bindings/mmc/mmc-pwrseq-emmc.yaml

1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/mmc/mmc-pwrseq-emmc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Simple eMMC hardware reset provider
10   - Ulf Hansson <ulf.hansson@linaro.org>
13   The purpose of this driver is to perform standard eMMC hw reset
16   fix possible issues if bootloader has left eMMC card in initialized or
19   doesn't have hardware reset logic connected to emmc card and (limited or
20   broken) ROM bootloaders are unable to read second stage from the emmc
25     const: mmc-pwrseq-emmc
27   reset-gpios:
28     minItems: 1
31       and then deasserted to perform eMMC card reset. To perform
36   - compatible
37   - reset-gpios
42   - |
43     #include <dt-bindings/gpio/gpio.h>
45       compatible = "mmc-pwrseq-emmc";
46       reset-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>;