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It is more correct to avoid touching the device tree in the probe() method.
Update the driver to work this way. Note that only SPL needs to fiddle with
the SDRAM registers, so decoding the platform data fully is not necessary in
U-Boot proper.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add an extra byte so that this data is not byteswapped. Add a comment to
the code to explain the purpose.
Signed-off-by: Simon Glass <sjg@chromium.org>
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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>
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Add definitions for GRF_SOC_CON1 and GRF_SOC_CON3 which contain various
GMAC related fields.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Simon Glass <sjg@chromium.org>
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Setup the clocks for the gmac ethernet interface. This assumes the mac
clock is fed by an external clock which is common on RK3288 based
devices.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Simon Glass <sjg@chromium.org>
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LVDS have a different display out mode, add code to get right flag.
The vop_ip decide display device and the remote_vop_id decide which
vop was being used. So we should use the remote_vop_id to set DCLK_VOP.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Acked-by: Simon Glass <sjg@chromium.org>
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Some Rockchip SoCs support LVDS output. Add a display driver for this so
that these displays can be used on supported boards.
Signed-off-by: Jacob Chen <jacob-chen@iotwrt.com>
Acked-by: Simon Glass <sjg@chromium.org>
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Add a feature which speeds up the CPU to full speed in SPL to minimise
boot time. This is only supported for certain boards (at present only
jerry).
Signed-off-by: Simon Glass <sjg@chromium.org>
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These work reasonable well, but there are a few errors:
- Brackets should be used to avoid unexpected side-effects
- When setting bits, the corresponding upper 16 bits should be set also
Signed-off-by: Simon Glass <sjg@chromium.org>
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Some rockchip SoCs include video output (VOP). Add a driver to support this.
It can output via a display driver (UCLASS_DISPLAY) and currently HDMI and
eDP are supported.
Signed-off-by: Simon Glass <sjg@chromium.org>
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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>
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Some Rockchip SoCs support HDMI output. Add a display driver for this so
that these displays can be used on supported boards.
Unfortunately this driver is not fully functional. It cannot reliably read
EDID information over HDMI. This seems to be due to the clocks being
incorrect - the I2C bus speed appears to be up to 100x slower than the
clock settings indicate. The root cause may be in the clock logic.
Signed-off-by: Simon Glass <sjg@chromium.org>
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These should match the datasheet naming. Adjust them.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add a simple driver which implements the standard PWM uclass interface.
Signed-off-by: Simon Glass <sjg@chromium.org>
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The current approach of using uclass_get_device() is error-prone. Another
clock (for example a fixed-clock) may cause it to break. Add a function that
does a proper search.
Signed-off-by: Simon Glass <sjg@chromium.org>
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This is easier to deal with when using generic code since it allows us to
use a register index instead of naming each register.
Adjust it, adding an enum to improve readability.
Signed-off-by: Simon Glass <sjg@chromium.org>
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add rk3036 sdram driver so we can set up sdram in SPL
Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
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add early uart driver so we can print debug message in
SPL stage
Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
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GRF is the gereral register file. Add header files with register definitions.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
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Add a driver for setting up and modifying the various PLLs, peripheral
clocks and mmc clocks on RK3036
Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
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some rockchip soc will not include lib/timer.c in SPL stage,
so implement timer driver for some soc can use us delay function in SPL.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Acked-by: Simon Glass <sjg@chromium.org>
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Add a SPI driver for the Rockchip RK3288, using driver model. It should work
for other Rockchip SoCs also.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add an I2C driver for the Rockchip RK3288, using driver model. It should work
for other Rockchip SoCs also.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add code to set up the SDRAM in SPL, ready for loading U-Boot. This uses
device tree for configuration so should be able to support other RAM
configurations. It may be possible to generalise the code to support other
SoCs at some point.
Signed-off-by: Simon Glass <sjg@chromium.org>
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PMU is the power management unit and GRF is the general register file. Both
are heavily used in U-Boot. Add header files with register definitions.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add a driver for setting up and modifying the various PLLs and peripheral
clocks on the RK3288.
Signed-off-by: Simon Glass <sjg@chromium.org>
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Add header files for the peripherals and clocks supported on Rockchip
platforms. The particular implementation (and register set) for each is
SoC-specific, but it seems that the naming can be generic.
Signed-off-by: Simon Glass <sjg@chromium.org>
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This supports RK3288 at present. It does not implement functions or support
for pull up/down.
Signed-off-by: Simon Glass <sjg@chromium.org>
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