am335x dts文件根节点之外的节点

bin lian

Prodigy 141 points

各位好：

初搞设备树，有些问题不是很明白。

我查看am335x-evm.dts文件

/ {
model = "TI AM335x EVM";
compatible = "ti,am335x-evm", "ti,am33xx";

cpus {
cpu@0 {
cpu0-supply = <&vdd1_reg>;
};

.............省略..............

};

这个整个的根节点，然后在根节点后面还有很多其他的节点如下：

&am33xx_pinmux {
pinctrl-names = "default";
pinctrl-0 = <&volume_keys_s0 &clkout2_pin>;

matrix_keypad_default: matrix_keypad_default {
pinctrl-single,pins = <
0x54 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a5.gpio1_21 */
0x58 (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpmc_a6.gpio1_22 */
0x64 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a9.gpio1_25 */
0x68 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a10.gpio1_26 */
0x6c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a11.gpio1_27 */
>;
};

matrix_keypad_sleep: matrix_keypad_sleep {
pinctrl-single,pins = <
0x54 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a5.gpio1_21 */
0x58 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* gpmc_a6.gpio1_22 */
>;
};

volume_keys_s0: volume_keys_s0 {
pinctrl-single,pins = <
0x150 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* spi0_sclk.gpio0_2 */
0x154 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* spi0_d0.gpio0_3 */
>;
};

i2c0_pins: pinmux_i2c0_pins {
pinctrl-single,pins = <
0x188 (PIN_INPUT_PULLUP | MUX_MODE0) /* i2c0_sda.i2c0_sda */
0x18c (PIN_INPUT_PULLUP | MUX_MODE0) /* i2c0_scl.i2c0_scl */
>;
};

i2c1_pins_default: pinmux_i2c1_pins {
pinctrl-single,pins = <
0x158 (PIN_INPUT_PULLUP | MUX_MODE2) /* spi0_d1.i2c1_sda */
0x15c (PIN_INPUT_PULLUP | MUX_MODE2) /* spi0_cs0.i2c1_scl */
>;
};

i2c1_pins_sleep: i2c1_pins_sleep {
pinctrl-single,pins = <
0x158 (PIN_INPUT_PULLDOWN | MUX_MODE7) /* spi0_d1.i2c1_sda */
0x15c (PIN_INPUT_PULLDOWN | MUX_MODE7) /* spi0_cs0.i2c1_scl */
>;
};

uart0_pins: pinmux_uart0_pins {
pinctrl-single,pins = <
0x170 (PIN_INPUT_PULLUP | MUX_MODE0) /* uart0_rxd.uart0_rxd */
0x174 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart0_txd.uart0_txd */
>;
};

uart1_pins_default: pinmux_uart1_pins_default {
pinctrl-single,pins = <
0x178 (PIN_INPUT | MUX_MODE0) /* uart1_ctsn.uart1_ctsn */
0x17C (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart1_rtsn.uart1_rtsn */
0x180 (PIN_INPUT_PULLUP | MUX_MODE0) /* uart1_rxd.uart1_rxd */
0x184 (PIN_OUTPUT_PULLDOWN | MUX_MODE0) /* uart1_txd.uart1_txd */
>;
};

uart1_pins_sleep: pinmux_uart1_pins_sleep {
pinctrl-single,pins = <
0x178 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x17C (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x180 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x184 (PIN_INPUT_PULLDOWN | MUX_MODE7)
>;
};

clkout2_pin: pinmux_clkout2_pin {
pinctrl-single,pins = <
0x1b4 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* xdma_event_intr1.clkout2 */
>;
};

nandflash_pins_default: nandflash_pins_default {
pinctrl-single,pins = <
0x0 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad0.gpmc_ad0 */
0x4 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad1.gpmc_ad1 */
0x8 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad2.gpmc_ad2 */
0xc (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad3.gpmc_ad3 */
0x10 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad4.gpmc_ad4 */
0x14 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad5.gpmc_ad5 */
0x18 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad6.gpmc_ad6 */
0x1c (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_ad7.gpmc_ad7 */
0x70 (PIN_INPUT_PULLUP | MUX_MODE0) /* gpmc_wait0.gpmc_wait0 */
0x74 (PIN_INPUT_PULLUP | MUX_MODE7) /* gpmc_wpn.gpio0_30 */
0x7c (PIN_OUTPUT | MUX_MODE0) /* gpmc_csn0.gpmc_csn0 */
0x90 (PIN_OUTPUT | MUX_MODE0) /* gpmc_advn_ale.gpmc_advn_ale */
0x94 (PIN_OUTPUT | MUX_MODE0) /* gpmc_oen_ren.gpmc_oen_ren */
0x98 (PIN_OUTPUT | MUX_MODE0) /* gpmc_wen.gpmc_wen */
0x9c (PIN_OUTPUT | MUX_MODE0) /* gpmc_be0n_cle.gpmc_be0n_cle */
>;
};

nandflash_pins_sleep: nandflash_pins_sleep {
pinctrl-single,pins = <
0x0 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x4 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x8 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0xc (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x10 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x14 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x18 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x1c (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x70 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x74 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x7c (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x90 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x94 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x98 (PIN_INPUT_PULLDOWN | MUX_MODE7)
0x9c (PIN_INPUT_PULLDOWN | MUX_MODE7)
>;
};