From d1eb7eae18b1d8e4343533a75f2b8aa355cf2040 Mon Sep 17 00:00:00 2001 From: Yi Liu Date: Thu, 27 Sep 2018 11:30:18 +0800 Subject: [PATCH] spi: rockchip: support to set lsb into ROCKCHIP_SPI_CTRLR0 Change-Id: I55421b4685c88fe55c928ac7d102abb7d39e902f Signed-off-by: Yi Liu --- drivers/spi/spi-rockchip.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c index 792d842e99e9..6f4189f3f315 100644 --- a/drivers/spi/spi-rockchip.c +++ b/drivers/spi/spi-rockchip.c @@ -520,6 +520,8 @@ static void rockchip_spi_config(struct rockchip_spi *rs) cr0 |= (rs->n_bytes << CR0_DFS_OFFSET); cr0 |= ((rs->mode & 0x3) << CR0_SCPH_OFFSET); + if (rs->mode & SPI_LSB_FIRST) + cr0 |= (1 << CR0_FBM_OFFSET);/* First Bit Mode */ cr0 |= (rs->tmode << CR0_XFM_OFFSET); cr0 |= (rs->type << CR0_FRF_OFFSET); @@ -737,7 +739,7 @@ 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 = 2; master->dev.of_node = pdev->dev.of_node; master->bits_per_word_mask = SPI_BPW_MASK(16) | SPI_BPW_MASK(8);