编译正点原子的出厂 Linux 内核源码，为后面移植linux做准备。研究对象如下：
1)、linux内核镜像文件“uImage”
路径为“arch/arm/boot”；
2)、设备树文件“stm32mp157d-atk.dtb”
路径为“arch/arm/boot/dts”
3)、默认配置文件“stm32mp1_atk_defconfig”
路径为“arch/arm/configs”
1、创建“alientek_linux”目录，用来存放正点原子的linux源码
打开终端
输入“ls回车”
输入“cd linux/回车”，切换到“linux”目录
输入“ls回车”，列出“linux”目录下的文件和文件夹
输入“cd atk-mp1/回车” ，切换到“atk-mp1”目录
输入“ls回车”，列出“atk-mp1”目录下的文件和文件夹
输入“mkdir linux/回车”，在“/linux/atk-mp1/”目录下创建“linux”目录；
输入“cd linux/回车” ，切换到“linux”目录
输入“mkdir alientek_linux/回车”，在“/linux/atk-mp1/linux”目录下创建“alientek_linux”目录；
输入“ls回车”，列出“/linux/atk-mp1/linux”目录下的文件和文件夹
2、将“linux-5.4.31-gca8f6cddb-v1.7.tar.bz2”压缩包，使用FileZilla把它拷贝到“/linux/atk-mp1/linux/alientek_linux”目录下。该文件位于“01、程序源码\01、正点原子Linux出厂系统源码”目录中。
3、输入“cd alientek_linux/回车”，切换到“alientek_linux”目录
输入“ls回车”，列出“alientek_linux”目录下的文件和文件夹
输入“tar -vxjf linux-5.4.31-gca8f6cddb-v1.7.tar.bz2回车”，解压
4、输入“ls回车”，列出“alientek_linux”目录下的文件和文件夹
输入“rm linux-5.4.31-gca8f6cddb-v1.7.tar.bz2回车”，删除压缩包
5、创建脚本文件“stm32mp157d_atk.sh”
输入“vi stm32mp157d_atk.sh回车”，新建一个脚本文件“stm32mp157d_atk.sh”
如果在第1次编译时，脚本文件如下：
#!/bin/sh
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf-
#清除工程，删除“.config”文件，执行1次即可，以后就不要再执行了。
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf-
#设置为默认配置，执行1次即可，以后就不需要执行该语句了。
#“stm32mp1_atk_defconfig”位于“arch/arm/configs”目录下；
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf-
#打开图形化配置界面
make ARCH=arm CROSS_COMPILE=arm-none-linux-gnueabihf-
#编译镜像文件和设备树，linux内核在DDR中的加载地址为0XC2000040，-j8表示采用8线程编译
6、按“ESC键”，输入“:wq回车”，保存文件
输入“chmod 777 stm32mp157d_atk.sh回车”,给脚本文件赋予可执行权限
7、输入“./stm32mp157d_atk.sh回车”，执行编译；
编译完成后，文件如下：
注意：
为什么uboot里面的uImage的地址是0xC2000000，编译linux的时候，指定的的LOADADDR是0xC2000040?
因为linux的uImage最前面的Ox40个字节是头部信息。
编译得到“arch/arm/boot/uImage”
设备树：“arch/arm/boot/dts/stm32mp157d-atk.dtb”
“stm32mp1_atk_defconfig”位于“arch/arm/configs”目录下；
8、查询是否生成了uImage文件
输入“ls回车”
输入“cd arch/回车”
输入“ls回车”
输入“cd arm/回车”
输入“ls回车”
输入“cd boot/回车”
输入“ls回车”
9、查询是否生成了“stm32mp157d-atk.dtb”文件
输入“cd dts/回车”
输入“ls stm32mp157*回车”
10、将“stm32mp157d-atk.dtb”拷贝到“/home/zgq/linux/tftpboot/”目录下
打开第2个终端，查看tftpboot是不是存在
输入“ls回车”
输入“cd linux/回车”，切换到“linux”目录
输入“ls回车”，列出“linux”目录下的文件和文件夹
输入“cd tftpboot/回车”，切换到“tftpboot”目录
输入“ls回车”，列出“tftpboot”目录下的文件和文件夹
11、回到第1个打开的终端，输入“cp stm32mp157d-atk.dtb /home/zgq/linux/tftpboot/ -f回车”，执行文件拷贝；
12、输入“cd ..回车”，回到“boot”目录下
输入“ls回车”，列出“boot”目录下的文件和文件夹
输入“cp uImage /home/zgq/linux/tftpboot/ -f回车”，执行文件拷贝；
13、回到第2个打开的终端，输入“ls -l回车”
原有的“文件”被替换了。
按复位键，启动。
注意：将开发板通过网线连接到路由器，同时开启虚拟机。
14、使用VSCode创建工程
1)、点击虚拟机上的VSCode,然后点击“文件”，点击“打开文件夹”，选择“alientek_linux”
2)、点击“确定”
3)、点击“文件”，点击“将工作区另存为...”,在名称右边的文本框里输入“alientek_linux”，见下图：
4)、点击“保存”，得到下图：
5)、linux设备树头文件stm32mp157d-atk.dtsi源码，将来移植linux可以参考使用，见下图：
linux设备树头文件stm32mp157d-atk.dtsi源码如下：
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
/*
* Copyright (C) STMicroelectronics 2019 - All Rights Reserved
* Author: Alexandre Torgue <alexandre.torgue@st.com> for STMicroelectronics.
