| Message ID | 1562625253-29254-26-git-send-email-yongqiang.niu@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | add drm support for MT8183 | expand |
Hi, Yongqiang: On Tue, 2019-07-09 at 06:34 +0800, yongqiang.niu@mediatek.com wrote: > From: Yongqiang Niu <yongqiang.niu@mediatek.com> > > This patch add clock property check before get it > > Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com> > --- > drivers/gpu/drm/mediatek/mtk_drm_ddp.c | 10 ++++++---- > 1 file changed, 6 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > index c57e7ab..a9d3e27 100644 > --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c > @@ -668,10 +668,12 @@ static int mtk_ddp_probe(struct platform_device *pdev) > for (i = 0; i < 10; i++) > ddp->mutex[i].id = i; > > - ddp->clk = devm_clk_get(dev, NULL); > - if (IS_ERR(ddp->clk)) { > - dev_err(dev, "Failed to get clock\n"); > - return PTR_ERR(ddp->clk); > + if (of_find_property(dev->of_node, "clocks", &i)) { > + ddp->clk = devm_clk_get(dev, NULL); > + if (IS_ERR(ddp->clk)) { > + dev_err(dev, "Failed to get clock\n"); > + return PTR_ERR(ddp->clk); > + } Only "mediatek,mt8133-disp-mutex" has no clock property. For other SoC, clock property is required. So I think this exception is just for mt8183. Regards, CK > } > > regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c index c57e7ab..a9d3e27 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp.c @@ -668,10 +668,12 @@ static int mtk_ddp_probe(struct platform_device *pdev) for (i = 0; i < 10; i++) ddp->mutex[i].id = i; - ddp->clk = devm_clk_get(dev, NULL); - if (IS_ERR(ddp->clk)) { - dev_err(dev, "Failed to get clock\n"); - return PTR_ERR(ddp->clk); + if (of_find_property(dev->of_node, "clocks", &i)) { + ddp->clk = devm_clk_get(dev, NULL); + if (IS_ERR(ddp->clk)) { + dev_err(dev, "Failed to get clock\n"); + return PTR_ERR(ddp->clk); + } } regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);