Some platforms need the MUX state to be auto initialized at boot time even if there are no explicit users for the MUX. In these cases, the MUX device tree has "idle-states" property which specifies what state the MUX should be initialized to.

So far we were relying on custom u-boot property "u-boot,mux-autoprobe" to autoprobe such MUXes. This patch causes the MUX to autoprobe if it has "idle-states" property in device tree.

This should allow us to stop using the custom "u-boot,mux-autoprobe" property.

Signed-off-by: Roger Quadros rogerq@kernel.org --- drivers/mux/mux-uclass.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/mux/mux-uclass.c b/drivers/mux/mux-uclass.c index c98576ceb8..8833888ded 100644 --- a/drivers/mux/mux-uclass.c +++ b/drivers/mux/mux-uclass.c @@ -318,7 +318,8 @@ int dm_mux_init(void) return ret; } uclass_foreach_dev(dev, uc) { - if (dev_read_bool(dev, "u-boot,mux-autoprobe")) { + if (dev_read_bool(dev, "u-boot,mux-autoprobe") || + dev_read_bool(dev, "idle-states")) { ret = device_probe(dev); if (ret) log_debug("unable to probe device %s\n",

As it is present for USB and USB won't work without the MUX initialized correctly, add "bootph-all" property to MUX nodes.

Signed-off-by: Roger Quadros rogerq@kernel.org --- arch/arm/dts/k3-am642-sk-u-boot.dtsi | 4 ++++ arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi | 8 ++++++++ arch/arm/dts/k3-j721e-sk-u-boot.dtsi | 8 ++++++++ 3 files changed, 20 insertions(+)

diff --git a/arch/arm/dts/k3-am642-sk-u-boot.dtsi b/arch/arm/dts/k3-am642-sk-u-boot.dtsi index f3ed376ab7..ea200a1ee1 100644 --- a/arch/arm/dts/k3-am642-sk-u-boot.dtsi +++ b/arch/arm/dts/k3-am642-sk-u-boot.dtsi @@ -184,6 +184,10 @@ bootph-all; };

+&serdes_ln_ctrl { + bootph-all; +}; + &usbss0 { bootph-all; }; diff --git a/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi b/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi index b77f8d92de..9433f3bafa 100644 --- a/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi +++ b/arch/arm/dts/k3-j721e-common-proc-board-u-boot.dtsi @@ -93,6 +93,14 @@ bootph-all; };

+&serdes_ln_ctrl { + bootph-all; +}; + +&usb_serdes_mux { + bootph-all; +}; + &main_usbss0_pins_default { bootph-all; }; diff --git a/arch/arm/dts/k3-j721e-sk-u-boot.dtsi b/arch/arm/dts/k3-j721e-sk-u-boot.dtsi index 370fe5190b..fff447094a 100644 --- a/arch/arm/dts/k3-j721e-sk-u-boot.dtsi +++ b/arch/arm/dts/k3-j721e-sk-u-boot.dtsi @@ -89,6 +89,14 @@ bootph-all; };

+&serdes_ln_ctrl { + bootph-all; +}; + +&usb_serdes_mux { + bootph-all; +}; + &main_usbss0_pins_default { bootph-all; };