Re: [PATCH RFC] Toggle fifo write clk after ungating sdcc clk

From: Bjorn Andersson
Date: Thu Feb 20 2020 - 10:52:25 EST


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(+)
>
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