linux-kernel - [PATCH V2 2/2] ARM: dts: omap3-ldp: fix mmc configuration

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Date:	Thu, 13 Feb 2014 23:45:49 -0600
From:	Nishanth Menon <nm@...com>
To:	Tony Lindgren <tony@...mide.com>, Balaji T K <balajitk@...com>,
	Chris Ball <chris@...ntf.net>
CC:	<linux-mmc@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, Felipe Balbi <balbi@...com>,
	Nishanth Menon <nm@...com>
Subject: [PATCH V2 2/2] ARM: dts: omap3-ldp: fix mmc configuration

MMC1 is the only MMC interface available on the platform. Further,
since the platform is based on older revision of SoC which is not
capable of doing multi-block reads, mark it with compatibility for the
same and add pinmux to ensure that all relevant pins are configured
for non-MMC boot mode.

Signed-off-by: Nishanth Menon <nm@...com>
---

Changes since V1:
	- fixed commit message as suggested by Balaji.
	- update to use new compatible match for the erratum.

V1: https://patchwork.kernel.org/patch/3514881/

 arch/arm/boot/dts/omap3-ldp.dts |   23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm/boot/dts/omap3-ldp.dts b/arch/arm/boot/dts/omap3-ldp.dts
index ddce0d8..0abe986 100644
--- a/arch/arm/boot/dts/omap3-ldp.dts
+++ b/arch/arm/boot/dts/omap3-ldp.dts
@@ -174,8 +174,20 @@
 };
 
 &mmc1 {
+	/* See 35xx errata 2.1.1.128 in SPRZ278F */
+	compatible = "ti,omap3-pre-es3-hsmmc";
 	vmmc-supply = <&vmmc1>;
 	bus-width = <4>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&mmc1_pins>;
+};
+
+&mmc2 {
+	status="disabled";
+};
+
+&mmc3 {
+	status="disabled";
 };
 
 &omap3_pmx_core {
@@ -209,6 +221,17 @@
 			0x174 (PIN_OUTPUT | MUX_MODE0)	/* hsusb0_stp.hsusb0_stp */
 		>;
 	};
+
+	mmc1_pins: pinmux_mmc1_pins {
+		pinctrl-single,pins = <
+			OMAP3_CORE1_IOPAD(0x2144, PIN_INPUT_PULLUP | MUX_MODE0)	/* mmc1_clk.mmc1_clk */
+			OMAP3_CORE1_IOPAD(0x2146, PIN_INPUT_PULLUP | MUX_MODE0)	/* mmc1_cmd.mmc1_cmd */
+			OMAP3_CORE1_IOPAD(0x2148, PIN_INPUT_PULLUP | MUX_MODE0)	/* mmc1_dat0.mmc1_dat0 */
+			OMAP3_CORE1_IOPAD(0x214A, PIN_INPUT_PULLUP | MUX_MODE0)	/* mmc1_dat1.mmc1_dat1 */
+			OMAP3_CORE1_IOPAD(0x214C, PIN_INPUT_PULLUP | MUX_MODE0)	/* mmc1_dat2.mmc1_dat2 */
+			OMAP3_CORE1_IOPAD(0x214e, PIN_INPUT_PULLUP | MUX_MODE0)	/* mmc1_dat3.mmc1_dat3 */
+		>;
+	};
 };
 
 &usb_otg_hs {
-- 
1.7.9.5

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