linux-kernel - Re: [PATCH v2] PCI: qcom: add runtime pm support to pcie

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Message-ID: <30d3e568-4e17-4991-70d6-e86e10ef4dea@mm-sol.com>
Date:   Wed, 23 May 2018 16:54:31 +0300
From:   Stanimir Varbanov <svarbanov@...sol.com>
To:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        lorenzo.pieralisi@....com, bhelgaas@...gle.com
Cc:     linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        bjorn.andersson@...aro.org, vkoul@...nel.org
Subject: Re: [PATCH v2] PCI: qcom: add runtime pm support to pcie_port

Hi Srini,

On 05/23/2018 01:44 PM, Srinivas Kandagatla wrote:
> This patch is required when the pcie controller sits on a bus with
> its own power domain and clocks which are controlled via a bus driver
> like simple pm bus. As these bus driver have runtime pm enabled, it makes
> sense to update the usage counter so that the runtime pm does not suspend
> the clks or power domain associated with the bus driver.
> 
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> ---
>  drivers/pci/dwc/pcie-qcom.c | 9 ++++++++-
>  1 file changed, 8 insertions(+), 1 deletion(-)

Acked-by: Stanimir Varbanov <svarbanov@...sol.com>

-- 
regards,
Stan