[U-Boot] [PATCH v3 02/10] spi: Add Atmel QuadSPI driver

[Tudor.Ambarus at microchip.com]

On 05/14/2019 01:26 PM, Tudor Ambarus - M18064 wrote:
> From: Tudor Ambarus <tudor.ambarus at microchip.com>
> 
> Backport the driver from linux v5.1-rc5 and adapt it for u-boot.
> Tested on sama5d2_xplained Rev B with mx25l25635e spi-nor flash.
> 
> Signed-off-by: Tudor Ambarus <tudor.ambarus at microchip.com>
> ---
> v3: no change
> v2: no change
> 
>  drivers/spi/Kconfig         |   7 +
>  drivers/spi/Makefile        |   1 +
>  drivers/spi/atmel-quadspi.c | 535 ++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 543 insertions(+)
>  create mode 100644 drivers/spi/atmel-quadspi.c
> 
> diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig
> index dc3e23f353aa..69c2f92c7826 100644
> --- a/drivers/spi/Kconfig
> +++ b/drivers/spi/Kconfig
> @@ -49,6 +49,13 @@ config ATH79_SPI
>  	  uses driver model and requires a device tree binding to operate.
>  	  please refer to doc/device-tree-bindings/spi/spi-ath79.txt.
>  
> +config ATMEL_QSPI
> +	bool "Atmel QSPI driver"

"Atmel Quad SPI Controller"

> +	depends on ARCH_AT91
> +	help
> +	  Enable the Ateml Quad-SPI (QSPI) driver. This driver can only be
> +	  used to access SPI NOR flashes.

The description is wrong, I'll submit a new version if everything else looks ok.
This should have been:

          This enables support for the Quad SPI controller in master mode.
          This driver does not support generic SPI. The implementation only
          supports spi-mem interface.