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    Subject[PATCH 5.19 0324/1157] wifi: wilc1000: use correct sequence of RESET for chip Power-UP/Down
    Date
    From: Ajay Singh <ajay.kathat@microchip.com>

    [ 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@microchip.com>
    Signed-off-by: Kalle Valo <kvalo@kernel.org>
    Link: https://lore.kernel.org/r/20220524120606.9675-1-ajay.kathat@microchip.com
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/wireless/microchip/wilc1000/spi.c | 6 +++---
    1 file changed, 3 insertions(+), 3 deletions(-)

    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);
    }
    --
    2.35.1


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