*/
#include "stm32mp157-m4-srm.dtsi"
#include "stm32mp157-m4-srm-pinctrl.dtsi"
#include <dt-bindings/mfd/st,stpmic1.h>
#include <dt-bindings/usb/pd.h>
/ {
memory@c0000000 {
device_type = "memory";
reg = <0xc0000000 0x40000000>;
};
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;
mcuram2: mcuram2@10000000 {
compatible = "shared-dma-pool";
reg = <0x10000000 0x40000>;
no-map;
};
vdev0vring0: vdev0vring0@10040000 {
compatible = "shared-dma-pool";
reg = <0x10040000 0x1000>;
no-map;
};
vdev0vring1: vdev0vring1@10041000 {
compatible = "shared-dma-pool";
reg = <0x10041000 0x1000>;
no-map;
};
vdev0buffer: vdev0buffer@10042000 {
compatible = "shared-dma-pool";
reg = <0x10042000 0x4000>;
no-map;
};
mcuram: mcuram@30000000 {
compatible = "shared-dma-pool";
reg = <0x30000000 0x40000>;
no-map;
};
retram: retram@38000000 {
compatible = "shared-dma-pool";
reg = <0x38000000 0x10000>;
no-map;
};
};
clocks {
clk_ext_camera: clk-ext-camera {
#clock-cells = <0>;
compatible = "fixed-clock";
clock-frequency = <24000000>;
};
};
dht11 {
compatible = "alientek,dht11";
dht11-gpio = <&gpiof 2 GPIO_ACTIVE_LOW>;
status = "okay";
};
ds18b20 {
compatible = "alientek,ds18b20";
ds18b20-gpio = <&gpiof 2 GPIO_ACTIVE_LOW>;
status = "okay";
};
gpio-keys {
compatible = "gpio-keys";
autorepeat;
key0 {
label = "USER-KEY0";
linux,code = <114>;
gpios = <&gpiog 3 GPIO_ACTIVE_LOW>;
gpio-key,wakeup;
};
key1 {
label = "USER-KEY1";
linux,code = <115>;
gpios = <&gpioh 7 GPIO_ACTIVE_LOW>;
gpio-key,wakeup;
};
};
lcd_id {
select_id = <0>;
};
leds {
compatible = "gpio-leds";
led1 {
label = "sys-led";
gpios = <&gpioi 0 GPIO_ACTIVE_LOW>;
linux,default-trigger = "heartbeat";
default-state = "on";
status = "okay";
};
led2 {
label = "user-led";
gpios = <&gpiof 3 GPIO_ACTIVE_LOW>;
linux,default-trigger = "none";
default-state = "on";
status = "okay";
};
beep {
label = "beep";
gpios = <&gpioc 7 GPIO_ACTIVE_LOW>;
default-state = "off";
};
};
panel_backlight: panel-backlight {
compatible = "pwm-backlight";
pwms = <&pwm4 1 5000000>;
brightness-levels = <0 4 8 16 32 64 128 255>;
power-supply = <&v3v3>;
default-brightness-level = <7>;
status = "okay";
};
usb_phy_tuning: usb-phy-tuning {
st,hs-dc-level = <2>;
st,fs-rftime-tuning;
st,hs-rftime-reduction;
st,hs-current-trim = <15>;
st,hs-impedance-trim = <1>;
st,squelch-level = <3>;
st,hs-rx-offset = <2>;
st,no-lsfs-sc;
};
v3v3: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "v3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-boot-on;
};
vddcore: buck1 {
compatible = "regulator-fixed";
regulator-name = "vddcore";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1350000>;
regulator-always-on;
regulator-boot-on;
};
vdd_usb: regulator-vdd-usb {
compatible = "regulator-fixed";
regulator-name = "vdd_usb";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-boot-on;
};
vdd: regulator-vdd {
compatible = "regulator-fixed";
regulator-name = "vdd";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-boot-on;
