Thread (3 messages) 3 messages, 2 authors, 2017-08-29
DORMANTno replies

[PATCH 1/1] ARM: imx7ulp: add cpuidle support

From: aisheng.dong@nxp.com (A.s. Dong)
Date: 2017-08-29 09:32:40
Also in: linux-pm

-----Original Message-----
From: Daniel Lezcano [mailto:daniel.lezcano at linaro.org]
Sent: Tuesday, August 29, 2017 4:30 PM
To: A.s. Dong; linux-pm at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org; rjw at rjwysocki.net;
shawnguo at kernel.org; Anson Huang
Subject: Re: [PATCH 1/1] ARM: imx7ulp: add cpuidle support

On 27/08/2017 15:43, Dong Aisheng wrote:
quoted
i.MX7ULP support 3 levels idle as below:
1. patial stop mode 3;
2. patial stop mode 2;
3. patial stop mode 1.

PSTOP1 - Partial Stop with system and bus clock disabled
PSTOP2 - Partial Stop with system clock disabled and bus clock enabled
PSTOP3 - Partial Stop with system clock enabled and bus clock enabled

For PSTOP 1/2 mode, as the system and bus clock will be disabled, the
devices working inprogress may not be able to work anymore, driver
needs to use pm_qos API to prevent system enter those modes.

Cc: "Rafael J. Wysocki" <redacted>
Cc: Daniel Lezcano <redacted>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Anson Huang <redacted>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
Acked-by: Daniel Lezcano <redacted>

Will you consider in the future to move the driver to a DT based
description and to the cpuidle-arm driver ?
Thanks for the suggestion.
I will investigate it later when I'm free.

Shawn,
This is based on the former imx7ulp arch patch series.
Will notify you once they're merged.

Regards
Dong Aisheng
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