update linux patch, add 4G/NB-IoT and overlays support

guowenxue

2022-06-30 472531a0e14cf3d83d241cf26dbc2ef47a4108d9

update linux patch, add 4G/NB-IoT and overlays support

 bsp/kernel/patch/linux-imx-lf-5.10.52-2.1.0.patch

@@ -1,7 +1,7 @@
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/igkboard.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/igkboard.dts
--- linux-imx/arch/arm/boot/dts/igkboard.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/igkboard.dts    2022-06-13 22:06:43.280918362 +0800
@@ -0,0 +1,694 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/igkboard.dts    2022-06-30 20:52:22.149803784 +0800
@@ -0,0 +1,592 @@
+/*
+ * Device Tree Source for LingYun IGKBoard(IoT Gateway Kit Board)
+ * Based on imx6ul-14x14-evk.dts/imx6ul-14x14-evk.dtsi
@@ -12,7 +12,7 @@
+
+/dts-v1/;
+
+#include "imx6ul.dtsi"
+#include "imx6ull.dtsi"
+
+/ {
+    model = "LingYun IoT System Studio IoT Gateway Board";
@@ -156,6 +156,7 @@
+*/
+};
+
+
+/*+--------------+
+  | Misc Modules |
+  +--------------+*/
@@ -187,6 +188,7 @@
+    pinctrl-0 = <&pinctrl_pwm2>;
+    status = "okay";
+};
+
+
+/*+---------------+
+  | Camera Module |
@@ -255,6 +257,7 @@
+    };
+};
+
+
+/*+--------------+
+  | Audio Module |
+  +--------------+*/
@@ -282,7 +285,6 @@
+    fsl,sai-mclk-direction-output;
+    status = "okay";
+};
+
+
+
+/*+------------------+
@@ -331,7 +333,6 @@
+        };
+    };
+};
+
+
+
+/*+---------------+
@@ -385,109 +386,6 @@
+    bus-width = <8>;
+    non-removable;
+    status = "okay";
+};
+
+
+/*+---------------------------+
+  | 40 Pin Header GPIO iomuxc |
+  +---------------------------+*/
+
+&iomuxc {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_extgpio>;
+    pinctrl-1 = <&pinctrl_i2c1 &pinctrl_ecspi1_master>;
+    pinctrl-2 = <&pinctrl_flexcan1 &pinctrl_flexcan2>;
+    pinctrl-3 = <&pinctrl_pwm7 &pinctrl_pwm8>;
+    pinctrl-4 = <&pinctrl_uart2 &pinctrl_uart3 &pinctrl_uart4 &pinctrl_uart7>;
+    pinctrl-5 = <&pinctrl_lcdif_dat>;
+
+    pinctrl_extgpio: extgpiogrp {
+        fsl,pins = <
+            MX6UL_PAD_UART1_CTS_B__GPIO1_IO18    0x17059 /*    7#    GPIO    */
+            MX6UL_PAD_SNVS_TAMPER1__GPIO5_IO01    0x17059 /* 35#    GPIO    */
+            MX6UL_PAD_SNVS_TAMPER8__GPIO5_IO08    0x17059 /* 37#    GPIO    */
+            MX6UL_PAD_JTAG_TMS__GPIO1_IO11        0x17059 /* 36# GPIO */
+            MX6UL_PAD_JTAG_MOD__GPIO1_IO10        0x17059 /* 38# GPIO */
+            MX6UL_PAD_SNVS_TAMPER9__GPIO5_IO09    0x17059 /* 40# GPIO */
+        >;
+    };
+
+    pinctrl_i2c1: i2c1grp {
+        fsl,pins = <
+            MX6UL_PAD_GPIO1_IO03__GPIO1_IO03    0x17059 /*    3# I2C1_SDA */
+            MX6UL_PAD_GPIO1_IO02__I2C1_SCL        0x17059 /*    5# I2C1_SCL */
+        >;
+    };
+
+    pinctrl_ecspi1_master: ecspi1grp1 {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA22__GPIO3_IO27    0x17059 /* 19# SPI1_MOSI*/
+            MX6UL_PAD_LCD_DATA23__GPIO3_IO28    0x17059 /* 21# SPI1_MISO*/
+            MX6UL_PAD_LCD_DATA20__GPIO3_IO25    0x17059 /* 23# SPI1_SCLK*/
+            MX6UL_PAD_LCD_DATA21__GPIO3_IO26    0x17059 /* 24# SPI1_SS0 */
+        >;
+    };
+
+    pinctrl_flexcan1: flexcan1grp{
+        fsl,pins = <
+            MX6UL_PAD_UART3_CTS_B__GPIO1_IO26    0x17059 /* 27# CAN1_TX    */
+            MX6UL_PAD_UART3_RTS_B__GPIO1_IO27    0x17059 /* 29# CAN1_RX    */
+        >;
+    };
+
+    pinctrl_flexcan2: flexcan2grp{
+        fsl,pins = <
+            MX6UL_PAD_UART2_CTS_B__GPIO1_IO22    0x17059 /* 31# CAN2_TX    */
+            MX6UL_PAD_UART2_RTS_B__GPIO1_IO23    0x17059 /* 33# CAN2_RX    */
+        >;
+    };
+
+    pinctrl_pwm7: pwm7grp {
+        fsl,pins = <
+            MX6UL_PAD_JTAG_TCK__GPIO1_IO14        0x17059 /* 32# PWM7        */
+        >;
+    };
+
+    pinctrl_pwm8: pwm8grp {
+        fsl,pins = <
