linux-kernel - [PATCH v2 RESEND 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS

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Date:   Thu,  1 Oct 2020 17:21:41 +0200
From:   Łukasz Stelmach <l.stelmach@...sung.com>
To:     Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Andi Shyti <andi@...zian.org>, Mark Brown <broonie@...nel.org>,
        linux-spi@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     m.szyprowski@...sung.com, b.zolnierkie@...sung.com,
        Łukasz Stelmach <l.stelmach@...sung.com>
Subject: [PATCH v2 RESEND 2/9] spi: spi-s3s64xx: Add
 S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250

Fix issues with DMA transfers bigger than 512 bytes on Exynos3250. Without
the patches such transfers fail.

The vendor kernel for ARTIK5 handles CS in a simmilar way.

Signed-off-by: Łukasz Stelmach <l.stelmach@...sung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 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 26c7cb79cd78..22bf8c75580a 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -1379,6 +1379,7 @@ 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