Thread (12 messages) 12 messages, 2 authors, 2016-07-08
STALE3644d
Revisions (2)
  1. v1 current
  2. v3 [diff vs current]

[PATCH 4/4] spi: s3c64xx: restore removed comments

From: Andi Shyti <hidden>
Date: 2016-07-08 12:19:21
Also in: linux-samsung-soc, linux-spi, lkml
Subsystem: arm/samsung s3c, s5p and exynos arm architectures, samsung spi drivers, spi subsystem, the rest · Maintainers: Krzysztof Kozlowski, Peter Griffin, Andi Shyti, Mark Brown, Linus Torvalds

Patch a9e93e8 has erroneously removed some comments which are
important to understand why the bus frequency is multiplied by
two during the spi transfer.

Signed-off-by: Andi Shyti <redacted>
---
 drivers/spi/spi-s3c64xx.c | 2 ++
 1 file changed, 2 insertions(+)
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 1874bc5..d1fe100 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -639,6 +639,8 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
 	writel(val, regs + S3C64XX_SPI_MODE_CFG);
 
 	if (sdd->port_conf->clk_from_cmu) {
+		/* Configure Clock */
+		/* There is half-multiplier before the SPI */
 		clk_set_rate(sdd->src_clk, sdd->cur_speed * 2);
 	} else {
 		/* Configure Clock */
-- 
2.8.1
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