From: Chaotian Jing <chaotian.jing@mediatek.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Chaotian Jing <chaotian.jing@mediatek.com>,
Ryder Lee <ryder.lee@mediatek.com>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Sean Wang <sean.wang@mediatek.com>, <linux-mmc@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <srv_heupstream@mediatek.com>
Subject: [PATCH v1 1/2] mmc: dt-bindings: add "bus-clk" for MT2712
Date: Sat, 29 Sep 2018 10:29:54 +0800 [thread overview]
Message-ID: <1538188195-3608-1-git-send-email-chaotian.jing@mediatek.com> (raw)
On MT2712 MSDC0/3, HCLK/bus-clk need gate/ungate together,
or will hang when access MSDC register.
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
---
Documentation/devicetree/bindings/mmc/mtk-sd.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.txt b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
index f33467a..f2208f4 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.txt
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.txt
@@ -22,6 +22,7 @@ Required properties:
"source" - source clock (required)
"hclk" - HCLK which used for host (required)
"source_cg" - independent source clock gate (required for MT2712)
+ "bus_clk" - bus clock used for internal register access (required for MT2712 MSDC0/3)
- pinctrl-names: should be "default", "state_uhs"
- pinctrl-0: should contain default/high speed pin ctrl
- pinctrl-1: should contain uhs mode pin ctrl
--
1.8.1.1.dirty
next reply other threads:[~2018-09-29 2:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-29 2:29 Chaotian Jing [this message]
2018-09-29 2:29 ` [PATCH v1 2/2] mmc: mediatek: add bus_clk control Chaotian Jing
2018-09-29 12:56 ` Matthias Brugger
2018-10-08 11:51 ` Ulf Hansson
2018-10-08 11:51 ` [PATCH v1 1/2] mmc: dt-bindings: add "bus-clk" for MT2712 Ulf Hansson
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