkridner at beagleboard.org>
> CC: Drew Fustini <drew at beagleboard.org>
> CC: Peter Robinson <pbrobinson at redhat.com>
> ---
> Changes in v2:
> - Use SPDX tags.
> - Use eeprom at 50, remove repeated node and fix and remove '_' to fix node_name_chars_strict Warning
> - Fix: PocketBeagle Name in Subject (not PocketBeagle Blue)
> - Fix: leds remove '_' to fix node_name_chars_strict warning
> - Fix: node_name_chars_strict pinmux_*_pins label's.
> ---
> arch/arm/boot/dts/Makefile | 1 +
> arch/arm/boot/dts/am335x-osd335x-common.dtsi | 124 ++++++++++
> arch/arm/boot/dts/am335x-pocketbeagle.dts | 237 +++++++++++++++++++
> 3 files changed, 362 insertions(+)
> create mode 100644 arch/arm/boot/dts/am335x-osd335x-common.dtsi
> create mode 100644 arch/arm/boot/dts/am335x-pocketbeagle.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 7e2424957809..5a09ff15743b 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -688,6 +688,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \
> am335x-pdu001.dtb \
> am335x-pepper.dtb \
> am335x-phycore-rdk.dtb \
> + am335x-pocketbeagle.dtb \
> am335x-shc.dtb \
> am335x-sbc-t335.dtb \
> am335x-sl50.dtb \
> diff --git a/arch/arm/boot/dts/am335x-osd335x-common.dtsi b/arch/arm/boot/dts/am335x-osd335x-common.dtsi
> new file mode 100644
> index 000000000000..d2150d207b7a
> --- /dev/null
> +++ b/arch/arm/boot/dts/am335x-osd335x-common.dtsi
> @@ -0,0 +1,124 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Robert Nelson <robertcnelson at gmail.com>
> + */
> +
> +/ {
> + cpus {
> + cpu at 0 {
> + cpu0-supply = <&dcdc2_reg>;
> + };
> + };
> +
> + memory at 80000000 {
> + device_type = "memory";
> + reg = <0x80000000 0x20000000>; /* 512 MB */
> + };
> +};
> +
> +&cpu0_opp_table {
> + /*
> + * Octavo Systems:
> + * The EFUSE_SMA register is not programmed for any of the AM335x wafers
> + * we get and we are not programming them during our production test.
> + * Therefore, from a DEVICE_ID revision point of view, the silicon looks
> + * like it is Revision 2.1. However, from an EFUSE_SMA point of view for
> + * the HW OPP table, the silicon looks like it is Revision 1.0 (ie the
> + * EFUSE_SMA register reads as all zeros).
> + */
> + oppnitro-1000000000 {
> + opp-supported-hw = <0x06 0x0100>;
> + };
> +};
> +
> +&am33xx_pinmux {
> + i2c0_pins: pinmux-i2c0-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x988, PIN_INPUT_PULLUP | MUX_MODE0) /* (C17) I2C0_SDA.I2C0_SDA */
> + AM33XX_IOPAD(0x98c, PIN_INPUT_PULLUP | MUX_MODE0) /* (C16) I2C0_SCL.I2C0_SCL */
> + >;
> + };
> +};
> +
> +&i2c0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&i2c0_pins>;
> +
> + status = "okay";
> + clock-frequency = <400000>;
> +
> + tps: tps at 24 {
> + reg = <0x24>;
> + };
> +};
> +
> +/include/ "tps65217.dtsi"
> +
> +&tps {
> + interrupts = <7>; /* NMI */
> + interrupt-parent = <&intc>;
> +
> + ti,pmic-shutdown-controller;
> +
> + pwrbutton {
> + interrupts = <2>;
> + status = "okay";
> + };
> +
> + regulators {
> + dcdc1_reg: regulator at 0 {
> + regulator-name = "vdds_dpr";
> + regulator-always-on;
> + };
> +
> + dcdc2_reg: regulator at 1 {
> + /* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
> + regulator-name = "vdd_mpu";
> + regulator-min-microvolt = <925000>;
> + regulator-max-microvolt = <1351500>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + dcdc3_reg: regulator at 2 {
> + /* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
> + regulator-name = "vdd_core";
> + regulator-min-microvolt = <925000>;
> + regulator-max-microvolt = <1150000>;
> + regulator-boot-on;
> + regulator-always-on;
> + };
> +
> + ldo1_reg: regulator at 3 {
