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From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Sayali Lokhande <sayalil@codeaurora.org>
Cc: adrian.hunter@intel.com, robh+dt@kernel.org,
	ulf.hansson@linaro.org, asutoshd@codeaurora.org,
	stummala@codeaurora.org, ppvk@codeaurora.org,
	rampraka@codeaurora.org, vbadigan@codeaurora.org,
	sboyd@kernel.org, georgi.djakov@linaro.org, mka@chromium.org,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
	agross@kernel.org, linux-mmc-owner@vger.kernel.org
Subject: Re: [PATCH RFC] Toggle fifo write clk after ungating sdcc clk
Date: Thu, 20 Feb 2020 07:51:26 -0800	[thread overview]
Message-ID: <20200220155126.GC955802@ripper> (raw)
In-Reply-To: <1582190446-4778-1-git-send-email-sayalil@codeaurora.org>

On Thu 20 Feb 01:20 PST 2020, Sayali Lokhande wrote:

> During GCC level clock gating of MCLK, the async FIFO
> gets into some hang condition, such that for the next
> transfer after MCLK ungating, first bit of CMD response
> doesn't get written in to the FIFO. This cause the CPSM
> to hang eventually leading to SW timeout.
> 
> To fix the issue, toggle the FIFO write clock after
> MCLK ungated to get the FIFO pointers and flags to
> valid states.
> 

Please don't provide cover letters for a single patch.

Regards,
Bjorn

> Ram Prakash Gupta (1):
>   mmc: sdhci-msm: Toggle fifo write clk after ungating sdcc clk
> 
>  drivers/mmc/host/sdhci-msm.c | 43 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
> 
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project

      parent reply	other threads:[~2020-02-20 15:52 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-20  9:20 Sayali Lokhande
2020-02-20  9:20 ` [PATCH RFC] mmc: sdhci-msm: " Sayali Lokhande
2020-02-20 15:44   ` Bjorn Andersson
2020-02-20 18:02   ` Stephen Boyd
2020-02-24 13:49   ` Veerabhadrarao Badiganti
2020-02-28  6:54     ` Sayali Lokhande
2020-02-20 15:51 ` Bjorn Andersson [this message]

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