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45b8ee7182
Some hardware need some time to switch from a bus to another. This can cause the first transfers following the selection of a bus to fail. There is no way to configure this kind of waiting time in the driver. Add support for the 'settle-time-us' device-tree property. When set, the i2c_mux_gpio_select() applies a delay before returning, leaving enough time to the hardware to switch to the new bus. Signed-off-by: Bastien Curutchet <bastien.curutchet@bootlin.com> Reviewed-by: Andi Shyti <andi.shyti@kernel.org> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Andi Shyti <andi.shyti@kernel.org> |
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