Please consider including this patch, it seems common across other OSes supporting Pinebook Pro and fixes the display issues on warm reset.
$OpenBSD$ Fix Pinebook Pro display on warm reset. By Arnaud Patard http://people.hupstream.com/~rtp/pbp/20200706/patches/hack-reset.patch Index: board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c --- board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c.orig +++ board/pine64/pinebook-pro-rk3399/pinebook-pro-rk3399.c @@ -7,9 +7,12 @@ #include <common.h> #include <dm.h> #include <syscon.h> +#include <linux/delay.h> +#include <asm/gpio.h> #include <asm/io.h> #include <asm/arch-rockchip/clock.h> #include <asm/arch-rockchip/grf_rk3399.h> +#include <asm/arch-rockchip/gpio.h> #include <asm/arch-rockchip/hardware.h> #include <asm/arch-rockchip/misc.h> #include <power/regulator.h> @@ -59,6 +62,7 @@ int misc_init_r(void) const u32 cpuid_length = 0x10; u8 cpuid[cpuid_length]; int ret; + unsigned int gpio; setup_iodomain(); @@ -69,6 +73,11 @@ int misc_init_r(void) ret = rockchip_cpuid_set(cpuid, cpuid_length); if (ret) return ret; + + gpio_lookup_name("B22", NULL, NULL, &gpio); + gpio_direction_output(gpio, 0); + udelay(500000); + gpio_direction_output(gpio, 1); return ret; }