};
vdda: ldo1 {
compatible = "regulator-fixed";
regulator-name = "vdda";
regulator-min-microvolt = <2900000>;
regulator-max-microvolt = <2900000>;
regulator-always-on;
regulator-boot-on;
};
v1v8_audio: regulator-v1v8-audio {
compatible = "regulator-fixed";
regulator-name = "v1v8_audio";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
regulator-boot-on;
};
v2v8: regulator-v2v8 {
compatible = "regulator-fixed";
regulator-name = "v2v8";
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
regulator-always-on;
regulator-over-current-protection;
};
vin: regulator-vin {
compatible = "regulator-fixed";
regulator-name = "vin";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
regulator-boot-on;
};
v3v3_hdmi: regulator-v3v3-hdmi {
compatible = "regulator-fixed";
regulator-name = "v3v3_hdmi";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
regulator-boot-on;
};
v1v2_hdmi: regulator-v1v2-hdmi {
compatible = "regulator-fixed";
regulator-name = "v1v2_hdmi";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
regulator-always-on;
regulator-boot-on;
};
spdif_out: spdif-out {
#sound-dai-cells = <0>;
compatible = "linux,spdif-dit";
status = "okay";
spdif_out_port: port {
spdif_out_endpoint: endpoint {
remote-endpoint = <&sai4a_endpoint>;
};
};
};
spdif_in: spdif-in {
#sound-dai-cells = <0>;
compatible = "linux,spdif-dir";
status = "okay";
spdif_in_port: port {
spdif_in_endpoint: endpoint {
remote-endpoint = <&spdifrx_endpoint>;
};
};
};
#if 1
sound: sound {
compatible = "audio-graph-card";
label = "STM32MP1-DK";
routing =
"Playback" , "MCLK",
"Capture" , "MCLK",
"MICL" , "Mic Bias";
dais = <&sai2a_port &sai2b_port &i2s2_port &spdifrx_port>;
status = "okay";
};
#else
sound: sound {
compatible = "audio-graph-card";
label = "STM32MP1-DK";
widgets =
"Microphone", "Mic Jack",
"Line", "Line In",
"Line", "Line Out",
"Speaker", "Speaker",
"Headphone", "Headphone Jack";
routing =
"Headphone Jack", "HP_L",
"Headphone Jack", "HP_R",
"Speaker", "SPK_LP",
"Speaker", "SPK_LN",
"Speaker", "SPK_RP",
"Speaker", "SPK_RN",
"LINPUT1", "Mic Jack",
"LINPUT3", "Mic Jack",
"RINPUT1", "Mic Jack",
"RINPUT2", "Mic Jack";
dais = <&sai2a_port &sai2b_port &sai4a_port &spdifrx_port &i2s2_port>;
status = "okay";
};
#endif
};
&pinctrl {
dac_ch1_pins_a: dac-ch1 {
pins {
pinmux = <STM32_PINMUX('A', 4, ANALOG)>; /* configure 'PA4' as ANALOG */
};
};
adc1_in6_pins_b: adc1-in6 {
pins {
pinmux = <STM32_PINMUX('A', 5, ANALOG)>;
};
};
dcmi_pins_b: dcmi-1 {
pins {
pinmux = <STM32_PINMUX('H', 8, AF13)>,/* DCMI_HSYNC */
<STM32_PINMUX('B', 7, AF13)>,/* DCMI_VSYNC */
<STM32_PINMUX('A', 6, AF13)>,/* DCMI_PIXCLK */
<STM32_PINMUX('H', 9, AF13)>,/* DCMI_D0 */
<STM32_PINMUX('H', 10, AF13)>,/* DCMI_D1 */
<STM32_PINMUX('H', 11, AF13)>,/* DCMI_D2 */
<STM32_PINMUX('H', 12, AF13)>,/* DCMI_D3 */
<STM32_PINMUX('H', 14, AF13)>,/* DCMI_D4 */
<STM32_PINMUX('I', 4, AF13)>,/* DCMI_D5 */