+            MX6UL_PAD_JTAG_TRST_B__GPIO1_IO15    0x17059 /* 28# PWM8        */
+        >;
+    };
+
+    pinctrl_uart2: uart2grp {
+        fsl,pins = <
+            MX6UL_PAD_UART2_TX_DATA__GPIO1_IO20 0x17059 /* 8# UART2_TX */
+            MX6UL_PAD_UART2_RX_DATA__GPIO1_IO21 0x17059 /* 10# UART2_RX */
+        >;
+    };
+
+    pinctrl_uart3: uart3grp {
+        fsl,pins = <
+            MX6UL_PAD_UART3_TX_DATA__GPIO1_IO24 0x17059 /* 11# UART3_TX */
+            MX6UL_PAD_UART3_RX_DATA__GPIO1_IO25 0x17059 /* 12# UART3_RX */
+        >;
+    };
+
+    pinctrl_uart4: uart4grp {
+        fsl,pins = <
+            MX6UL_PAD_UART4_TX_DATA__GPIO1_IO28 0x17059 /* 13# UART4_TX */
+            MX6UL_PAD_UART4_RX_DATA__GPIO1_IO29 0x17059 /* 15# UART4_RX */
+        >;
+    };
+
+    pinctrl_uart7: uart7grp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA16__GPIO3_IO21    0x17059 /* 16# UART7_TX */
+            MX6UL_PAD_LCD_DATA17__GPIO3_IO22    0x17059 /* 18# UART7_RX */
+        >;
+    };
+
+    pinctrl_lcdif_dat: lcdifdatgrp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA18__GPIO3_IO23    0x17059 /* 22# GPIO        */
+            MX6UL_PAD_LCD_DATA19__GPIO3_IO24    0x17059 /* 26# GPIO        */
+        >;
+    };
+};
+
+
@@ -698,7 +596,7 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/Makefile linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/Makefile
--- linux-imx/arch/arm/boot/dts/Makefile    2021-09-08 18:41:11.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/Makefile    2022-06-12 17:10:26.378726607 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/Makefile    2022-06-30 20:50:51.165773492 +0800
@@ -1490,3 +1490,6 @@
     aspeed-bmc-opp-zaius.dtb \
     aspeed-bmc-portwell-neptune.dtb \
@@ -708,7 +606,7 @@
+subdir-$(CONFIG_SOC_IMX6UL) += overlays
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/cam.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/cam.dts
--- linux-imx/arch/arm/boot/dts/overlays/cam.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/cam.dts    2022-06-13 21:41:49.095745360 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/cam.dts    2022-06-30 20:52:45.457812387 +0800
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
@@ -736,8 +634,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/can1.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/can1.dts
--- linux-imx/arch/arm/boot/dts/overlays/can1.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/can1.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,29 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/can1.dts    2022-06-30 20:52:45.461812388 +0800
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -758,7 +656,6 @@
+};
+
+&iomuxc {
+    pinctrl-2 = <&pinctrl_flexcan1>;
+    pinctrl_flexcan1: flexcan1grp{
+        fsl,pins = <
+            MX6UL_PAD_UART3_RTS_B__FLEXCAN1_RX    0x1b020
@@ -769,8 +666,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/can2.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/can2.dts
--- linux-imx/arch/arm/boot/dts/overlays/can2.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/can2.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,29 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/can2.dts    2022-06-30 20:52:45.473812390 +0800
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -791,7 +688,6 @@
+};
+
+&iomuxc {
+    pinctrl-2 = <&pinctrl_flexcan2>;
+    pinctrl_flexcan2: flexcan2grp{
+        fsl,pins = <
+            MX6UL_PAD_UART2_RTS_B__FLEXCAN2_RX    0x1b020
@@ -802,8 +698,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/i2c1.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/i2c1.dts
--- linux-imx/arch/arm/boot/dts/overlays/i2c1.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/i2c1.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,29 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/i2c1.dts    2022-06-30 20:52:45.477812390 +0800