> + regulator-name = "vio,vrtc,vdds";
> + regulator-always-on;
> + };
> +
> + ldo2_reg: regulator at 4 {
> + regulator-name = "vdd_3v3aux";
> + regulator-always-on;
> + };
> +
> + ldo3_reg: regulator at 5 {
> + regulator-name = "vdd_1v8";
> + regulator-min-microvolt = <1800000>;
> + regulator-max-microvolt = <1800000>;
> + regulator-always-on;
> + };
> +
> + ldo4_reg: regulator at 6 {
> + regulator-name = "vdd_3v3a";
> + regulator-always-on;
> + };
> + };
> +};
> +
> +&aes {
> + status = "okay";
> +};
> +
> +&sham {
> + status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/am335x-pocketbeagle.dts b/arch/arm/boot/dts/am335x-pocketbeagle.dts
> new file mode 100644
> index 000000000000..62fe5cab9fae
> --- /dev/null
> +++ b/arch/arm/boot/dts/am335x-pocketbeagle.dts
> @@ -0,0 +1,237 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Robert Nelson <robertcnelson at gmail.com>
> + */
> +/dts-v1/;
> +
> +#include "am33xx.dtsi"
> +#include "am335x-osd335x-common.dtsi"
> +
> +/ {
> + model = "TI AM335x PocketBeagle";
> + compatible = "ti,am335x-pocketbeagle", "ti,am335x-bone", "ti,am33xx";
> +
> + chosen {
> + stdout-path = &uart0;
> + };
> +
> + leds {
> + pinctrl-names = "default";
> + pinctrl-0 = <&usr_leds_pins>;
> +
> + compatible = "gpio-leds";
> +
> + usr0 {
> + label = "beaglebone:green:usr0";
> + gpios = <&gpio1 21 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "heartbeat";
> + default-state = "off";
> + };
> +
> + usr1 {
> + label = "beaglebone:green:usr1";
> + gpios = <&gpio1 22 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "mmc0";
> + default-state = "off";
> + };
> +
> + usr2 {
> + label = "beaglebone:green:usr2";
> + gpios = <&gpio1 23 GPIO_ACTIVE_HIGH>;
> + linux,default-trigger = "cpu0";
> + default-state = "off";
> + };
> +
> + usr3 {
> + label = "beaglebone:green:usr3";
> + gpios = <&gpio1 24 GPIO_ACTIVE_HIGH>;
> + default-state = "off";
> + };
> + };
> +
> + vmmcsd_fixed: fixedregulator0 {
> + compatible = "regulator-fixed";
> + regulator-name = "vmmcsd_fixed";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> +};
> +
> +&am33xx_pinmux {
> + i2c2_pins: pinmux-i2c2-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x97c, PIN_INPUT_PULLUP | MUX_MODE3) /* (D17) uart1_rtsn.I2C2_SCL */
> + AM33XX_IOPAD(0x978, PIN_INPUT_PULLUP | MUX_MODE3) /* (D18) uart1_ctsn.I2C2_SDA */
> + >;
> + };
> +
> + ehrpwm0_pins: pinmux-ehrpwm0-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x990, PIN_OUTPUT_PULLDOWN | MUX_MODE1) /* (A13) mcasp0_aclkx.ehrpwm0A */
> + >;
> + };
> +
> + ehrpwm1_pins: pinmux-ehrpwm1-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x848, PIN_OUTPUT_PULLDOWN | MUX_MODE6) /* (U14) gpmc_a2.ehrpwm1A */
> + >;
> + };
> +
> + mmc0_pins: pinmux-mmc0-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x960, PIN_INPUT | MUX_MODE7) /* (C15) spi0_cs1.gpio0[6] */
> + AM33XX_IOPAD(0x8fc, PIN_INPUT_PULLUP | MUX_MODE0) /* (G16) mmc0_dat0.mmc0_dat0 */
> + AM33XX_IOPAD(0x8f8, PIN_INPUT_PULLUP | MUX_MODE0) /* (G15) mmc0_dat1.mmc0_dat1 */
> + AM33XX_IOPAD(0x8f4, PIN_INPUT_PULLUP | MUX_MODE0) /* (F18) mmc0_dat2.mmc0_dat2 */
> + AM33XX_IOPAD(0x8f0, PIN_INPUT_PULLUP | MUX_MODE0) /* (F17) mmc0_dat3.mmc0_dat3 */
> + AM33XX_IOPAD(0x904, PIN_INPUT_PULLUP | MUX_MODE0) /* (G18) mmc0_cmd.mmc0_cmd */
> + AM33XX_IOPAD(0x900, PIN_INPUT_PULLUP | MUX_MODE0) /* (G17) mmc0_clk.mmc0_clk */
> + AM33XX_IOPAD(0x9a0, PIN_INPUT | MUX_MODE4) /* (B12) mcasp0_aclkr.mmc0_sdwp */
> + >;
> + };
> +
> + spi0_pins: pinmux-spi0-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x950, PIN_INPUT_PULLUP | MUX_MODE0) /* (A17) spi0_sclk.spi0_sclk */
