linux-kernel - [PATCH 7/7] ARM: berlin: enable flash on the BG2Q DMP

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Message-Id: <1433266351-22587-8-git-send-email-antoine.tenart@free-electrons.com>
Date:	Tue,  2 Jun 2015 19:32:31 +0200
From:	Antoine Tenart <antoine.tenart@...e-electrons.com>
To:	sebastian.hesselbarth@...il.com,
	ezequiel.garcia@...e-electrons.com, dwmw2@...radead.org,
	computersforpeace@...il.com
Cc:	Antoine Tenart <antoine.tenart@...e-electrons.com>,
	boris.brezillon@...e-electrons.com, zmxu@...vell.com,
	jszhang@...vell.com, linux-arm-kernel@...ts.infradead.org,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 7/7] ARM: berlin: enable flash on the BG2Q DMP

The BG2Q DMP has a nand controller. Add the corresponding node, but do
not enable it by default because the nand is only available on some BG2Q
DMP.

Signed-off-by: Antoine Tenart <antoine.tenart@...e-electrons.com>
---
 arch/arm/boot/dts/berlin2q-marvell-dmp.dts | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/arch/arm/boot/dts/berlin2q-marvell-dmp.dts b/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
index a98ac1bd8f65..4157258a6fb0 100644
--- a/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
+++ b/arch/arm/boot/dts/berlin2q-marvell-dmp.dts
@@ -112,3 +112,28 @@
 &sata_phy {
 	status = "okay";
 };
+
+&chip {
+	nand_pmux: nand-pmux {
+		groups = "G0", "G1";
+		function = "nand";
+	};
+};
+
+&nand0 {
+	pinctrl-0 = <&nand_pmux>;
+	pinctrl-names = "default";
+
+	marvell,nand-enable-arbiter;
+	nand-ecc-strength = <48>;
+	nand-ecc-step-size = <1024>;
+
+	num-cs = <1>;
+
+	/*
+	 * Two kinds of BG2Q DMP are available: one with emmc and
+	 * one with a nand. The latter is not widespread. Because
+	 * of this, disable the nand by default.
+	 */
+	status = "disabled";
+};
-- 
2.4.2

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