Zigbee Stack interference with TWIM

[i3pdmaguirre]

During development, I am seeing a strange behavior when enabling zigbee. 

When the application's PRJ file does not enable zigbee, I2C functions as expected. The peripherals can be read and responses are received (as shown in the attached picture) 

Without the zigbee/networking processor active, this is what things look like in yellow below:

1. Raising edge I2C transaction started

2. Falling edge I2C transaction completed

The purple  line indicates edges (falling and raising) are a trigger to start an I2C transaction

PRJ.conf (zigbee not enabled)

CONFIG_FPU=y
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_EVENTS=y
CONFIG_I2C=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_AUDIO=y
CONFIG_CMSIS_DSP=y
CONFIG_CMSIS_DSP_TRANSFORM=y
CONFIG_AUDIO_DMIC=y
CONFIG_NRFX_TIMER1=y
CONFIG_MPU_ALLOW_FLASH_WRITE=y
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_JESD216_API=y
CONFIG_SPI=n
CONFIG_SPI_NOR=n
CONFIG_NORDIC_QSPI_NOR=y
CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
CONFIG_FILE_SYSTEM=y
CONFIG_FILE_SYSTEM_LITTLEFS=y
#CONFIG_APP_WIPE_STORAGE=y
CONFIG_APP_LITTLEFS_STORAGE_FLASH=y
# CONFIG_LOG=y
# CONFIG_LOG_BACKEND_UART=n
# CONFIG_LOG_MODE_MINIMAL=y
# CONFIG_LOG_DEFAULT_LEVEL=0
CONFIG_HEAP_MEM_POOL_SIZE=8192
CONFIG_REBOOT=y

When Zigbee configurations are enabled (w/o even initializing Zboss) All comms on i2c3 time out.

CONFIG_FPU=y
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
CONFIG_EVENTS=y
CONFIG_I2C=y
CONFIG_NEWLIB_LIBC=y
CONFIG_NEWLIB_LIBC_FLOAT_PRINTF=y
CONFIG_AUDIO=y
CONFIG_AUDIO_DMIC=y

CONFIG_HEAP_MEM_POOL_SIZE=32768

CONFIG_ZIGBEE=y
CONFIG_ZIGBEE_APP_UTILS=y
CONFIG_ZIGBEE_ROLE_END_DEVICE=y
# Enable DK LED and Buttons library
CONFIG_DK_LIBRARY=y

# This example requires more workqueue stack
CONFIG_SYSTEM_WORKQUEUE_STACK_SIZE=2048
# Enable API for powering down unused RAM parts
CONFIG_RAM_POWER_DOWN_LIBRARY=y

# Networking
CONFIG_NET_IPV6_MLD=n
CONFIG_NET_IPV6_NBR_CACHE=n
CONFIG_NET_IPV6_RA_RDNSS=n
CONFIG_NET_IP_ADDR_CHECK=n
CONFIG_NET_UDP=n

CONFIG_LOG=y
CONFIG_LOG_DEFAULT_LEVEL=1
CONFIG_IEEE802154_DRIVER_LOG_LEVEL_INF=y

CONFIG_NRF53_SYNC_RTC=n

CONFIG_ASSERT=y
CONFIG_SPIN_VALIDATE=y
CONFIG_LOG_MODE_MINIMAL=n

CONFIG_MAIN_STACK_SIZE=2048

# Use software cryptography on nRF5340
CONFIG_ZIGBEE_USE_SOFTWARE_AES=y

# Networking
CONFIG_MPSL=n


CONFIG_NUM_COOP_PRIORITIES=20
CONFIG_NUM_PREEMPT_PRIORITIES=30
CONFIG_CMSIS_DSP=y
CONFIG_CMSIS_DSP_TRANSFORM=y
CONFIG_AUDIO_DMIC=y
CONFIG_NRFX_TIMER1=y
CONFIG_MPU_ALLOW_FLASH_WRITE=y
CONFIG_FLASH=y
CONFIG_FLASH_MAP=y
CONFIG_FLASH_PAGE_LAYOUT=y
CONFIG_FLASH_JESD216_API=y
CONFIG_SPI=n
CONFIG_SPI_NOR=n
CONFIG_NORDIC_QSPI_NOR=y
CONFIG_NORDIC_QSPI_NOR_FLASH_LAYOUT_PAGE_SIZE=4096
CONFIG_FILE_SYSTEM=y
CONFIG_FILE_SYSTEM_LITTLEFS=y
#CONFIG_APP_WIPE_STORAGE=y
CONFIG_APP_LITTLEFS_STORAGE_FLASH=y
# CONFIG_LOG=y
# CONFIG_LOG_BACKEND_UART=n
# CONFIG_LOG_MODE_MINIMAL=y
# CONFIG_LOG_DEFAULT_LEVEL=0
CONFIG_REBOOT=y