<STM32_PINMUX('B', 8, AF13)>,/* DCMI_D6 */
<STM32_PINMUX('E', 6, AF13)>;/* DCMI_D7 */
bias-disable;
};
};
dcmi_sleep_pins_b: dcmi-sleep-1 {
pins {
pinmux = <STM32_PINMUX('H', 8, ANALOG)>,/* DCMI_HSYNC */
<STM32_PINMUX('B', 7, ANALOG)>,/* DCMI_VSYNC */
<STM32_PINMUX('A', 6, ANALOG)>,/* DCMI_PIXCLK */
<STM32_PINMUX('H', 9, ANALOG)>,/* DCMI_D0 */
<STM32_PINMUX('H', 10, ANALOG)>,/* DCMI_D1 */
<STM32_PINMUX('H', 11, ANALOG)>,/* DCMI_D2 */
<STM32_PINMUX('H', 12, ANALOG)>,/* DCMI_D3 */
<STM32_PINMUX('H', 14, ANALOG)>,/* DCMI_D4 */
<STM32_PINMUX('I', 4, ANALOG)>,/* DCMI_D5 */
<STM32_PINMUX('B', 8, ANALOG)>,/* DCMI_D6 */
<STM32_PINMUX('E', 6, ANALOG)>;/* DCMI_D7 */
};
};
stusb1600_pins_b: stusb1600-0 {
pins {
pinmux = <STM32_PINMUX('G', 2, ANALOG)>;
bias-pull-up;
};
};
uart7_pins_b: uart7-1 {
pins1 {
pinmux = <STM32_PINMUX('F', 7, AF7)>, /* UART7_TX */
<STM32_PINMUX('F', 8, AF7)>; /* UART7_RTS */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins2 {
pinmux = <STM32_PINMUX('F', 6, AF7)>, /* UART7_RX */
<STM32_PINMUX('F', 9, AF7)>; /* UART7_CTS_NSS */
bias-disable;
};
};
uart7_idle_pins_b: uart7-idle-1 {
pins1 {
pinmux = <STM32_PINMUX('F', 7, ANALOG)>, /* UART7_TX */
<STM32_PINMUX('F', 8, ANALOG)>, /* UART7_RTS */
<STM32_PINMUX('F', 9, ANALOG)>; /* UART7_CTS_NSS */
};
pins2 {
pinmux = <STM32_PINMUX('F', 6, AF7)>; /* UART7_RX */
bias-disable;
};
};
uart7_sleep_pins_b: uart7-sleep-1 {
pins {
pinmux = <STM32_PINMUX('F', 7, ANALOG)>, /* UART7_TX */
<STM32_PINMUX('F', 8, ANALOG)>, /* UART7_RTS */
<STM32_PINMUX('F', 6, ANALOG)>, /* UART7_RX */
<STM32_PINMUX('F', 9, ANALOG)>; /* UART7_CTS_NSS */
};
};
usart3_pins_c: uart3-0 {
pins1 {
pinmux = <STM32_PINMUX('D', 8, AF7)>; /* UART5_TX */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins2 {
pinmux = <STM32_PINMUX('D', 9, AF7)>; /* UART5_RX */
bias-disable;
};
};
usart3_idle_pins_c: uart3-idle-0 {
pins1 {
pinmux = <STM32_PINMUX('D', 8, ANALOG)>; /* UART5_TX */
};
pins2 {
pinmux = <STM32_PINMUX('D', 9, AF7)>; /* UART5_RX */
bias-disable;
};
};
usart3_sleep_pins_c: uart3-sleep-0 {
pins {
pinmux = <STM32_PINMUX('D', 8, ANALOG)>, /* UART5_TX */
<STM32_PINMUX('D', 9, ANALOG)>; /* UART5_RX */
};
};
uart5_pins_a: uart5-0 {
pins1 {
pinmux = <STM32_PINMUX('B', 13, AF14)>; /* UART5_TX */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins2 {
pinmux = <STM32_PINMUX('B', 12, AF14)>; /* UART5_RX */
bias-disable;
};
};
uart5_idle_pins_a: uart5-idle-0 {
pins1 {
pinmux = <STM32_PINMUX('B', 13, ANALOG)>; /* UART5_TX */
};
pins2 {
pinmux = <STM32_PINMUX('B', 12, AF14)>; /* UART5_RX */
bias-disable;
};
};
uart5_sleep_pins_a: uart5-sleep-0 {
pins {
pinmux = <STM32_PINMUX('B', 13, ANALOG)>, /* UART5_TX */
<STM32_PINMUX('B', 12, ANALOG)>; /* UART5_RX */
};
};
i2s2_pins_b: i2s2-2 {
pins {
pinmux = <STM32_PINMUX('C', 3, AF5)>, /* I2S2_SDO */
<STM32_PINMUX('B', 9, AF5)>, /* I2S2_WS */
<STM32_PINMUX('B', 10, AF5)>; /* I2S2_CK */
slew-rate = <1>;
