Re: [PATCH v5 1/2] fpga: ecp5-spi: add Lattice ECP5 FPGA manager

[Daniel Glöckner]

Hi,

On Tue, Jul 19, 2022 at 02:23:34PM +0300, Ivan Bornyakov wrote:
> +	struct spi_transfer lsc_xfers[] = {
> +		{
> +			.tx_buf = lsc_init_addr,
> +			.len = sizeof(lsc_init_addr),
> +			.cs_change = 1,
> +		}, {
> +			.tx_buf = lsc_bitstream_burst,
> +			.len = sizeof(lsc_bitstream_burst),
> +			.cs_change = 1,
> +		},
> +	};

cs_change in the last transfer of a message will not prevent transfers
with other spi devices on the bus from taking place. You want to use
spi_bus_lock and friends in addition.

Best regards,

  Daniel