linux-kernel - Re: [PATCH v3] fpga: zynq-fpga: Ensure proper xCAP interface switch

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Date:   Tue, 6 Jun 2023 19:16:08 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     Nava kishore Manne <nava.kishore.manne@....com>
Cc:     mdf@...nel.org, hao.wu@...el.com, trix@...hat.com,
        michal.simek@....com, linux-fpga@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Alfonso Rodriguez <alfonso.rodriguezm@....es>
Subject: Re: [PATCH v3] fpga: zynq-fpga: Ensure proper xCAP interface switch

On 2023-06-05 at 17:24:33 +0530, Nava kishore Manne wrote:
> From: Alfonso Rodriguez <alfonso.rodriguezm@....es>
> 
> The Zynq platform has PCAP, ICAP and JTAG interfaces for configuring
> programmable logic (PL). The existing driver implementation uses the
> PCAP interface to configure the PL. Before switching the PL configuration
> interface from PCAP to ICAP make sure that all outstanding Transactions
> relevant to the PL configuration should be completed by the PCAP interface
> otherwise it may lead to PL configuration issues.
> 
> This patch provides a required fix to ensure that all existing PL
> transactions are completed before switching from PCAP to ICAP.
> 
> For detailed information relevant to PL configuration interfaces refer
> Zynq 7000 TRM (section 6.5.1).
> Link: https://docs.xilinx.com/v/u/en-US/ug585-Zynq-7000-TRM
> 
> Signed-off-by: Alfonso Rodriguez <alfonso.rodriguezm@....es>
> Signed-off-by: Nava kishore Manne <nava.kishore.manne@....com>

Acked-by: Xu Yilun <yilun.xu@...el.com>

Applied.