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -824,7 +720,6 @@
+};
+
+&iomuxc {
+    pinctrl-1 = <&pinctrl_i2c1>;
+    pinctrl_i2c1: i2c1grp {
+        fsl,pins = <
+            MX6UL_PAD_GPIO1_IO02__I2C1_SCL    0x4001b8b0
@@ -835,8 +730,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/lcd.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/lcd.dts
--- linux-imx/arch/arm/boot/dts/overlays/lcd.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/lcd.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,99 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/lcd.dts    2022-06-30 20:52:45.493812393 +0800
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -864,8 +759,7 @@
+    assigned-clocks = <&clks IMX6UL_CLK_LCDIF_PRE_SEL>;
+    assigned-clock-parents = <&clks IMX6UL_CLK_PLL5_VIDEO_DIV>;
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_lcdif_dat
+             &pinctrl_lcdif_ctrl>;
+    pinctrl-0 = <&pinctrl_lcdif_dat &pinctrl_lcdif_ctrl>;
+    display = <&display0>;
+    status = "okay";
+
@@ -896,7 +790,6 @@
+};
+
+&iomuxc {
+    pinctrl-5 = <&pinctrl_lcdif_dat &pinctrl_lcdif_ctrl>;
+    pinctrl_lcdif_dat: lcdifdatgrp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA00__LCDIF_DATA00    0x79
@@ -915,14 +808,6 @@
+            MX6UL_PAD_LCD_DATA13__LCDIF_DATA13    0x79
+            MX6UL_PAD_LCD_DATA14__LCDIF_DATA14    0x79
+            MX6UL_PAD_LCD_DATA15__LCDIF_DATA15    0x79
+            MX6UL_PAD_LCD_DATA16__LCDIF_DATA16    0x79
+            MX6UL_PAD_LCD_DATA17__LCDIF_DATA17    0x79
+            MX6UL_PAD_LCD_DATA18__LCDIF_DATA18    0x79
+            MX6UL_PAD_LCD_DATA19__LCDIF_DATA19    0x79
+            MX6UL_PAD_LCD_DATA20__LCDIF_DATA20    0x79
+            MX6UL_PAD_LCD_DATA21__LCDIF_DATA21    0x79
+            MX6UL_PAD_LCD_DATA22__LCDIF_DATA22    0x79
+            MX6UL_PAD_LCD_DATA23__LCDIF_DATA23    0x79
+        >;
+    };
+
@@ -938,8 +823,8 @@
+};
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/Makefile linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/Makefile
--- linux-imx/arch/arm/boot/dts/overlays/Makefile    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/Makefile    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,18 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/Makefile    2022-06-30 21:58:16.635775990 +0800
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+
+# required for overlay support
@@ -957,11 +842,50 @@
+dtb-y += pwm8.dtbo
+dtb-y += lcd.dtbo
+dtb-y += cam.dtbo
+dtb-y += nbiot-4g.dtbo
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/nbiot-4g.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/nbiot-4g.dts
--- linux-imx/arch/arm/boot/dts/overlays/nbiot-4g.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/nbiot-4g.dts    2022-06-30 21:58:12.435821592 +0800
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "../imx6ul-pinfunc.h"
+
+/* NB-IoT/4G module use UART8 interfaces, conflict with SPI interface */
+
+&uart8 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_spi_uart8 &pinctrl_nbiot_ctrl>;
+    status = "okay";
+};
+
+&iomuxc {
+    pinctrl_spi_uart8: spi_uart8_grp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA20__UART8_DCE_TX        0x1b0b1 /* MRXD */
+            MX6UL_PAD_LCD_DATA21__UART8_DCE_RX        0x1b0b1 /* MTXD */
+        >;
+    };
+
+    pinctrl_nbiot_ctrl: nbiot_ctrl_grp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA22__GPIO3_IO27        0x17059 /* NB_PWREN/4G_RESET */
+            MX6UL_PAD_JTAG_TRST_B__GPIO1_IO15        0x17059 /* NB_MRST/4G_POWER_KEY */
+        >;
+    };
+};
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/pwm7.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/pwm7.dts
