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Unverified Commit 04290192 authored by Emil Renner Berthing's avatar Emil Renner Berthing Committed by Mark Brown
Browse files

spi: rockchip: support lsb-first mode 



Add missing support for lsb-first mode.

Signed-off-by: default avatarEmil Renner Berthing <kernel@esmil.dk>
Tested-by: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 65498c6a

drivers/spi/spi-rockchip.c

+3 −1
Original line number Diff line number Diff line
@@ -476,6 +476,8 @@ static void rockchip_spi_config(struct rockchip_spi *rs, 


	cr0 |= rs->rsd << CR0_RSD_OFFSET;

	cr0 |= (spi->mode & 0x3U) << CR0_SCPH_OFFSET;

	if (spi->mode & SPI_LSB_FIRST)

		cr0 |= CR0_FBM_LSB << CR0_FBM_OFFSET;



	if (xfer->rx_buf && xfer->tx_buf)

		cr0 |= CR0_XFM_TR << CR0_XFM_OFFSET;
@@ -681,7 +683,7 @@ static int rockchip_spi_probe(struct platform_device *pdev) 


	master->auto_runtime_pm = true;

	master->bus_num = pdev->id;

	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP;

	master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_LOOP | SPI_LSB_FIRST;

	master->num_chipselect = ROCKCHIP_SPI_MAX_CS_NUM;

	master->dev.of_node = pdev->dev.of_node;

	master->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8) | SPI_BPW_MASK(4);