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Diffstat (limited to 'Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt')
-rw-r--r-- | Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt b/Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt deleted file mode 100644 index 3d965d57e00b..000000000000 --- a/Documentation/devicetree/bindings/mmc/mmc-pwrseq-emmc.txt +++ /dev/null @@ -1,25 +0,0 @@ -* The simple eMMC hardware reset provider - -The purpose of this driver is to perform standard eMMC hw reset -procedure, as described by Jedec 4.4 specification. This procedure is -performed just after MMC core enabled power to the given mmc host (to -fix possible issues if bootloader has left eMMC card in initialized or -unknown state), and before performing complete system reboot (also in -case of emergency reboot call). The latter is needed on boards, which -doesn't have hardware reset logic connected to emmc card and (limited or -broken) ROM bootloaders are unable to read second stage from the emmc -card if the card is left in unknown or already initialized state. - -Required properties: -- compatible : contains "mmc-pwrseq-emmc". -- reset-gpios : contains a GPIO specifier. The reset GPIO is asserted - and then deasserted to perform eMMC card reset. To perform - reset procedure as described in Jedec 4.4 specification, the - gpio line should be defined as GPIO_ACTIVE_LOW. - -Example: - - sdhci0_pwrseq { - compatible = "mmc-pwrseq-emmc"; - reset-gpios = <&gpio1 12 GPIO_ACTIVE_LOW>; - } |