linux-kernel - [PATCH v4] DTS: ARM: OMAP5: uevm: add µSD card detect

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Date:   Mon, 15 May 2017 10:31:16 +0200
From:   "H. Nikolaus Schaller" <hns@...delico.com>
To:     Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>
Cc:     letux-kernel@...nphoenux.org, kernel@...a-handheld.com,
        linux-omap@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        "H. Nikolaus Schaller" <hns@...delico.com>
Subject: [PATCH v4] DTS: ARM: OMAP5: uevm: add µSD card detect

If we have Linux installed in eMMC we can boot without
µSD card, but inserting one is not recognised.

The reason is that the card detect gpio (gpio5_152)
is not configured and attached to the mmc1 interface
driver and the mmc driver does not poll by default.

Hence we add pinmux and gpio setup for the SDCARD_NCD
signal.

Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
---
 arch/arm/boot/dts/omap5-uevm.dts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
index d58b034513da..1a6e28c3d847 100644
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/arm/boot/dts/omap5-uevm.dts
@@ -142,6 +142,13 @@
 	};
 };
 
+&mmc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc1_pins>;
+
+	cd-gpios = <&gpio5 24 GPIO_ACTIVE_LOW>;	/* gpio5_152 */
+};
+
 &omap5_pmx_core {
 	evm_keys_pins: pinmux_evm_keys_gpio_pins {
 		pinctrl-single,pins = <
@@ -161,6 +168,12 @@
 			OMAP5_IOPAD(0x0a8, PIN_INPUT_PULLUP | MUX_MODE6)	/* gpio3_76 */
 		>;
 	};
+
+	mmc1_pins: pinmux_mmc1_pins {
+		pinctrl-single,pins = <
+			OMAP5_IOPAD(0x1d4, PIN_INPUT_PULLUP | MUX_MODE6)	/* gpio5_152 */
+		>;
+	};
 };
 
 &tpd12s015 {
-- 
2.12.2