--- linux-imx/arch/arm/boot/dts/overlays/pwm7.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/pwm7.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,29 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/pwm7.dts    2022-06-30 20:52:45.505812395 +0800
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -983,7 +907,6 @@
+};
+
+&iomuxc {
+    pinctrl-3 = <&pinctrl_pwm7>;
+    pinctrl_pwm7: pwm7grp {
+        fsl,pins = <
+            MX6UL_PAD_JTAG_TCK__PWM7_OUT    0x110b0
@@ -993,8 +916,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/pwm8.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/pwm8.dts
--- linux-imx/arch/arm/boot/dts/overlays/pwm8.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/pwm8.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,29 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/pwm8.dts    2022-06-30 20:52:45.505812395 +0800
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -1006,18 +929,17 @@
+#include <dt-bindings/clock/imx6ul-clock.h>
+#include "../imx6ul-pinfunc.h"
+
+/* 40-pin extended GPIO, PWM8 interfaces */
+/* 40-pin extended GPIO, PWM8 interfaces, conflict with NB-IoT */
+
+&pwm8 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_pwm8>;
+    pinctrl-0 = <&pinctrl_pwm8_nbiot>;
+    clocks = <&clks IMX6UL_CLK_PWM8>, <&clks IMX6UL_CLK_PWM8>;
+    status = "okay";
+};
+
+&iomuxc {
+    pinctrl-3 = <&pinctrl_pwm8>;
+    pinctrl_pwm8: pwm8grp {
+    pinctrl_pwm8_nbiot: pwm8nbiotgrp {
+        fsl,pins = <
+            MX6UL_PAD_JTAG_TRST_B__PWM8_OUT    0x110b0
+        >;
@@ -1026,8 +948,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/spi1.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/spi1.dts
--- linux-imx/arch/arm/boot/dts/overlays/spi1.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/spi1.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,40 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/spi1.dts    2022-06-30 21:14:43.885696210 +0800
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -1039,11 +961,11 @@
+#include <dt-bindings/gpio/gpio.h>
+#include "../imx6ul-pinfunc.h"
+
+/* 40-pin extended GPIO, SPI1 interfaces, conflict with LCD display */
+/* 40-pin extended GPIO, SPI1 interfaces, conflict with UART8 */
+
+&ecspi1 {
+    pinctrl-names = "default";
+    pinctrl-0 = <&pinctrl_ecspi1_master>;
+    pinctrl-0 = <&pinctrl_spi_uart8>;
+    cs-gpios = <&gpio3 26 GPIO_ACTIVE_LOW>;
+    status = "okay";
+
@@ -1058,8 +980,7 @@
+};
+
+&iomuxc {
+    pinctrl-1 = <&pinctrl_ecspi1_master>;
+    pinctrl_ecspi1_master: ecspi1grp1 {
+    pinctrl_spi_uart8: spi_uart8_grp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA20__ECSPI1_SCLK    0x10b0
+            MX6UL_PAD_LCD_DATA22__ECSPI1_MOSI    0x10b0
@@ -1070,8 +991,8 @@
+};
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/uart2.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart2.dts
--- linux-imx/arch/arm/boot/dts/overlays/uart2.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart2.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,27 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart2.dts    2022-06-30 20:52:45.513812395 +0800
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -1091,7 +1012,6 @@
+};
+
+&iomuxc {
+    pinctrl-4 = <&pinctrl_uart2>;
+    pinctrl_uart2: uart2grp {
+        fsl,pins = <
+            MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX    0x1b0b1
@@ -1101,8 +1021,8 @@
+};
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/uart3.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart3.dts
--- linux-imx/arch/arm/boot/dts/overlays/uart3.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart3.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,28 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart3.dts    2022-06-30 20:52:45.525812397 +0800
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -1122,7 +1042,6 @@
+};
+
+&iomuxc {