Is there a known interaction between zigbee and I2C that prevents all I2C peripherals from bein used?

[Elfving]

Hello again,

What pins and I2C instance are you using?

Regards,

Elfving

[i3pdmaguirre]

&i2c3 {
    compatible = "nordic,nrf-twim";
    status = "okay";
    pinctrl-0 = <&custom_i2c3_default>;
    pinctrl-1 = <&custom_i2c3_sleep>;
    pinctrl-names = "default", "sleep";
};

.......

    custom_i2c3_default: custom_i2c3_default {
        group1 {
            psels = <NRF_PSEL(TWIM_SDA, 0, 10)>,
                <NRF_PSEL(TWIM_SCL, 0, 9)>;
        };
    };
    
        custom_i2c3_sleep: custom_i2c3_sleep {
        group1 {
            psels = <NRF_PSEL(TWIM_SDA, 0, 10)>,
                <NRF_PSEL(TWIM_SCL, 0, 9)>;
            low-power-enable;
        };
    };

 Elfving  On the 5340 the mapped pins are P0.10 and P0.09

on my app.overlay

[Elfving]

Hi,

It seems that the control over GPIOS P1.01, P1.00, P0.11 & P0.10, are by default forwarded to the network core for use with uart.

Could you try replacing P0.10?

Regards,

Elfving

[i3pdmaguirre]

We're running on a custom hardware implementation. Is there a way to replace the defaults used by the network core? If so how?

[Elfving]

As in using a different set of pins to the network core? Sure! 

The pin forwarding is handled by this section in the nrf5340_cpuapp_common.dts

	gpio_fwd: nrf-gpio-forwarder {
		compatible = "nordic,nrf-gpio-forwarder";
		status = "okay";
		uart {
			gpios = <&gpio1 1 0>, <&gpio1 0 0>, <&gpio0 11 0>, <&gpio0 10 0>;
		};
	};

Simply replace the GPIOs with what you would prefer. For more on how to use the forwarder, see here. 

Regards,

Elfving

[i3pdmaguirre]

Elfving 

I have added to my overlay the changes needed to change the forwarder's use of GPIO 0.10. However the problem still remains.

I have confirmed that the final zephyr.dts file reflects the changes I made

	gpio_fwd: nrf-gpio-forwarder {
		compatible = "nordic,nrf-gpio-forwarder";
		status = "okay";
		uart {
			gpios = < &gpio1 0x1 0x0 >, < &gpio1 0x0 0x0 >, < &gpio0 0xb 0x0 >, < &gpio0 0x18 0x0 >;
		};
	};

Unfortunately the debug log from the device is still complaining about issues with I2C

00:00.894,012] <err> i2c_nrfx_twim: Error on I2C line occurred for message 0
[00:00:01.394,256] <err> i2c_nrfx_twim: Error on I2C line occurred for message 0
[00:00:01.894,500] <err> i2c_nrfx_twim: Error on I2C line occurred for message 0

[Elfving]

I see.

What are you running on the network core? Could you check if the pins are used there? Is uart0 mentioned in the child image zephyr.dts file?

Regards,

Elfving

[i3pdmaguirre]

>What are you running on the network core?

At the moment nothing is running. As I mentioned initially I am enabling the zigbee stack via my prj.conf file but the application is not starting up zboss.

>Could you check if the pins are used there? Is uart0 mentioned in the child image zephyr.dts file?

