Chuanhua Han writes:
>> I am using XSPI mode on LS1021A, talking to a lot of different SPI devices.
>> And they all work, and I believe everything is quite "normal".
>>
> Since I don't have the board of LS1021, I can't test it. I use other boards
> with DSPI (such as LS1043, LS2088, etc.),
>
Chuanhua Han writes:
>> I am using XSPI mode on LS1021A, talking to a lot of different SPI devices.
>> And they all work, and I believe everything is quite "normal".
>>
> Since I don't have the board of LS1021, I can't test it. I use other boards
> with DSPI (such as LS1043, LS2088, etc.),
>
H 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
>
> Chuanhua Han writes:
>
> >> -Original Message-
> >> From: Boris Brezillon
> >> Sent: 2018年10月9日 18:05
> >> To: Chuanhua Han
> >> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> >>
H 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
>
> Chuanhua Han writes:
>
> >> -Original Message-
> >> From: Boris Brezillon
> >> Sent: 2018年10月9日 18:05
> >> To: Chuanhua Han
> >> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> >>
Mark Brown writes:
> On Tue, Oct 09, 2018 at 12:05:22PM +0200, Boris Brezillon wrote:
>> On Tue, 9 Oct 2018 09:52:23 +
>> Chuanhua Han wrote:
>
>> > 1. In the dspi driver (spi controller), bits_per_word
>> > (dspi->bits_per_word = transfer->bits_per_word) passed from the upper
>> > layer
Mark Brown writes:
> On Tue, Oct 09, 2018 at 12:05:22PM +0200, Boris Brezillon wrote:
>> On Tue, 9 Oct 2018 09:52:23 +
>> Chuanhua Han wrote:
>
>> > 1. In the dspi driver (spi controller), bits_per_word
>> > (dspi->bits_per_word = transfer->bits_per_word) passed from the upper
>> > layer
Chuanhua Han writes:
>> -Original Message-
>> From: Boris Brezillon
>> Sent: 2018年10月9日 18:05
>> To: Chuanhua Han
>> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
>> linux-kernel@vger.kernel.org; e...@deif.com
>> Subject: Re: [PATCH 1
Chuanhua Han writes:
>> -Original Message-
>> From: Boris Brezillon
>> Sent: 2018年10月9日 18:05
>> To: Chuanhua Han
>> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
>> linux-kernel@vger.kernel.org; e...@deif.com
>> Subject: Re: [PATCH 1
Chuanhua Han writes:
> 1. In the dspi driver (spi controller), bits_per_word (dspi->bits_per_word =
> transfer->bits_per_word) passed from the upper layer (spi-mem.c) is used.
> In this way, I can only assign the appropriate value of
> transfer->bits_per_word before passing to the controller,
Chuanhua Han writes:
> 1. In the dspi driver (spi controller), bits_per_word (dspi->bits_per_word =
> transfer->bits_per_word) passed from the upper layer (spi-mem.c) is used.
> In this way, I can only assign the appropriate value of
> transfer->bits_per_word before passing to the controller,
On Tue, Oct 09, 2018 at 12:05:22PM +0200, Boris Brezillon wrote:
> On Tue, 9 Oct 2018 09:52:23 +
> Chuanhua Han wrote:
> > 1. In the dspi driver (spi controller), bits_per_word
> > (dspi->bits_per_word = transfer->bits_per_word) passed from the upper
> > layer (spi-mem.c) is used. In this
On Tue, Oct 09, 2018 at 12:05:22PM +0200, Boris Brezillon wrote:
> On Tue, 9 Oct 2018 09:52:23 +
> Chuanhua Han wrote:
> > 1. In the dspi driver (spi controller), bits_per_word
> > (dspi->bits_per_word = transfer->bits_per_word) passed from the upper
> > layer (spi-mem.c) is used. In this
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年10月9日 18:05
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
&g
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年10月9日 18:05
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
&g
On Tue, 9 Oct 2018 09:52:23 +
Chuanhua Han wrote:
> 1. In the dspi driver (spi controller), bits_per_word
> (dspi->bits_per_word = transfer->bits_per_word) passed from the upper
> layer (spi-mem.c) is used. In this way, I can only assign the
> appropriate value of transfer->bits_per_word
On Tue, 9 Oct 2018 09:52:23 +
Chuanhua Han wrote:
> 1. In the dspi driver (spi controller), bits_per_word
> (dspi->bits_per_word = transfer->bits_per_word) passed from the upper
> layer (spi-mem.c) is used. In this way, I can only assign the
> appropriate value of transfer->bits_per_word
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年9月28日 15:19
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw functio
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年9月28日 15:19
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw functio
On Fri, Sep 28, 2018 at 09:18:33AM +0200, Boris Brezillon wrote:
> I might be wrong, but that's not my understanding of ->bits_per_word.
> To me, it's something that you can use when your *device* (not
> controller) expects non-byte aligned words [1]. The spi-mem protocol is
Yes, bits per word
On Fri, Sep 28, 2018 at 09:18:33AM +0200, Boris Brezillon wrote:
> I might be wrong, but that's not my understanding of ->bits_per_word.
> To me, it's something that you can use when your *device* (not
> controller) expects non-byte aligned words [1]. The spi-mem protocol is
Yes, bits per word
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年9月28日 15:19
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw functio
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年9月28日 15:19
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw functio
On Fri, 28 Sep 2018 06:59:58 +
Chuanhua Han wrote:
> >
> > It's still unclear why you need to specify a bits_per_word value,
> > but if this is needed, it's probably something you want to add to
> > spi.c, when a message is queued.
> To specify a specific bits_per_word to be able to use
On Fri, 28 Sep 2018 06:59:58 +
Chuanhua Han wrote:
> >
> > It's still unclear why you need to specify a bits_per_word value,
> > but if this is needed, it's probably something you want to add to
> > spi.c, when a message is queued.
> To specify a specific bits_per_word to be able to use
HI,Boris,
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年9月28日 14:45
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer
HI,Boris,
> -Original Message-
> From: Boris Brezillon
> Sent: 2018年9月28日 14:45
> To: Chuanhua Han
> Cc: broo...@kernel.org; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; e...@deif.com
> Subject: Re: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer
Hi Chuanhua,
On Fri, 21 Sep 2018 15:06:26 +0800
Chuanhua Han wrote:
> Before we add this spi_transfer to the spi_message chain table, we need
> bits_per_word_mask based on spi_control to set the bits_per_word of
> this spi_transfer.
It's not clear to me what you're trying to fix/improve. Can
Hi Chuanhua,
On Fri, 21 Sep 2018 15:06:26 +0800
Chuanhua Han wrote:
> Before we add this spi_transfer to the spi_message chain table, we need
> bits_per_word_mask based on spi_control to set the bits_per_word of
> this spi_transfer.
It's not clear to me what you're trying to fix/improve. Can
> -Original Message-
> From: Chuanhua Han
> Sent: 2018年9月21日 15:06
> To: broo...@kernel.org
> Cc: linux-...@vger.kernel.org; linux-kernel@vger.kernel.org; e...@deif.com;
> boris.brezil...@bootlin.com; Chuanhua Han
> Subject: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
>
> -Original Message-
> From: Chuanhua Han
> Sent: 2018年9月21日 15:06
> To: broo...@kernel.org
> Cc: linux-...@vger.kernel.org; linux-kernel@vger.kernel.org; e...@deif.com;
> boris.brezil...@bootlin.com; Chuanhua Han
> Subject: [PATCH 1/2] spi: spi-mem: Add the spi_set_xfer_bpw function
>
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