drive-push-pull;
bias-disable;
};
};
i2s2_pins_sleep_b: i2s2-3 {
pins {
pinmux = <STM32_PINMUX('C', 3, ANALOG)>, /* I2S2_SDO */
<STM32_PINMUX('B', 9, ANALOG)>, /* I2S2_WS */
<STM32_PINMUX('B', 10, ANALOG)>; /* I2S2_CK */
};
};
};
&adc {
/* ADC1 & ADC2 common resources */
pinctrl-names = "default";
pinctrl-0 = <&adc1_in6_pins_b>;
vdd-supply = <&vdd>;
vdda-supply = <&vdd>;
vref-supply = <&vdd>;
status = "okay";
adc1: adc@0 {
/* private resources for ADC1 */
st,adc-channels = <19>;
st,min-sample-time-nsecs = <10000>;
status = "okay";
};
};
&m_can1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&m_can1_pins_a>;
pinctrl-1 = <&m_can1_sleep_pins_a>;
status = "okay";
};
&cec {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&cec_pins_b>;
pinctrl-1 = <&cec_pins_sleep_b>;
status = "okay";
};
&crc1 {
status = "okay";
};
&dac {
pinctrl-names = "default";
pinctrl-0 = <&dac_ch1_pins_a>; /* Use PA4 and PA5 pin as ANALOG */
vref-supply = <&v3v3>; /* Example to use VREFBUF (It needs to be enabled as well) */
status = "okay"; /* Enable the DAC block */
dac1: dac@1 {
status = "okay"; /* Enable DAC1 */
};
};
&dcmi {
status = "okay";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&dcmi_pins_b>;
pinctrl-1 = <&dcmi_sleep_pins_b>;
port {
dcmi_0: endpoint {
remote-endpoint = <&ov5640_0>;
bus-width = <8>;
hsync-active = <0>;
vsync-active = <0>;
pclk-sample = <1>;
pclk-max-frequency = <77000000>;
};
};
};
&dma1 {
sram = <&dma_pool>;
};
&dma2 {
sram = <&dma_pool>;
};
&dts {
status = "okay";
};
ðernet0 {
status = "okay";
pinctrl-0 = <ðernet0_rgmii_pins_a>;
pinctrl-1 = <ðernet0_rgmii_pins_sleep_a>;
pinctrl-names = "default", "sleep";
phy-mode = "rgmii-id";
max-speed = <1000>;
phy-handle = <&phy0>;
mdio0 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "snps,dwmac-mdio";
phy0: ethernet-phy@0 {
reg = <0>;
};
};
};
&gpu {
contiguous-area = <&gpu_reserved>;
status = "okay";
};
&hash1 {
status = "okay";
};
&ipcc {
status = "okay";
};
&i2c1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c1_pins_b>;
pinctrl-1 = <&i2c1_pins_sleep_b>;
i2c-scl-rising-time-ns = <100>;
i2c-scl-falling-time-ns = <7>;
status = "okay";
/delete-property/dmas;
/delete-property/dma-names;
stusb1600@28 {
compatible = "st,stusb1600";
reg = <0x28>;
interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
interrupt-parent = <&gpiog>;
pinctrl-names = "default";
pinctrl-0 = <&stusb1600_pins_b>;
status = "okay";
vdd-supply = <&vin>;
connector {
compatible = "usb-c-connector";
label = "USB-C";
power-role = "dual";
power-opmode = "default";
port {
con_usbotg_hs_ep: endpoint {
remote-endpoint = <&usbotg_hs_ep>;
};
};
};
};
typec: fusb302@22 {
compatible = "fcs,fusb302","fairchild,fusb302";
reg = <0x22>;
pinctrl-names = "default";
pinctrl-0 = <&stusb1600_pins_b>;
int-n-gpios = <&gpiog 2 GPIO_ACTIVE_HIGH>;
vbus-5v-gpios = <&gpioz 6 GPIO_ACTIVE_HIGH>;
status = "okay";
connector {
compatible = "usb-c-connector";
