Re: [PATCH v3] mmc: dt-bindings: Add reg/source_cg/latch-ck for Mediatek MMC bindings

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 






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@xxxxxxxxxxxx>
---
  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 devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]


  Powered by Linux