This is a note to let you know that I've just added the patch titled
spi: spi-geni-qcom: Correct CS_TOGGLE bit in SPI_TRANS_CFG
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-spi-geni-qcom-correct-cs_toggle-bit-in-spi_trans.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 362dba2b4e6b6226421181eec771ed0eedbcb258
Author: Vijaya Krishna Nivarthi <quic_vnivarth@xxxxxxxxxxx>
Date: Tue Apr 25 14:12:08 2023 +0530
spi: spi-geni-qcom: Correct CS_TOGGLE bit in SPI_TRANS_CFG
[ Upstream commit 5fd7c99ecf45c8ee8a9b1268f0ffc91cc6271da2 ]
The CS_TOGGLE bit when set is supposed to instruct FW to
toggle CS line between words. The driver with intent of
disabling this behaviour has been unsetting BIT(0). This has
not caused any trouble so far because the original BIT(1)
is untouched and BIT(0) likely wasn't being used.
Correct this to prevent a potential future bug.
Signed-off-by: Vijaya Krishna Nivarthi <quic_vnivarth@xxxxxxxxxxx
Acked-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx
Fixes: 561de45f72bd ("spi: spi-geni-qcom: Add SPI driver support for GENI based QUP")
Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx
Link: https://lore.kernel.org/r/1682412128-1913-1-git-send-email-quic_vnivarth@xxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 2f51421e2a718..4b92f119955c7 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -32,7 +32,7 @@
#define CS_DEMUX_OUTPUT_SEL GENMASK(3, 0)
#define SE_SPI_TRANS_CFG 0x25c
-#define CS_TOGGLE BIT(0)
+#define CS_TOGGLE BIT(1)
#define SE_SPI_WORD_LEN 0x268
#define WORD_LEN_MSK GENMASK(9, 0)
