diff options
| author | Tom Rini <trini@konsulko.com> | 2024-01-29 12:58:42 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2024-01-29 12:58:42 -0500 |
| commit | 8986be59e7f933a3ba0653ae9aa51cb10e8eac7a (patch) | |
| tree | 38115205facb24a8dfdc4f30f436974d35a1191b /drivers/spi/designware_spi.c | |
| parent | 41a737bb858b0890083c68bfd3813e1dbc18ff55 (diff) | |
| parent | 16dd10951015183f87b8202b8d4c8617da4f6d44 (diff) | |
Merge branch 'master' of https://source.denx.de/u-boot/custodians/u-boot-spi
- Support Infineon S28HS02GT (Takahiro)
Diffstat (limited to 'drivers/spi/designware_spi.c')
| -rw-r--r-- | drivers/spi/designware_spi.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/spi/designware_spi.c b/drivers/spi/designware_spi.c index 1c7d0ca310b..98908c5217f 100644 --- a/drivers/spi/designware_spi.c +++ b/drivers/spi/designware_spi.c @@ -111,6 +111,9 @@ #define SR_TX_ERR BIT(5) #define SR_DCOL BIT(6) +/* Bit field in RISR */ +#define RISR_INT_RXOI BIT(3) + #define RX_TIMEOUT 1000 /* timeout in ms */ struct dw_spi_plat { @@ -588,7 +591,7 @@ static int dw_spi_exec_op(struct spi_slave *slave, const struct spi_mem_op *op) struct dw_spi_priv *priv = dev_get_priv(bus); u8 op_len = op->cmd.nbytes + op->addr.nbytes + op->dummy.nbytes; u8 op_buf[op_len]; - u32 cr0; + u32 cr0, sts; if (read) priv->tmode = CTRLR0_TMOD_EPROMREAD; @@ -632,12 +635,21 @@ static int dw_spi_exec_op(struct spi_slave *slave, const struct spi_mem_op *op) * them to fail because we are not reading/writing the fifo fast enough. */ if (read) { - priv->rx = op->data.buf.in; + void *prev_rx = priv->rx = op->data.buf.in; priv->rx_end = priv->rx + op->data.nbytes; dw_write(priv, DW_SPI_SER, 1 << spi_chip_select(slave->dev)); - while (priv->rx != priv->rx_end) + while (priv->rx != priv->rx_end) { dw_reader(priv); + if (prev_rx == priv->rx) { + sts = dw_read(priv, DW_SPI_RISR); + if (sts & RISR_INT_RXOI) { + dev_err(bus, "FIFO overflow on Rx\n"); + return -EIO; + } + } + prev_rx = priv->rx; + } } else { u32 val; |