[PATCH V2 05/14] ARM: dts: am437x: cm-t43: add NAND support

From: Nikita Kiryanov <nikita-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>
To: tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Nikita Kiryanov <nikita-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>,
	Benoit Cousson <bcousson-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
	Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
	Igor Grinberg <grinberg-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>,
	Dmitry Lifshitz
	<lifshitz-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>,
	Ian Campbell
	<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>
Subject: [PATCH V2 05/14] ARM: dts: am437x: cm-t43: add NAND support
Date: Tue,  1 Dec 2015 15:55:00 +0200	[thread overview]
Message-ID: <1448978109-5614-6-git-send-email-nikita@compulab.co.il> (raw)
In-Reply-To: <1448978109-5614-1-git-send-email-nikita-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>

One of the CompuLab cm-t43 configurations comes with on-board NAND flash as
primary storage. It is partitioned into kernel, dtb, and rootfs partitions.
Add it to the device tree.

Signed-off-by: Nikita Kiryanov <nikita-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>
Cc: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
Cc: Benoit Cousson <bcousson-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
Cc: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>
Cc: Igor Grinberg <grinberg-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>
Cc: Dmitry Lifshitz <lifshitz-UTxiZqZC01RS1MOuV/RT9w@public.gmane.org>
Cc: Ian Campbell <ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>
---
Changes in V2:
	- No changes.

 arch/arm/boot/dts/am437x-cm-t43.dts | 79 +++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/arch/arm/boot/dts/am437x-cm-t43.dts b/arch/arm/boot/dts/am437x-cm-t43.dts
index 27e5948..efabb31 100644
--- a/arch/arm/boot/dts/am437x-cm-t43.dts
+++ b/arch/arm/boot/dts/am437x-cm-t43.dts
@@ -53,6 +53,81 @@
 			AM4372_IOPAD(0x95C, PIN_OUTPUT | MUX_MODE0) /* spi0_cs0.spi0_cs0 */
 		>;
 	};
+
+	nand_flash_x8: nand_flash_x8 {
+		pinctrl-single,pins = <
+			AM4372_IOPAD(0x800, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x804, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x808, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x80c, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x810, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x814, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x818, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x81c, PIN_INPUT | PULL_DISABLE | MUX_MODE0)
+			AM4372_IOPAD(0x870, PIN_INPUT_PULLUP  | MUX_MODE0)
+			AM4372_IOPAD(0x874, PIN_OUTPUT_PULLUP | MUX_MODE0)
+			AM4372_IOPAD(0x87c, PIN_OUTPUT_PULLUP | MUX_MODE0)
+			AM4372_IOPAD(0x898, PIN_OUTPUT_PULLDOWN | MUX_MODE0)
+			AM4372_IOPAD(0x894, PIN_OUTPUT_PULLDOWN | MUX_MODE0)
+			AM4372_IOPAD(0x890, PIN_OUTPUT_PULLDOWN | MUX_MODE0)
+			AM4372_IOPAD(0x89c, PIN_OUTPUT_PULLDOWN | MUX_MODE0)
+		>;
+	};
+};
+
+&gpmc {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&nand_flash_x8>;
+	ranges = <0 0 0x08000000 0x1000000>;
+	nand@0,0 {
+		reg = <0 0 0>;
+		ti,nand-ecc-opt = "bch8";
+		ti,elm-id = <&elm>;
+
+		nand-bus-width = <8>;
+		gpmc,device-width = <1>;
+		gpmc,sync-clk-ps = <0>;
+		gpmc,cs-on-ns = <0>;
+		gpmc,cs-rd-off-ns = <44>;
+		gpmc,cs-wr-off-ns = <44>;
+		gpmc,adv-on-ns = <6>;
+		gpmc,adv-rd-off-ns = <34>;
+		gpmc,adv-wr-off-ns = <44>;
+		gpmc,we-on-ns = <0>;
+		gpmc,we-off-ns = <40>;
+		gpmc,oe-on-ns = <0>;
+		gpmc,oe-off-ns = <54>;
+		gpmc,access-ns = <64>;
+		gpmc,rd-cycle-ns = <82>;
+		gpmc,wr-cycle-ns = <82>;
+		gpmc,wait-on-read = "true";
+		gpmc,wait-on-write = "true";
+		gpmc,bus-turnaround-ns = <0>;
+		gpmc,cycle2cycle-delay-ns = <0>;
+		gpmc,clk-activation-ns = <0>;
+		gpmc,wait-monitoring-ns = <0>;
+		gpmc,wr-access-ns = <40>;
+		gpmc,wr-data-mux-bus-ns = <0>;
+
+		gpmc,wait-pin = <0>;
+
+		#address-cells = <1>;
+		#size-cells = <1>;
+		/* MTD partition table */
+		partition@0 {
+			label = "kernel";
+			reg = <0x0 0x00980000>;
+		};
+		partition@980000 {
+			label = "dtb";
+			reg = <0x00980000 0x00080000>;
+		};
+		partition@a00000 {
+			label = "rootfs";
+			reg = <0x00a00000 0x0>;
+		};
+	};
 };
 
 &i2c0 {
@@ -186,6 +261,10 @@
 	};
 };
 
+&elm {
+	status = "okay";
+};
+
 &uart0 {
 	status = "okay";
 };
-- 
1.9.1

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