| Message ID | 1506081829-29296-1-git-send-email-chaotian.jing@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 09/22/2017 02:03 PM, Chaotian Jing wrote: > Change the comptiable for support of multi-platform > Add description for reg > Add description for source_cg > Add description for mediatek,latch-ck > Note that source_cg and mediatek,latch-ck are optional for some projects, > eg, MT2701 do not have source_cg, and MT2712 do not need > mediatek,latch-ck > > Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> > --- > Documentation/devicetree/bindings/mmc/mtk-sd.txt | 13 ++++++++++--- > 1 file changed, 10 insertions(+), 3 deletions(-) > > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > index 4182ea3..b934a29 100644 > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > @@ -7,10 +7,15 @@ This file documents differences between the core properties in mmc.txt > and the properties used by the msdc driver. > > Required properties: > -- compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc" > +- compatible: value should be either of the following. > + "mediatek,mt8135-mmc": for mmc host ip compatible with mt8135 > + "mediatek,mt8173-mmc": for mmc host ip compatible with mt8173 > + "mediatek,mt2701-mmc": for mmc host ip compatible with mt2701 > + "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712 NAK, this has to be: You have to add the fallback comatible ("mediatek,mt8135-mmc") to the binding description as otherwise the driver does not get probed. Regards, Matthias > +- reg: physical base address of the controller and length > - interrupts: Should contain MSDC interrupt number > -- clocks: MSDC source clock, HCLK > -- clock-names: "source", "hclk" > +- clocks: MSDC source clock, HCLK, source_cg > +- clock-names: "source", "hclk", "source_cg" > - pinctrl-names: should be "default", "state_uhs" > - pinctrl-0: should contain default/high speed pin ctrl > - pinctrl-1: should contain uhs mode pin ctrl > @@ -30,6 +35,8 @@ Optional properties: > - mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection > If present,HS400 command responses are sampled on rising edges. > If not present,HS400 command responses are sampled on falling edges. > +- mediatek,latch-ck: Some SoCs do not support enhance_rx, need set correct latch-ck to avoid data crc > + error caused by stop clock(fifo full) > > Examples: > mmc0: mmc@11230000 { > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Fri, 2017-09-29 at 13:11 +0200, Matthias Brugger wrote: > > On 09/22/2017 02:03 PM, Chaotian Jing wrote: > > Change the comptiable for support of multi-platform > > Add description for reg > > Add description for source_cg > > Add description for mediatek,latch-ck > > Note that source_cg and mediatek,latch-ck are optional for some projects, > > eg, MT2701 do not have source_cg, and MT2712 do not need > > mediatek,latch-ck > > > > Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> > > --- > > Documentation/devicetree/bindings/mmc/mtk-sd.txt | 13 ++++++++++--- > > 1 file changed, 10 insertions(+), 3 deletions(-) > > > > diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > > index 4182ea3..b934a29 100644 > > --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt > > +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt > > @@ -7,10 +7,15 @@ This file documents differences between the core properties in mmc.txt > > and the properties used by the msdc driver. > > > > Required properties: > > -- compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc" > > +- compatible: value should be either of the following. > > + "mediatek,mt8135-mmc": for mmc host ip compatible with mt8135 > > + "mediatek,mt8173-mmc": for mmc host ip compatible with mt8173 > > + "mediatek,mt2701-mmc": for mmc host ip compatible with mt2701 > > + "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712 > > NAK, this has to be: > You have to add the fallback compatible ("mediatek,mt8135-mmc") to the binding > description as otherwise the driver does not get probed. > > Regards, > Matthias Thanks for your comments, will add the fallback compatible ("mediatek,mt8135-mmc") to the binding in this patch. but, is possible to remove the fallback compatible at next patch ? eg, following patches will modify the driver like below: static const struct of_device_id msdc_of_ids[] = { { .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat}, { .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat}, }; then, there is no probe issue and remove the fallback compatible. Thx! > > > +- reg: physical base address of the controller and length > > - interrupts: Should contain MSDC interrupt number > > -- clocks: MSDC source clock, HCLK > > -- clock-names: "source", "hclk" > > +- clocks: MSDC source clock, HCLK, source_cg > > +- clock-names: "source", "hclk", "source_cg" > > - pinctrl-names: should be "default", "state_uhs" > > - pinctrl-0: should contain default/high speed pin ctrl > > - pinctrl-1: should contain uhs mode pin ctrl > > @@ -30,6 +35,8 @@ Optional properties: > > - mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection > > If present,HS400 command responses are sampled on rising edges. > > If not present,HS400 command responses are sampled on falling edges. > > +- mediatek,latch-ck: Some SoCs do not support enhance_rx, need set correct latch-ck to avoid data crc > > + error caused by stop clock(fifo