fpga: dfl: fix bug in port reset handshake
[ Upstream commit5.4-rM2-2.2.x-imx-squashed8614afd689
] When putting the port in reset, driver must wait for the soft reset acknowledgment bit instead of the soft reset bit. Fixes:47c1b19c16
(fpga: dfl: afu: add port ops support) Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Acked-by: Wu Hao <hao.wu@intel.com> Reviewed-by: Tom Rix <trix@redhat.com> Signed-off-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
parent
c731882958
commit
570b1c92cb
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@ -83,7 +83,8 @@ int __afu_port_disable(struct platform_device *pdev)
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* on this port and minimum soft reset pulse width has elapsed.
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* Driver polls port_soft_reset_ack to determine if reset done by HW.
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*/
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if (readq_poll_timeout(base + PORT_HDR_CTRL, v, v & PORT_CTRL_SFTRST,
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if (readq_poll_timeout(base + PORT_HDR_CTRL, v,
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v & PORT_CTRL_SFTRST_ACK,
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RST_POLL_INVL, RST_POLL_TIMEOUT)) {
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dev_err(&pdev->dev, "timeout, fail to reset device\n");
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return -ETIMEDOUT;
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