Skip to content

arm64: dts: bcm2712-rpi: Add uart0_dma parameter #6838

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
pelwell merged 1 commit into from
May 6, 2025
Merged

arm64: dts: bcm2712-rpi: Add uart0_dma parameter #6838

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
3 changes: 3 additions & 0 deletions arch/arm/boot/dts/overlays/README
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -460,6 +460,9 @@ Params:
6, 8 and 10 of the 40-way header (2712 only,
default "off")

uart0_dma Enable DMA usage on UART0 (2712 only, default
"off")

uart1 Set to "on" or "off" to enable or disable uart1
(default varies)

Expand Down
5 changes: 5 additions & 0 deletions arch/arm64/boot/dts/broadcom/bcm2712-rpi.dtsi
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -220,6 +220,11 @@ pio: &rp1_pio {
suspend = <&pwr_key>, "linux,code:0=205";
uart0 = <&uart0>, "status";
uart0_console = <&uart0>,"status", <&aliases>, "console=",&uart0;
uart0_dma = <&uart0>,"dmas:0=",<&rp1_dma>,
<&uart0>,"dmas:4=",<RP1_DMA_UART0_TX>,
<&uart0>,"dmas:8=",<&rp1_dma>,
<&uart0>,"dmas:12=",<RP1_DMA_UART0_RX>,
<&uart0>,"dma-names[=747800727800"; // "tx", "rx"
wifiaddr = <&wifi>, "local-mac-address[";

cam0_reg = <&cam0_reg>,"status";
Expand Down