Found this by comparing it to the coreboot driver, a form of this call
was introduced there in their commit b9a7877568cf ("rockchip/*: refactor
edp driver"). This is copy-pasted from U-Boot's link_train_cr() slightly
above it.
Without this on a gru-kevin chromebook, I have:
clock recovery at voltage 0 pre-emphasis 0
requested signal parameters: lane 0 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 3.5dB
using signal parameters: voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 0 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 3.5dB
using signal parameters: voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 0 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 3.5dB
using signal parameters: voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 0 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 3.5dB
using signal parameters: voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 0 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 3.5dB
using signal parameters: voltage 0.4V pre_emph 3.5dB
channel eq failed, ret=-5
link train failed!
rk_vop_probe() Device failed: ret=-5
With this, it looks like training succeeds:
clock recovery at voltage 0 pre-emphasis 0
requested signal parameters: lane 0 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 3.5dB
using signal parameters: voltage 0.4V pre_emph 3.5dB
requested signal parameters: lane 0 voltage 0.4V pre_emph 6dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 6dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 6dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 6dB
using signal parameters: voltage 0.4V pre_emph 6dB
requested signal parameters: lane 0 voltage 0.4V pre_emph 0dB
requested signal parameters: lane 1 voltage 0.4V pre_emph 0dB
requested signal parameters: lane 2 voltage 0.4V pre_emph 0dB
requested signal parameters: lane 3 voltage 0.4V pre_emph 0dB
using signal parameters: voltage 0.4V pre_emph 0dB
channel eq at voltage 0 pre-emphasis 0
config video failed
rk_vop_probe() Device failed: ret=-110
The "config video failed" error also goes away when I disable higher
log levels, and it claims to have successfully probed the device.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>
The EDP_LCDC_SEL bit has to be set correctly to select vop0 or
vop1, but so far we have set it in both conditions, which is not
correct.
Can someone verify this is the correct way round? vop1 -> set,
vop0 -> clear?
Signed-off-by: Patrick Wildt <patrick@blueri.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Use ofnode_ or dev_ APIs instead of fdt_ and fdtdec_ APIs so that the
driver can support live DT.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The rk_edp.c and rk_lvds.c files reference rk_setreg which is declared in
hardware.h so include it so the drivers build. Adjust rk_lvds.c so
includes are in alphabetical order while updating.
Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Tested-by: Vagrant Cascadian <vagrant@debian.org>
At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.
Move the compatibility features into a separate header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common
header file path, so that we can get the correct path directly.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.
Signed-off-by: Tom Rini <trini@konsulko.com>
Add remove() methods for EDP and VOP so that U-Boot can shut down the
video on exit. This avoids leaving DMA running while booting Linux which
can cause problems if Linux uses the frame buffer for something else.
It also makes it clear what is needed to shut down video.
While we are here, make rkvop_enable() static.
Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Anatolij Gustschin <agust@denx.de>
Squashed in 'rockchip: video: fix taking the VOP device out of standby':
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.
In the end we will have:
1. dev_read_addr...() - works on devices, supports flat/live tree
2. devfdt_get_addr...() - current functions, flat tree only
3. of_get_address() etc. - new functions, live tree only
All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.
Note this involves changing some dead code - the imx_lpi2c.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
The following changes are made to the clock API:
* The concept of "clocks" and "peripheral clocks" are unified; each clock
provider now implements a single set of clocks. This provides a simpler
conceptual interface to clients, and better aligns with device tree
clock bindings.
* Clocks are now identified with a single "struct clk", rather than
requiring clients to store the clock provider device and clock identity
values separately. For simple clock consumers, this isolates clients
from internal details of the clock API.
* clk.h is split so it only contains the client/consumer API, whereas
clk-uclass.h contains the provider API. This aligns with the recently
added reset and mailbox APIs.
* clk_ops .of_xlate(), .request(), and .free() are added so providers
can customize these operations if needed. This also aligns with the
recently added reset and mailbox APIs.
* clk_disable() is added.
* All users of the current clock APIs are updated.
* Sandbox clock tests are updated to exercise clock lookup via DT, and
clock enable/disable.
* rkclk_get_clk() is removed and replaced with standard APIs.
Buildman shows no clock-related errors for any board for which buildman
can download a toolchain.
test/py passes for sandbox (which invokes the dm clk test amongst
others).
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Some Rockchip SoCs support embedded DisplayPort output. Add a display driver
for this so that these displays can be used on supported boards.
Signed-off-by: Simon Glass <sjg@chromium.org>
