From: Fabio Estevam <festevam@gmail.com>
To: shawnguo@kernel.org
Cc: linux-arm-kernel@lists.infradead.org, robh+dt@kernel.org,
Fabio Estevam <festevam@gmail.com>,
linux-imx@nxp.com, kernel@pengutronix.de
Subject: [PATCH] ARM: dts: imx6ul-14x14-evk: Pass the "broken-cd" property
Date: Mon, 6 Jan 2020 21:11:17 -0300 [thread overview]
Message-ID: <20200107001117.2009-1-festevam@gmail.com> (raw)
imx6ul-14x14-evk does not have a GPIO dedicated for reading the card
detect pin on the eSDHC2 micro-SD port.
Pass the "broken-cd" property to describe the absence of the card detect
GPIO so that polling must be used.
According to Documentation/devicetree/bindings/mmc/mmc-controller.yaml:
broken-cd:
$ref: /schemas/types.yaml#/definitions/flag
description:
There is no card detection available; polling must be used.
Even though no error is oberved in the kernel, the lack of the
'broken-cd' property caused the micro-SD to not be detected in U-Boot,
so let's improve the device tree description to make it more accurate.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
arch/arm/boot/dts/imx6ul-14x14-evk.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi b/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi
index 212144511b66..265bf4108cb6 100644
--- a/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi
+++ b/arch/arm/boot/dts/imx6ul-14x14-evk.dtsi
@@ -327,6 +327,7 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2>;
no-1-8-v;
+ broken-cd;
keep-power-in-suspend;
wakeup-source;
status = "okay";
--
2.17.1
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next reply other threads:[~2020-01-07 0:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 0:11 Fabio Estevam [this message]
2020-01-09 10:45 ` [PATCH] ARM: dts: imx6ul-14x14-evk: Pass the "broken-cd" property Shawn Guo
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