> -----Original Message----- > From: Frank Li <frank.li@xxxxxxx> > Sent: 2024年3月4日 12:33 > To: Vinod Koul <vkoul@xxxxxxxxxx>; Shawn Guo <shawnguo@xxxxxxxxxx>; > Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>; Pengutronix Kernel Team > <kernel@xxxxxxxxxxxxxx>; Fabio Estevam <festevam@xxxxxxxxx>; > dl-linux-imx <linux-imx@xxxxxxx> > Cc: dmaengine@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; imx@xxxxxxxxxxxxxxx; Frank Li > <frank.li@xxxxxxx>; S.J. Wang <shengjiu.wang@xxxxxxx>; Vipul Kumar > <vipul_kumar@xxxxxxxxxx>; Srikanth Krishnakar > <Srikanth_Krishnakar@xxxxxxxxxx>; Robin Gong <yibin.gong@xxxxxxx> > Subject: [PATCH 2/4] dmaengine: imx-sdma: Support 24bit/3bytes for sg > mode > > From: Shengjiu Wang <shengjiu.wang@xxxxxxx> > > Update 3bytes buswidth that is supported by sdma. > > Signed-off-by: Shengjiu Wang <shengjiu.wang@xxxxxxx> > Signed-off-by: Vipul Kumar <vipul_kumar@xxxxxxxxxx> > Signed-off-by: Srikanth Krishnakar <Srikanth_Krishnakar@xxxxxxxxxx> > Acked-by: Robin Gong <yibin.gong@xxxxxxx> > Signed-off-by: Frank Li <Frank.Li@xxxxxxx> Reviewed-by: Joy Zou <joy.zou@xxxxxxx> BR Joy Zou > --- > drivers/dma/imx-sdma.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index > 9a6d8f1e9ff63..ef45420485dac 100644 > --- a/drivers/dma/imx-sdma.c > +++ b/drivers/dma/imx-sdma.c > @@ -176,6 +176,7 @@ > > #define SDMA_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) > | \ > BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | \ > + BIT(DMA_SLAVE_BUSWIDTH_3_BYTES) | \ > BIT(DMA_SLAVE_BUSWIDTH_4_BYTES)) > > #define SDMA_DMA_DIRECTIONS (BIT(DMA_DEV_TO_MEM) | \ > @@ -1659,6 +1660,9 @@ static struct dma_async_tx_descriptor > *sdma_prep_slave_sg( > if (count & 3 || sg->dma_address & 3) > goto err_bd_out; > break; > + case DMA_SLAVE_BUSWIDTH_3_BYTES: > + bd->mode.command = 3; > + break; > case DMA_SLAVE_BUSWIDTH_2_BYTES: > bd->mode.command = 2; > if (count & 1 || sg->dma_address & 1) > > -- > 2.34.1
