[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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