2018-05-07 10:07:32 +00:00
|
|
|
From 9ff279fef1a47a152993bf23f8d75fd233c27015 Mon Sep 17 00:00:00 2001
|
|
|
|
|
From: Chaotian Jing <chaotian.jing@mediatek.com>
|
|
|
|
|
Date: Mon, 16 Oct 2017 09:46:28 +0800
|
|
|
|
|
Subject: [PATCH 142/224] mmc: dt-bindings: Add reg/source_cg/latch-ck for
|
|
|
|
|
Mediatek MMC bindings
|
|
|
|
|
|
|
|
|
|
Change the comptiable for support of multi-platform
|
|
|
|
|
Make compatible explicit, as MMC host of mt8173 has difference with
|
|
|
|
|
mt8135(mt8173 supports hs400 and hs400_tune),so that need separate
|
|
|
|
|
mt8173/mt8135 compatible name.
|
|
|
|
|
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>
|
|
|
|
|
Acked-by: Rob Herring <robh@kernel.org>
|
|
|
|
|
Tested-by: Sean Wang <sean.wang@mediatek.com>
|
|
|
|
|
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
|
|
|
|
|
---
|
|
|
|
|
Documentation/devicetree/bindings/mmc/mtk-sd.txt | 18 +++++++++++++++---
|
|
|
|
|
1 file changed, 15 insertions(+), 3 deletions(-)
|
|
|
|
|
|
|
|
|
|
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
|
|
|
|
|
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
|
2018-05-28 21:10:44 +00:00
|
|
|
@@ -7,10 +7,18 @@ This file documents differences between
|
2018-05-07 10:07:32 +00:00
|
|
|
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: Should contain phandle for the clock feeding the MMC controller
|
|
|
|
|
+- clock-names: Should contain the following:
|
|
|
|
|
+ "source" - source clock (required)
|
|
|
|
|
+ "hclk" - HCLK which used for host (required)
|
|
|
|
|
+ "source_cg" - independent source clock gate (required for MT2712)
|
|
|
|
|
- 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 +38,10 @@ 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)
|
|
|
|
|
+ Valid range = [0:0x7]. if not present, default value is 0.
|
|
|
|
|
+ applied to compatible "mediatek,mt2701-mmc".
|
|
|
|
|
|
|
|
|
|
Examples:
|
|
|
|
|
mmc0: mmc@11230000 {
|
