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u-boot overlay.dtbo
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| # mkimage -A arm -T script -C none -n "Boot script" -d boot.cmd boot.scr | |
| load ${devtype} ${devnum}:${distro_bootpart} ${fdtoverlay_addr_r} ${prefix}overlay.dtbo | |
| fdt addr ${fdtcontroladdr} | |
| fdt resize 16384 | |
| fdt apply ${fdtoverlay_addr_r} |
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| CPP=cpp | |
| DTC=dtc | |
| MKIMAGE=mkimage | |
| LINUX=/home/matwey/lab/linux | |
| all: boot.scr overlay.dtbo | |
| clean: | |
| rm -rf boot.scr overlay.dtbo overlay.i | |
| boot.scr: boot.cmd | |
| ${MKIMAGE} -A arm -T script -C none -n "Boot script" -d $< $@ | |
| overlay.i: overlay.dtso | |
| ${CPP} -x assembler-with-cpp -I ${LINUX}/include $< $@ | |
| overlay.dtbo: overlay.i | |
| ${DTC} -@ -O dtb -o $@ $< |
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| /* cpp -x assembler-with-cpp -I /home/matwey/lab/linux/include overlay.dtso overlay.i */ | |
| /* dtc -O dtb -o overlay.dtbo overlay.dtso */ | |
| /dts-v1/; | |
| /plugin/; | |
| #include <dt-bindings/i2c/i2c.h> | |
| #include <dt-bindings/gpio/gpio.h> | |
| &i2c0 { | |
| status = "okay"; | |
| }; | |
| &i2c1 { | |
| status = "okay"; | |
| }; | |
| &{/soc} { | |
| test-node { | |
| compatible = "test"; | |
| status = "okay"; | |
| }; | |
| /* | |
| i2c-gpio { | |
| compatible = "i2c-gpio"; | |
| sda-gpios = <&pio 8 0 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; // PI0 (29) | |
| scl-gpios = <&pio 8 15 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>; // PI15 (31) | |
| i2c-gpio,delay-us = <2>; /* ~100 kHz */ | |
| /* #address-cells = <1>; | |
| #size-cells = <0>; | |
| status = "okay"; | |
| testunit@30 { | |
| compatible = "slave-testunit"; | |
| reg = <(0x30 | I2C_OWN_SLAVE_ADDRESS)>; | |
| }; | |
| };*/ | |
| }; |
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