I inserted the dts for the network core but the only item I am seeing related to uart0 is the following:

compatible = "nordic,nrf-pinctrl";

uart0_default: uart0_default {

phandle = < 0x7 >;

group1 {

psels = < 0x21 >, < 0x2000b >;

};

group2 {

psels = < 0x10020 >, < 0x3000a >;

bias-pull-up;

};

};

uart0_sleep: uart0_sleep {

phandle = < 0x8 >;

group1 {

psels = < 0x21 >, < 0x10020 >, < 0x2000b >, < 0x3000a >;

low-power-enable;

};

};

file found in `build/802154_rpmsg/zephyr/zephyr.dts`

/dts-v1/;

/ {
	#address-cells = < 0x1 >;
	#size-cells = < 0x1 >;
	model = "Nordic NRF5340 DK NRF5340 Network";
	compatible = "nordic,nrf5340-dk-nrf5340-cpunet";
	chosen {
		zephyr,entropy = &rng;
		zephyr,flash-controller = &flash_controller;
		zephyr,console = &uart0;
		zephyr,shell-uart = &uart0;
		zephyr,uart-mcumgr = &uart0;
		zephyr,bt-mon-uart = &uart0;
		zephyr,bt-c2h-uart = &uart0;
		zephyr,bt-hci-rpmsg-ipc = &ipc0;
		zephyr,sram = &sram1;
		zephyr,flash = &flash1;
		zephyr,code-partition = &slot0_partition;
		zephyr,ipc_shm = &sram0_shared;
	};
	aliases {
		led0 = &led0;
		led1 = &led1;
		led2 = &led2;
		led3 = &led3;
		sw0 = &button0;
		sw1 = &button1;
		sw2 = &button2;
		sw3 = &button3;
		bootloader-led0 = &led0;
		mcuboot-button0 = &button0;
		mcuboot-led0 = &led0;
		watchdog0 = &wdt0;
	};
	soc {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		compatible = "nordic,nRF5340-CPUNET-QKAA", "nordic,nRF5340-CPUNET", "nordic,nRF53", "simple-bus";
		interrupt-parent = < &nvic >;
		ranges;
		nvic: interrupt-controller@e000e100 {
			#address-cells = < 0x1 >;
			compatible = "arm,v8m-nvic";
			reg = < 0xe000e100 0xc00 >;
			interrupt-controller;
			#interrupt-cells = < 0x2 >;
			arm,num-irq-priority-bits = < 0x3 >;
			phandle = < 0x1 >;
		};
		systick: timer@e000e010 {
			compatible = "arm,armv8m-systick";
			reg = < 0xe000e010 0x10 >;
			status = "disabled";
		};
		ficr: ficr@1ff0000 {
			compatible = "nordic,nrf-ficr";
			reg = < 0x1ff0000 0x1000 >;
			status = "okay";
		};
		uicr: uicr@1ff8000 {
			compatible = "nordic,nrf-uicr";
			reg = < 0x1ff8000 0x1000 >;
			status = "okay";
		};
		sram0: memory@20000000 {
			compatible = "mmio-sram";
			reg = < 0x20000000 0x80000 >;
		};
		sram1: memory@21000000 {
			compatible = "zephyr,memory-region", "mmio-sram";
			zephyr,memory-region = "SRAM1";
			reg = < 0x21000000 0x10000 >;
		};
		clock: clock@41005000 {
			compatible = "nordic,nrf-clock";
			reg = < 0x41005000 0x1000 >;
			interrupts = < 0x5 0x1 >;
			status = "okay";
		};
		power: power@41005000 {
			compatible = "nordic,nrf-power";
			reg = < 0x41005000 0x1000 >;
			interrupts = < 0x5 0x1 >;
			status = "okay";
		};
		radio: radio@41008000 {
			compatible = "nordic,nrf-radio";
			reg = < 0x41008000 0x1000 >;
			interrupts = < 0x8 0x1 >;
			status = "okay";
			dfe-supported;
			ieee802154-supported;
			ble-2mbps-supported;
			ble-coded-phy-supported;
		};
		rng: random@41009000 {
			compatible = "nordic,nrf-rng";
