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authorŁukasz Stelmach <l.stelmach@samsung.com>2020-10-02 14:22:41 +0200
committerMark Brown <broonie@kernel.org>2020-10-02 21:54:22 +0100
commit20b4016a3bea0ce0a94bf4f20f2a9670ea1dfaa3 (patch)
treebbb6ae320f7945bb200ff55f90efd6642e8c6382 /drivers/spi/spi-s3c64xx.c
parent58d54781433f4e02f598e794e1fdb29c3ac07fa1 (diff)
downloadlinux-20b4016a3bea0ce0a94bf4f20f2a9670ea1dfaa3.tar.bz2
spi: spi-s3c64xx: Ensure cur_speed holds actual clock value
Make sure the cur_speed value used in s3c64xx_enable_datapath() to configure DMA channel and in s3c64xx_wait_for_*() to calculate the transfer timeout is set to the actual value of (half) the clock speed. Don't change non-CMU case, because no frequency calculation errors have been reported. Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Suggested-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> Link: https://lore.kernel.org/r/20201002122243.26849-8-l.stelmach@samsung.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-s3c64xx.c')
-rw-r--r--drivers/spi/spi-s3c64xx.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index f85f40fd608c..0bd3e230350c 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -626,6 +626,7 @@ static int s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
ret = clk_set_rate(sdd->src_clk, sdd->cur_speed * 2);
if (ret)
return ret;
+ sdd->cur_speed = clk_get_rate(sdd->src_clk) / 2;
} else {
/* Configure Clock */
val = readl(regs + S3C64XX_SPI_CLK_CFG);