On Fri, Sep 03, 2021 at 10:09:02AM -0700, Tomasz Bielecki wrote:
> 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
I don't think we should have a patch labelled "HACK NOTFORMERGE".
Talk to the people working on rk3399 video support upstream. Perhaps
they have something better already merged or sent to the U-Boot list.
>
> 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;
> }
>
>
