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Andrey Zhizhikin 247bbeb74c ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator 
Some SD Card controller and power circuitry has increased capacitance,
which keeps the internal logic remains powered after regulator is switch
off. This is generally the case when card is switched to SD104 mode,
where a power cycle should be performed. In case if the card internal
logic remains powered, it causes a subsequent failure of mode
transition, effectively leading to failed enumeration.

Introduce a delay of 20 msec in order to provide a possibility for
internal card circuitry to drain voltages and perform a power cycle
correctly.

Similar fix is done in commit c49d0ac38a ("ARM: dts: rmobile: Increase
off-on delay on the SD Vcc regulator") targeted Renesas SOCs.

Signed-off-by: Andrey Zhizhikin <andrey.zhizhikin@leica-geosystems.com>
Cc: Stefano Babic <sbabic@denx.de>
2020-12-26 12:36:19 +01:00
..
arc spi: dw: Add SoC-specific compatible strings 2020-12-18 16:16:37 +05:30
arm ARM: dts: imx8m: increase off-on delay on the SD Vcc regulator 2020-12-26 12:36:19 +01:00
m68k arch: Move NEEDS_MANUAL_RELOC symbol to Kconfig 2020-11-04 10:13:44 -05:00
microblaze microblaze: Enable GCC garbage collector for full U-Boot 2020-11-20 10:42:53 +01:00
mips spi: dw: Add SoC-specific compatible strings 2020-12-18 16:16:37 +05:30
nds32 treewide: convert bd_t to struct bd_info by coccinelle 2020-07-17 09:30:13 -04:00
nios2 cpu: Convert the methods to use a const udevice * 2020-07-25 14:46:57 -06:00
powerpc powerpc: mpc85xx: Allow boards to override CONFIG_USB_MAX_CONTROLLER_COUNT 2020-12-10 13:56:39 +05:30
riscv riscv: Add device tree bindings for SPI 2020-12-18 16:16:37 +05:30
sandbox patman status subcommand to collect tags from Patchwork 2020-11-06 11:27:14 -05:00
sh sh: r2dplus: Add SCIF1 to the basic DT 2020-08-02 19:58:27 +02:00
x86 fsp: Move and rename fsp_types.h file 2020-12-22 10:19:40 +08:00
xtensa xtensa: Remove arch_setup_bdinfo() 2020-08-26 09:19:40 +02:00
.gitignore
Kconfig patman status subcommand to collect tags from Patchwork 2020-11-06 11:27:14 -05:00
u-boot-elf.lds arch: Add explicit linker script for u-boot-elf 2020-04-03 11:52:55 -04:00