linux-kernel - Re: [PATCH] mailbox: qcom-ipcc: Reset CLEAR_ON_RECV

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Message-ID: <Z3JQ4HFSoIYmc4+r@hu-mojha-hyd.qualcomm.com>
Date: Mon, 30 Dec 2024 13:20:56 +0530
From: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
To: jassisinghbrar@...il.com, manivannan.sadhasivam@...aro.org
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mukesh Ojha <mojha@....qualcomm.com>
Subject: Re: [PATCH] mailbox: qcom-ipcc: Reset CLEAR_ON_RECV_RD if set from
 boot firmware

On Mon, Dec 30, 2024 at 12:36:44PM +0530, Mukesh Ojha wrote:
> From: Mukesh Ojha <mukesh.ojha@....qualcomm.com>
> 
> For some SoCs, boot firmware is using the same IPCC instance used
> by Linux and it has kept CLEAR_ON_RECV_RD set which basically means
> interrupt pending registers are cleared when RECV_ID is read and the
> register automatically updates to the next pending interrupt/client
> status based on priority.
> 
> Clear the CLEAR_ON_RECV_RD if it is set from the boot firmware.
> 
> Signed-off-by: Mukesh Ojha <mojha@....qualcomm.com>

Very sorry for the spam, please ignore this patch, will send another one
with corrected email Id.

-Mukesh
>