From: Axe Yang <axe.yang@mediatek.com>
To: Ulf Hansson <ulf.hansson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Chaotian Jing <chaotian.jing@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Adrian Hunter <adrian.hunter@intel.com>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Satya Tangirala <satyat@google.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Axe Yang <axe.yang@mediatek.com>, Lucas Stach <dev@lynxeye.de>,
Eric Biggers <ebiggers@google.com>,
Andrew Jeffery <andrew@aj.id.au>,
Stephen Boyd <swboyd@chromium.org>,
Kiwoong Kim <kwmad.kim@samsung.com>, Yue Hu <huyue2@yulong.com>,
Tian Tao <tiantao6@hisilicon.com>,
<angelogioacchino.delregno@collabora.com>,
<linux-mmc@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>
Subject: [PATCH v8 1/3] dt-bindings: mmc: mtk-sd: extend interrupts and pinctrls properties
Date: Mon, 21 Mar 2022 19:51:32 +0800 [thread overview]
Message-ID: <20220321115133.32121-2-axe.yang@mediatek.com> (raw)
In-Reply-To: <20220321115133.32121-1-axe.yang@mediatek.com>
Extend interrupts and pinctrls for SDIO wakeup interrupt feature.
This feature allow SDIO devices alarm asynchronous interrupt to host
even when host stop providing clock to SDIO card. An extra wakeup
interrupt and pinctrl states for SDIO DAT1 pin state switching are
required in this scenario.
Signed-off-by: Axe Yang <axe.yang@mediatek.com>
---
.../devicetree/bindings/mmc/mtk-sd.yaml | 23 ++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
index 297ada03e3de..f57774535a1d 100644
--- a/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
+++ b/Documentation/devicetree/bindings/mmc/mtk-sd.yaml
@@ -69,12 +69,23 @@ properties:
- const: ahb_cg
interrupts:
- maxItems: 1
+ description:
+ Should at least contain MSDC GIC interrupt. To support SDIO in-band wakeup, an extended
+ interrupt is required and be configured as wakeup source irq.
+ minItems: 1
+ maxItems: 2
pinctrl-names:
+ description:
+ Should at least contain default and state_uhs. To support SDIO in-band wakeup, dat1 pin
+ will be switched between GPIO mode and SDIO DAT1 mode, state_eint and state_dat1 are
+ mandatory in this scenarios.
+ minItems: 2
items:
- const: default
- const: state_uhs
+ - const: state_eint
+ - const: state_dat1
pinctrl-0:
description:
@@ -86,6 +97,16 @@ properties:
should contain uhs mode pin ctrl.
maxItems: 1
+ pinctrl-2:
+ description:
+ should switch dat1 pin to GPIO mode.
+ maxItems: 1
+
+ pinctrl-3:
+ description:
+ should switch SDIO dat1 pin from GPIO mode back to SDIO mode.
+ maxItems: 1
+
assigned-clocks:
description:
PLL of the source clock.
--
2.25.1
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next prev parent reply other threads:[~2022-03-21 11:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-21 11:51 [PATCH v8 0/3] mmc: mediatek: add support for SDIO async IRQ Axe Yang
2022-03-21 11:51 ` Axe Yang [this message]
2022-03-21 23:29 ` [PATCH v8 1/3] dt-bindings: mmc: mtk-sd: extend interrupts and pinctrls properties Rob Herring
2022-03-22 1:35 ` Axe Yang
2022-03-22 8:42 ` AngeloGioacchino Del Regno
2022-03-22 9:33 ` Axe Yang
2022-03-22 16:42 ` Rob Herring
2022-03-23 3:38 ` Axe Yang
2022-03-21 11:51 ` [PATCH v8 2/3] mmc: core: Add support for SDIO wakeup interrupt Axe Yang
2022-03-21 11:51 ` [PATCH v8 3/3] mmc: mediatek: add support for SDIO eint wakup IRQ Axe Yang
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