From: Clark Wang <xiaoning.wang@nxp.com>
To: "broonie@kernel.org" <broonie@kernel.org>
Cc: "linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Clark Wang <xiaoning.wang@nxp.com>
Subject: [PATCH 0/8] spi: lpspi: Fix bugs and Add some functions support
Date: Mon, 7 Jan 2019 07:47:32 +0000 [thread overview]
Message-ID: <20190107074639.6336-1-xiaoning.wang@nxp.com> (raw)
Hi Mark,
As subject, these fucntions support, including:
- Support i.MX8 series boards;
- Support cs-gpio fucntion;
- Support DMA mode for both master and salve mode.
From patch 3 to 6 are some bug-fix for PIO mode. In order to avoid data loss
and improve data transmission stability.
These are some notes about cs-gpio and DMA:
- cs-gpio:
Because LPSPI driver don't use default implementation of
transfer_one_message(), I do the cs-gpio control way as same as the way
used in spi core;
- DMA:
Any frame length longer than half txfifosize will be sent by DMA mode.
For now, there are some limits:
1. The maximum transfer speed in master mode depends on the slave device,
at least 40MHz on i.MX8 series (tested by spi-nor on 8qm-lpddr4-arm2
base board);
2. The maximum transfer speed in slave mode is 15MHz(i.MX7ULP),
22MHz(i.MX8 series).
Clark Wang (8):
spi: lpspi: Add i.MX8 boards support for lpspi
spi: lpspi: enable runtime pm for lpspi
spi: lpspi: Improve the stability of lpspi data transmission
spi: lpspi: Fix wrong transmission when don't use CONT
spi: lpspi: Fix CLK pin becomes low before one transfer
spi: lpspi: add the error info of transfer speed setting
spi: lpspi: Add cs-gpio support
spi: lpspi: add dma mode support
drivers/spi/spi-fsl-lpspi.c | 612 ++++++++++++++++++++++++++++++++----
1 file changed, 552 insertions(+), 60 deletions(-)
--
2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Clark Wang <xiaoning.wang@nxp.com>
To: "broonie@kernel.org" <broonie@kernel.org>
Cc: "linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Clark Wang <xiaoning.wang@nxp.com>
Subject: [PATCH 0/8] spi: lpspi: Fix bugs and Add some functions support
Date: Mon, 7 Jan 2019 07:47:32 +0000 [thread overview]
Message-ID: <20190107074639.6336-1-xiaoning.wang@nxp.com> (raw)
Hi Mark,
As subject, these fucntions support, including:
- Support i.MX8 series boards;
- Support cs-gpio fucntion;
- Support DMA mode for both master and salve mode.
>From patch 3 to 6 are some bug-fix for PIO mode. In order to avoid data loss
and improve data transmission stability.
These are some notes about cs-gpio and DMA:
- cs-gpio:
Because LPSPI driver don't use default implementation of
transfer_one_message(), I do the cs-gpio control way as same as the way
used in spi core;
- DMA:
Any frame length longer than half txfifosize will be sent by DMA mode.
For now, there are some limits:
1. The maximum transfer speed in master mode depends on the slave device,
at least 40MHz on i.MX8 series (tested by spi-nor on 8qm-lpddr4-arm2
base board);
2. The maximum transfer speed in slave mode is 15MHz(i.MX7ULP),
22MHz(i.MX8 series).
Clark Wang (8):
spi: lpspi: Add i.MX8 boards support for lpspi
spi: lpspi: enable runtime pm for lpspi
spi: lpspi: Improve the stability of lpspi data transmission
spi: lpspi: Fix wrong transmission when don't use CONT
spi: lpspi: Fix CLK pin becomes low before one transfer
spi: lpspi: add the error info of transfer speed setting
spi: lpspi: Add cs-gpio support
spi: lpspi: add dma mode support
drivers/spi/spi-fsl-lpspi.c | 612 ++++++++++++++++++++++++++++++++----
1 file changed, 552 insertions(+), 60 deletions(-)
--
2.17.1
next reply other threads:[~2019-01-07 7:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-07 7:47 Clark Wang [this message]
2019-01-07 7:47 ` [PATCH 0/8] spi: lpspi: Fix bugs and Add some functions support Clark Wang
2019-01-07 7:47 ` [PATCH 1/8] spi: lpspi: Add i.MX8 boards support for lpspi Clark Wang
2019-01-07 15:15 ` Mark Brown
2019-01-07 7:47 ` [PATCH 2/8] spi: lpspi: enable runtime pm " Clark Wang
2019-01-07 15:16 ` Mark Brown
2019-01-07 7:47 ` [PATCH 3/8] spi: lpspi: Improve the stability of lpspi data transmission Clark Wang
2019-01-07 7:47 ` [PATCH 4/8] spi: lpspi: Fix wrong transmission when don't use CONT Clark Wang
2019-01-07 18:59 ` Applied "spi: lpspi: Fix wrong transmission when don't use CONT" to the spi tree Mark Brown
2019-01-07 18:59 ` Mark Brown
2019-01-07 7:47 ` [PATCH 5/8] spi: lpspi: Fix CLK pin becomes low before one transfer Clark Wang
2019-01-07 7:47 ` [PATCH 6/8] spi: lpspi: add the error info of transfer speed setting Clark Wang
2019-01-09 12:43 ` Mark Brown
2019-01-07 7:47 ` [PATCH 7/8] spi: lpspi: Add cs-gpio support Clark Wang
2019-01-09 12:33 ` Mark Brown
2019-01-07 7:47 ` [PATCH 8/8] spi: lpspi: add dma mode support Clark Wang
2019-01-07 15:22 ` Mark Brown
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