| Message ID | 1480070076-6196-10-git-send-email-yt.shen@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi, YT: On Fri, 2016-11-25 at 18:34 +0800, YT Shen wrote: > modify data rate limitation (>lGbps/lane) for mipitx > I think MT2701 DRM can work correctly without this patch. Why do you put this patch in MT2701 series? Maybe you can send this patch independently. Regards, CK > Signed-off-by: shaoming chen <shaoming.chen@mediatek.com> > Signed-off-by: YT Shen <yt.shen@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c > index fd84914..1ef00ac 100644 > --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c > +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c > @@ -177,7 +177,9 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) > > dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate); > > - if (mipi_tx->data_rate >= 500000000) { > + if (mipi_tx->data_rate > 1250000000) { > + return -EINVAL; > + } else if (mipi_tx->data_rate >= 500000000) { > txdiv = 1; > txdiv0 = 0; > txdiv1 = 0;
diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c index fd84914..1ef00ac 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c @@ -177,7 +177,9 @@ static int mtk_mipi_tx_pll_prepare(struct clk_hw *hw) dev_dbg(mipi_tx->dev, "prepare: %u Hz\n", mipi_tx->data_rate); - if (mipi_tx->data_rate >= 500000000) { + if (mipi_tx->data_rate > 1250000000) { + return -EINVAL; + } else if (mipi_tx->data_rate >= 500000000) { txdiv = 1; txdiv0 = 0; txdiv1 = 0;