linux-kernel - Re: [PATCH v4 3/4] ufs: host: Add ICE clock scaling during UFS clock changes

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Message-ID: <yvvdockkj47mvoqtxjd4dgysejpkqvoo2vqsnpw2chr46ugtx3@3cgasvkd62kz>
Date: Wed, 28 Jan 2026 19:29:06 +0530
From: Manivannan Sadhasivam <mani@...nel.org>
To: Abhinaba Rakshit <abhinaba.rakshit@....qualcomm.com>
Cc: Bjorn Andersson <andersson@...nel.org>, 
	Konrad Dybcio <konradybcio@...nel.org>, "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>, 
	"Martin K. Petersen" <martin.petersen@...cle.com>, Neeraj Soni <neeraj.soni@....qualcomm.com>, 
	Herbert Xu <herbert@...dor.apana.org.au>, "David S. Miller" <davem@...emloft.net>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-scsi@...r.kernel.org, linux-crypto@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v4 3/4] ufs: host: Add ICE clock scaling during UFS clock
 changes

On Wed, Jan 28, 2026 at 02:16:42PM +0530, Abhinaba Rakshit wrote:
> Implement ICE (Inline Crypto Engine) clock scaling in sync with
> UFS controller clock scaling. This ensures that the ICE operates at
> an appropriate frequency when the UFS clocks are scaled up or down,
> improving performance and maintaining stability for crypto operations.
> 
> Signed-off-by: Abhinaba Rakshit <abhinaba.rakshit@....qualcomm.com>

Acked-by: Manivannan Sadhasivam <mani@...nel.org>

- Mani

> ---
>  drivers/ufs/host/ufs-qcom.c | 17 +++++++++++++++++
>  1 file changed, 17 insertions(+)
> 
> diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c
> index 8d119b3223cbdaa3297d2beabced0962a1a847d5..00cb9cde760380e7e4213095b9c66657a23b13ee 100644
> --- a/drivers/ufs/host/ufs-qcom.c
> +++ b/drivers/ufs/host/ufs-qcom.c
> @@ -305,6 +305,15 @@ static int ufs_qcom_ice_prepare_key(struct blk_crypto_profile *profile,
>  	return qcom_ice_prepare_key(host->ice, lt_key, lt_key_size, eph_key);
>  }
>  
> +static int ufs_qcom_ice_scale_clk(struct ufs_qcom_host *host, unsigned long target_freq,
> +				  bool scale_up, unsigned int flags)
> +{
> +	if (host->hba->caps & UFSHCD_CAP_CRYPTO)
> +		return qcom_ice_scale_clk(host->ice, target_freq, scale_up, flags);
> +
> +	return 0;
> +}
> +
>  static const struct blk_crypto_ll_ops ufs_qcom_crypto_ops = {
>  	.keyslot_program	= ufs_qcom_ice_keyslot_program,
>  	.keyslot_evict		= ufs_qcom_ice_keyslot_evict,
> @@ -339,6 +348,12 @@ static void ufs_qcom_config_ice_allocator(struct ufs_qcom_host *host)
>  {
>  }
>  
> +static int ufs_qcom_ice_scale_clk(struct ufs_qcom_host *host, unsigned long target_freq,
> +				  bool scale_up, unsigned int flags)
> +{
> +	return 0;
> +}
> +
>  #endif
>  
>  static void ufs_qcom_disable_lane_clks(struct ufs_qcom_host *host)
> @@ -1646,6 +1661,8 @@ static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, bool scale_up,
>  		else
>  			err = ufs_qcom_clk_scale_down_post_change(hba, target_freq);
>  
> +		if (!err)
> +			err = ufs_qcom_ice_scale_clk(host, target_freq, scale_up, 0);
>  
>  		if (err) {
>  			ufshcd_uic_hibern8_exit(hba);
> 
> -- 
> 2.34.1
> 

-- 
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