最终GPIO PL需要定义到FPGA的IO中,所以我们需要引出GPIO PL信号到system_top顶层文件 1modulesystem_top (2outputPL_LED,3inputPL_KEY4);5wire[1:0] pl_gpio_in;6wire[1:0] pl_gpio_out;7assignPL_LED = pl_gpio_out[0];8assignpl_gpio_in[1] =PL_KEY;9system I_system (10.pl_gpio_in (pl...
mode-gpio, it throw error to user so that the used can make gpio-pcf857x as inbuilt for NFS. When using mmc/ramdisk as root fs, cpsw will probe defer and re-probes again when gpio-pcf857x module is inserted and ethernet becomes operational....
This patch adds DT definition for CF8575 GPIO pcf_lcd: gpio@20 expander which is connected to i2c bus 1 and has slave address 0x20. It allows to control: - tc_lcd gpios, pins p0-p3 - user leds, pins p4-p7 - control LCD panel power, p15...
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