The interrupt period part is not provided in simplified spec. The interrupt period starts 2 to 4 cycles after the completion of last data block transfer and ends after 1 to 3 clocks from beginning of a command that transfers data block. ...
s3c2440芯片中文手册-19 SDIO
Interrupt A signal from the SDIO device to the host signaling the need for attention Interrupt Period The times that a card may generate an interrupt signal on the SD bus Legacy Slot SD Slot that supports only the SD 1.01 specification LOW, HIGH binary interface states with defined assignment ...
aync interrupt flag #define SDIO_CCCR_SUPPORT_8BIT_BUS (1U << 18U) 8 bit data bus flag #define MMC_OCR_V170TO195_SHIFT (7U) The bit mask for VOLTAGE WINDOW 1.70V to 1.95V field in OCR. #define MMC_OCR_V170TO195_MASK (0x00000080U) The bit mask for VOLTAGE WINDOW 1.70V...
In DMA mode, Buffer Data Port 0 (0x20) and Buffer Data Port 1 (0x22) are mapped differently than in Interrupt mode — address line A8 must be at logic 1 when Buffer Data Ports are being accessed while the rest of the address lines are ignored by the SDIO101A. Once the DMA ...
The application interface can send every MMC/SD/SDIO command and either poll for the status of the adapter, wait for an interrupt request, which is sent back in case of exceptions, or warn of the end of the operation. The application interface reads card responses and flag registers, and ...
if (!host->tuning_done) { pr_info(DRIVER_NAME ": Timeout waiting for Buffer Read Ready interrupt during tuning procedure, falling back to fixed sampling clock\n"); ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2); ctrl &= ~SDHCI_CTRL_TUNED_CLK; ctrl &= ~SDHCI_CTRL_EXEC_TUNING;...
gpio_request(SABRESD_ELAN_INT, "elan-interrupt"); gpio_direction_input(SABRESD_ELAN_INT); gpio_request(SABRESD_ELAN_CE, "elan-cs"); gpio_direction_output(SABRESD_ELAN_CE, 1); gpio_direction_output(SABRESD_ELAN_CE, 0); gpio_request(SABRESD_ELAN_RST, "elan-r...
Interrupt A signal from the SDIO device to the host signaling the need for attention Interrupt Period The times that a card may generate an interrupt signal on the SD bus Legacy Slot SD Slot that supports only the SD 1.01 specification LOW, HIGH binary interface states with defined assignment ...