[U-Boot] [PATCH v4] spi: Add SPI driver for MT76xx SoCs

[Daniel Schwierzeck]

On 15.08.2018 17:19, Stefan Roese wrote:
> This patch adds the SPI driver for the MediaTek MT7688 SoC (and
> derivates). Its been tested on the LinkIt Smart 7688 and the Gardena
> Smart Gateway with and SPI NOR on CS0 and on the Gardena Smart
> Gateway additionally with an SPI NAND on CS1.
> 
> Note that the SPI controller only supports a max transfer size of 32
> bytes. This driver implementes a workaround to enable bigger xfer
> sizes to speed up the transfer especially for the SPI NAND support.
> 
> Signed-off-by: Stefan Roese <sr at denx.de>
> Cc: Jagan Teki <jagan at openedev.com>
> Cc: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>
> Reviewed-by: Jagan Teki <jagan at openedev.com>
> ---
> v4:
> - Rename functions and macros from mt7621 to mt76xx to better
>   reflect the SoC usage and match the driver name
> 
> v3:
> - Drop IO wrappers completely as suggested by Daniel
> - Read "clock-frequency" DT property instead of using 
>   CONFIG_SYS_MIPS_TIMER_FREQ
> 
> v2:
> - Add some macros instead of hardcoded numbers
> - Move compatible DT struct down in the file 
> 
>  drivers/spi/Kconfig      |   8 +
>  drivers/spi/Makefile     |   1 +
>  drivers/spi/mt76xx_spi.c | 312 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 321 insertions(+)
>  create mode 100644 drivers/spi/mt76xx_spi.c
> 

Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck at gmail.com>

-- 
- Daniel

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