diff options
Diffstat (limited to 'chip/g/usb_spi.c')
| -rw-r--r-- | chip/g/usb_spi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/chip/g/usb_spi.c b/chip/g/usb_spi.c index 54f32fd553..5d436a1b83 100644 --- a/chip/g/usb_spi.c +++ b/chip/g/usb_spi.c @@ -10,6 +10,7 @@ #include "registers.h" #include "spi.h" #include "spi_flash.h" +#include "timer.h" #include "usb_descriptor.h" #include "usb_spi.h" #include "util.h" @@ -44,6 +45,14 @@ static uint16_t usb_spi_read_packet(struct usb_spi_config const *config) static void usb_spi_write_packet(struct usb_spi_config const *config, uint8_t count) { + /* + * Experiments show that while reading a 16M flash time spent waiting + * is less than 30 ms, which is negligible in this case, as the AP is + * held in reset. + */ + while (queue_space(config->tx_queue) < count) + msleep(1); + #ifdef CONFIG_STREAM_SIGNATURE /* * This hook allows mn50 to sign SPI data read from newly |