linux-kernel - [PATCH 0/3] genpd: imx8: support multiple states

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Message-Id: <20230913-multiple-state-scu-v1-0-9d91c6904ffa@nxp.com>
Date:   Wed, 13 Sep 2023 10:05:35 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Kevin Hilman <khilman@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Dong Aisheng <aisheng.dong@....com>,
        Peng Fan <peng.fan@....com>
Subject: [PATCH 0/3] genpd: imx8: support multiple states

Patch 1 & 2 are for common code.
Patch 3 is almost same as https://lore.kernel.org/all/20230814104127.1929-8-peng.fan@oss.nxp.com/
For patch 3, I thought of using QoS constraint in the clk-scu driver,
but the clk-scu not support runtime pm, and using simple_qos_governer
would introduce complexity for current SCU Power domain, and the SCU
power domain not only used by clk-scu, but also used by other devices.
So keep current design as NXP downstream which has passed several
rounds LTS releases.

Patch 1&2 has been in NXP LTS for quite some time and pass through
several releases. patch 3 is an update of NXP downstream patch.

---
Dong Aisheng (2):
      PM / Domains: Support enter deepest state for multiple states domains
      PM / Domains: Choose the deepest state to enter if no devices using it

Peng Fan (1):
      genpd: imx: scu-pd: add multi states support

 drivers/base/power/domain.c | 22 +++++++++++++++++++++-
 drivers/genpd/imx/scu-pd.c  | 42 ++++++++++++++++++++++++++++++++++++++++--
 include/linux/pm_domain.h   |  1 +
 3 files changed, 62 insertions(+), 3 deletions(-)
---
base-commit: 3c13c772fc233a10342c8e1605ff0855dfdf0c89
change-id: 20230913-multiple-state-scu-8ddcb0373d3c

Best regards,
-- 
Peng Fan <peng.fan@....com>