linux-kernel - Re: [PATCH v5 RESEND] drivers: bus: simple-pm-bus: Use clocks

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Message-ID: <ad986189-4ecb-5c03-a0a7-b5d91d4ae37f@inbox.ru>
Date:   Wed, 18 Jan 2023 09:18:36 +0300
From:   Maxim Kochetkov <fido_max@...ox.ru>
To:     Liu Ying <victor.liu@....com>, linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, geert+renesas@...der.be,
        saravanak@...gle.com, linux-imx@....com, greg@...ah.com,
        arnd@...db.de
Subject: Re: [PATCH v5 RESEND] drivers: bus: simple-pm-bus: Use clocks



On 26.12.2022 06:14, Liu Ying wrote:
> Simple Power-Managed bus controller may need functional clock(s)
> to be enabled before child devices connected to the bus can be
> accessed.  Get the clock(s) as a bulk and enable/disable the
> clock(s) when the bus is being power managed.
> 
> One example is that Freescale i.MX8qxp pixel link MSI bus controller
> needs MSI clock and AHB clock to be enabled before accessing child
> devices.
> 
> Signed-off-by: Liu Ying <victor.liu@....com>
Tested-by: Maxim Kochetkov <fido_max@...ox.ru>