[PATCH] ARM: dts: stm32: Move DHCOR BUCK3 VDD 2V9 adjustment to 1V8 DTSI

Patrick DELAUNAY patrick.delaunay at foss.st.com
Fri May 6 10:42:30 CEST 2022


Hi,

On 5/4/22 14:50, Marek Vasut wrote:
> The Buck3 on DHCOR is used to supply IO voltage. It can output either 3V3
> in the default DHCOR configuration, or 2V9 in case of AV96 DHCOR variant
> which has extra Empirion DCDC converter in front of the 1V8 IO supply, or
> outright 1V8 in case of 1V8 IO DHCOR without the Empirion DCDC converter.
>
> The 2V9 mode in case of AV96 DHCOR variant is used to reduce unnecessarily
> high input voltage to the Empirion DCDC converter, so move it into matching
> DTSI to stop confusing users.
>
> Signed-off-by: Marek Vasut <marex at denx.de>
> Cc: Patrice Chotard <patrice.chotard at foss.st.com>
> Cc: Patrick Delaunay <patrick.delaunay at foss.st.com>
> ---
>   arch/arm/dts/stm32mp15xx-dhcor-io1v8.dtsi | 5 +++++
>   arch/arm/dts/stm32mp15xx-dhcor-som.dtsi   | 4 ++--
>   2 files changed, 7 insertions(+), 2 deletions(-)
>

Reviewed-by: Patrick Delaunay <patrick.delaunay at foss.st.com>

Thanks
Patrick





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