			reg = < 0x41009000 0x1000 >;
			interrupts = < 0x9 0x1 >;
			status = "okay";
		};
		gpiote: gpiote@4100a000 {
			compatible = "nordic,nrf-gpiote";
			reg = < 0x4100a000 0x1000 >;
			interrupts = < 0xa 0x5 >;
			status = "okay";
		};
		wdt: wdt0: watchdog@4100b000 {
			compatible = "nordic,nrf-wdt";
			reg = < 0x4100b000 0x1000 >;
			interrupts = < 0xb 0x1 >;
			status = "okay";
		};
		timer0: timer@4100c000 {
			compatible = "nordic,nrf-timer";
			status = "okay";
			reg = < 0x4100c000 0x1000 >;
			cc-num = < 0x8 >;
			interrupts = < 0xc 0x1 >;
			prescaler = < 0x0 >;
		};
		ecb: ecb@4100d000 {
			compatible = "nordic,nrf-ecb";
			reg = < 0x4100d000 0x1000 >;
			interrupts = < 0xd 0x1 >;
			status = "okay";
		};
		ccm: ccm@4100e000 {
			compatible = "nordic,nrf-ccm";
			reg = < 0x4100e000 0x1000 >;
			interrupts = < 0xe 0x1 >;
			length-field-length-8-bits;
			status = "okay";
		};
		dppic: dppic@4100f000 {
			compatible = "nordic,nrf-dppic";
			reg = < 0x4100f000 0x1000 >;
			status = "okay";
		};
		temp: temp@41010000 {
			compatible = "nordic,nrf-temp";
			reg = < 0x41010000 0x1000 >;
			interrupts = < 0x10 0x1 >;
			status = "okay";
		};
		rtc0: rtc@41011000 {
			compatible = "nordic,nrf-rtc";
			reg = < 0x41011000 0x1000 >;
			cc-num = < 0x4 >;
			interrupts = < 0x11 0x1 >;
			status = "okay";
		};
		mbox: ipc: mbox@41012000 {
			compatible = "nordic,mbox-nrf-ipc", "nordic,nrf-ipc";
			reg = < 0x41012000 0x1000 >;
			tx-mask = < 0xffff >;
			rx-mask = < 0xffff >;
			interrupts = < 0x12 0x1 >;
			#mbox-cells = < 0x1 >;
			status = "okay";
			phandle = < 0xa >;
		};
		i2c0: arduino_i2c: i2c@41013000 {
			compatible = "nordic,nrf-twim";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0x41013000 0x1000 >;
			clock-frequency = < 0x186a0 >;
			interrupts = < 0x13 0x1 >;
			status = "disabled";
			pinctrl-0 = < &i2c0_default >;
			pinctrl-1 = < &i2c0_sleep >;
			pinctrl-names = "default", "sleep";
		};
		spi0: arduino_spi: spi@41013000 {
			compatible = "nordic,nrf-spim";
			#address-cells = < 0x1 >;
			#size-cells = < 0x0 >;
			reg = < 0x41013000 0x1000 >;
			interrupts = < 0x13 0x1 >;
			max-frequency = < 0x7a1200 >;
			status = "disabled";
			cs-gpios = < &arduino_header 0x10 0x1 >;
			pinctrl-0 = < &spi0_default >;
			pinctrl-1 = < &spi0_sleep >;
			pinctrl-names = "default", "sleep";
		};
		uart0: arduino_serial: uart@41013000 {
			compatible = "nordic,nrf-uarte";
			reg = < 0x41013000 0x1000 >;
			interrupts = < 0x13 0x1 >;
			status = "okay";
			current-speed = < 0x1c200 >;
			pinctrl-0 = < &uart0_default >;
			pinctrl-1 = < &uart0_sleep >;
			pinctrl-names = "default", "sleep";
		};
		egu0: egu@41014000 {
			compatible = "nordic,nrf-egu";
			reg = < 0x41014000 0x1000 >;
			interrupts = < 0x14 0x1 >;
			status = "okay";
		};
		rtc1: rtc@41016000 {
			compatible = "nordic,nrf-rtc";
			reg = < 0x41016000 0x1000 >;
			cc-num = < 0x4 >;
			interrupts = < 0x16 0x1 >;
			status = "okay";
		};
		timer1: timer@41018000 {
