On 16/08/2026 18:41, Ferass El Hafidi wrote:
(didn't mean for this to be off-list sorry about that)
On Sun, 16 Aug 2026 10:42, Lucas Tanure <[email protected] mailto:tanure@l=
inux.com > wrote:
On 10/08/2026 15:01, Ferass El Hafidi wrote:
On Thu, 06 Aug 2026 10:18, "Lucas Tanure via groups.io"=C2=A0
<[email protected] mailto:[email protected] > wrote:
The S4-generation UART (S4, T7, ...) derives its baud rate from the
24 MHz crystal divided by 2, selected via the XTAL_DIV2 bit in the
baud rate register, while older SoCs divide the crystal by 3. Add the
"amlogic,meson-s4-uart" compatible with driver data selecting the
div-by-2 scheme, matching the Linux driver (meson_s4_uart_data) and
the configuration the vendor BL2 programs on T7 hardware.
Older SoCs keep the existing div-by-3 behaviour: Linux also uses
div-by-2 on G12A, but both modes work there and switching would risk
regressing boards that have shipped with div-by-3 for years.
Also drain the transmitter before changing the baud rate so in-flight
characters are not garbled, as the Linux driver does.
Assisted-by: Claude:claude-fable-5
=C2=A0
As I understand it, LLM-assisted patches are not welcome in U-Boot rig=
ht
now: https://lore.kernel.org/u-boot/20260515220758.GM1858239@bill-the-=
cat/
=C2=A0
AFAIK there isn't an official AI policy yet, but it seems the concensu=
s
on that matter is currently "please don't". Sorry.
Ok, I will drop this line.
Please do not drop this line. I appreciate the transparency towards your
use of AI. I would wait for someone more knowlegable about AI use
discussions to reply.
Ok, I will reply with v2 with all comments fixes and keeping the Ai
line. And I wait for the Ai talk.
Best regards,
Ferass
Thanks
Lucas
