The GPIO bank name for banks J and K are not correct when using the
'gpio' command from the console.
The driver derives the bank name from the device tree instance string by
using the instance value and adding 'A': gpio0@xxaddrxx is Bank A,
gpio1@yyaddryy is Bank B and so on.
On the PIC32, there is no Bank I so instances 8 and 9 need to be
incremented as a minimum change.
An alternative (less opaque) implementation would be to use a bank-name
property instead but this would require modifying the driver code too.
Signed-off-by: John Robertson <john.robertson@simiatec.com>
GPIO state cannot be changed via the device tree (e.g. with gpio-hog) or
using the 'gpio' command from the console.
The root cause is a discrepancy between the driver and the device tree:
the driver code expects an absolute I/O address in the <reg> property,
while the device tree defines the address relative to a declaration in
the parent pinctrl node.
Changing the device tree to fix a driver issue would normally be wrong,
however:
- I have run the first version of U-Boot in which this driver appears
(v2016.03) and the same problem exists, so this is not a regression;
- There is no code that references a parent device tree node that might
suggest the intent of the author was to parse the DT as it exists now;
- The equivalent Linux PIC32 GPIO driver also uses absolute addresses
for the GPIO <reg> property. This change brings the U-Boot DT more
into line with Linux.
Additionally, the data sheet (Microchip ref. 60001361H) shows that the
register set to control a GPIO bank spans 0xE0 bytes, but the device
tree specified size is only 0x48 bytes.
Signed-off-by: John Robertson <john.robertson@simiatec.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 adds ethernet, TFTP support for PIC32MZ[DA] Starter Kit. Also
custom environment variables/scripts are added to help boot from network.
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Enable MMC, SDHCI, FAT_FS support for PIC32MZ[DA] StarterKit.
Also add custom scripts, rules to boot Linux from microSD card.
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