label = "USB-C";
power-role = "dual";
power-opmode = "default";
try-power-role = "sink";
source-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)>;
sink-pdos = <PDO_FIXED(5000, 3000, PDO_FIXED_USB_COMM)
PDO_VAR(3000, 12000, 3000)
PDO_PPS_APDO(3000, 11000, 3000)>;
op-sink-microwatt = <10000000>;
};
};
};
&i2c2 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c2_pins_a>;
pinctrl-1 = <&i2c2_pins_sleep_a>;
i2c-scl-rising-time-ns = <185>;
i2c-scl-falling-time-ns = <20>;
status = "okay";
/delete-property/dmas;
/delete-property/dma-names;
hdmi: hdmi-transmitter@39 {
compatible = "sil,sii9022";
reg = <0x39>;
iovcc-supply = <&v3v3_hdmi>;
cvcc12-supply = <&v1v2_hdmi>;
reset-gpios = <&gpioa 3 GPIO_ACTIVE_LOW>;
interrupts = <6 IRQ_TYPE_EDGE_FALLING>;
interrupt-parent = <&gpioh>;
#sound-dai-cells = <1>;
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
sii9022_in: endpoint {
remote-endpoint = <<dc_ep0_out>;
};
};
port@3 {
reg = <3>;
sii9022_tx_endpoint: endpoint {
remote-endpoint = <&i2s2_endpoint>;
};
};
};
};
};
&i2c4 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c4_pins_a>;
pinctrl-1 = <&i2c4_pins_sleep_a>;
i2c-scl-rising-time-ns = <185>;
i2c-scl-falling-time-ns = <20>;
status = "okay";
/delete-property/dmas;
/delete-property/dma-names;
pcf8563@51{
compatible = "nxp,pcf8563";
irq_gpio = <&gpioi 3 IRQ_TYPE_EDGE_FALLING>;
reg = <0x51>;
};
#if 0
wm8960: wm8960@1a {
compatible = "wlf,wm8960";
reg = <0x1a>;
#sound-dai-cells = <0>;
status = "okay";
//wlf,shared-lrclk;
wlf,capless;
clocks = <&sai2a>;
clock-names = "MCLK1";
ports {
#address-cells = <1>;
#size-cells = <0>;
wm8960_tx_port: port@0 {
reg = <0>;
wm8960_tx_endpoint: endpoint {
remote-endpoint = <&sai2a_endpoint>;
};
};
wm8960_rx_port: port@1 {
reg = <1>;
wm8960_rx_endpoint: endpoint {
remote-endpoint = <&sai2b_endpoint>;
};
};
};
};
#else
cs42l51: cs42l51@4a {
compatible = "cirrus,cs42l51";
reg = <0x4a>;
#sound-dai-cells = <0>;
VL-supply = <&v3v3>;
VD-supply = <&v1v8_audio>;
VA-supply = <&v1v8_audio>;
VAHP-supply = <&v1v8_audio>;
reset-gpios = <&gpioz 7 GPIO_ACTIVE_LOW>;
clocks = <&sai2a>;
clock-names = "MCLK";
status = "okay";
cs42l51_port: port {
#address-cells = <1>;
#size-cells = <0>;
cs42l51_tx_endpoint: endpoint@0 {
reg = <0>;
remote-endpoint = <&sai2a_endpoint>;
frame-master;
bitclock-master;
};
cs42l51_rx_endpoint: endpoint@1 {
reg = <1>;
remote-endpoint = <&sai2b_endpoint>;
frame-master;
bitclock-master;
};
};
};
#endif
};
&i2c5 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c5_pins_a>;
pinctrl-1 = <&i2c5_pins_sleep_a>;
i2c-scl-rising-time-ns = <100>;
i2c-scl-falling-time-ns = <7>;
status = "okay";
/delete-property/dmas;
/delete-property/dma-names;
ap3216c@1e {
compatible = "LiteOn,ap3216c";
reg = <0x1e>;
};
ov5640: camera@3c {
compatible = "ovti,ov5640";
reg = <0x3c>;
clocks = <&clk_ext_camera>;
clock-names = "xclk";
DOVDD-supply = <&v2v8>;
powerdown-gpios = <&gpioe 11 (GPIO_ACTIVE_HIGH | GPIO_PUSH_PULL)>;
