github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-01 02:53:36 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

arm64: zynqmp: Add output-enable pins to SOMs

Browse Source 
Now that the zynqmp pinctrl driver supports the tri-state registers, make
sure that the pins requiring output-enable are configured appropriately for
SOMs.

Without it, all tristate setting for MIOs, which are not related to SOM
itself, are using default configuration which is not correct setting.
It means SDs, USBs, ethernet, etc. are not working properly.

In past it was fixed through calling tristate configuration via bootcmd:
usb_init=mw 0xFF180208 2020
kv260_gem3=mw 0xFF18020C 0xFC0 && gpio toggle gpio@ff0a000038 && \
  gpio toggle gpio@ff0a000038

Signed-off-by: Neal Frager <neal.frager@amd.com>
Link: https://lore.kernel.org/r/9270938b48c8939ac5dca4ac2c59f1c4a8c564d8.1704728353.git.michal.simek@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
Neal Frager 2024-01-08 16:39:13 +01:00 committed by Michal Simek
parent 5710ea6a90
commit 34e48901e7
2 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revA.dtso
View File

@ -185,6 +185,7 @@ conf-rx {
conf-tx {
pins = "MIO36";
bias-disable;
output-enable;
};
mux {
@ -236,6 +237,7 @@ conf-rx {
conf-bootstrap {
pins = "MIO71", "MIO73", "MIO75";
bias-disable;
output-enable;
low-power-disable;
};
@ -243,6 +245,7 @@ conf-tx {
pins = "MIO64", "MIO65", "MIO66",
"MIO67", "MIO68", "MIO69";
bias-disable;
output-enable;
low-power-enable;
};
@ -251,6 +254,7 @@ conf-mdio {
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
output-enable;
};
mux-mdio {
@ -281,6 +285,7 @@ conf-tx {
pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
"MIO60", "MIO61", "MIO62", "MIO63";
bias-disable;
output-enable;
drive-strength = <4>;
slew-rate = <SLEW_RATE_SLOW>;
};

5
arch/arm64/boot/dts/xilinx/zynqmp-sck-kv-g-revB.dtso
View File

@ -168,6 +168,7 @@ conf-rx {
conf-tx {
pins = "MIO36";
bias-disable;
output-enable;
};
mux {
@ -219,6 +220,7 @@ conf-rx {
conf-bootstrap {
pins = "MIO71", "MIO73", "MIO75";
bias-disable;
output-enable;
low-power-disable;
};
@ -226,6 +228,7 @@ conf-tx {
pins = "MIO64", "MIO65", "MIO66",
"MIO67", "MIO68", "MIO69";
bias-disable;
output-enable;
low-power-enable;
};
@ -234,6 +237,7 @@ conf-mdio {
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
bias-disable;
output-enable;
};
mux-mdio {
@ -264,6 +268,7 @@ conf-tx {
pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
"MIO60", "MIO61", "MIO62", "MIO63";
bias-disable;
output-enable;
drive-strength = <4>;
slew-rate = <SLEW_RATE_SLOW>;
};