			compatible = "nordic,nrf-timer";
			status = "okay";
			reg = < 0x41018000 0x1000 >;
			cc-num = < 0x8 >;
			interrupts = < 0x18 0x1 >;
			prescaler = < 0x0 >;
		};
		timer2: timer@41019000 {
			compatible = "nordic,nrf-timer";
			status = "okay";
			reg = < 0x41019000 0x1000 >;
			cc-num = < 0x8 >;
			interrupts = < 0x19 0x1 >;
			prescaler = < 0x0 >;
		};
		swi0: swi@4101a000 {
			compatible = "nordic,nrf-swi";
			reg = < 0x4101a000 0x1000 >;
			interrupts = < 0x1a 0x1 >;
			status = "okay";
		};
		swi1: swi@4101b000 {
			compatible = "nordic,nrf-swi";
			reg = < 0x4101b000 0x1000 >;
			interrupts = < 0x1b 0x1 >;
			status = "okay";
		};
		swi2: swi@4101c000 {
			compatible = "nordic,nrf-swi";
			reg = < 0x4101c000 0x1000 >;
			interrupts = < 0x1c 0x1 >;
			status = "okay";
		};
		swi3: swi@4101d000 {
			compatible = "nordic,nrf-swi";
			reg = < 0x4101d000 0x1000 >;
			interrupts = < 0x1d 0x1 >;
			status = "okay";
		};
		acl: acl@41080000 {
			compatible = "nordic,nrf-acl";
			reg = < 0x41080000 0x1000 >;
			status = "okay";
		};
		flash_controller: flash-controller@41080000 {
			compatible = "nordic,nrf53-flash-controller";
			reg = < 0x41080000 0x1000 >;
			partial-erase;
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			flash1: flash@1000000 {
				compatible = "soc-nv-flash";
				erase-block-size = < 0x800 >;
				write-block-size = < 0x4 >;
				reg = < 0x1000000 0x40000 >;
				partitions {
					compatible = "fixed-partitions";
					#address-cells = < 0x1 >;
					#size-cells = < 0x1 >;
					boot_partition: partition@0 {
						label = "mcuboot";
						reg = < 0x0 0xc000 >;
					};
					slot0_partition: partition@c000 {
						label = "image-0";
						reg = < 0xc000 0x12000 >;
					};
					slot1_partition: partition@1e000 {
						label = "image-1";
						reg = < 0x1e000 0x12000 >;
					};
					scratch_partition: partition@30000 {
						label = "image-scratch";
						reg = < 0x30000 0xa000 >;
					};
					storage_partition: partition@3a000 {
						label = "storage";
						reg = < 0x3a000 0x6000 >;
					};
				};
			};
		};
		vmc: vmc@41081000 {
			compatible = "nordic,nrf-vmc";
			reg = < 0x41081000 0x1000 >;
			status = "okay";
		};
		gpio0: gpio@418c0500 {
			compatible = "nordic,nrf-gpio";
			gpio-controller;
			reg = < 0x418c0500 0x300 >;
			#gpio-cells = < 0x2 >;
			status = "okay";
			port = < 0x0 >;
			phandle = < 0xb >;
		};
		gpio1: gpio@418c0800 {
			compatible = "nordic,nrf-gpio";
			gpio-controller;
			reg = < 0x418c0800 0x300 >;
			#gpio-cells = < 0x2 >;
			ngpios = < 0x10 >;
			status = "okay";
			port = < 0x1 >;
			phandle = < 0xc >;
		};
	};
	pinctrl: pin-controller {
		compatible = "nordic,nrf-pinctrl";
		uart0_default: uart0_default {
			phandle = < 0x7 >;
			group1 {
				psels = < 0x21 >, < 0x2000b >;
			};
			group2 {
				psels = < 0x10020 >, < 0x3000a >;
				bias-pull-up;
			};
		};
		uart0_sleep: uart0_sleep {
			phandle = < 0x8 >;
			group1 {
				psels = < 0x21 >, < 0x10020 >, < 0x2000b >, < 0x3000a >;
