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Commit 04b37d2d authored by Huibin Hong's avatar Huibin Hong Committed by Mark Brown
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spi: rockchip: configure CTRLR1 according to size and data frame 



CTRLR1 is number of data frames, when rx only.
When data frame is 8 bit, CTRLR1 is len-1.
When data frame is 16 bit, CTRLR1 is (len/2)-1.

Signed-off-by: default avatarHuibin Hong <huibin.hong@rock-chips.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 6b860e69

drivers/spi/spi-rockchip.c

+7 −1
Original line number Diff line number Diff line
@@ -568,7 +568,13 @@ static void rockchip_spi_config(struct rockchip_spi *rs) 


	writel_relaxed(cr0, rs->regs + ROCKCHIP_SPI_CTRLR0);



	if (rs->n_bytes == 1)

		writel_relaxed(rs->len - 1, rs->regs + ROCKCHIP_SPI_CTRLR1);

	else if (rs->n_bytes == 2)

		writel_relaxed((rs->len / 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1);

	else

		writel_relaxed((rs->len * 2) - 1, rs->regs + ROCKCHIP_SPI_CTRLR1);



	writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_TXFTLR);

	writel_relaxed(rs->fifo_len / 2 - 1, rs->regs + ROCKCHIP_SPI_RXFTLR);