From: Sai Pavan Boddu <sai.pavan.boddu@xilinx.com>
To: alistair@alistair23.me, crosthwaite.peter@gmail.com,
peter.maydell@linaro.org, edgar.iglesias@gmail.com,
frasse.iglesias@gmail.com
Cc: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH v1 0/1] xilinx_spips dummy bytes fix
Date: Tue, 17 Apr 2018 19:48:15 +0530 [thread overview]
Message-ID: <1523974696-1965-1-git-send-email-saipava@xilinx.com> (raw)
For zynq-7000 boards, we saw issues when u-boot/linux accessing the qspi.
Issue is due to wrong dummy byte transfers for few of un-handled commands ex: 0x9F, 0x6, 0xe9, 0x4, 0x18, etc
There are many unhandled commands which do not require dummy bytes but they can be followed by address cycles.
To fix this issue for above commands, the next upcoming tx bytes are not considered dummies rather sent to slave directly.
Sai Pavan Boddu (1):
xilinx_spips: send dummy only if cmd requires it
hw/ssi/xilinx_spips.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
--
2.7.4
next reply other threads:[~2018-04-17 14:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-17 14:18 Sai Pavan Boddu [this message]
2018-04-17 14:18 ` [Qemu-devel] [PATCH v1 1/1] xilinx_spips: send dummy only if cmd requires it Sai Pavan Boddu
2018-04-17 22:43 ` francisco iglesias
2018-04-18 7:17 ` Sai Pavan Boddu
2018-04-17 15:47 ` [Qemu-devel] [PATCH v1 0/1] xilinx_spips dummy bytes fix Alistair Francis
2018-04-17 16:08 ` Alistair Francis
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