linux-kernel - Re: [PATCH] scsi: ufs: exynos: fsd: Gate ref_clk and put UFS device in reset on suspend

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Message-ID: <f8672cb8-f6ec-4eed-9c0b-4f4806cca79b@acm.org>
Date: Thu, 28 Aug 2025 06:35:53 -0700
From: Bart Van Assche <bvanassche@....org>
To: Bharat Uppal <bharat.uppal@...sung.com>, linux-scsi@...r.kernel.org,
 linux-kernel@...r.kernel.org, James.Bottomley@...senPartnership.com,
 martin.petersen@...cle.com, alim.akhtar@...sung.com, avri.altman@....com,
 linux-samsung-soc@...r.kernel.org
Cc: pankaj.dubey@...sung.com, aswani.reddy@...sung.com,
 Nimesh Sati <nimesh.sati@...sung.com>
Subject: Re: [PATCH] scsi: ufs: exynos: fsd: Gate ref_clk and put UFS device
 in reset on suspend

On 8/20/25 10:39 PM, Bharat Uppal wrote:
> On FSD platform, gating the reference clock (ref_clk) and putting the
> UFS device in reset by asserting the reset signal during UFS suspend,
> improves the power savings and ensures the PHY is fully turned off.
> 
> These operations are added as FSD specific suspend hook to avoid
> unintended side effects on other SoCs supported by this driver.

Reviewed-by: Bart Van Assche <bvanassche@....org>