reset-gpios = <&gpioe 1 (GPIO_ACTIVE_LOW | GPIO_PUSH_PULL)>;
rotation = <180>;
status = "okay";
port {
ov5640_0: endpoint {
remote-endpoint = <&dcmi_0>;
bus-width = <8>;
data-shift = <2>;
hsync-active = <0>;
vsync-active = <0>;
pclk-sample = <1>;
pclk-max-frequency = <77000000>;
};
};
};
};
&i2s2 {
clocks = <&rcc SPI2>, <&rcc SPI2_K>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
clock-names = "pclk", "i2sclk", "x8k", "x11k";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2s2_pins_a>;
pinctrl-1 = <&i2s2_pins_sleep_a>;
status = "okay";
i2s2_port: port {
i2s2_endpoint: endpoint {
remote-endpoint = <&sii9022_tx_endpoint>;
format = "i2s";
mclk-fs = <256>;
};
};
};
&iwdg2 {
timeout-sec = <32>;
status = "okay";
};
<dc {
pinctrl-names = "default", "sleep";
pinctrl-0 = <<dc_pins_b>;
pinctrl-1 = <<dc_pins_sleep_b>;
status = "okay";
port {
#address-cells = <1>;
#size-cells = <0>;
ltdc_ep0_out: endpoint@0 {
reg = <0>;
remote-endpoint = <&sii9022_in>;
};
};
};
&m4_rproc {
memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>,
<&vdev0vring1>, <&vdev0buffer>;
mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>;
mbox-names = "vq0", "vq1", "shutdown";
interrupt-parent = <&exti>;
interrupts = <68 1>;
wakeup-source;
status = "okay";
};
&rng1 {
status = "okay";
};
&sai2 {
clocks = <&rcc SAI2>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
clock-names = "pclk", "x8k", "x11k";
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sai2a_pins_a>, <&sai2b_pins_b>;
pinctrl-1 = <&sai2a_sleep_pins_a>, <&sai2b_sleep_pins_b>;
status = "okay";
sai2a: audio-controller@4400b004 {
#clock-cells = <0>;
dma-names = "tx";
clocks = <&rcc SAI2_K>;
clock-names = "sai_ck";
status = "okay";
sai2a_port: port {
sai2a_endpoint: endpoint {
remote-endpoint = <&cs42l51_tx_endpoint>;
format = "i2s";
mclk-fs = <256>;
dai-tdm-slot-num = <2>;
dai-tdm-slot-width = <32>;
};
};
};
sai2b: audio-controller@4400b024 {
dma-names = "rx";
st,sync = <&sai2a 2>;
clocks = <&rcc SAI2_K>, <&sai2a>;
clock-names = "sai_ck", "MCLK";
status = "okay";
sai2b_port: port {
sai2b_endpoint: endpoint {
remote-endpoint = <&cs42l51_rx_endpoint>;
format = "i2s";
mclk-fs = <256>;
dai-tdm-slot-num = <2>;
dai-tdm-slot-width = <32>;
};
};
};
};
&sai4 {
clocks = <&rcc SAI4>, <&rcc PLL3_Q>, <&rcc PLL3_R>;
clock-names = "pclk", "x8k", "x11k";
status = "okay";
sai4a: audio-controller@50027004 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&sai4a_pins_a>;
pinctrl-1 = <&sai4a_sleep_pins_a>;
dma-names = "tx";
clocks = <&rcc SAI4_K>;
clock-names = "sai_ck";
st,iec60958;
status = "okay";
sai4a_port: port {
sai4a_endpoint: endpoint {
remote-endpoint = <&spdif_out_endpoint>;
};
};
};
};
&sdmmc1 {
pinctrl-names = "default", "opendrain", "sleep";
pinctrl-0 = <&sdmmc1_b4_pins_a>;
pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
broken-cd;
st,neg-edge;
bus-width = <4>;
vmmc-supply = <&v3v3>;
