diff options
Diffstat (limited to 'hw/ssi/imx_spi.c')
| -rw-r--r-- | hw/ssi/imx_spi.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/hw/ssi/imx_spi.c b/hw/ssi/imx_spi.c index 2fb65498c3..41fe199c9f 100644 --- a/hw/ssi/imx_spi.c +++ b/hw/ssi/imx_spi.c @@ -128,7 +128,14 @@ static uint8_t imx_spi_selected_channel(IMXSPIState *s) static uint32_t imx_spi_burst_length(IMXSPIState *s) { - return EXTRACT(s->regs[ECSPI_CONREG], ECSPI_CONREG_BURST_LENGTH) + 1; + uint32_t burst; + + burst = EXTRACT(s->regs[ECSPI_CONREG], ECSPI_CONREG_BURST_LENGTH) + 1; + if (burst % 8) { + burst = ROUND_UP(burst, 8); + } + + return burst; } static bool imx_spi_is_enabled(IMXSPIState *s) @@ -328,6 +335,7 @@ static void imx_spi_write(void *opaque, hwaddr offset, uint64_t value, IMXSPIState *s = opaque; uint32_t index = offset >> 2; uint32_t change_mask; + uint32_t burst; if (index >= ECSPI_MAX) { qemu_log_mask(LOG_GUEST_ERROR, "[%s]%s: Bad register at offset 0x%" @@ -380,6 +388,13 @@ static void imx_spi_write(void *opaque, hwaddr offset, uint64_t value, case ECSPI_CONREG: s->regs[ECSPI_CONREG] = value; + burst = EXTRACT(s->regs[ECSPI_CONREG], ECSPI_CONREG_BURST_LENGTH) + 1; + if (burst % 8) { + qemu_log_mask(LOG_UNIMP, + "[%s]%s: burst length %d not supported: rounding up to next multiple of 8\n", + TYPE_IMX_SPI, __func__, burst); + } + if (!imx_spi_is_enabled(s)) { /* device is disabled, so this is a soft reset */ imx_spi_soft_reset(s); |