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spi: dw: fix wrong RX_SAMPLE_DLY setting after resume

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On platforms which need a non-zero rx sample delay, the RX_SAMPLE_DLY
reg setting is lost after resume. The reason is that the reg may be
reset to 0 after resuming, but dws->cur_rx_sample_dly doesn't know
this fact. Fix this issue by clearing dws->cur_rx_sample_dly in
dw_spi_shutdown_chip().

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Suggested-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20260803135925.12622-1-jszhang@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jisheng Zhang 2026-08-03 21:59:25 +08:00 committed by Mark Brown
parent e3775cbffa
commit 133c71b2c0
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1 changed files with 1 additions and 0 deletions
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drivers/spi/spi-dw.h
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@ -283,6 +283,7 @@ static inline void dw_spi_shutdown_chip(struct dw_spi *dws)
dw_spi_enable_chip(dws, 0);
dw_spi_set_clk(dws, 0);
dws->current_freq = 0;
dws->cur_rx_sample_dly = 0;
}
extern void dw_spi_set_cs(struct spi_device *spi, bool enable);