linux-kernel - Re: [PATCH v2 0/2] Enable 1GHz OPP am335x-bonegreen-eco

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Message-ID: <76078ce8-aec3-4a3c-b866-926fc284692e@ti.com>
Date: Fri, 7 Nov 2025 15:25:06 -0600
From: Shree Ramamoorthy <s-ramamoorthy@...com>
To: "Kory Maincent (TI.com)" <kory.maincent@...tlin.com>, Aaro Koskinen
	<aaro.koskinen@....fi>, Andreas Kemnade <andreas@...nade.info>, Kevin Hilman
	<khilman@...libre.com>, Roger Quadros <rogerq@...nel.org>, Tony Lindgren
	<tony@...mide.com>, Lee Jones <lee@...nel.org>, Rob Herring
	<robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
	<conor+dt@...nel.org>
CC: Andrew Davis <afd@...com>, Bajjuri Praneeth <praneeth@...com>, "Thomas
 Petazzoni" <thomas.petazzoni@...tlin.com>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<stable@...r.kernel.org>
Subject: Re: [PATCH v2 0/2] Enable 1GHz OPP am335x-bonegreen-eco

Hi Kory,

On 11/6/2025 4:49 AM, Kory Maincent (TI.com) wrote:
> The vdd_mpu regulator maximum voltage was previously limited to 1.2985V,
> which prevented the CPU from reaching the 1GHz operating point. This
> limitation was put in place because voltage changes were not working
> correctly, causing the board to stall when attempting higher frequencies.
> Increase the maximum voltage to 1.3515V to allow the full 1GHz OPP to be
> used.
>
> Add a TPS65219 PMIC driver fixes that properly implement the LOCK register
> handling, to make voltage transitions work reliably.
>
> Changes in v2:
> - Setup a custom regmap_bus only for the TPS65214 instead of checking
>   the chip_id every time reg_write is called.
> - Add the am335x-bonegreen-eco devicetree change in the same patch
>   series.

Reviewed-by: Shree Ramamoorthy <s-ramamoorthy@...com>

>
> Signed-off-by: Kory Maincent (TI.com) <kory.maincent@...tlin.com>
> ---
> Kory Maincent (TI.com) (2):
>       mfd: tps65219: Implement LOCK register handling for TPS65214
>       ARM: dts: am335x-bonegreen-eco: Enable 1GHz OPP by increasing vdd_mpu voltage
>
>  arch/arm/boot/dts/ti/omap/am335x-bonegreen-eco.dts |  2 +-
>  drivers/mfd/tps65219.c                             | 51 +++++++++++++++++++++-
>  include/linux/mfd/tps65219.h                       |  2 +
>  3 files changed, 53 insertions(+), 2 deletions(-)
> ---
> base-commit: 1c353dc8d962de652bc7ad2ba2e63f553331391c
> change-id: 20251106-fix_tps65219-dd62141d22cf
>
> Best regards,