Konstantin Makariev
dc8383a32c
Fix for relative positions location. Peek position is farther from Extended than Compact. Init state can be defined in device tree to properly initialize GPIOs. Sensors data check became optionally configurable via device tree property. Change-Id: I7e31801d86e782e1ac7f5bdd3df0ef6cde7b6b0a Signed-off-by: Konstantin Makariev <hcv867@motorola.com> Reviewed-on: https://gerrit.mot.com/2271623 SME-Granted: SME Approvals Granted SLTApproved: Slta Waiver Tested-by: Jira Key Reviewed-by: Sridhar Vashist <svashist@motorola.com> Reviewed-by: Qing Chang <qing@motorola.com> Submit-Approved: Jira Key
63 lines
2.2 KiB
Plaintext
63 lines
2.2 KiB
Plaintext
DRV8424 stepper motor driver from Texas Instruments
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Motor driver is a platform device. Motorola specific HW layout
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allows for the following controllable GPIOs:
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- MOTOR_POWER_EN
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- MOTOR_FAULT_INT
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- MOTOR_STEP
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- MOTOR_DIR
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- MOTOR_EN
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- MOTOR_SLEEP
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- MOTOR_ACTIVE
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There is no kernel configuration option associated with DRV8424 DLKM
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Required properties:
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- compatible: only one supported "moto,drv8424"
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- drv8424-gpio-cells: number of elements allocated for gpio array in the driver
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- MOTOR_POWER_EN-gpio: gpio enabling power to the motor
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- MOTOR_FAULT_INT-gpio: gpio used as IRQ to indicate motor fault
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- MOTOR_STEP-gpio: gpio used as input for pulse generator
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- MOTOR_DIR-gpio: gpio to control motor direction
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- MOTOR_EN-gpio: gpio to control drv8424 EN state
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- MOTOR_SLEEP-gpio: gpio to control drv8424 SLEEP state
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- MOTOR_ACTIVE-gpio: gpio to control hall effect sensor measurements
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- pinctrl-names: pinctrl state "drv8424_int_default" required for motor fault IRQ
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Optional properties:
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- pinctrl-names: list of pre-defined name (currently only "init_state" supported)
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- power-default-off: keep power off when not in use
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- support-mode: driver supports MODE0 and MODE1 setup
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- support-torque: driver supports T0 and T1 setup
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- no-sensors: ignore sensors data (mostly debug option)
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Note:
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Only following pinctrl state names are valid!!!
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"m0_low", "m0_high", "m0_disable",
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"m1_low", "m1_high", "m1_disable",
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"t0_low", "t0_high", "t0_disable",
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"t1_low", "t1_high", "t1_disable",
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"drv8424_int_default",
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"drv8424_clk_active",
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"drv8424_clk_sleep",
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"init_state"
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Example:
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moto_drv8424_support {
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compatible = "moto,drv8424";
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drv8424-gpios-cells = <11>;
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pinctrl-names = "drv8424_int_default", "init_state";
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pinctrl-0 = <&drv8424_int_default>;
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pinctrl-1 = <&drv8424_pwr_en_init &drv8424_step_init &drv8424_dir_init
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&drv8424_sleep_init &drv8424_en_init &drv8424_step_init &drv8424_active_init>;
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MOTOR_POWER_EN-gpio = <&tlmm 102>;
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MOTOR_FAULT_INT-gpio = <&tlmm 112>;
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MOTOR_STEP-gpio = <&tlmm 182>;
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MOTOR_DIR-gpio = <&tlmm 183>;
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MOTOR_SLEEP-gpio = <&tlmm 184>;
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MOTOR_ACTIVE-gpio = <&tlmm 185>;
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vdd-supply = <&S10B>;
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power-default-off;
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}; |