Re: [PATCH v2 2/2] scsi: ufs: Serve the device init reads from one aggregated read

[Peter Wang <peter.wang@mediatek.com>]

On Wed, 2026-09-30 at 14:18 +0900, Hyeoncheol Jeong wrote:
> Device init reads several attributes and flags one query at a time.
> On
> UFS 5.0, issue one AGGREGATED READ once the device descriptor has
> established wSpecVersion, cache the reply, and serve the following
> attribute, flag and ID-string reads from it. Anything not present,
> and
> older devices or a rejected opcode, fall back to individual queries.
> 
> The following per-item queries are folded into the one aggregated
> read:
> 
> Attributes (ALL_ATTRS group)
> 	0x0c bMaxNumOfRTT                  - ufshcd_set_rtt()
> 	0x17 bRefClkGatingWaitTime         -
> ufshcd_get_ref_clk_gating_wait()
> 	0x1e bWriteBoosterBufferLifeTimeEst - ufshcd_wb_probe()
> 
> Flags (ALL_FLAGS group)
> 	0x03 fPowerOnWPEn                  -
> ufshcd_device_params_init()
> 
> Strings (STRING_DESC groups)
> 	Product Name string                - ufs_get_device_desc()
> 	Serial Number string               -
> ufshcd_create_device_id()
> 
> (bWriteBoosterBufferLifeTimeEst is served from the packet only in the
> shared-buffer mode)
> 
> Signed-off-by: Hyeoncheol Jeong <hyenc.jeong@samsung.com>
> ---

Reviewed-by: Peter Wang <peter.wang@mediatek.com>