The Qualcomm device trees in U-Boot are currently not consistent with
the upstream DTs used in the Linux kernel. While some bindings are
similar to the official specification in the Linux kernel, several
nodes have subtle differences, e.g. the "compatible"s or the exact
specification of memory registers.
This means that some of the Qualcomm-related U-Boot drivers are not
compatible with the Linux DT (and vice versa).
The SPMI node is one such example: the "core" region starts at
0x0200f000 in the upstream Linux MSM8916 DT, but in U-Boot it starts at
0x0200f800. The end result is normally the same, since the Linux SPMI
driver simply adds the 0x800 internally.
However, commit f5a2d6b4b0 ("spmi: msm: add arbiter version 5
support") imported this behavior into the U-Boot driver, without
adjusting the DB410c/DB820c device trees. This means that the 0x800
offset is now added twice, breaking all SPMI read/write operations:
Failed to find PMIC pon node. Check device tree
Failed to find pm8916_gpios@c000 node.
USB init failed: -6
starting USB...
Bus ehci@78d9000: Failed to find pm8916_gpios@c000 node.
probe failed, error -6
No working controllers found
While the mistake is strictly speaking in the spmi-msm driver, fix the
issue by making the SPMI nodes in the DB410c/DB820c consistent with the
upstream Linux DT instead.
Ideally we should even go a step further by fixing the remaining uses
of custom bindings in the U-Boot drivers and moving to using the Linux
DTs as-is. This would likely avoid such mistakes in the future and
would also make the porting process much easier.
Cc: Dzmitry Sankouski <dsankouski@gmail.com>
Fixes: f5a2d6b4b0 ("spmi: msm: add arbiter version 5 support")
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
* Add pinctrl node for TLMM and add mux request for uart node.
* Rename uart to the actual board uart port.
* Fix indentendation of sdhc2 node.
Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
The missing clock causes serial_msm driver probe to fail.
Added a dummy node so the probe succeeds, as the clock init
currently in db820c is empty.
Fixes: 11d59fe537 ("serial: serial_msm: fail probe if settings clocks fails")
Signed-off-by: Ramon Fried <ramon.fried@gmail.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>
This commit adds support for 96Boards Dragonboard820C.
The board is based on APQ8086 Qualcomm Soc, complying with the
96Boards specification.
Features
- 4x Kyro CPU (64 bit) up to 2.15GHz
- USB2.0
- USB3.0
- ISP
- Qualcomm Hexagon DSP
- SD 3.0 (UHS-I)
- UFS 2.0
- Qualcomm Adreno 530 GPU
- GPS
- BT 4.2
- Wi-Fi 2.4GHz, 5GHz (802.11ac)
- PCIe 2.0
- MIPI-CSI, MIPI-DSI
- I2S
U-Boot boots chained from LK (LK implements the fastboot protocol) in
64-bit mode.
For detailed build instructions see readme.txt in the board directory.
Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
