linux-kernel - Re: [PATCH v7 0/7] firmware: support i.MX95 SCMI BBM/MISC Extenstion

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Message-ID: <Zqoz6RVcvNLEh2UT@bogus>
Date: Wed, 31 Jul 2024 13:54:01 +0100
From: Sudeep Holla <sudeep.holla@....com>
To: "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc: Cristian Marussi <cristian.marussi@....com>,
	Rob Herring <robh@...nel.org>, Sudeep Holla <sudeep.holla@....com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Peng Fan <peng.fan@....com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	arm-scmi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	imx@...ts.linux.dev, linux-rtc@...r.kernel.org,
	linux-input@...r.kernel.org
Subject: Re: [PATCH v7 0/7] firmware: support i.MX95 SCMI BBM/MISC Extenstion

On Wed, Jul 31, 2024 at 08:56:04PM +0800, Peng Fan (OSS) wrote:
> i.MX95 System Manager Firmware source: https://github.com/nxp-imx/imx-sm
> To generate html from the repo: make html
>
> i.MX95 System Manager Firmware support vendor extension protocol:
> - Battery Backed Module(BBM) Protocol
>   This protocol is intended provide access to the battery-backed module.
>   This contains persistent storage (GPR), an RTC, and the ON/OFF button.
>   The protocol can also provide access to similar functions implemented via
>   external board components. The BBM protocol provides functions to:
>
>   - Describe the protocol version.
>   - Discover implementation attributes.
>   - Read/write GPR
>   - Discover the RTCs available in the system.
>   - Read/write the RTC time in seconds and ticks
>   - Set an alarm (per LM) in seconds
>   - Get notifications on RTC update, alarm, or rollover.
>   - Get notification on ON/OFF button activity.
>
> - MISC Protocol for misc settings
>   This includes controls that are misc settings/actions that must be
>   exposed from the SM to agents. They are device specific and are usually
>   define to access bit fields in various mix block control modules,
>   IOMUX_GPR, and other GPR/CSR owned by the SM.
>   This protocol supports the following functions:
>
>   - Describe the protocol version.
>   - Discover implementation attributes.
>   - Set/Get a control.
>   - Initiate an action on a control.
>   - Obtain platform (i.e. SM) build information.
>   - Obtain ROM passover data.
>   - Read boot/shutdown/reset information for the LM or the system.
>
> This patchset is to support the two protocols and users that use the
> protocols. The upper protocol infomation is also included in patch 1
>
> Signed-off-by: Peng Fan <peng.fan@....com>
>
> Changes in v7:
> - Just correct R-b tag from Rob to drop quotes "", and rebased
> - Link to v6: https://lore.kernel.org/r/20240718-imx95-bbm-misc-v2-v6-0-18f008e16e9d@nxp.com

I specifically asked you to avoid re-spinning just for this reason within
20 mins from your response, yet you managed to churn it within that time 🙁.
I must respond at flash speed to avoid such things in the future 😢.

--
Regards,
Sudeep