On Tue, 27 Oct 2020 at 15:15, Alper Nebi Yasak alpernebiyasak@gmail.com wrote:
It's possible to chainload U-Boot proper from the vendor firmware in rk3399 chromebooks, but the way the vendor firmware sets up clocks is somehow different than what U-Boot expects. This causes the display to stay devoid of content even though vidconsole claims to work (with patches in process of being upstreamed).
This is meant to be a rk3399 version of commit d3cb46aa8c41 ("rockchip: Init clocks again when chain-loading") which can detect the discrepancy, but this patch instead checks whether SPL (and therefore the clock init) was run via the handoff functionality and runs the init if it was not.
Signed-off-by: Alper Nebi Yasak alpernebiyasak@gmail.com
Changes in v2:
- Check for SPL handoff instead of always re-initializing
v1: https://patchwork.ozlabs.org/project/uboot/patch/20201022203740.24528-1-alpe...
drivers/clk/rockchip/clk_rk3399.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org