Re: [PATCH 4/5] Blackfin SPI Driver: Add GPIO controlled SPI Slave Select support

Andrew Morton
2009-02-05T22:13:48Z

On Thu, 5 Feb 2009 18:07:32 +0800
Bryan Wu <cooloney@kernel.org> wrote:

>
> This patch adds support for GPIO controlled SPI Chip Selects.
> To make use of this feature, set chip_select = 0 and add a proper
> cs_gpio to your controller_data.
>
> struct spi_board_info
> .chip_select = 0
>
> struct bfin5xx_spi_chip
> .cs_gpio = GPIO_P###
>
> There are various SPI devices that require SPI MODE_0,
> and need to have the Chip Selects asserted during the entire transfer.
> Consider using SPI_MODE_3 (SPI_CPHA | SPI_CPOL) if your device allows
> it.

Cannot apply this due to previously-mentioned driver-core-tramplings.