Set number of lanes and link width speed control register based on the
num-lanes property.
Code imported almost 1:1 from dw_pcie_setup in mainline linux.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The Root Complex BARs default to claim the full 1 GiB memory region on
RK3568, leaving no space for any attached device.
Fix this by disable the unused BAR 0 and BAR 1 of the RC.
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
[jonas@kwiboo.se: Move to rk_pcie_configure and use PCI_BASE_ADDRESS_0/1 const]
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Use a similar pattern and delay values as the linux mainline driver to
speed up failing when nothing is connected.
Reduce fail speed from around 5+ seconds down to around one second on a
Radxa ROCK 3 Model A, where pcie2x1 is probed before pcie3x2 M2 slot.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The vpcie3v3 regulator is typically a fixed regulator controlled using
gpio. Change to use enable and disable calls on the regulator instead
of trying to set a voltage value.
Also remove the delay to match linux driver, for a fixed regulator the
startup-delay-us prop can be used in case a startup delay is needed.
Limited testing on ROCK 3A, ROCK 5B, Quartz64, Odroid-M1 has shown that
this delay was not needed.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Get the config region to use from the reg prop. Also update the
referenced region index used in comment.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Add support for max_link_speed specified in the PCI DT binding.
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
[eugen.hristev@collabora.com: port to latest API, set default correctly,
align to 80 chars]
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
[jonas@kwiboo.se: switch to dev_read_u32_default]
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Implement a resource release mechanism on failing probe.
Without this, a strange situation can happen e.g. when init port fails,
or attempting to get the PHY fails, because the gpios have been
requested first, and if the user tries to do 'pci enum' again, the
driver will fail with 'can't find reset gpios' even if the gpios are
there, just because they were blocked by a previous probe attempt.
It is only natural to release the acquired resources if the probe fails,
just for consistency if nothing else.
This way on subsequent probe attempts, the user will get the same error
message, and not something different that doesn't make sense.
Signed-off-by: Eugen Hristev <eugen.hristev@collabora.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The fdt_addr_t and phys_addr_t size have been decoupled. A 32bit CPU
can expect 64-bit data from the device tree parser, so use
dev_read_addr_index_ptr instead of the dev_read_addr_index function
in the various files in the drivers directory that cast to a pointer.
As we are there also streamline the error response to -EINVAL on return.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Replace msleep occurences by udelay.
drivers/pci/pcie_dw_rockchip.c:254:3: warning: implicit
declaration of function 'msleep' [-Wimplicit-function-declaration]
Cc: Patrick Wildt <patrick@blueri.se>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Use the generic error number instead of specific error number.
Changes fix the below error.
drivers/pci/pcie_dw_rockchip.c: In function 'rk_pcie_read':
drivers/pci/pcie_dw_rockchip.c:70:10: error: 'PCIBIOS_UNSUPPORTED'
undeclared (first use in this function)
70 | return PCIBIOS_UNSUPPORTED;
| ^~~~~~~~~~~~~~~~~~~
drivers/pci/pcie_dw_rockchip.c: In function 'rk_pcie_write':
drivers/pci/pcie_dw_rockchip.c:90:10: error: 'PCIBIOS_UNSUPPORTED'
undeclared (first use in this function)
90 | return PCIBIOS_UNSUPPORTED;
| ^~~~~~~~~~~~~~~~~~~
Cc: Patrick Wildt <patrick@blueri.se>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Patrick Wildt <patrick@blueri.se>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Move this out of the common header and include it only where needed. In
a number of cases this requires adding "struct udevice;" to avoid adding
another large header or in other cases replacing / adding missing header
files that had been pulled in, very indirectly. Finally, we have a few
cases where we did not need to include <asm/global_data.h> at all, so
remove that include.
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Add Rockchip dwc based PCIe controller driver for rk356x platform.
Driver support Gen3 by operating as a Root complex.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang<kever.yang@rock-chips.com>
