6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
[ Upstream commit 4eecb644b8b82f5279a348f6ebe77e3d6e5b1b05 ]
The root clock is actually 49.152MHz not 40MHz, as it is derived from
the primary audio clock, update the driver to match. This error can
cause the actual clock rate to be higher than the requested clock rate
on the SPI bus.
Fixes: ef75e767167a ("spi: cs42l43: Add SPI controller support")
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxx>
Link: https://msgid.link/r/20240604131704.3227500-1-ckeepax@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/spi/spi-cs42l43.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-cs42l43.c b/drivers/spi/spi-cs42l43.c
index aabef9fc84bdf..0d9c948e119af 100644
--- a/drivers/spi/spi-cs42l43.c
+++ b/drivers/spi/spi-cs42l43.c
@@ -21,7 +21,7 @@
#include <linux/units.h>
#define CS42L43_FIFO_SIZE 16
-#define CS42L43_SPI_ROOT_HZ (40 * HZ_PER_MHZ)
+#define CS42L43_SPI_ROOT_HZ 49152000
#define CS42L43_SPI_MAX_LENGTH 65532
enum cs42l43_spi_cmd {
--
2.43.0