> + AM33XX_IOPAD(0x954, PIN_INPUT_PULLUP | MUX_MODE0) /* (B17) spi0_d0.spi0_d0 */
> + AM33XX_IOPAD(0x958, PIN_INPUT_PULLUP | MUX_MODE0) /* (B16) spi0_d1.spi0_d1 */
> + AM33XX_IOPAD(0x95c, PIN_INPUT_PULLUP | MUX_MODE0) /* (A16) spi0_cs0.spi0_cs0 */
> + >;
> + };
> +
> + spi1_pins: pinmux-spi1-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x964, PIN_INPUT_PULLUP | MUX_MODE4) /* (C18) eCAP0_in_PWM0_out.spi1_sclk */
> + AM33XX_IOPAD(0x968, PIN_INPUT_PULLUP | MUX_MODE4) /* (E18) uart0_ctsn.spi1_d0 */
> + AM33XX_IOPAD(0x96c, PIN_INPUT_PULLUP | MUX_MODE4) /* (E17) uart0_rtsn.spi1_d1 */
> + AM33XX_IOPAD(0x9b0, PIN_INPUT_PULLUP | MUX_MODE4) /* (A15) xdma_event_intr0.spi1_cs1 */
> + >;
> + };
> +
> + usr_leds_pins: pinmux-usr-leds-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x854, PIN_OUTPUT | MUX_MODE7) /* (V15) gpmc_a5.gpio1[21] - USR_LED_0 */
> + AM33XX_IOPAD(0x858, PIN_OUTPUT | MUX_MODE7) /* (U15) gpmc_a6.gpio1[22] - USR_LED_1 */
> + AM33XX_IOPAD(0x85c, PIN_OUTPUT | MUX_MODE7) /* (T15) gpmc_a7.gpio1[23] - USR_LED_2 */
> + AM33XX_IOPAD(0x860, PIN_OUTPUT | MUX_MODE7) /* (V16) gpmc_a8.gpio1[24] - USR_LED_3 */
> + >;
> + };
> +
> + uart0_pins: pinmux-uart0-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x970, PIN_INPUT_PULLUP | MUX_MODE0) /* (E15) uart0_rxd.uart0_rxd */
> + AM33XX_IOPAD(0x974, PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* (E16) uart0_txd.uart0_txd */
> + >;
> + };
> +
> + uart4_pins: pinmux-uart4-pins {
> + pinctrl-single,pins = <
> + AM33XX_IOPAD(0x870, PIN_INPUT_PULLUP | MUX_MODE6) /* (T17) gpmc_wait0.uart4_rxd */
> + AM33XX_IOPAD(0x874, PIN_OUTPUT_PULLDOWN | MUX_MODE6) /* (U17) gpmc_wpn.uart4_txd */
> + >;
> + };
> +};
> +
> +&epwmss0 {
> + status = "okay";
> +};
> +
> +&ehrpwm0 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&ehrpwm0_pins>;
> +};
> +
> +&epwmss1 {
> + status = "okay";
> +};
> +
> +&ehrpwm1 {
> + status = "okay";
> + pinctrl-names = "default";
> + pinctrl-0 = <&ehrpwm1_pins>;
> +};
> +
> +&i2c0 {
> + eeprom: eeprom at 50 {
> + compatible = "atmel,24c256";
> + reg = <0x50>;
> + };
> +};
> +
> +&i2c2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&i2c2_pins>;
> +
> + status = "okay";
> + clock-frequency = <400000>;
> +};
> +
> +&mmc1 {
> + status = "okay";
> + vmmc-supply = <&vmmcsd_fixed>;
> + bus-width = <4>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&mmc0_pins>;
> + cd-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
> +};
> +
> +&rtc {
> + system-power-controller;
> +};
> +
> +&tscadc {
> + status = "okay";
> + adc {
> + ti,adc-channels = <0 1 2 3 4 5 6 7>;
> + ti,chan-step-avg = <16 16 16 16 16 16 16 16>;
> + ti,chan-step-opendelay = <0x98 0x98 0x98 0x98 0x98 0x98 0x98 0x98>;
> + ti,chan-step-sampledelay = <0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0>;
> + };
> +};
> +
> +&uart0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart0_pins>;
> +
> + status = "okay";
> +};
> +
> +&uart4 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&uart4_pins>;
> +
> + status = "okay";
> +};
> +
> +&usb {
> + status = "okay";
> +};
> +
> +&usb_ctrl_mod {
> + status = "okay";
> +};
> +
> +&usb0_phy {
> + status = "okay";
> +};
> +
> +&usb0 {
> + status = "okay";
> + dr_mode = "otg";
> +};
> +
> +&usb1_phy {
> + status = "okay";
> +};
> +
> +&usb1 {
> + status = "okay";
> + dr_mode = "host";
> +};
> +
> +&cppi41dma {
> + status = "okay";
> +};
Is there anything preventing the PRU and GPIO pins from being defined? I guess the GPIO pins might not be exposed through SYSFS due to lack of upstream drivers, but could the pinmux at least be set?
> --
> 2.17.0
>
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