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increase transmit buffer pointer on each transfer #1

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increase transmit buffer pointer on each transfer #1

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3 changes: 2 additions & 1 deletion drivers/spi/sunxi_spi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -254,10 +254,11 @@ static int sunxi_spi_xfer(struct udevice *dev, unsigned int bitlen,
sunxi_spi_cs_activate(dev, slave_plat->cs);

while (len) {
nbytes = min(len, (size_t)64 - 1);
nbytes = min(len, (size_t) 64);
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@StephanvanSchaik StephanvanSchaik Sep 28, 2017

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As far as I am aware this doesn't work for SPI2 on the A10 (see drivers/spi/spi-sun4i.c in the Linux kernel source).


writel(SUNXI_SPI_BURST_CNT(nbytes), &priv->regs->burst_cnt);
sunxi_spi_write(dev, tx_buf, nbytes);
tx_buf += nbytes;
setbits_le32(&priv->regs->xfer_ctl, SUNXI_SPI_CTL_XCH);

while (((readl(&priv->regs->fifo_sta) &
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