This is a note to let you know that I've just added the patch titled
wifi: wilc1000: use correct sequence of RESET for chip Power-UP/Down
to the 5.19-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:
wifi-wilc1000-use-correct-sequence-of-reset-for-chip.patch
and it can be found in the queue-5.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 283ab338cdd67b1df552f300a8afe996f8ea4298
Author: Ajay Singh <ajay.kathat@xxxxxxxxxxxxx>
Date: Tue May 24 12:06:19 2022 +0000
wifi: wilc1000: use correct sequence of RESET for chip Power-UP/Down
[ Upstream commit fcf690b0b47494df51d214db5c5a714a400b0257 ]
For power-up sequence, WILC expects RESET set to high 5ms after making
chip_en(enable) so corrected chip power-up sequence by making RESET high.
For Power-Down sequence, the correct sequence make RESET and CHIP_EN low
without any extra delay.
Fixes: ec031ac4792c ("wilc1000: Add reset/enable GPIO support to SPI driver")
Signed-off-by: Ajay Singh <ajay.kathat@xxxxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220524120606.9675-1-ajay.kathat@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 18420e954402..2ae8dd3411ac 100644
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c
@@ -191,11 +191,11 @@ static void wilc_wlan_power(struct wilc *wilc, bool on)
/* assert ENABLE: */
gpiod_set_value(gpios->enable, 1);
mdelay(5);
- /* deassert RESET: */
- gpiod_set_value(gpios->reset, 0);
- } else {
/* assert RESET: */
gpiod_set_value(gpios->reset, 1);
+ } else {
+ /* deassert RESET: */
+ gpiod_set_value(gpios->reset, 0);
/* deassert ENABLE: */
gpiod_set_value(gpios->enable, 0);
}