status = "okay";
};
&sdmmc2 {
pinctrl-names = "default", "opendrain", "sleep";
pinctrl-0 = <&sdmmc2_b4_pins_a>;
pinctrl-1 = <&sdmmc2_b4_od_pins_a>;
pinctrl-2 = <&sdmmc2_b4_sleep_pins_a>;
non-removable;
st,neg-edge;
bus-width = <8>;
vmmc-supply = <&v3v3>;
keep-power-in-suspend;
status = "okay";
};
&sdmmc3 {
arm,primecell-periphid = <0x10153180>;
pinctrl-names = "default", "opendrain", "sleep";
pinctrl-0 = <&sdmmc3_b4_pins_a>;
pinctrl-1 = <&sdmmc3_b4_od_pins_a>;
pinctrl-2 = <&sdmmc3_b4_sleep_pins_a>;
non-removable;
st,neg-edge;
bus-width = <4>;
vmmc-supply = <&v3v3>;
status = "okay";
keep-power-in-suspend;
};
&spdifrx {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&spdifrx_pins_a>;
pinctrl-1 = <&spdifrx_pins_a>;
status = "okay";
spdifrx_port: port {
spdifrx_endpoint: endpoint {
remote-endpoint = <&spdif_in_endpoint>;
};
};
};
&sram {
dma_pool: dma_pool@0 {
reg = <0x50000 0x10000>;
pool;
};
};
&spi1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&spi1_pins_a>;
pinctrl-1 = <&spi1_sleep_pins_a>;
cs-gpios = <&gpioz 3 GPIO_ACTIVE_LOW>;
status = "okay";
spidev: icm20608@0 {
compatible = "alientek,icm20608";
reg = <0>; /* CS #0 */
spi-max-frequency = <8000000>;
};
};
&timers4 {
status = "okay";
/* spare dmas for other usage */
/delete-property/dmas;
/delete-property/dma-names;
pwm4: pwm {
pinctrl-0 = <&pwm4_pins_b>;
pinctrl-1 = <&pwm4_sleep_pins_b>;
pinctrl-names = "default", "sleep";
#pwm-cells = <2>;
status = "okay";
};
};
&usart3 {
pinctrl-names = "default", "sleep", "idle";
pinctrl-0 = <&usart3_pins_c>;
pinctrl-1 = <&usart3_sleep_pins_c>;
pinctrl-2 = <&usart3_idle_pins_c>;
/delete-property/dmas;
/delete-property/dma-names;
status = "okay";
};
&uart4 {
pinctrl-names = "default", "sleep", "idle", "no_console_suspend";
pinctrl-0 = <&uart4_pins_a>;
pinctrl-1 = <&uart4_sleep_pins_a>;
pinctrl-2 = <&uart4_idle_pins_a>;
pinctrl-3 = <&uart4_pins_a>;
/delete-property/dmas;
/delete-property/dma-names;
status = "okay";
};
&uart5 {
pinctrl-names = "default", "sleep", "idle";
pinctrl-0 = <&uart5_pins_a>;
pinctrl-1 = <&uart5_sleep_pins_a>;
pinctrl-2 = <&uart5_idle_pins_a>;
/delete-property/dmas;
/delete-property/dma-names;
status = "okay";
};
&uart7 {
pinctrl-names = "default", "sleep", "idle";
pinctrl-0 = <&uart7_pins_b>;
pinctrl-1 = <&uart7_sleep_pins_b>;
pinctrl-2 = <&uart7_idle_pins_b>;
/delete-property/dmas;
/delete-property/dma-names;
st,hw-flow-ctrl;
status = "okay";
};
&usbh_ehci {
phys = <&usbphyc_port0>;
status = "okay";
};
&usbotg_hs {
phys = <&usbphyc_port1 0>;
phy-names = "usb2-phy";
usb-role-switch;
status = "okay";
port {
usbotg_hs_ep: endpoint {
remote-endpoint = <&con_usbotg_hs_ep>;
};
};
};
&usbphyc {
status = "okay";
};
&usbphyc_port0 {
phy-supply = <&vdd_usb>;
st,phy-tuning = <&usb_phy_tuning>;
};
&usbphyc_port1 {
phy-supply = <&vdd_usb>;
st,phy-tuning = <&usb_phy_tuning>;
};至此，编译正点原子的出厂Linux内核源码完成。
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