+    pinctrl-4 = <&pinctrl_uart3>;
+    pinctrl_uart3: uart3grp {
+        fsl,pins = <
+            MX6UL_PAD_UART3_TX_DATA__UART3_DCE_TX    0x1b0b1
@@ -1133,8 +1052,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/uart4.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart4.dts
--- linux-imx/arch/arm/boot/dts/overlays/uart4.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart4.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,28 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart4.dts    2022-06-30 20:52:45.525812397 +0800
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -1154,7 +1073,6 @@
+};
+
+&iomuxc {
+    pinctrl-4 = <&pinctrl_uart4>;
+    pinctrl_uart4: uart4grp {
+        fsl,pins = <
+            MX6UL_PAD_UART4_TX_DATA__UART4_DCE_TX    0x1b0b1
@@ -1165,8 +1083,8 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/boot/dts/overlays/uart7.dts linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart7.dts
--- linux-imx/arch/arm/boot/dts/overlays/uart7.dts    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart7.dts    2022-06-12 17:10:26.378726607 +0800
@@ -0,0 +1,28 @@
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/boot/dts/overlays/uart7.dts    2022-06-30 20:52:45.537812399 +0800
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2022 LingYun IoT System Studio
+ * Author:  Guo Wenxue<guowenxue@gmail.com>
@@ -1186,7 +1104,6 @@
+};
+
+&iomuxc {
+    pinctrl-4 = <&pinctrl_uart7>;
+    pinctrl_uart7: uart7grp {
+        fsl,pins = <
+            MX6UL_PAD_LCD_DATA16__UART7_DCE_TX        0x1b0b1
@@ -1197,7 +1114,7 @@
+
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/arch/arm/configs/igkboard_defconfig linux-imx-lf-5.10.52-2.1.0/arch/arm/configs/igkboard_defconfig
--- linux-imx/arch/arm/configs/igkboard_defconfig    1970-01-01 08:00:00.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/configs/igkboard_defconfig    2022-06-13 21:56:27.500562135 +0800
+++ linux-imx-lf-5.10.52-2.1.0/arch/arm/configs/igkboard_defconfig    2022-06-30 22:25:58.551377437 +0800
@@ -0,0 +1,722 @@
+CONFIG_KERNEL_LZO=y
+CONFIG_SYSVIPC=y
@@ -1923,7 +1840,7 @@
+# CONFIG_FTRACE is not set
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/drivers/video/backlight/pwm_bl.c linux-imx-lf-5.10.52-2.1.0/drivers/video/backlight/pwm_bl.c
--- linux-imx/drivers/video/backlight/pwm_bl.c    2021-09-08 18:41:11.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/drivers/video/backlight/pwm_bl.c    2022-06-12 17:10:26.378726607 +0800
+++ linux-imx-lf-5.10.52-2.1.0/drivers/video/backlight/pwm_bl.c    2022-06-30 20:50:51.165773492 +0800
@@ -558,6 +558,7 @@
     if (!state.period && (data->pwm_period_ns > 0))
         state.period = data->pwm_period_ns;
@@ -1934,7 +1851,7 @@
         dev_err(&pdev->dev, "failed to apply initial PWM state: %d\n",
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/Makefile linux-imx-lf-5.10.52-2.1.0/Makefile
--- linux-imx/Makefile    2021-09-08 18:41:11.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/Makefile    2022-06-12 18:02:43.392114072 +0800
+++ linux-imx-lf-5.10.52-2.1.0/Makefile    2022-06-30 20:53:02.309812083 +0800
@@ -367,7 +367,8 @@
 # Alternatively CROSS_COMPILE can be set in the environment.
 # Default value for CROSS_COMPILE is not to prefix executables
@@ -1955,7 +1872,7 @@
         -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
diff -Nuar --no-dereference -x logo_linux_clut224.ppm linux-imx/scripts/Makefile.lib linux-imx-lf-5.10.52-2.1.0/scripts/Makefile.lib
--- linux-imx/scripts/Makefile.lib    2021-09-08 18:41:11.000000000 +0800
+++ linux-imx-lf-5.10.52-2.1.0/scripts/Makefile.lib    2022-06-12 17:10:26.378726607 +0800
+++ linux-imx-lf-5.10.52-2.1.0/scripts/Makefile.lib    2022-06-30 20:50:51.181773299 +0800
@@ -325,6 +325,16 @@
 $(obj)/%.dtb: $(src)/%.dts $(DTC) FORCE
     $(call if_changed_dep,dtc)