full) > > > > Examples: > > mmc0: mmc@11230000 { > > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 09/29/2017 01:50 PM, Chaotian Jing wrote: > On Fri, 2017-09-29 at 13:11 +0200, Matthias Brugger wrote: >> >> On 09/22/2017 02:03 PM, Chaotian Jing wrote: >>> Change the comptiable for support of multi-platform >>> Add description for reg >>> Add description for source_cg >>> Add description for mediatek,latch-ck >>> Note that source_cg and mediatek,latch-ck are optional for some projects, >>> eg, MT2701 do not have source_cg, and MT2712 do not need >>> mediatek,latch-ck >>> >>> Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> >>> --- >>> Documentation/devicetree/bindings/mmc/mtk-sd.txt | 13 ++++++++++--- >>> 1 file changed, 10 insertions(+), 3 deletions(-) >>> >>> diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt >>> index 4182ea3..b934a29 100644 >>> --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt >>> +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt >>> @@ -7,10 +7,15 @@ This file documents differences between the core properties in mmc.txt >>> and the properties used by the msdc driver. >>> >>> Required properties: >>> -- compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc" >>> +- compatible: value should be either of the following. >>> + "mediatek,mt8135-mmc": for mmc host ip compatible with mt8135 >>> + "mediatek,mt8173-mmc": for mmc host ip compatible with mt8173 >>> + "mediatek,mt2701-mmc": for mmc host ip compatible with mt2701 >>> + "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712 >> >> NAK, this has to be: >> You have to add the fallback compatible ("mediatek,mt8135-mmc") to the binding >> description as otherwise the driver does not get probed. >> >> Regards, >> Matthias > > Thanks for your comments, will add the fallback compatible > ("mediatek,mt8135-mmc") to the binding in this patch. > but, is possible to remove the fallback compatible at next patch ? > eg, following patches will modify the driver like below: > static const struct of_device_id msdc_of_ids[] = { > { .compatible = "mediatek,mt8135-mmc", .data = &mt8135_compat}, > { .compatible = "mediatek,mt8173-mmc", .data = &mt8173_compat}, > }; > then, there is no probe issue and remove the fallback compatible. > Thx! Right, if you have an explicit compatible in the driver, we don't need the fallback. But it doesn't hurt neither. As you like. Regards, Matthias >> >>> +- reg: physical base address of the controller and length >>> - interrupts: Should contain MSDC interrupt number >>> -- clocks: MSDC source clock, HCLK >>> -- clock-names: "source", "hclk" >>> +- clocks: MSDC source clock, HCLK, source_cg >>> +- clock-names: "source", "hclk", "source_cg" >>> - pinctrl-names: should be "default", "state_uhs" >>> - pinctrl-0: should contain default/high speed pin ctrl >>> - pinctrl-1: should contain uhs mode pin ctrl >>> @@ -30,6 +35,8 @@ Optional properties: >>> - mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection >>> If present,HS400 command responses are sampled on rising edges. >>> If not present,HS400 command responses are sampled on falling edges. >>> +- mediatek,latch-ck: Some SoCs do not support enhance_rx, need set correct latch-ck to avoid data crc >>> + error caused by stop clock(fifo full) >>> >>> Examples: >>> mmc0: mmc@11230000 { >>> > > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt index 4182ea3..b934a29 100644 --- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt +++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt @@ -7,10 +7,15 @@ This file documents differences between the core properties in mmc.txt and the properties used by the msdc driver. Required properties: -- compatible: Should be "mediatek,mt8173-mmc","mediatek,mt8135-mmc" +- compatible: value should be either of the following. + "mediatek,mt8135-mmc": for mmc host ip compatible with mt8135 + "mediatek,mt8173-mmc": for mmc host ip compatible with mt8173 + "mediatek,mt2701-mmc": for mmc host ip compatible with mt2701 + "mediatek,mt2712-mmc": for mmc host ip compatible with mt2712 +- reg: physical base address of the controller and length - interrupts: Should contain MSDC interrupt number -- clocks: MSDC source clock, HCLK -- clock-names: "source", "hclk" +- clocks: MSDC source clock, HCLK, source_cg +- clock-names: "source", "hclk", "source_cg" - pinctrl-names: should be "default", "state_uhs" - pinctrl-0: should contain default/high speed pin ctrl - pinctrl-1: should contain uhs mode pin ctrl @@ -30,6 +35,8 @@ Optional properties: - mediatek,hs400-cmd-resp-sel-rising: HS400 command response sample selection If present,HS400 command responses are sampled on rising edges. If not present,HS400 command responses are sampled on falling edges. +- mediatek,latch-ck: Some SoCs do not support enhance_rx, need set correct latch-ck to avoid data crc + error caused by stop clock(fifo full) Examples: mmc0: mmc@11230000 {
Change the comptiable for support of multi-platform Add description for reg Add description for source_cg Add description for mediatek,latch-ck Note that source_cg and mediatek,latch-ck are optional for some projects, eg, MT2701 do not have source_cg, and MT2712 do not need mediatek,latch-ck Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com> --- Documentation/devicetree/bindings/mmc/mtk-sd.txt | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-)