diff options
Diffstat (limited to 'target/linux/mediatek/patches-4.14/0142-mmc-dt-bindings-Add-reg-source_cg-latch-ck-for-Media.patch')
| -rw-r--r-- | target/linux/mediatek/patches-4.14/0142-mmc-dt-bindings-Add-reg-source_cg-latch-ck-for-Media.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/target/linux/mediatek/patches-4.14/0142-mmc-dt-bindings-Add-reg-source_cg-latch-ck-for-Media.patch b/target/linux/mediatek/patches-4.14/0142-mmc-dt-bindings-Add-reg-source_cg-latch-ck-for-Media.patch new file mode 100644 index 0000000000..77190abd76 --- /dev/null +++ b/target/linux/mediatek/patches-4.14/0142-mmc-dt-bindings-Add-reg-source_cg-latch-ck-for-Media.patch @@ -0,0 +1,65 @@ +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(-) + +diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt +index 4182ea36ca5b..72d2a734ab85 100644 +--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt ++++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt +@@ -7,10 +7,18 @@ 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: 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 { +-- +2.11.0 + |