From: Patrick DELAUNAY <patrick.delaunay@foss.st.com>
To: Daniil Stas <daniil.stas@posteo.net>, <u-boot@lists.denx.de>
Cc: Patrice Chotard <patrice.chotard@foss.st.com>
Subject: Re: [PATCH] spi: stm32_qspi: Fix short data write operation
Date: Tue, 1 Jun 2021 17:31:56 +0200 [thread overview]
Message-ID: <ab69c988-7c97-fbf4-bcfb-99c5b4025c39@foss.st.com> (raw)
In-Reply-To: <20210523222449.1495352-2-daniil.stas@posteo.net>
Hi,
On 5/24/21 12:24 AM, Daniil Stas wrote:
> TCF flag only means that all data was sent to FIFO. To check if the
> data was sent out of FIFO we should also wait for the BUSY flag to be
> cleared. Otherwise there is a race condition which can lead to
> inability to write short (one byte long) data.
>
> Signed-off-by: Daniil Stas <daniil.stas@posteo.net>
> Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
> Cc: Patrice Chotard <patrice.chotard@foss.st.com>
> ---
> drivers/spi/stm32_qspi.c | 29 +++++++++++++++--------------
> 1 file changed, 15 insertions(+), 14 deletions(-)
>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Thanks
Patrick
next prev parent reply other threads:[~2021-06-01 15:32 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-23 22:24 [PATCH] net: dwc_eth_qos: Fix needless phy auto-negotiation restarts Daniil Stas
2021-05-23 22:24 ` [PATCH] spi: stm32_qspi: Fix short data write operation Daniil Stas
2021-05-24 7:40 ` Patrice CHOTARD
2021-05-24 12:53 ` Daniil Stas
2021-05-25 16:02 ` Patrice CHOTARD
2021-06-18 8:01 ` Patrice CHOTARD
2021-06-01 15:31 ` Patrick DELAUNAY [this message]
2021-05-24 8:30 ` [PATCH] net: dwc_eth_qos: Fix needless phy auto-negotiation restarts Patrice CHOTARD
2021-05-25 6:53 ` Ramon Fried
2021-06-01 15:26 ` Patrick DELAUNAY
2021-06-12 18:36 ` Ramon Fried
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