				low-power-enable;
			};
		};
		i2c0_default: i2c0_default {
			phandle = < 0x2 >;
			group1 {
				psels = < 0xc0022 >, < 0xb0023 >;
			};
		};
		i2c0_sleep: i2c0_sleep {
			phandle = < 0x3 >;
			group1 {
				psels = < 0xc0022 >, < 0xb0023 >;
				low-power-enable;
			};
		};
		spi0_default: spi0_default {
			phandle = < 0x5 >;
			group1 {
				psels = < 0x4002f >, < 0x6002e >, < 0x5002d >;
			};
		};
		spi0_sleep: spi0_sleep {
			phandle = < 0x6 >;
			group1 {
				psels = < 0x4002f >, < 0x6002e >, < 0x5002d >;
				low-power-enable;
			};
		};
	};
	rng_hci: entropy_bt_hci {
		compatible = "zephyr,bt-hci-entropy";
		status = "okay";
	};
	cpus {
		#address-cells = < 0x1 >;
		#size-cells = < 0x0 >;
		cpu@1 {
			device_type = "cpu";
			compatible = "arm,cortex-m33";
			reg = < 0x1 >;
			#address-cells = < 0x1 >;
			#size-cells = < 0x1 >;
			mpu: mpu@e000ed90 {
				compatible = "arm,armv8m-mpu";
				reg = < 0xe000ed90 0x40 >;
				arm,num-mpu-regions = < 0x8 >;
			};
		};
	};
	ipc {
		ipc0: ipc0 {
			compatible = "zephyr,ipc-openamp-static-vrings";
			memory-region = < &sram0_shared >;
			mboxes = < &mbox 0x0 >, < &mbox 0x1 >;
			mbox-names = "rx", "tx";
			role = "remote";
			status = "okay";
		};
	};
	leds {
		compatible = "gpio-leds";
		led0: led_0 {
			gpios = < &gpio0 0x1c 0x1 >;
			label = "Green LED 0";
		};
		led1: led_1 {
			gpios = < &gpio0 0x1d 0x1 >;
			label = "Green LED 1";
		};
		led2: led_2 {
			gpios = < &gpio0 0x1e 0x1 >;
			label = "Green LED 2";
		};
		led3: led_3 {
			gpios = < &gpio0 0x1f 0x1 >;
			label = "Green LED 3";
		};
	};
	buttons {
		compatible = "gpio-keys";
		button0: button_0 {
			gpios = < &gpio0 0x17 0x11 >;
			label = "Push button 1";
		};
		button1: button_1 {
			gpios = < &gpio0 0x18 0x11 >;
			label = "Push button 2";
		};
		button2: button_2 {
			gpios = < &gpio0 0x8 0x11 >;
			label = "Push button 3";
		};
		button3: button_3 {
			gpios = < &gpio0 0x9 0x11 >;
			label = "Push button 4";
		};
	};
	arduino_header: connector {
		compatible = "arduino-header-r3";
		#gpio-cells = < 0x2 >;
		gpio-map-mask = < 0xffffffff 0xffffffc0 >;
		gpio-map-pass-thru = < 0x0 0x3f >;
		gpio-map = < 0x0 0x0 &gpio0 0x4 0x0 >, < 0x1 0x0 &gpio0 0x5 0x0 >, < 0x2 0x0 &gpio0 0x6 0x0 >, < 0x3 0x0 &gpio0 0x7 0x0 >, < 0x4 0x0 &gpio0 0x19 0x0 >, < 0x5 0x0 &gpio0 0x1a 0x0 >, < 0x6 0x0 &gpio1 0x0 0x0 >, < 0x7 0x0 &gpio1 0x1 0x0 >, < 0x8 0x0 &gpio1 0x4 0x0 >, < 0x9 0x0 &gpio1 0x5 0x0 >, < 0xa 0x0 &gpio1 0x6 0x0 >, < 0xb 0x0 &gpio1 0x7 0x0 >, < 0xc 0x0 &gpio1 0x8 0x0 >, < 0xd 0x0 &gpio1 0x9 0x0 >, < 0xe 0x0 &gpio1 0xa 0x0 >, < 0xf 0x0 &gpio1 0xb 0x0 >, < 0x10 0x0 &gpio1 0xc 0x0 >, < 0x11 0x0 &gpio1 0xd 0x0 >, < 0x12 0x0 &gpio1 0xe 0x0 >, < 0x13 0x0 &gpio1 0xf 0x0 >, < 0x14 0x0 &gpio1 0x2 0x0 >, < 0x15 0x0 &gpio1 0x3 0x0 >;
		phandle = < 0x4 >;
	};
	reserved-memory {
		#address-cells = < 0x1 >;
		#size-cells = < 0x1 >;
		ranges;
		sram0_shared: memory@20070000 {
			reg = < 0x20070000 0x10000 >;
			phandle = < 0x9 >;
		};
	};
};