Messages in this thread | | | Subject | Re: [PATCH 1/3] memory: mtk-smi: add larbid init routine | From | Matthias Brugger <> | Date | Thu, 27 Jul 2017 17:42:29 +0200 |
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On 07/27/2017 04:01 AM, honghui.zhang@mediatek.com wrote: > From: Honghui Zhang <honghui.zhang@mediatek.com> > > In the commit 3c8f4ad85c4b ("memory/mediatek: add support for mt2701"), > the larb->larbid was added but not initialized. > Mediatek's gen1 smi need this hardware larbid information to get the > register offset which controls whether enable iommu for this larb. > This patch add the initialize routine for larbid. > > Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com> > --- > drivers/memory/mtk-smi.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c > index 2b798bb4..fe36b3e 100644 > --- a/drivers/memory/mtk-smi.c > +++ b/drivers/memory/mtk-smi.c > @@ -240,6 +240,7 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) > struct device *dev = &pdev->dev; > struct device_node *smi_node; > struct platform_device *smi_pdev; > + int err; > > if (!dev->pm_domain) > return -EPROBE_DEFER; > @@ -263,6 +264,14 @@ static int mtk_smi_larb_probe(struct platform_device *pdev) > return PTR_ERR(larb->smi.clk_smi); > larb->smi.dev = dev; > > + err = of_property_read_u32(dev->of_node, "mediatek,larbid", > + &larb->larbid); > + if (err && of_device_is_compatible(dev->of_node, > + "mediatek,mt2701-smi-larb")) {
Instead of checking hard-coded bindings you should be able to determine the generation using the smi_pdev. Apart I think it would be better to check for mediatek,larbid only on MTK_SIM_GEN1, or do I miss something?
Regards, Matthias
> + dev_err(dev, "missing larbid property\n"); > + return err; > + } > + > smi_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0); > if (!smi_node) > return -EINVAL; >
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