From: "Peter Wang (王信友)" <peter.wang@mediatek.com>
To: "beanhuo@micron.com" <beanhuo@micron.com>,
"avri.altman@wdc.com" <avri.altman@wdc.com>,
"quic_rampraka@quicinc.com" <quic_rampraka@quicinc.com>,
"quic_cang@quicinc.com" <quic_cang@quicinc.com>,
"quic_nguyenb@quicinc.com" <quic_nguyenb@quicinc.com>,
"quic_nitirawa@quicinc.com" <quic_nitirawa@quicinc.com>,
"bvanassche@acm.org" <bvanassche@acm.org>,
"quic_ziqichen@quicinc.com" <quic_ziqichen@quicinc.com>,
"junwoo80.lee@samsung.com" <junwoo80.lee@samsung.com>,
"mani@kernel.org" <mani@kernel.org>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>
Cc: "ahalaney@redhat.com" <ahalaney@redhat.com>,
"neil.armstrong@linaro.org" <neil.armstrong@linaro.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"manivannan.sadhasivam@linaro.org"
<manivannan.sadhasivam@linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"alim.akhtar@samsung.com" <alim.akhtar@samsung.com>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
"James.Bottomley@HansenPartnership.com"
<James.Bottomley@HansenPartnership.com>
Subject: Re: [PATCH v5 5/8] scsi: ufs: core: Enable multi-level gear scaling
Date: Fri, 14 Feb 2025 05:55:23 +0000 [thread overview]
Message-ID: <4985f7a8acf18d0edd5fc68adc90b83f10c2904f.camel@mediatek.com> (raw)
In-Reply-To: <20250213080008.2984807-6-quic_ziqichen@quicinc.com>
On Thu, 2025-02-13 at 16:00 +0800, Ziqi Chen wrote:
>
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
>
>
> From: Can Guo <quic_cang@quicinc.com>
>
> With OPP V2 enabled, devfreq can scale clocks amongst multiple
> frequency
> plans. However, the gear speed is only toggled between min and max
> during
> clock scaling. Enable multi-level gear scaling by mapping clock
> frequencies
> to gear speeds, so that when devfreq scales clock frequencies we can
> put
> the UFS link at the appropriate gear speeds accordingly.
>
> Signed-off-by: Can Guo <quic_cang@quicinc.com>
> Co-developed-by: Ziqi Chen <quic_ziqichen@quicinc.com>
> Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>
> Reviewed-by: Bean Huo <beanhuo@micron.com>
> Reviewed-by: Bart Van Assche <bvanassche@acm.org>
> Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
> ---
>
> v1 -> v2:
> Rename the lable "do_pmc" to "config_pwr_mode".
>
> v2 -> v3:
> Use assignment instead memcpy() in function ufshcd_scale_gear().
>
> v3 -> v4:
> Typo fixed for commit message.
>
> v4 -> v5:
> Change the data type of "new_gear" from 'int' to 'u32'.
> ---
>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
next prev parent reply other threads:[~2025-02-14 5:55 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-13 8:00 [PATCH v5 0/8] Support Multi-frequency scale for UFS Ziqi Chen
2025-02-13 8:00 ` [PATCH v5 1/8] scsi: ufs: core: Pass target_freq to clk_scale_notify() vop Ziqi Chen
2025-02-14 5:52 ` Peter Wang (王信友)
2025-02-13 8:00 ` [PATCH v5 2/8] scsi: ufs: qcom: Pass target_freq to clk scale pre and post change Ziqi Chen
2025-02-14 5:53 ` Peter Wang (王信友)
2025-02-13 8:00 ` [PATCH v5 3/8] scsi: ufs: core: Add a vop to map clock frequency to gear speed Ziqi Chen
2025-02-14 5:54 ` Peter Wang (王信友)
2025-02-13 8:00 ` [PATCH v5 4/8] scsi: ufs: qcom: Implement the freq_to_gear_speed() vop Ziqi Chen
2025-02-14 5:54 ` Peter Wang (王信友)
2025-02-13 8:00 ` [PATCH v5 5/8] scsi: ufs: core: Enable multi-level gear scaling Ziqi Chen
2025-02-14 5:55 ` Peter Wang (王信友) [this message]
2025-04-24 15:35 ` Neil Armstrong
2025-04-25 7:29 ` Ziqi Chen
2025-04-25 7:43 ` neil.armstrong
2025-04-29 10:23 ` Ziqi Chen
2025-04-29 12:25 ` neil.armstrong
2025-02-13 8:00 ` [PATCH v5 6/8] scsi: ufs: core: Check if scaling up is required when disable clkscale Ziqi Chen
2025-02-13 8:00 ` [PATCH v5 7/8] scsi: ufs: core: Toggle Write Booster during clock scaling base on gear speed Ziqi Chen
2025-02-13 8:00 ` [PATCH v5 8/8] ABI: sysfs-driver-ufs: Add missing UFS sysfs attributes Ziqi Chen
2025-02-21 3:13 ` [PATCH v5 0/8] Support Multi-frequency scale for UFS Martin K. Petersen
2025-02-25 0:32 ` Martin K. Petersen
2025-04-25 19:48 ` Luca Weiss
2025-04-27 8:14 ` Ziqi Chen
2025-04-28 8:06 ` Ziqi Chen
2025-04-28 11:26 ` Luca Weiss
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