It was <2020-08-19 śro 14:39>, when Krzysztof Kozlowski wrote: > On Wed, Aug 19, 2020 at 02:32:02PM +0200, Łukasz Stelmach wrote: >> Signed-off-by: Łukasz Stelmach <l.stelm...@samsung.com> > > Add a quirk - why?
Because stuff does not work without it and works with it and it is
turned on for other SoCs which have simmilar SPI HW.
> There is here no commit msg, no explanation.
As I wrote in the cover letter, this and previous commits make things
work on Exynos3250 (ARTIK5 precisely). I can't explain why. I read
everything I could about this HW and there were no details about
automatic CS handling other than how to turn it on and off.
>> ---
>> drivers/spi/spi-s3c64xx.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
>> index fb5e2ba4b6b9..8fe44451d303 100644
>> --- a/drivers/spi/spi-s3c64xx.c
>> +++ b/drivers/spi/spi-s3c64xx.c
>> @@ -1372,6 +1372,7 @@ static struct s3c64xx_spi_port_config
>> exynos4_spi_port_config = {
>> .tx_st_done = 25,
>> .high_speed = true,
>> .clk_from_cmu = true,
>> + .quirks = S3C64XX_SPI_QUIRK_CS_AUTO,
>> };
>>
>> static struct s3c64xx_spi_port_config exynos7_spi_port_config = {
>> --
>> 2.26.2
>>
>
--
Łukasz Stelmach
Samsung R&D Institute Poland
Samsung Electronics
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