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spi: rockchip: transfer SPI slave by CPU loop

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Change-Id: Ifa2b7f92ff5aacaf30c4a3fa362ddabaff1a50c7
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin
2020-04-10 15:56:14 +08:00
committed by Dingqiang Lin
parent 79893b21b7
commit 846019f5fa
1 changed files with 2 additions and 1 deletions
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3
drivers/spi/spi-rockchip.c
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@@ -818,7 +818,8 @@ static int rockchip_spi_probe(struct platform_device *pdev)
rs->dma_rx.ch = NULL;
}
if (rs->dma_tx.ch && rs->dma_rx.ch) {
if (rs->dma_tx.ch && rs->dma_rx.ch &&
!spi_controller_is_slave(master)) {
dma_get_slave_caps(rs->dma_rx.ch, &(rs->dma_caps));
rs->dma_tx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_TXDR);
rs->dma_rx.addr = (dma_addr_t)(mem->start + ROCKCHIP_SPI_RXDR);