spi-sun4i: how/where to set the bus number of spi_master ?

spi-sun4i: how/where to set the bus number of spi_master ?

[Frank Schäfer]

Hi,

trying to get a TFT display working on a Banana Pi M1 board, I noticed 
that the spi-sun4i driver doesn't set the bus number of the spi_master 
(which leaves it at its default value -1).
fbtft_device driver fails to load for that reason.
What's the right fix for this ? Is this something that needs to be added 
to the boards device tree file ?

Regards,
Frank
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Re: spi-sun4i: how/where to set the bus number of spi_master ?

[Maxime Ripard]

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On Tue, Mar 07, 2017 at 07:21:14PM +0100, Frank Schäfer wrote:
> trying to get a TFT display working on a Banana Pi M1 board, I noticed that
> the spi-sun4i driver doesn't set the bus number of the spi_master (which
> leaves it at its default value -1).
> fbtft_device driver fails to load for that reason.
> What's the right fix for this ? Is this something that needs to be added to
> the boards device tree file ?

Yes, you need to set an alias.
https://linux-sunxi.org/SPIdev#Configuring_your_device-tree_.28mainline.29

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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