The SD physical layer specification requires that the operating supply
be stable for at least 1 millisecond before providing the required 74
clocks. The maximum VDD ramp time is specified at 35ms, giving a total
minimum delay of 36ms.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Add missing braces to comply with MISRA C:2012 Rule 15.6 and
also following Zephyr's style guideline.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
Use the new `SPI_MOSI_OVERRUN_DT` macro to determine at compile-time
whether the 512 byte array of `sdhc_ones` is required.
Signed-off-by: Jordan Yates <jordan@embeint.com>
Rework CMD12 failure logic for SDHC SPI driver. Previously, the error
code of CMD12 was not checked, so even if CMD12 failed to send the
initial command would be retried. Change this behavior to retry CMD12
until it succeeds. If CMD12 fails, its error code will be propagated to
the caller. Otherwise, the return code from the command being sent by
the caller will be propagated.
Fixes#72365
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Properly release SPI bus on transmit error within the SDHC SPI driver.
In these cases return code is not checked, as we wish to return the
error code from the failed transfer to the SD stack.
Fixes#72364
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This change marks each instance of the 'api' as 'static const'.
The rationale is that 'api' is used for declaring internal
module interfaces and is not intended to be modified at runtime.
By using 'static const', we ensure immutability, leading to usage of only
.rodata and a reduction in the .data area.
Signed-off-by: Pisit Sawangvonganan <pisit@ndrsolution.com>
In sdhc_spi_response_get, the logic for slow cards previously only
retried reads 16 times. Instead of using this approach, read from the
card every 10 ms until the command timeout is reached or it responds.
This way, the command timeout will be respected for cards that do not
respond.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Enable SPI SDHC driver to manage card power via pwr-gpios property.
Control for this property was previously partially implemented. When
this property is present, the SPI SDHC driver will use it to control
power to the SD card.
Power is toggled during SD init, so this power control can make SD init
more reliable as the power toggle will insure the SD card state is reset.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Make it possible to use CPOL/CPHA SPI clock modes with the SDHC driver.
Some cards require the clock to switch to low when not active.
Signed-off-by: Łukasz Hejnak (LeHack) <lehack-ghub@lehack.pl>
Add support for configuring power on delay when using SPI SDHC. This
allows cards that reliably initialize with a shorter (1ms) delay to
avoid the long initialize delay otherwise imposed.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Currently, the sdhc_card_busy function is unimplemented in the
SDHC SPI-driver. This causes some functions which rely on f_sync(),
such as fs_close(), to fail as it will timeout the busy-check. This PR
implements sdhc_card_busy by checking if the MISO-line is kept high to
check if the SD-card is idle (not busy).
Solves https://github.com/zephyrproject-rtos/zephyr/issues/49982
Signed-off-by: Ivan Herrera Olivares <ivan.herreraolivares@uantwerpen.be>
Move to using SPI_CONFIG_DT_INST macro to initialization the
struct spi_config cfg_a. This fixes an issue with how the old
code was initializing the deprecated fields of spi_cs_control.
Signed-off-by: Kumar Gala <galak@kernel.org>
Add SD response type masks, to allow drivers to mask out the
SPI or SD native mode response type based on the SD host controller
mode they use.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
Add SDHC driver implementing spi mode support for SD cards. This driver
implements the standard SD host controller APIs, and sets the host
property "is_spi" to indicate to the SD subsystem the card will be
running in SPI mode.
Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
