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From: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
To: Manivannan Sadhasivam <mani@kernel.org>
Cc: Nitin Rawat <quic_nitirawa@quicinc.com>,
	vkoul@kernel.org, kishon@kernel.org, andersson@kernel.org,
	konradybcio@kernel.org, linux-arm-msm@vger.kernel.org,
	linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V3 2/2] phy: qcom-qmp-ufs: Add regulator loads for SM8650 and SM8750
Date: Fri, 22 Aug 2025 12:15:54 +0300	[thread overview]
Message-ID: <761c97bb-ee90-4ace-acd3-08349831aade@oss.qualcomm.com> (raw)
In-Reply-To: <xir3u3hlmcvfu6uasijz6g2oialoasmuu4bno6ctxpscqcebz6@6kw6xpm5bxbd>

On 22/08/2025 11:53, Manivannan Sadhasivam wrote:
> On Wed, Aug 20, 2025 at 03:49:31AM GMT, Dmitry Baryshkov wrote:
>> On Wed, Aug 20, 2025 at 03:58:26AM +0530, Nitin Rawat wrote:
>>> Add regulator load voting support for SM8650 and SM8750 platforms by
>>> introducing dedicated regulator bulk data arrays with their load
>>> values.
>>>
>>> The load requirements are:
>>> - SM8650: vdda-phy (205mA), vdda-pll (17.5mA)
>>> - SM8750: vdda-phy (213mA), vdda-pll (18.3mA)
>>>
>>> This ensures stable operation and proper power management for these
>>> platforms where regulators are shared between the QMP USB PHY and
>>> other IP blocks by setting appropriate regulator load currents during PHY
>>> operations.
>>>
>>> Configurations without specific load requirements will continue to work
>>> unchanged, as init_load_uA remains zero-initialized when .init_load_uA
>>> is not provided.
>>
>> Can we please get configuration for the rest of the platforms?
>>
> 
> Only if the rest of the platforms require setting the load... It is not very
> clear if the older platforms share the regulators with other IPs or not.

Yes, they are usually shared. USB. PCIe and DSI frequently sit on the 
same voltage rails.


-- 
With best wishes
Dmitry

  reply	other threads:[~2025-08-22  9:15 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-19 22:28 [PATCH V3 0/2] Add regulator load support for QMP UFS PHY Nitin Rawat
2025-08-19 22:28 ` [PATCH V3 1/2] phy: qcom-qmp-ufs: Add regulator load voting for UFS QMP PHY Nitin Rawat
2025-08-20  0:48   ` Dmitry Baryshkov
2025-08-22  8:40   ` Manivannan Sadhasivam
2025-08-19 22:28 ` [PATCH V3 2/2] phy: qcom-qmp-ufs: Add regulator loads for SM8650 and SM8750 Nitin Rawat
2025-08-20  0:49   ` Dmitry Baryshkov
2025-08-20  6:37     ` Nitin Rawat
2025-08-20 11:54       ` Dmitry Baryshkov
2025-08-21 16:02         ` Nitin Rawat
2025-08-21 19:39           ` Nitin Rawat
2025-08-22  9:19           ` Dmitry Baryshkov
2025-08-22  9:24             ` Nitin Rawat
2025-08-22  8:53     ` Manivannan Sadhasivam
2025-08-22  9:15       ` Dmitry Baryshkov [this message]
2025-08-22  9:23         ` Nitin Rawat
2025-08-22 10:56           ` Manivannan Sadhasivam
2025-08-22 11:39             ` Nitin Rawat
2025-08-22  8:51   ` Manivannan Sadhasivam

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